[llvm] r277716 - [X86][SSE] Add initial costs for vector CTTZ/CTLZ

Simon Pilgrim via llvm-commits llvm-commits at lists.llvm.org
Thu Aug 4 03:51:41 PDT 2016


Author: rksimon
Date: Thu Aug  4 05:51:41 2016
New Revision: 277716

URL: http://llvm.org/viewvc/llvm-project?rev=277716&view=rev
Log:
[X86][SSE] Add initial costs for vector CTTZ/CTLZ

Modified:
    llvm/trunk/lib/Target/X86/X86TargetTransformInfo.cpp
    llvm/trunk/test/Analysis/CostModel/X86/ctbits-cost.ll
    llvm/trunk/test/Analysis/CostModel/X86/scalarize.ll
    llvm/trunk/test/Transforms/SLPVectorizer/X86/ctlz.ll
    llvm/trunk/test/Transforms/SLPVectorizer/X86/cttz.ll

Modified: llvm/trunk/lib/Target/X86/X86TargetTransformInfo.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/X86/X86TargetTransformInfo.cpp?rev=277716&r1=277715&r2=277716&view=diff
==============================================================================
--- llvm/trunk/lib/Target/X86/X86TargetTransformInfo.cpp (original)
+++ llvm/trunk/lib/Target/X86/X86TargetTransformInfo.cpp Thu Aug  4 05:51:41 2016
@@ -948,7 +948,9 @@ int X86TTIImpl::getIntrinsicInstrCost(In
   // Costs should match the codegen from:
   // BITREVERSE: llvm\test\CodeGen\X86\vector-bitreverse.ll
   // BSWAP: llvm\test\CodeGen\X86\bswap-vector.ll
+  // CTLZ: llvm\test\CodeGen\X86\vector-lzcnt-*.ll
   // CTPOP: llvm\test\CodeGen\X86\vector-popcnt-*.ll
+  // CTTZ: llvm\test\CodeGen\X86\vector-tzcnt-*.ll
   static const CostTblEntry XOPCostTbl[] = {
     { ISD::BITREVERSE, MVT::v4i64,   4 },
     { ISD::BITREVERSE, MVT::v8i32,   4 },
@@ -971,10 +973,18 @@ int X86TTIImpl::getIntrinsicInstrCost(In
     { ISD::BSWAP,      MVT::v4i64,   1 },
     { ISD::BSWAP,      MVT::v8i32,   1 },
     { ISD::BSWAP,      MVT::v16i16,  1 },
+    { ISD::CTLZ,       MVT::v4i64,  23 },
+    { ISD::CTLZ,       MVT::v8i32,  18 },
+    { ISD::CTLZ,       MVT::v16i16, 14 },
+    { ISD::CTLZ,       MVT::v32i8,   9 },
     { ISD::CTPOP,      MVT::v4i64,   7 },
     { ISD::CTPOP,      MVT::v8i32,  11 },
     { ISD::CTPOP,      MVT::v16i16,  9 },
-    { ISD::CTPOP,      MVT::v32i8,   6 }
+    { ISD::CTPOP,      MVT::v32i8,   6 },
+    { ISD::CTTZ,       MVT::v4i64,  10 },
+    { ISD::CTTZ,       MVT::v8i32,  14 },
+    { ISD::CTTZ,       MVT::v16i16, 12 },
+    { ISD::CTTZ,       MVT::v32i8,   9 }
   };
   static const CostTblEntry AVX1CostTbl[] = {
     { ISD::BITREVERSE, MVT::v4i64,  10 },
@@ -984,10 +994,18 @@ int X86TTIImpl::getIntrinsicInstrCost(In
     { ISD::BSWAP,      MVT::v4i64,   4 },
     { ISD::BSWAP,      MVT::v8i32,   4 },
     { ISD::BSWAP,      MVT::v16i16,  4 },
+    { ISD::CTLZ,       MVT::v4i64,  46 },
+    { ISD::CTLZ,       MVT::v8i32,  36 },
+    { ISD::CTLZ,       MVT::v16i16, 28 },
+    { ISD::CTLZ,       MVT::v32i8,  18 },
     { ISD::CTPOP,      MVT::v4i64,  14 },
     { ISD::CTPOP,      MVT::v8i32,  22 },
     { ISD::CTPOP,      MVT::v16i16, 18 },
-    { ISD::CTPOP,      MVT::v32i8,  12 }
+    { ISD::CTPOP,      MVT::v32i8,  12 },
+    { ISD::CTTZ,       MVT::v4i64,  20 },
+    { ISD::CTTZ,       MVT::v8i32,  28 },
+    { ISD::CTTZ,       MVT::v16i16, 24 },
+    { ISD::CTTZ,       MVT::v32i8,  18 },
   };
   static const CostTblEntry SSSE3CostTbl[] = {
     { ISD::BITREVERSE, MVT::v2i64,   5 },
@@ -997,19 +1015,32 @@ int X86TTIImpl::getIntrinsicInstrCost(In
     { ISD::BSWAP,      MVT::v2i64,   1 },
     { ISD::BSWAP,      MVT::v4i32,   1 },
     { ISD::BSWAP,      MVT::v8i16,   1 },
+    { ISD::CTLZ,       MVT::v2i64,  23 },
+    { ISD::CTLZ,       MVT::v4i32,  18 },
+    { ISD::CTLZ,       MVT::v8i16,  14 },
+    { ISD::CTLZ,       MVT::v16i8,   9 },
     { ISD::CTPOP,      MVT::v2i64,   7 },
     { ISD::CTPOP,      MVT::v4i32,  11 },
     { ISD::CTPOP,      MVT::v8i16,   9 },
-    { ISD::CTPOP,      MVT::v16i8,   6 }
+    { ISD::CTPOP,      MVT::v16i8,   6 },
+    { ISD::CTTZ,       MVT::v2i64,  10 },
+    { ISD::CTTZ,       MVT::v4i32,  14 },
+    { ISD::CTTZ,       MVT::v8i16,  12 },
+    { ISD::CTTZ,       MVT::v16i8,   9 }
   };
   static const CostTblEntry SSE2CostTbl[] = {
     { ISD::BSWAP,      MVT::v2i64,   7 },
     { ISD::BSWAP,      MVT::v4i32,   7 },
     { ISD::BSWAP,      MVT::v8i16,   7 },
+    /* ISD::CTLZ - currently scalarized pre-SSSE3 */
     { ISD::CTPOP,      MVT::v2i64,  12 },
     { ISD::CTPOP,      MVT::v4i32,  15 },
     { ISD::CTPOP,      MVT::v8i16,  13 },
-    { ISD::CTPOP,      MVT::v16i8,  10 }
+    { ISD::CTPOP,      MVT::v16i8,  10 },
+    { ISD::CTTZ,       MVT::v2i64,  14 },
+    { ISD::CTTZ,       MVT::v4i32,  18 },
+    { ISD::CTTZ,       MVT::v8i16,  16 },
+    { ISD::CTTZ,       MVT::v16i8,  13 }
   };
 
   unsigned ISD = ISD::DELETED_NODE;
@@ -1022,9 +1053,15 @@ int X86TTIImpl::getIntrinsicInstrCost(In
   case Intrinsic::bswap:
     ISD = ISD::BSWAP;
     break;
+  case Intrinsic::ctlz:
+    ISD = ISD::CTLZ;
+    break;
   case Intrinsic::ctpop:
     ISD = ISD::CTPOP;
     break;
+  case Intrinsic::cttz:
+    ISD = ISD::CTTZ;
+    break;
   }
 
   // Legalize the type.

Modified: llvm/trunk/test/Analysis/CostModel/X86/ctbits-cost.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/Analysis/CostModel/X86/ctbits-cost.ll?rev=277716&r1=277715&r2=277716&view=diff
==============================================================================
--- llvm/trunk/test/Analysis/CostModel/X86/ctbits-cost.ll (original)
+++ llvm/trunk/test/Analysis/CostModel/X86/ctbits-cost.ll Thu Aug  4 05:51:41 2016
@@ -221,144 +221,176 @@ declare <32 x i8> @llvm.ctlz.v32i8(<32 x
 
 define <2 x i64> @var_ctlz_v2i64(<2 x i64> %a) {
 ; CHECK: 'Cost Model Analysis' for function 'var_ctlz_v2i64':
-; SSE: Found an estimated cost of 6 for instruction:   %ctlz
-; AVX: Found an estimated cost of 6 for instruction:   %ctlz
-; XOP: Found an estimated cost of 6 for instruction:   %ctlz
+; SSE2: Found an estimated cost of 6 for instruction:   %ctlz
+; SSE42: Found an estimated cost of 23 for instruction:   %ctlz
+; AVX: Found an estimated cost of 23 for instruction:   %ctlz
+; XOP: Found an estimated cost of 23 for instruction:   %ctlz
   %ctlz = call <2 x i64> @llvm.ctlz.v2i64(<2 x i64> %a, i1 0)
   ret <2 x i64> %ctlz
 }
 
 define <2 x i64> @var_ctlz_v2i64u(<2 x i64> %a) {
 ; CHECK: 'Cost Model Analysis' for function 'var_ctlz_v2i64u':
-; SSE: Found an estimated cost of 6 for instruction:   %ctlz
-; AVX: Found an estimated cost of 6 for instruction:   %ctlz
-; XOP: Found an estimated cost of 6 for instruction:   %ctlz
+; SSE2: Found an estimated cost of 6 for instruction:   %ctlz
+; SSE42: Found an estimated cost of 23 for instruction:   %ctlz
+; AVX: Found an estimated cost of 23 for instruction:   %ctlz
+; XOP: Found an estimated cost of 23 for instruction:   %ctlz
   %ctlz = call <2 x i64> @llvm.ctlz.v2i64(<2 x i64> %a, i1 1)
   ret <2 x i64> %ctlz
 }
 
 define <4 x i64> @var_ctlz_v4i64(<4 x i64> %a) {
 ; CHECK: 'Cost Model Analysis' for function 'var_ctlz_v4i64':
-; SSE: Found an estimated cost of 12 for instruction:   %ctlz
-; AVX: Found an estimated cost of 12 for instruction:   %ctlz
-; XOP: Found an estimated cost of 12 for instruction:   %ctlz
+; SSE2: Found an estimated cost of 12 for instruction:   %ctlz
+; SSE42: Found an estimated cost of 46 for instruction:   %ctlz
+; AVX1: Found an estimated cost of 46 for instruction:   %ctlz
+; AVX2: Found an estimated cost of 23 for instruction:   %ctlz
+; XOPAVX1: Found an estimated cost of 46 for instruction:   %ctlz
+; XOPAVX2: Found an estimated cost of 23 for instruction:   %ctlz
   %ctlz = call <4 x i64> @llvm.ctlz.v4i64(<4 x i64> %a, i1 0)
   ret <4 x i64> %ctlz
 }
 
 define <4 x i64> @var_ctlz_v4i64u(<4 x i64> %a) {
 ; CHECK: 'Cost Model Analysis' for function 'var_ctlz_v4i64u':
-; SSE: Found an estimated cost of 12 for instruction:   %ctlz
-; AVX: Found an estimated cost of 12 for instruction:   %ctlz
-; XOP: Found an estimated cost of 12 for instruction:   %ctlz
+; SSE2: Found an estimated cost of 12 for instruction:   %ctlz
+; SSE42: Found an estimated cost of 46 for instruction:   %ctlz
+; AVX1: Found an estimated cost of 46 for instruction:   %ctlz
+; AVX2: Found an estimated cost of 23 for instruction:   %ctlz
+; XOPAVX1: Found an estimated cost of 46 for instruction:   %ctlz
+; XOPAVX2: Found an estimated cost of 23 for instruction:   %ctlz
   %ctlz = call <4 x i64> @llvm.ctlz.v4i64(<4 x i64> %a, i1 1)
   ret <4 x i64> %ctlz
 }
 
 define <4 x i32> @var_ctlz_v4i32(<4 x i32> %a) {
 ; CHECK: 'Cost Model Analysis' for function 'var_ctlz_v4i32':
-; SSE: Found an estimated cost of 12 for instruction:   %ctlz
-; AVX: Found an estimated cost of 12 for instruction:   %ctlz
-; XOP: Found an estimated cost of 12 for instruction:   %ctlz
+; SSE2: Found an estimated cost of 12 for instruction:   %ctlz
+; SSE42: Found an estimated cost of 18 for instruction:   %ctlz
+; AVX: Found an estimated cost of 18 for instruction:   %ctlz
+; XOP: Found an estimated cost of 18 for instruction:   %ctlz
   %ctlz = call <4 x i32> @llvm.ctlz.v4i32(<4 x i32> %a, i1 0)
   ret <4 x i32> %ctlz
 }
 
 define <4 x i32> @var_ctlz_v4i32u(<4 x i32> %a) {
 ; CHECK: 'Cost Model Analysis' for function 'var_ctlz_v4i32u':
-; SSE: Found an estimated cost of 12 for instruction:   %ctlz
-; AVX: Found an estimated cost of 12 for instruction:   %ctlz
-; XOP: Found an estimated cost of 12 for instruction:   %ctlz
+; SSE2: Found an estimated cost of 12 for instruction:   %ctlz
+; SSE42: Found an estimated cost of 18 for instruction:   %ctlz
+; AVX: Found an estimated cost of 18 for instruction:   %ctlz
+; XOP: Found an estimated cost of 18 for instruction:   %ctlz
   %ctlz = call <4 x i32> @llvm.ctlz.v4i32(<4 x i32> %a, i1 1)
   ret <4 x i32> %ctlz
 }
 
 define <8 x i32> @var_ctlz_v8i32(<8 x i32> %a) {
 ; CHECK: 'Cost Model Analysis' for function 'var_ctlz_v8i32':
-; SSE: Found an estimated cost of 24 for instruction:   %ctlz
-; AVX: Found an estimated cost of 24 for instruction:   %ctlz
-; XOP: Found an estimated cost of 24 for instruction:   %ctlz
+; SSE2: Found an estimated cost of 24 for instruction:   %ctlz
+; SSE42: Found an estimated cost of 36 for instruction:   %ctlz
+; AVX1: Found an estimated cost of 36 for instruction:   %ctlz
+; AVX2: Found an estimated cost of 18 for instruction:   %ctlz
+; XOPAVX1: Found an estimated cost of 36 for instruction:   %ctlz
+; XOPAVX2: Found an estimated cost of 18 for instruction:   %ctlz
   %ctlz = call <8 x i32> @llvm.ctlz.v8i32(<8 x i32> %a, i1 0)
   ret <8 x i32> %ctlz
 }
 
 define <8 x i32> @var_ctlz_v8i32u(<8 x i32> %a) {
 ; CHECK: 'Cost Model Analysis' for function 'var_ctlz_v8i32u':
-; SSE: Found an estimated cost of 24 for instruction:   %ctlz
-; AVX: Found an estimated cost of 24 for instruction:   %ctlz
-; XOP: Found an estimated cost of 24 for instruction:   %ctlz
+; SSE2: Found an estimated cost of 24 for instruction:   %ctlz
+; SSE42: Found an estimated cost of 36 for instruction:   %ctlz
+; AVX1: Found an estimated cost of 36 for instruction:   %ctlz
+; AVX2: Found an estimated cost of 18 for instruction:   %ctlz
+; XOPAVX1: Found an estimated cost of 36 for instruction:   %ctlz
+; XOPAVX2: Found an estimated cost of 18 for instruction:   %ctlz
   %ctlz = call <8 x i32> @llvm.ctlz.v8i32(<8 x i32> %a, i1 1)
   ret <8 x i32> %ctlz
 }
 
 define <8 x i16> @var_ctlz_v8i16(<8 x i16> %a) {
 ; CHECK: 'Cost Model Analysis' for function 'var_ctlz_v8i16':
-; SSE: Found an estimated cost of 24 for instruction:   %ctlz
-; AVX: Found an estimated cost of 24 for instruction:   %ctlz
-; XOP: Found an estimated cost of 24 for instruction:   %ctlz
+; SSE2: Found an estimated cost of 24 for instruction:   %ctlz
+; SSE42: Found an estimated cost of 14 for instruction:   %ctlz
+; AVX: Found an estimated cost of 14 for instruction:   %ctlz
+; XOP: Found an estimated cost of 14 for instruction:   %ctlz
   %ctlz = call <8 x i16> @llvm.ctlz.v8i16(<8 x i16> %a, i1 0)
   ret <8 x i16> %ctlz
 }
 
 define <8 x i16> @var_ctlz_v8i16u(<8 x i16> %a) {
 ; CHECK: 'Cost Model Analysis' for function 'var_ctlz_v8i16u':
-; SSE: Found an estimated cost of 24 for instruction:   %ctlz
-; AVX: Found an estimated cost of 24 for instruction:   %ctlz
-; XOP: Found an estimated cost of 24 for instruction:   %ctlz
+; SSE2: Found an estimated cost of 24 for instruction:   %ctlz
+; SSE42: Found an estimated cost of 14 for instruction:   %ctlz
+; AVX: Found an estimated cost of 14 for instruction:   %ctlz
+; XOP: Found an estimated cost of 14 for instruction:   %ctlz
   %ctlz = call <8 x i16> @llvm.ctlz.v8i16(<8 x i16> %a, i1 1)
   ret <8 x i16> %ctlz
 }
 
 define <16 x i16> @var_ctlz_v16i16(<16 x i16> %a) {
 ; CHECK: 'Cost Model Analysis' for function 'var_ctlz_v16i16':
-; SSE: Found an estimated cost of 48 for instruction:   %ctlz
-; AVX: Found an estimated cost of 48 for instruction:   %ctlz
-; XOP: Found an estimated cost of 48 for instruction:   %ctlz
+; SSE2: Found an estimated cost of 48 for instruction:   %ctlz
+; SSE42: Found an estimated cost of 28 for instruction:   %ctlz
+; AVX1: Found an estimated cost of 28 for instruction:   %ctlz
+; AVX2: Found an estimated cost of 14 for instruction:   %ctlz
+; XOPAVX1: Found an estimated cost of 28 for instruction:   %ctlz
+; XOPAVX2: Found an estimated cost of 14 for instruction:   %ctlz
   %ctlz = call <16 x i16> @llvm.ctlz.v16i16(<16 x i16> %a, i1 0)
   ret <16 x i16> %ctlz
 }
 
 define <16 x i16> @var_ctlz_v16i16u(<16 x i16> %a) {
 ; CHECK: 'Cost Model Analysis' for function 'var_ctlz_v16i16u':
-; SSE: Found an estimated cost of 48 for instruction:   %ctlz
-; AVX: Found an estimated cost of 48 for instruction:   %ctlz
-; XOP: Found an estimated cost of 48 for instruction:   %ctlz
+; SSE2: Found an estimated cost of 48 for instruction:   %ctlz
+; SSE42: Found an estimated cost of 28 for instruction:   %ctlz
+; AVX1: Found an estimated cost of 28 for instruction:   %ctlz
+; AVX2: Found an estimated cost of 14 for instruction:   %ctlz
+; XOPAVX1: Found an estimated cost of 28 for instruction:   %ctlz
+; XOPAVX2: Found an estimated cost of 14 for instruction:   %ctlz
   %ctlz = call <16 x i16> @llvm.ctlz.v16i16(<16 x i16> %a, i1 1)
   ret <16 x i16> %ctlz
 }
 
 define <16 x i8> @var_ctlz_v16i8(<16 x i8> %a) {
 ; CHECK: 'Cost Model Analysis' for function 'var_ctlz_v16i8':
-; SSE: Found an estimated cost of 48 for instruction:   %ctlz
-; AVX: Found an estimated cost of 48 for instruction:   %ctlz
-; XOP: Found an estimated cost of 48 for instruction:   %ctlz
+; SSE2: Found an estimated cost of 48 for instruction:   %ctlz
+; SSE42: Found an estimated cost of 9 for instruction:   %ctlz
+; AVX: Found an estimated cost of 9 for instruction:   %ctlz
+; XOP: Found an estimated cost of 9 for instruction:   %ctlz
   %ctlz = call <16 x i8> @llvm.ctlz.v16i8(<16 x i8> %a, i1 0)
   ret <16 x i8> %ctlz
 }
 
 define <16 x i8> @var_ctlz_v16i8u(<16 x i8> %a) {
 ; CHECK: 'Cost Model Analysis' for function 'var_ctlz_v16i8u':
-; SSE: Found an estimated cost of 48 for instruction:   %ctlz
-; AVX: Found an estimated cost of 48 for instruction:   %ctlz
-; XOP: Found an estimated cost of 48 for instruction:   %ctlz
+; SSE2: Found an estimated cost of 48 for instruction:   %ctlz
+; SSE42: Found an estimated cost of 9 for instruction:   %ctlz
+; AVX: Found an estimated cost of 9 for instruction:   %ctlz
+; XOP: Found an estimated cost of 9 for instruction:   %ctlz
   %ctlz = call <16 x i8> @llvm.ctlz.v16i8(<16 x i8> %a, i1 1)
   ret <16 x i8> %ctlz
 }
 
 define <32 x i8> @var_ctlz_v32i8(<32 x i8> %a) {
 ; CHECK: 'Cost Model Analysis' for function 'var_ctlz_v32i8':
-; SSE: Found an estimated cost of 96 for instruction:   %ctlz
-; AVX: Found an estimated cost of 96 for instruction:   %ctlz
-; XOP: Found an estimated cost of 96 for instruction:   %ctlz
+; SSE2: Found an estimated cost of 96 for instruction:   %ctlz
+; SSE42: Found an estimated cost of 18 for instruction:   %ctlz
+; AVX1: Found an estimated cost of 18 for instruction:   %ctlz
+; AVX2: Found an estimated cost of 9 for instruction:   %ctlz
+; XOPAVX1: Found an estimated cost of 18 for instruction:   %ctlz
+; XOPAVX2: Found an estimated cost of 9 for instruction:   %ctlz
   %ctlz = call <32 x i8> @llvm.ctlz.v32i8(<32 x i8> %a, i1 0)
   ret <32 x i8> %ctlz
 }
 
 define <32 x i8> @var_ctlz_v32i8u(<32 x i8> %a) {
 ; CHECK: 'Cost Model Analysis' for function 'var_ctlz_v32i8u':
-; SSE: Found an estimated cost of 96 for instruction:   %ctlz
-; AVX: Found an estimated cost of 96 for instruction:   %ctlz
-; XOP: Found an estimated cost of 96 for instruction:   %ctlz
+; SSE2: Found an estimated cost of 96 for instruction:   %ctlz
+; SSE42: Found an estimated cost of 18 for instruction:   %ctlz
+; AVX1: Found an estimated cost of 18 for instruction:   %ctlz
+; AVX2: Found an estimated cost of 9 for instruction:   %ctlz
+; XOPAVX1: Found an estimated cost of 18 for instruction:   %ctlz
+; XOPAVX2: Found an estimated cost of 9 for instruction:   %ctlz
   %ctlz = call <32 x i8> @llvm.ctlz.v32i8(<32 x i8> %a, i1 1)
   ret <32 x i8> %ctlz
 }
@@ -440,144 +472,176 @@ declare <32 x i8> @llvm.cttz.v32i8(<32 x
 
 define <2 x i64> @var_cttz_v2i64(<2 x i64> %a) {
 ; CHECK: 'Cost Model Analysis' for function 'var_cttz_v2i64':
-; SSE: Found an estimated cost of 6 for instruction:   %cttz
-; AVX: Found an estimated cost of 6 for instruction:   %cttz
-; XOP: Found an estimated cost of 6 for instruction:   %cttz
+; SSE2: Found an estimated cost of 14 for instruction:   %cttz
+; SSE42: Found an estimated cost of 10 for instruction:   %cttz
+; AVX: Found an estimated cost of 10 for instruction:   %cttz
+; XOP: Found an estimated cost of 10 for instruction:   %cttz
   %cttz = call <2 x i64> @llvm.cttz.v2i64(<2 x i64> %a, i1 0)
   ret <2 x i64> %cttz
 }
 
 define <2 x i64> @var_cttz_v2i64u(<2 x i64> %a) {
 ; CHECK: 'Cost Model Analysis' for function 'var_cttz_v2i64u':
-; SSE: Found an estimated cost of 6 for instruction:   %cttz
-; AVX: Found an estimated cost of 6 for instruction:   %cttz
-; XOP: Found an estimated cost of 6 for instruction:   %cttz
+; SSE2: Found an estimated cost of 14 for instruction:   %cttz
+; SSE42: Found an estimated cost of 10 for instruction:   %cttz
+; AVX: Found an estimated cost of 10 for instruction:   %cttz
+; XOP: Found an estimated cost of 10 for instruction:   %cttz
   %cttz = call <2 x i64> @llvm.cttz.v2i64(<2 x i64> %a, i1 1)
   ret <2 x i64> %cttz
 }
 
 define <4 x i64> @var_cttz_v4i64(<4 x i64> %a) {
 ; CHECK: 'Cost Model Analysis' for function 'var_cttz_v4i64':
-; SSE: Found an estimated cost of 12 for instruction:   %cttz
-; AVX: Found an estimated cost of 12 for instruction:   %cttz
-; XOP: Found an estimated cost of 12 for instruction:   %cttz
+; SSE2: Found an estimated cost of 28 for instruction:   %cttz
+; SSE42: Found an estimated cost of 20 for instruction:   %cttz
+; AVX1: Found an estimated cost of 20 for instruction:   %cttz
+; AVX2: Found an estimated cost of 10 for instruction:   %cttz
+; XOPAVX1: Found an estimated cost of 20 for instruction:   %cttz
+; XOPAVX2: Found an estimated cost of 10 for instruction:   %cttz
   %cttz = call <4 x i64> @llvm.cttz.v4i64(<4 x i64> %a, i1 0)
   ret <4 x i64> %cttz
 }
 
 define <4 x i64> @var_cttz_v4i64u(<4 x i64> %a) {
 ; CHECK: 'Cost Model Analysis' for function 'var_cttz_v4i64u':
-; SSE: Found an estimated cost of 12 for instruction:   %cttz
-; AVX: Found an estimated cost of 12 for instruction:   %cttz
-; XOP: Found an estimated cost of 12 for instruction:   %cttz
+; SSE2: Found an estimated cost of 28 for instruction:   %cttz
+; SSE42: Found an estimated cost of 20 for instruction:   %cttz
+; AVX1: Found an estimated cost of 20 for instruction:   %cttz
+; AVX2: Found an estimated cost of 10 for instruction:   %cttz
+; XOPAVX1: Found an estimated cost of 20 for instruction:   %cttz
+; XOPAVX2: Found an estimated cost of 10 for instruction:   %cttz
   %cttz = call <4 x i64> @llvm.cttz.v4i64(<4 x i64> %a, i1 1)
   ret <4 x i64> %cttz
 }
 
 define <4 x i32> @var_cttz_v4i32(<4 x i32> %a) {
 ; CHECK: 'Cost Model Analysis' for function 'var_cttz_v4i32':
-; SSE: Found an estimated cost of 12 for instruction:   %cttz
-; AVX: Found an estimated cost of 12 for instruction:   %cttz
-; XOP: Found an estimated cost of 12 for instruction:   %cttz
+; SSE2: Found an estimated cost of 18 for instruction:   %cttz
+; SSE42: Found an estimated cost of 14 for instruction:   %cttz
+; AVX: Found an estimated cost of 14 for instruction:   %cttz
+; XOP: Found an estimated cost of 14 for instruction:   %cttz
   %cttz = call <4 x i32> @llvm.cttz.v4i32(<4 x i32> %a, i1 0)
   ret <4 x i32> %cttz
 }
 
 define <4 x i32> @var_cttz_v4i32u(<4 x i32> %a) {
 ; CHECK: 'Cost Model Analysis' for function 'var_cttz_v4i32u':
-; SSE: Found an estimated cost of 12 for instruction:   %cttz
-; AVX: Found an estimated cost of 12 for instruction:   %cttz
-; XOP: Found an estimated cost of 12 for instruction:   %cttz
+; SSE2: Found an estimated cost of 18 for instruction:   %cttz
+; SSE42: Found an estimated cost of 14 for instruction:   %cttz
+; AVX: Found an estimated cost of 14 for instruction:   %cttz
+; XOP: Found an estimated cost of 14 for instruction:   %cttz
   %cttz = call <4 x i32> @llvm.cttz.v4i32(<4 x i32> %a, i1 1)
   ret <4 x i32> %cttz
 }
 
 define <8 x i32> @var_cttz_v8i32(<8 x i32> %a) {
 ; CHECK: 'Cost Model Analysis' for function 'var_cttz_v8i32':
-; SSE: Found an estimated cost of 24 for instruction:   %cttz
-; AVX: Found an estimated cost of 24 for instruction:   %cttz
-; XOP: Found an estimated cost of 24 for instruction:   %cttz
+; SSE2: Found an estimated cost of 36 for instruction:   %cttz
+; SSE42: Found an estimated cost of 28 for instruction:   %cttz
+; AVX1: Found an estimated cost of 28 for instruction:   %cttz
+; AVX2: Found an estimated cost of 14 for instruction:   %cttz
+; XOPAVX1: Found an estimated cost of 28 for instruction:   %cttz
+; XOPAVX2: Found an estimated cost of 14 for instruction:   %cttz
   %cttz = call <8 x i32> @llvm.cttz.v8i32(<8 x i32> %a, i1 0)
   ret <8 x i32> %cttz
 }
 
 define <8 x i32> @var_cttz_v8i32u(<8 x i32> %a) {
 ; CHECK: 'Cost Model Analysis' for function 'var_cttz_v8i32u':
-; SSE: Found an estimated cost of 24 for instruction:   %cttz
-; AVX: Found an estimated cost of 24 for instruction:   %cttz
-; XOP: Found an estimated cost of 24 for instruction:   %cttz
+; SSE2: Found an estimated cost of 36 for instruction:   %cttz
+; SSE42: Found an estimated cost of 28 for instruction:   %cttz
+; AVX1: Found an estimated cost of 28 for instruction:   %cttz
+; AVX2: Found an estimated cost of 14 for instruction:   %cttz
+; XOPAVX1: Found an estimated cost of 28 for instruction:   %cttz
+; XOPAVX2: Found an estimated cost of 14 for instruction:   %cttz
   %cttz = call <8 x i32> @llvm.cttz.v8i32(<8 x i32> %a, i1 1)
   ret <8 x i32> %cttz
 }
 
 define <8 x i16> @var_cttz_v8i16(<8 x i16> %a) {
 ; CHECK: 'Cost Model Analysis' for function 'var_cttz_v8i16':
-; SSE: Found an estimated cost of 24 for instruction:   %cttz
-; AVX: Found an estimated cost of 24 for instruction:   %cttz
-; XOP: Found an estimated cost of 24 for instruction:   %cttz
+; SSE2: Found an estimated cost of 16 for instruction:   %cttz
+; SSE42: Found an estimated cost of 12 for instruction:   %cttz
+; AVX: Found an estimated cost of 12 for instruction:   %cttz
+; XOP: Found an estimated cost of 12 for instruction:   %cttz
   %cttz = call <8 x i16> @llvm.cttz.v8i16(<8 x i16> %a, i1 0)
   ret <8 x i16> %cttz
 }
 
 define <8 x i16> @var_cttz_v8i16u(<8 x i16> %a) {
 ; CHECK: 'Cost Model Analysis' for function 'var_cttz_v8i16u':
-; SSE: Found an estimated cost of 24 for instruction:   %cttz
-; AVX: Found an estimated cost of 24 for instruction:   %cttz
-; XOP: Found an estimated cost of 24 for instruction:   %cttz
+; SSE2: Found an estimated cost of 16 for instruction:   %cttz
+; SSE42: Found an estimated cost of 12 for instruction:   %cttz
+; AVX: Found an estimated cost of 12 for instruction:   %cttz
+; XOP: Found an estimated cost of 12 for instruction:   %cttz
   %cttz = call <8 x i16> @llvm.cttz.v8i16(<8 x i16> %a, i1 1)
   ret <8 x i16> %cttz
 }
 
 define <16 x i16> @var_cttz_v16i16(<16 x i16> %a) {
 ; CHECK: 'Cost Model Analysis' for function 'var_cttz_v16i16':
-; SSE: Found an estimated cost of 48 for instruction:   %cttz
-; AVX: Found an estimated cost of 48 for instruction:   %cttz
-; XOP: Found an estimated cost of 48 for instruction:   %cttz
+; SSE2: Found an estimated cost of 32 for instruction:   %cttz
+; SSE42: Found an estimated cost of 24 for instruction:   %cttz
+; AVX1: Found an estimated cost of 24 for instruction:   %cttz
+; AVX2: Found an estimated cost of 12 for instruction:   %cttz
+; XOPAVX1: Found an estimated cost of 24 for instruction:   %cttz
+; XOPAVX2: Found an estimated cost of 12 for instruction:   %cttz
   %cttz = call <16 x i16> @llvm.cttz.v16i16(<16 x i16> %a, i1 0)
   ret <16 x i16> %cttz
 }
 
 define <16 x i16> @var_cttz_v16i16u(<16 x i16> %a) {
 ; CHECK: 'Cost Model Analysis' for function 'var_cttz_v16i16u':
-; SSE: Found an estimated cost of 48 for instruction:   %cttz
-; AVX: Found an estimated cost of 48 for instruction:   %cttz
-; XOP: Found an estimated cost of 48 for instruction:   %cttz
+; SSE2: Found an estimated cost of 32 for instruction:   %cttz
+; SSE42: Found an estimated cost of 24 for instruction:   %cttz
+; AVX1: Found an estimated cost of 24 for instruction:   %cttz
+; AVX2: Found an estimated cost of 12 for instruction:   %cttz
+; XOPAVX1: Found an estimated cost of 24 for instruction:   %cttz
+; XOPAVX2: Found an estimated cost of 12 for instruction:   %cttz
   %cttz = call <16 x i16> @llvm.cttz.v16i16(<16 x i16> %a, i1 1)
   ret <16 x i16> %cttz
 }
 
 define <16 x i8> @var_cttz_v16i8(<16 x i8> %a) {
 ; CHECK: 'Cost Model Analysis' for function 'var_cttz_v16i8':
-; SSE: Found an estimated cost of 48 for instruction:   %cttz
-; AVX: Found an estimated cost of 48 for instruction:   %cttz
-; XOP: Found an estimated cost of 48 for instruction:   %cttz
+; SSE2: Found an estimated cost of 13 for instruction:   %cttz
+; SSE42: Found an estimated cost of 9 for instruction:   %cttz
+; AVX: Found an estimated cost of 9 for instruction:   %cttz
+; XOP: Found an estimated cost of 9 for instruction:   %cttz
   %cttz = call <16 x i8> @llvm.cttz.v16i8(<16 x i8> %a, i1 0)
   ret <16 x i8> %cttz
 }
 
 define <16 x i8> @var_cttz_v16i8u(<16 x i8> %a) {
 ; CHECK: 'Cost Model Analysis' for function 'var_cttz_v16i8u':
-; SSE: Found an estimated cost of 48 for instruction:   %cttz
-; AVX: Found an estimated cost of 48 for instruction:   %cttz
-; XOP: Found an estimated cost of 48 for instruction:   %cttz
+; SSE2: Found an estimated cost of 13 for instruction:   %cttz
+; SSE42: Found an estimated cost of 9 for instruction:   %cttz
+; AVX: Found an estimated cost of 9 for instruction:   %cttz
+; XOP: Found an estimated cost of 9 for instruction:   %cttz
   %cttz = call <16 x i8> @llvm.cttz.v16i8(<16 x i8> %a, i1 1)
   ret <16 x i8> %cttz
 }
 
 define <32 x i8> @var_cttz_v32i8(<32 x i8> %a) {
 ; CHECK: 'Cost Model Analysis' for function 'var_cttz_v32i8':
-; SSE: Found an estimated cost of 96 for instruction:   %cttz
-; AVX: Found an estimated cost of 96 for instruction:   %cttz
-; XOP: Found an estimated cost of 96 for instruction:   %cttz
+; SSE2: Found an estimated cost of 26 for instruction:   %cttz
+; SSE42: Found an estimated cost of 18 for instruction:   %cttz
+; AVX1: Found an estimated cost of 18 for instruction:   %cttz
+; AVX2: Found an estimated cost of 9 for instruction:   %cttz
+; XOPAVX1: Found an estimated cost of 18 for instruction:   %cttz
+; XOPAVX2: Found an estimated cost of 9 for instruction:   %cttz
   %cttz = call <32 x i8> @llvm.cttz.v32i8(<32 x i8> %a, i1 0)
   ret <32 x i8> %cttz
 }
 
 define <32 x i8> @var_cttz_v32i8u(<32 x i8> %a) {
 ; CHECK: 'Cost Model Analysis' for function 'var_cttz_v32i8u':
-; SSE: Found an estimated cost of 96 for instruction:   %cttz
-; AVX: Found an estimated cost of 96 for instruction:   %cttz
-; XOP: Found an estimated cost of 96 for instruction:   %cttz
+; SSE2: Found an estimated cost of 26 for instruction:   %cttz
+; SSE42: Found an estimated cost of 18 for instruction:   %cttz
+; AVX1: Found an estimated cost of 18 for instruction:   %cttz
+; AVX2: Found an estimated cost of 9 for instruction:   %cttz
+; XOPAVX1: Found an estimated cost of 18 for instruction:   %cttz
+; XOPAVX2: Found an estimated cost of 9 for instruction:   %cttz
   %cttz = call <32 x i8> @llvm.cttz.v32i8(<32 x i8> %a, i1 1)
   ret <32 x i8> %cttz
 }

Modified: llvm/trunk/test/Analysis/CostModel/X86/scalarize.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/Analysis/CostModel/X86/scalarize.ll?rev=277716&r1=277715&r2=277716&view=diff
==============================================================================
--- llvm/trunk/test/Analysis/CostModel/X86/scalarize.ll (original)
+++ llvm/trunk/test/Analysis/CostModel/X86/scalarize.ll Thu Aug  4 05:51:41 2016
@@ -28,11 +28,11 @@ define void @test_scalarized_intrinsics(
 ; CHECK64: cost of 1 {{.*}}bswap.v2i64
         %r3 = call %i8 @llvm.bswap.v2i64(%i8 undef)
 
-; CHECK32: cost of 12 {{.*}}cttz.v4i32
-; CHECK64: cost of 12 {{.*}}cttz.v4i32
+; CHECK32: cost of 14 {{.*}}cttz.v4i32
+; CHECK64: cost of 14 {{.*}}cttz.v4i32
         %r4 = call %i4 @llvm.cttz.v4i32(%i4 undef)
 ; CHECK32: cost of 10 {{.*}}cttz.v2i64
-; CHECK64: cost of 6 {{.*}}cttz.v2i64
+; CHECK64: cost of 10 {{.*}}cttz.v2i64
         %r5 = call %i8 @llvm.cttz.v2i64(%i8 undef)
 
 ; CHECK32: ret

Modified: llvm/trunk/test/Transforms/SLPVectorizer/X86/ctlz.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/Transforms/SLPVectorizer/X86/ctlz.ll?rev=277716&r1=277715&r2=277716&view=diff
==============================================================================
--- llvm/trunk/test/Transforms/SLPVectorizer/X86/ctlz.ll (original)
+++ llvm/trunk/test/Transforms/SLPVectorizer/X86/ctlz.ll Thu Aug  4 05:51:41 2016
@@ -1,7 +1,8 @@
 ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
-; RUN: opt < %s -mtriple=x86_64-unknown -basicaa -slp-vectorizer -S | FileCheck %s --check-prefix=CHECK --check-prefix=SSE
-; RUN: opt < %s -mtriple=x86_64-unknown -mcpu=corei7-avx -basicaa -slp-vectorizer -S | FileCheck %s --check-prefix=CHECK --check-prefix=AVX
-; RUN: opt < %s -mtriple=x86_64-unknown -mcpu=core-avx2 -basicaa -slp-vectorizer -S | FileCheck %s --check-prefix=CHECK --check-prefix=AVX
+; RUN: opt < %s -mtriple=x86_64-unknown -basicaa -slp-vectorizer -S | FileCheck %s --check-prefix=CHECK --check-prefix=SSE --check-prefix=SSE2
+; RUN: opt < %s -mtriple=x86_64-unknown -mcpu=corei7 -basicaa -slp-vectorizer -S | FileCheck %s --check-prefix=CHECK --check-prefix=SSE --check-prefix=SSE42
+; RUN: opt < %s -mtriple=x86_64-unknown -mcpu=corei7-avx -basicaa -slp-vectorizer -S | FileCheck %s --check-prefix=CHECK --check-prefix=AVX --check-prefix=AVX1
+; RUN: opt < %s -mtriple=x86_64-unknown -mcpu=core-avx2 -basicaa -slp-vectorizer -S | FileCheck %s --check-prefix=CHECK --check-prefix=AVX --check-prefix=AVX2
 
 target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
 
@@ -105,32 +106,65 @@ define void @ctlz_4i32() #0 {
 }
 
 define void @ctlz_8i32() #0 {
-; CHECK-LABEL: @ctlz_8i32(
-; CHECK-NEXT:    [[LD0:%.*]] = load i32, i32* getelementptr inbounds ([8 x i32], [8 x i32]* @src32, i32 0, i64 0), align 2
-; CHECK-NEXT:    [[LD1:%.*]] = load i32, i32* getelementptr inbounds ([8 x i32], [8 x i32]* @src32, i32 0, i64 1), align 2
-; CHECK-NEXT:    [[LD2:%.*]] = load i32, i32* getelementptr inbounds ([8 x i32], [8 x i32]* @src32, i32 0, i64 2), align 2
-; CHECK-NEXT:    [[LD3:%.*]] = load i32, i32* getelementptr inbounds ([8 x i32], [8 x i32]* @src32, i32 0, i64 3), align 2
-; CHECK-NEXT:    [[LD4:%.*]] = load i32, i32* getelementptr inbounds ([8 x i32], [8 x i32]* @src32, i32 0, i64 4), align 2
-; CHECK-NEXT:    [[LD5:%.*]] = load i32, i32* getelementptr inbounds ([8 x i32], [8 x i32]* @src32, i32 0, i64 5), align 2
-; CHECK-NEXT:    [[LD6:%.*]] = load i32, i32* getelementptr inbounds ([8 x i32], [8 x i32]* @src32, i32 0, i64 6), align 2
-; CHECK-NEXT:    [[LD7:%.*]] = load i32, i32* getelementptr inbounds ([8 x i32], [8 x i32]* @src32, i32 0, i64 7), align 2
-; CHECK-NEXT:    [[CTLZ0:%.*]] = call i32 @llvm.ctlz.i32(i32 [[LD0]], i1 false)
-; CHECK-NEXT:    [[CTLZ1:%.*]] = call i32 @llvm.ctlz.i32(i32 [[LD1]], i1 false)
-; CHECK-NEXT:    [[CTLZ2:%.*]] = call i32 @llvm.ctlz.i32(i32 [[LD2]], i1 false)
-; CHECK-NEXT:    [[CTLZ3:%.*]] = call i32 @llvm.ctlz.i32(i32 [[LD3]], i1 false)
-; CHECK-NEXT:    [[CTLZ4:%.*]] = call i32 @llvm.ctlz.i32(i32 [[LD4]], i1 false)
-; CHECK-NEXT:    [[CTLZ5:%.*]] = call i32 @llvm.ctlz.i32(i32 [[LD5]], i1 false)
-; CHECK-NEXT:    [[CTLZ6:%.*]] = call i32 @llvm.ctlz.i32(i32 [[LD6]], i1 false)
-; CHECK-NEXT:    [[CTLZ7:%.*]] = call i32 @llvm.ctlz.i32(i32 [[LD7]], i1 false)
-; CHECK-NEXT:    store i32 [[CTLZ0]], i32* getelementptr inbounds ([8 x i32], [8 x i32]* @dst32, i32 0, i64 0), align 2
-; CHECK-NEXT:    store i32 [[CTLZ1]], i32* getelementptr inbounds ([8 x i32], [8 x i32]* @dst32, i32 0, i64 1), align 2
-; CHECK-NEXT:    store i32 [[CTLZ2]], i32* getelementptr inbounds ([8 x i32], [8 x i32]* @dst32, i32 0, i64 2), align 2
-; CHECK-NEXT:    store i32 [[CTLZ3]], i32* getelementptr inbounds ([8 x i32], [8 x i32]* @dst32, i32 0, i64 3), align 2
-; CHECK-NEXT:    store i32 [[CTLZ4]], i32* getelementptr inbounds ([8 x i32], [8 x i32]* @dst32, i32 0, i64 4), align 2
-; CHECK-NEXT:    store i32 [[CTLZ5]], i32* getelementptr inbounds ([8 x i32], [8 x i32]* @dst32, i32 0, i64 5), align 2
-; CHECK-NEXT:    store i32 [[CTLZ6]], i32* getelementptr inbounds ([8 x i32], [8 x i32]* @dst32, i32 0, i64 6), align 2
-; CHECK-NEXT:    store i32 [[CTLZ7]], i32* getelementptr inbounds ([8 x i32], [8 x i32]* @dst32, i32 0, i64 7), align 2
-; CHECK-NEXT:    ret void
+; SSE-LABEL: @ctlz_8i32(
+; SSE-NEXT:    [[LD0:%.*]] = load i32, i32* getelementptr inbounds ([8 x i32], [8 x i32]* @src32, i32 0, i64 0), align 2
+; SSE-NEXT:    [[LD1:%.*]] = load i32, i32* getelementptr inbounds ([8 x i32], [8 x i32]* @src32, i32 0, i64 1), align 2
+; SSE-NEXT:    [[LD2:%.*]] = load i32, i32* getelementptr inbounds ([8 x i32], [8 x i32]* @src32, i32 0, i64 2), align 2
+; SSE-NEXT:    [[LD3:%.*]] = load i32, i32* getelementptr inbounds ([8 x i32], [8 x i32]* @src32, i32 0, i64 3), align 2
+; SSE-NEXT:    [[LD4:%.*]] = load i32, i32* getelementptr inbounds ([8 x i32], [8 x i32]* @src32, i32 0, i64 4), align 2
+; SSE-NEXT:    [[LD5:%.*]] = load i32, i32* getelementptr inbounds ([8 x i32], [8 x i32]* @src32, i32 0, i64 5), align 2
+; SSE-NEXT:    [[LD6:%.*]] = load i32, i32* getelementptr inbounds ([8 x i32], [8 x i32]* @src32, i32 0, i64 6), align 2
+; SSE-NEXT:    [[LD7:%.*]] = load i32, i32* getelementptr inbounds ([8 x i32], [8 x i32]* @src32, i32 0, i64 7), align 2
+; SSE-NEXT:    [[CTLZ0:%.*]] = call i32 @llvm.ctlz.i32(i32 [[LD0]], i1 false)
+; SSE-NEXT:    [[CTLZ1:%.*]] = call i32 @llvm.ctlz.i32(i32 [[LD1]], i1 false)
+; SSE-NEXT:    [[CTLZ2:%.*]] = call i32 @llvm.ctlz.i32(i32 [[LD2]], i1 false)
+; SSE-NEXT:    [[CTLZ3:%.*]] = call i32 @llvm.ctlz.i32(i32 [[LD3]], i1 false)
+; SSE-NEXT:    [[CTLZ4:%.*]] = call i32 @llvm.ctlz.i32(i32 [[LD4]], i1 false)
+; SSE-NEXT:    [[CTLZ5:%.*]] = call i32 @llvm.ctlz.i32(i32 [[LD5]], i1 false)
+; SSE-NEXT:    [[CTLZ6:%.*]] = call i32 @llvm.ctlz.i32(i32 [[LD6]], i1 false)
+; SSE-NEXT:    [[CTLZ7:%.*]] = call i32 @llvm.ctlz.i32(i32 [[LD7]], i1 false)
+; SSE-NEXT:    store i32 [[CTLZ0]], i32* getelementptr inbounds ([8 x i32], [8 x i32]* @dst32, i32 0, i64 0), align 2
+; SSE-NEXT:    store i32 [[CTLZ1]], i32* getelementptr inbounds ([8 x i32], [8 x i32]* @dst32, i32 0, i64 1), align 2
+; SSE-NEXT:    store i32 [[CTLZ2]], i32* getelementptr inbounds ([8 x i32], [8 x i32]* @dst32, i32 0, i64 2), align 2
+; SSE-NEXT:    store i32 [[CTLZ3]], i32* getelementptr inbounds ([8 x i32], [8 x i32]* @dst32, i32 0, i64 3), align 2
+; SSE-NEXT:    store i32 [[CTLZ4]], i32* getelementptr inbounds ([8 x i32], [8 x i32]* @dst32, i32 0, i64 4), align 2
+; SSE-NEXT:    store i32 [[CTLZ5]], i32* getelementptr inbounds ([8 x i32], [8 x i32]* @dst32, i32 0, i64 5), align 2
+; SSE-NEXT:    store i32 [[CTLZ6]], i32* getelementptr inbounds ([8 x i32], [8 x i32]* @dst32, i32 0, i64 6), align 2
+; SSE-NEXT:    store i32 [[CTLZ7]], i32* getelementptr inbounds ([8 x i32], [8 x i32]* @dst32, i32 0, i64 7), align 2
+; SSE-NEXT:    ret void
+;
+; AVX1-LABEL: @ctlz_8i32(
+; AVX1-NEXT:    [[LD0:%.*]] = load i32, i32* getelementptr inbounds ([8 x i32], [8 x i32]* @src32, i32 0, i64 0), align 2
+; AVX1-NEXT:    [[LD1:%.*]] = load i32, i32* getelementptr inbounds ([8 x i32], [8 x i32]* @src32, i32 0, i64 1), align 2
+; AVX1-NEXT:    [[LD2:%.*]] = load i32, i32* getelementptr inbounds ([8 x i32], [8 x i32]* @src32, i32 0, i64 2), align 2
+; AVX1-NEXT:    [[LD3:%.*]] = load i32, i32* getelementptr inbounds ([8 x i32], [8 x i32]* @src32, i32 0, i64 3), align 2
+; AVX1-NEXT:    [[LD4:%.*]] = load i32, i32* getelementptr inbounds ([8 x i32], [8 x i32]* @src32, i32 0, i64 4), align 2
+; AVX1-NEXT:    [[LD5:%.*]] = load i32, i32* getelementptr inbounds ([8 x i32], [8 x i32]* @src32, i32 0, i64 5), align 2
+; AVX1-NEXT:    [[LD6:%.*]] = load i32, i32* getelementptr inbounds ([8 x i32], [8 x i32]* @src32, i32 0, i64 6), align 2
+; AVX1-NEXT:    [[LD7:%.*]] = load i32, i32* getelementptr inbounds ([8 x i32], [8 x i32]* @src32, i32 0, i64 7), align 2
+; AVX1-NEXT:    [[CTLZ0:%.*]] = call i32 @llvm.ctlz.i32(i32 [[LD0]], i1 false)
+; AVX1-NEXT:    [[CTLZ1:%.*]] = call i32 @llvm.ctlz.i32(i32 [[LD1]], i1 false)
+; AVX1-NEXT:    [[CTLZ2:%.*]] = call i32 @llvm.ctlz.i32(i32 [[LD2]], i1 false)
+; AVX1-NEXT:    [[CTLZ3:%.*]] = call i32 @llvm.ctlz.i32(i32 [[LD3]], i1 false)
+; AVX1-NEXT:    [[CTLZ4:%.*]] = call i32 @llvm.ctlz.i32(i32 [[LD4]], i1 false)
+; AVX1-NEXT:    [[CTLZ5:%.*]] = call i32 @llvm.ctlz.i32(i32 [[LD5]], i1 false)
+; AVX1-NEXT:    [[CTLZ6:%.*]] = call i32 @llvm.ctlz.i32(i32 [[LD6]], i1 false)
+; AVX1-NEXT:    [[CTLZ7:%.*]] = call i32 @llvm.ctlz.i32(i32 [[LD7]], i1 false)
+; AVX1-NEXT:    store i32 [[CTLZ0]], i32* getelementptr inbounds ([8 x i32], [8 x i32]* @dst32, i32 0, i64 0), align 2
+; AVX1-NEXT:    store i32 [[CTLZ1]], i32* getelementptr inbounds ([8 x i32], [8 x i32]* @dst32, i32 0, i64 1), align 2
+; AVX1-NEXT:    store i32 [[CTLZ2]], i32* getelementptr inbounds ([8 x i32], [8 x i32]* @dst32, i32 0, i64 2), align 2
+; AVX1-NEXT:    store i32 [[CTLZ3]], i32* getelementptr inbounds ([8 x i32], [8 x i32]* @dst32, i32 0, i64 3), align 2
+; AVX1-NEXT:    store i32 [[CTLZ4]], i32* getelementptr inbounds ([8 x i32], [8 x i32]* @dst32, i32 0, i64 4), align 2
+; AVX1-NEXT:    store i32 [[CTLZ5]], i32* getelementptr inbounds ([8 x i32], [8 x i32]* @dst32, i32 0, i64 5), align 2
+; AVX1-NEXT:    store i32 [[CTLZ6]], i32* getelementptr inbounds ([8 x i32], [8 x i32]* @dst32, i32 0, i64 6), align 2
+; AVX1-NEXT:    store i32 [[CTLZ7]], i32* getelementptr inbounds ([8 x i32], [8 x i32]* @dst32, i32 0, i64 7), align 2
+; AVX1-NEXT:    ret void
+;
+; AVX2-LABEL: @ctlz_8i32(
+; AVX2-NEXT:    [[TMP1:%.*]] = load <8 x i32>, <8 x i32>* bitcast ([8 x i32]* @src32 to <8 x i32>*), align 2
+; AVX2-NEXT:    [[TMP2:%.*]] = call <8 x i32> @llvm.ctlz.v8i32(<8 x i32> [[TMP1]], i1 false)
+; AVX2-NEXT:    store <8 x i32> [[TMP2]], <8 x i32>* bitcast ([8 x i32]* @dst32 to <8 x i32>*), align 2
+; AVX2-NEXT:    ret void
 ;
   %ld0 = load i32, i32* getelementptr inbounds ([8 x i32], [8 x i32]* @src32, i32 0, i64 0), align 2
   %ld1 = load i32, i32* getelementptr inbounds ([8 x i32], [8 x i32]* @src32, i32 0, i64 1), align 2
@@ -160,32 +194,44 @@ define void @ctlz_8i32() #0 {
 }
 
 define void @ctlz_8i16() #0 {
-; CHECK-LABEL: @ctlz_8i16(
-; CHECK-NEXT:    [[LD0:%.*]] = load i16, i16* getelementptr inbounds ([16 x i16], [16 x i16]* @src16, i16 0, i64 0), align 2
-; CHECK-NEXT:    [[LD1:%.*]] = load i16, i16* getelementptr inbounds ([16 x i16], [16 x i16]* @src16, i16 0, i64 1), align 2
-; CHECK-NEXT:    [[LD2:%.*]] = load i16, i16* getelementptr inbounds ([16 x i16], [16 x i16]* @src16, i16 0, i64 2), align 2
-; CHECK-NEXT:    [[LD3:%.*]] = load i16, i16* getelementptr inbounds ([16 x i16], [16 x i16]* @src16, i16 0, i64 3), align 2
-; CHECK-NEXT:    [[LD4:%.*]] = load i16, i16* getelementptr inbounds ([16 x i16], [16 x i16]* @src16, i16 0, i64 4), align 2
-; CHECK-NEXT:    [[LD5:%.*]] = load i16, i16* getelementptr inbounds ([16 x i16], [16 x i16]* @src16, i16 0, i64 5), align 2
-; CHECK-NEXT:    [[LD6:%.*]] = load i16, i16* getelementptr inbounds ([16 x i16], [16 x i16]* @src16, i16 0, i64 6), align 2
-; CHECK-NEXT:    [[LD7:%.*]] = load i16, i16* getelementptr inbounds ([16 x i16], [16 x i16]* @src16, i16 0, i64 7), align 2
-; CHECK-NEXT:    [[CTLZ0:%.*]] = call i16 @llvm.ctlz.i16(i16 [[LD0]], i1 false)
-; CHECK-NEXT:    [[CTLZ1:%.*]] = call i16 @llvm.ctlz.i16(i16 [[LD1]], i1 false)
-; CHECK-NEXT:    [[CTLZ2:%.*]] = call i16 @llvm.ctlz.i16(i16 [[LD2]], i1 false)
-; CHECK-NEXT:    [[CTLZ3:%.*]] = call i16 @llvm.ctlz.i16(i16 [[LD3]], i1 false)
-; CHECK-NEXT:    [[CTLZ4:%.*]] = call i16 @llvm.ctlz.i16(i16 [[LD4]], i1 false)
-; CHECK-NEXT:    [[CTLZ5:%.*]] = call i16 @llvm.ctlz.i16(i16 [[LD5]], i1 false)
-; CHECK-NEXT:    [[CTLZ6:%.*]] = call i16 @llvm.ctlz.i16(i16 [[LD6]], i1 false)
-; CHECK-NEXT:    [[CTLZ7:%.*]] = call i16 @llvm.ctlz.i16(i16 [[LD7]], i1 false)
-; CHECK-NEXT:    store i16 [[CTLZ0]], i16* getelementptr inbounds ([16 x i16], [16 x i16]* @dst16, i16 0, i64 0), align 2
-; CHECK-NEXT:    store i16 [[CTLZ1]], i16* getelementptr inbounds ([16 x i16], [16 x i16]* @dst16, i16 0, i64 1), align 2
-; CHECK-NEXT:    store i16 [[CTLZ2]], i16* getelementptr inbounds ([16 x i16], [16 x i16]* @dst16, i16 0, i64 2), align 2
-; CHECK-NEXT:    store i16 [[CTLZ3]], i16* getelementptr inbounds ([16 x i16], [16 x i16]* @dst16, i16 0, i64 3), align 2
-; CHECK-NEXT:    store i16 [[CTLZ4]], i16* getelementptr inbounds ([16 x i16], [16 x i16]* @dst16, i16 0, i64 4), align 2
-; CHECK-NEXT:    store i16 [[CTLZ5]], i16* getelementptr inbounds ([16 x i16], [16 x i16]* @dst16, i16 0, i64 5), align 2
-; CHECK-NEXT:    store i16 [[CTLZ6]], i16* getelementptr inbounds ([16 x i16], [16 x i16]* @dst16, i16 0, i64 6), align 2
-; CHECK-NEXT:    store i16 [[CTLZ7]], i16* getelementptr inbounds ([16 x i16], [16 x i16]* @dst16, i16 0, i64 7), align 2
-; CHECK-NEXT:    ret void
+; SSE2-LABEL: @ctlz_8i16(
+; SSE2-NEXT:    [[LD0:%.*]] = load i16, i16* getelementptr inbounds ([16 x i16], [16 x i16]* @src16, i16 0, i64 0), align 2
+; SSE2-NEXT:    [[LD1:%.*]] = load i16, i16* getelementptr inbounds ([16 x i16], [16 x i16]* @src16, i16 0, i64 1), align 2
+; SSE2-NEXT:    [[LD2:%.*]] = load i16, i16* getelementptr inbounds ([16 x i16], [16 x i16]* @src16, i16 0, i64 2), align 2
+; SSE2-NEXT:    [[LD3:%.*]] = load i16, i16* getelementptr inbounds ([16 x i16], [16 x i16]* @src16, i16 0, i64 3), align 2
+; SSE2-NEXT:    [[LD4:%.*]] = load i16, i16* getelementptr inbounds ([16 x i16], [16 x i16]* @src16, i16 0, i64 4), align 2
+; SSE2-NEXT:    [[LD5:%.*]] = load i16, i16* getelementptr inbounds ([16 x i16], [16 x i16]* @src16, i16 0, i64 5), align 2
+; SSE2-NEXT:    [[LD6:%.*]] = load i16, i16* getelementptr inbounds ([16 x i16], [16 x i16]* @src16, i16 0, i64 6), align 2
+; SSE2-NEXT:    [[LD7:%.*]] = load i16, i16* getelementptr inbounds ([16 x i16], [16 x i16]* @src16, i16 0, i64 7), align 2
+; SSE2-NEXT:    [[CTLZ0:%.*]] = call i16 @llvm.ctlz.i16(i16 [[LD0]], i1 false)
+; SSE2-NEXT:    [[CTLZ1:%.*]] = call i16 @llvm.ctlz.i16(i16 [[LD1]], i1 false)
+; SSE2-NEXT:    [[CTLZ2:%.*]] = call i16 @llvm.ctlz.i16(i16 [[LD2]], i1 false)
+; SSE2-NEXT:    [[CTLZ3:%.*]] = call i16 @llvm.ctlz.i16(i16 [[LD3]], i1 false)
+; SSE2-NEXT:    [[CTLZ4:%.*]] = call i16 @llvm.ctlz.i16(i16 [[LD4]], i1 false)
+; SSE2-NEXT:    [[CTLZ5:%.*]] = call i16 @llvm.ctlz.i16(i16 [[LD5]], i1 false)
+; SSE2-NEXT:    [[CTLZ6:%.*]] = call i16 @llvm.ctlz.i16(i16 [[LD6]], i1 false)
+; SSE2-NEXT:    [[CTLZ7:%.*]] = call i16 @llvm.ctlz.i16(i16 [[LD7]], i1 false)
+; SSE2-NEXT:    store i16 [[CTLZ0]], i16* getelementptr inbounds ([16 x i16], [16 x i16]* @dst16, i16 0, i64 0), align 2
+; SSE2-NEXT:    store i16 [[CTLZ1]], i16* getelementptr inbounds ([16 x i16], [16 x i16]* @dst16, i16 0, i64 1), align 2
+; SSE2-NEXT:    store i16 [[CTLZ2]], i16* getelementptr inbounds ([16 x i16], [16 x i16]* @dst16, i16 0, i64 2), align 2
+; SSE2-NEXT:    store i16 [[CTLZ3]], i16* getelementptr inbounds ([16 x i16], [16 x i16]* @dst16, i16 0, i64 3), align 2
+; SSE2-NEXT:    store i16 [[CTLZ4]], i16* getelementptr inbounds ([16 x i16], [16 x i16]* @dst16, i16 0, i64 4), align 2
+; SSE2-NEXT:    store i16 [[CTLZ5]], i16* getelementptr inbounds ([16 x i16], [16 x i16]* @dst16, i16 0, i64 5), align 2
+; SSE2-NEXT:    store i16 [[CTLZ6]], i16* getelementptr inbounds ([16 x i16], [16 x i16]* @dst16, i16 0, i64 6), align 2
+; SSE2-NEXT:    store i16 [[CTLZ7]], i16* getelementptr inbounds ([16 x i16], [16 x i16]* @dst16, i16 0, i64 7), align 2
+; SSE2-NEXT:    ret void
+;
+; SSE42-LABEL: @ctlz_8i16(
+; SSE42-NEXT:    [[TMP1:%.*]] = load <8 x i16>, <8 x i16>* bitcast ([16 x i16]* @src16 to <8 x i16>*), align 2
+; SSE42-NEXT:    [[TMP2:%.*]] = call <8 x i16> @llvm.ctlz.v8i16(<8 x i16> [[TMP1]], i1 false)
+; SSE42-NEXT:    store <8 x i16> [[TMP2]], <8 x i16>* bitcast ([16 x i16]* @dst16 to <8 x i16>*), align 2
+; SSE42-NEXT:    ret void
+;
+; AVX-LABEL: @ctlz_8i16(
+; AVX-NEXT:    [[TMP1:%.*]] = load <8 x i16>, <8 x i16>* bitcast ([16 x i16]* @src16 to <8 x i16>*), align 2
+; AVX-NEXT:    [[TMP2:%.*]] = call <8 x i16> @llvm.ctlz.v8i16(<8 x i16> [[TMP1]], i1 false)
+; AVX-NEXT:    store <8 x i16> [[TMP2]], <8 x i16>* bitcast ([16 x i16]* @dst16 to <8 x i16>*), align 2
+; AVX-NEXT:    ret void
 ;
   %ld0 = load i16, i16* getelementptr inbounds ([16 x i16], [16 x i16]* @src16, i16 0, i64 0), align 2
   %ld1 = load i16, i16* getelementptr inbounds ([16 x i16], [16 x i16]* @src16, i16 0, i64 1), align 2
@@ -215,56 +261,71 @@ define void @ctlz_8i16() #0 {
 }
 
 define void @ctlz_16i16() #0 {
-; CHECK-LABEL: @ctlz_16i16(
-; CHECK-NEXT:    [[LD0:%.*]] = load i16, i16* getelementptr inbounds ([16 x i16], [16 x i16]* @src16, i16 0, i64 0), align 2
-; CHECK-NEXT:    [[LD1:%.*]] = load i16, i16* getelementptr inbounds ([16 x i16], [16 x i16]* @src16, i16 0, i64 1), align 2
-; CHECK-NEXT:    [[LD2:%.*]] = load i16, i16* getelementptr inbounds ([16 x i16], [16 x i16]* @src16, i16 0, i64 2), align 2
-; CHECK-NEXT:    [[LD3:%.*]] = load i16, i16* getelementptr inbounds ([16 x i16], [16 x i16]* @src16, i16 0, i64 3), align 2
-; CHECK-NEXT:    [[LD4:%.*]] = load i16, i16* getelementptr inbounds ([16 x i16], [16 x i16]* @src16, i16 0, i64 4), align 2
-; CHECK-NEXT:    [[LD5:%.*]] = load i16, i16* getelementptr inbounds ([16 x i16], [16 x i16]* @src16, i16 0, i64 5), align 2
-; CHECK-NEXT:    [[LD6:%.*]] = load i16, i16* getelementptr inbounds ([16 x i16], [16 x i16]* @src16, i16 0, i64 6), align 2
-; CHECK-NEXT:    [[LD7:%.*]] = load i16, i16* getelementptr inbounds ([16 x i16], [16 x i16]* @src16, i16 0, i64 7), align 2
-; CHECK-NEXT:    [[LD8:%.*]] = load i16, i16* getelementptr inbounds ([16 x i16], [16 x i16]* @src16, i16 0, i64 8), align 2
-; CHECK-NEXT:    [[LD9:%.*]] = load i16, i16* getelementptr inbounds ([16 x i16], [16 x i16]* @src16, i16 0, i64 9), align 2
-; CHECK-NEXT:    [[LD10:%.*]] = load i16, i16* getelementptr inbounds ([16 x i16], [16 x i16]* @src16, i16 0, i64 10), align 2
-; CHECK-NEXT:    [[LD11:%.*]] = load i16, i16* getelementptr inbounds ([16 x i16], [16 x i16]* @src16, i16 0, i64 11), align 2
-; CHECK-NEXT:    [[LD12:%.*]] = load i16, i16* getelementptr inbounds ([16 x i16], [16 x i16]* @src16, i16 0, i64 12), align 2
-; CHECK-NEXT:    [[LD13:%.*]] = load i16, i16* getelementptr inbounds ([16 x i16], [16 x i16]* @src16, i16 0, i64 13), align 2
-; CHECK-NEXT:    [[LD14:%.*]] = load i16, i16* getelementptr inbounds ([16 x i16], [16 x i16]* @src16, i16 0, i64 14), align 2
-; CHECK-NEXT:    [[LD15:%.*]] = load i16, i16* getelementptr inbounds ([16 x i16], [16 x i16]* @src16, i16 0, i64 15), align 2
-; CHECK-NEXT:    [[CTLZ0:%.*]] = call i16 @llvm.ctlz.i16(i16 [[LD0]], i1 false)
-; CHECK-NEXT:    [[CTLZ1:%.*]] = call i16 @llvm.ctlz.i16(i16 [[LD1]], i1 false)
-; CHECK-NEXT:    [[CTLZ2:%.*]] = call i16 @llvm.ctlz.i16(i16 [[LD2]], i1 false)
-; CHECK-NEXT:    [[CTLZ3:%.*]] = call i16 @llvm.ctlz.i16(i16 [[LD3]], i1 false)
-; CHECK-NEXT:    [[CTLZ4:%.*]] = call i16 @llvm.ctlz.i16(i16 [[LD4]], i1 false)
-; CHECK-NEXT:    [[CTLZ5:%.*]] = call i16 @llvm.ctlz.i16(i16 [[LD5]], i1 false)
-; CHECK-NEXT:    [[CTLZ6:%.*]] = call i16 @llvm.ctlz.i16(i16 [[LD6]], i1 false)
-; CHECK-NEXT:    [[CTLZ7:%.*]] = call i16 @llvm.ctlz.i16(i16 [[LD7]], i1 false)
-; CHECK-NEXT:    [[CTLZ8:%.*]] = call i16 @llvm.ctlz.i16(i16 [[LD8]], i1 false)
-; CHECK-NEXT:    [[CTLZ9:%.*]] = call i16 @llvm.ctlz.i16(i16 [[LD9]], i1 false)
-; CHECK-NEXT:    [[CTLZ10:%.*]] = call i16 @llvm.ctlz.i16(i16 [[LD10]], i1 false)
-; CHECK-NEXT:    [[CTLZ11:%.*]] = call i16 @llvm.ctlz.i16(i16 [[LD11]], i1 false)
-; CHECK-NEXT:    [[CTLZ12:%.*]] = call i16 @llvm.ctlz.i16(i16 [[LD12]], i1 false)
-; CHECK-NEXT:    [[CTLZ13:%.*]] = call i16 @llvm.ctlz.i16(i16 [[LD13]], i1 false)
-; CHECK-NEXT:    [[CTLZ14:%.*]] = call i16 @llvm.ctlz.i16(i16 [[LD14]], i1 false)
-; CHECK-NEXT:    [[CTLZ15:%.*]] = call i16 @llvm.ctlz.i16(i16 [[LD15]], i1 false)
-; CHECK-NEXT:    store i16 [[CTLZ0]], i16* getelementptr inbounds ([16 x i16], [16 x i16]* @dst16, i16 0, i64 0), align 2
-; CHECK-NEXT:    store i16 [[CTLZ1]], i16* getelementptr inbounds ([16 x i16], [16 x i16]* @dst16, i16 0, i64 1), align 2
-; CHECK-NEXT:    store i16 [[CTLZ2]], i16* getelementptr inbounds ([16 x i16], [16 x i16]* @dst16, i16 0, i64 2), align 2
-; CHECK-NEXT:    store i16 [[CTLZ3]], i16* getelementptr inbounds ([16 x i16], [16 x i16]* @dst16, i16 0, i64 3), align 2
-; CHECK-NEXT:    store i16 [[CTLZ4]], i16* getelementptr inbounds ([16 x i16], [16 x i16]* @dst16, i16 0, i64 4), align 2
-; CHECK-NEXT:    store i16 [[CTLZ5]], i16* getelementptr inbounds ([16 x i16], [16 x i16]* @dst16, i16 0, i64 5), align 2
-; CHECK-NEXT:    store i16 [[CTLZ6]], i16* getelementptr inbounds ([16 x i16], [16 x i16]* @dst16, i16 0, i64 6), align 2
-; CHECK-NEXT:    store i16 [[CTLZ7]], i16* getelementptr inbounds ([16 x i16], [16 x i16]* @dst16, i16 0, i64 7), align 2
-; CHECK-NEXT:    store i16 [[CTLZ8]], i16* getelementptr inbounds ([16 x i16], [16 x i16]* @dst16, i16 0, i64 8), align 2
-; CHECK-NEXT:    store i16 [[CTLZ9]], i16* getelementptr inbounds ([16 x i16], [16 x i16]* @dst16, i16 0, i64 9), align 2
-; CHECK-NEXT:    store i16 [[CTLZ10]], i16* getelementptr inbounds ([16 x i16], [16 x i16]* @dst16, i16 0, i64 10), align 2
-; CHECK-NEXT:    store i16 [[CTLZ11]], i16* getelementptr inbounds ([16 x i16], [16 x i16]* @dst16, i16 0, i64 11), align 2
-; CHECK-NEXT:    store i16 [[CTLZ12]], i16* getelementptr inbounds ([16 x i16], [16 x i16]* @dst16, i16 0, i64 12), align 2
-; CHECK-NEXT:    store i16 [[CTLZ13]], i16* getelementptr inbounds ([16 x i16], [16 x i16]* @dst16, i16 0, i64 13), align 2
-; CHECK-NEXT:    store i16 [[CTLZ14]], i16* getelementptr inbounds ([16 x i16], [16 x i16]* @dst16, i16 0, i64 14), align 2
-; CHECK-NEXT:    store i16 [[CTLZ15]], i16* getelementptr inbounds ([16 x i16], [16 x i16]* @dst16, i16 0, i64 15), align 2
-; CHECK-NEXT:    ret void
+; SSE2-LABEL: @ctlz_16i16(
+; SSE2-NEXT:    [[LD0:%.*]] = load i16, i16* getelementptr inbounds ([16 x i16], [16 x i16]* @src16, i16 0, i64 0), align 2
+; SSE2-NEXT:    [[LD1:%.*]] = load i16, i16* getelementptr inbounds ([16 x i16], [16 x i16]* @src16, i16 0, i64 1), align 2
+; SSE2-NEXT:    [[LD2:%.*]] = load i16, i16* getelementptr inbounds ([16 x i16], [16 x i16]* @src16, i16 0, i64 2), align 2
+; SSE2-NEXT:    [[LD3:%.*]] = load i16, i16* getelementptr inbounds ([16 x i16], [16 x i16]* @src16, i16 0, i64 3), align 2
+; SSE2-NEXT:    [[LD4:%.*]] = load i16, i16* getelementptr inbounds ([16 x i16], [16 x i16]* @src16, i16 0, i64 4), align 2
+; SSE2-NEXT:    [[LD5:%.*]] = load i16, i16* getelementptr inbounds ([16 x i16], [16 x i16]* @src16, i16 0, i64 5), align 2
+; SSE2-NEXT:    [[LD6:%.*]] = load i16, i16* getelementptr inbounds ([16 x i16], [16 x i16]* @src16, i16 0, i64 6), align 2
+; SSE2-NEXT:    [[LD7:%.*]] = load i16, i16* getelementptr inbounds ([16 x i16], [16 x i16]* @src16, i16 0, i64 7), align 2
+; SSE2-NEXT:    [[LD8:%.*]] = load i16, i16* getelementptr inbounds ([16 x i16], [16 x i16]* @src16, i16 0, i64 8), align 2
+; SSE2-NEXT:    [[LD9:%.*]] = load i16, i16* getelementptr inbounds ([16 x i16], [16 x i16]* @src16, i16 0, i64 9), align 2
+; SSE2-NEXT:    [[LD10:%.*]] = load i16, i16* getelementptr inbounds ([16 x i16], [16 x i16]* @src16, i16 0, i64 10), align 2
+; SSE2-NEXT:    [[LD11:%.*]] = load i16, i16* getelementptr inbounds ([16 x i16], [16 x i16]* @src16, i16 0, i64 11), align 2
+; SSE2-NEXT:    [[LD12:%.*]] = load i16, i16* getelementptr inbounds ([16 x i16], [16 x i16]* @src16, i16 0, i64 12), align 2
+; SSE2-NEXT:    [[LD13:%.*]] = load i16, i16* getelementptr inbounds ([16 x i16], [16 x i16]* @src16, i16 0, i64 13), align 2
+; SSE2-NEXT:    [[LD14:%.*]] = load i16, i16* getelementptr inbounds ([16 x i16], [16 x i16]* @src16, i16 0, i64 14), align 2
+; SSE2-NEXT:    [[LD15:%.*]] = load i16, i16* getelementptr inbounds ([16 x i16], [16 x i16]* @src16, i16 0, i64 15), align 2
+; SSE2-NEXT:    [[CTLZ0:%.*]] = call i16 @llvm.ctlz.i16(i16 [[LD0]], i1 false)
+; SSE2-NEXT:    [[CTLZ1:%.*]] = call i16 @llvm.ctlz.i16(i16 [[LD1]], i1 false)
+; SSE2-NEXT:    [[CTLZ2:%.*]] = call i16 @llvm.ctlz.i16(i16 [[LD2]], i1 false)
+; SSE2-NEXT:    [[CTLZ3:%.*]] = call i16 @llvm.ctlz.i16(i16 [[LD3]], i1 false)
+; SSE2-NEXT:    [[CTLZ4:%.*]] = call i16 @llvm.ctlz.i16(i16 [[LD4]], i1 false)
+; SSE2-NEXT:    [[CTLZ5:%.*]] = call i16 @llvm.ctlz.i16(i16 [[LD5]], i1 false)
+; SSE2-NEXT:    [[CTLZ6:%.*]] = call i16 @llvm.ctlz.i16(i16 [[LD6]], i1 false)
+; SSE2-NEXT:    [[CTLZ7:%.*]] = call i16 @llvm.ctlz.i16(i16 [[LD7]], i1 false)
+; SSE2-NEXT:    [[CTLZ8:%.*]] = call i16 @llvm.ctlz.i16(i16 [[LD8]], i1 false)
+; SSE2-NEXT:    [[CTLZ9:%.*]] = call i16 @llvm.ctlz.i16(i16 [[LD9]], i1 false)
+; SSE2-NEXT:    [[CTLZ10:%.*]] = call i16 @llvm.ctlz.i16(i16 [[LD10]], i1 false)
+; SSE2-NEXT:    [[CTLZ11:%.*]] = call i16 @llvm.ctlz.i16(i16 [[LD11]], i1 false)
+; SSE2-NEXT:    [[CTLZ12:%.*]] = call i16 @llvm.ctlz.i16(i16 [[LD12]], i1 false)
+; SSE2-NEXT:    [[CTLZ13:%.*]] = call i16 @llvm.ctlz.i16(i16 [[LD13]], i1 false)
+; SSE2-NEXT:    [[CTLZ14:%.*]] = call i16 @llvm.ctlz.i16(i16 [[LD14]], i1 false)
+; SSE2-NEXT:    [[CTLZ15:%.*]] = call i16 @llvm.ctlz.i16(i16 [[LD15]], i1 false)
+; SSE2-NEXT:    store i16 [[CTLZ0]], i16* getelementptr inbounds ([16 x i16], [16 x i16]* @dst16, i16 0, i64 0), align 2
+; SSE2-NEXT:    store i16 [[CTLZ1]], i16* getelementptr inbounds ([16 x i16], [16 x i16]* @dst16, i16 0, i64 1), align 2
+; SSE2-NEXT:    store i16 [[CTLZ2]], i16* getelementptr inbounds ([16 x i16], [16 x i16]* @dst16, i16 0, i64 2), align 2
+; SSE2-NEXT:    store i16 [[CTLZ3]], i16* getelementptr inbounds ([16 x i16], [16 x i16]* @dst16, i16 0, i64 3), align 2
+; SSE2-NEXT:    store i16 [[CTLZ4]], i16* getelementptr inbounds ([16 x i16], [16 x i16]* @dst16, i16 0, i64 4), align 2
+; SSE2-NEXT:    store i16 [[CTLZ5]], i16* getelementptr inbounds ([16 x i16], [16 x i16]* @dst16, i16 0, i64 5), align 2
+; SSE2-NEXT:    store i16 [[CTLZ6]], i16* getelementptr inbounds ([16 x i16], [16 x i16]* @dst16, i16 0, i64 6), align 2
+; SSE2-NEXT:    store i16 [[CTLZ7]], i16* getelementptr inbounds ([16 x i16], [16 x i16]* @dst16, i16 0, i64 7), align 2
+; SSE2-NEXT:    store i16 [[CTLZ8]], i16* getelementptr inbounds ([16 x i16], [16 x i16]* @dst16, i16 0, i64 8), align 2
+; SSE2-NEXT:    store i16 [[CTLZ9]], i16* getelementptr inbounds ([16 x i16], [16 x i16]* @dst16, i16 0, i64 9), align 2
+; SSE2-NEXT:    store i16 [[CTLZ10]], i16* getelementptr inbounds ([16 x i16], [16 x i16]* @dst16, i16 0, i64 10), align 2
+; SSE2-NEXT:    store i16 [[CTLZ11]], i16* getelementptr inbounds ([16 x i16], [16 x i16]* @dst16, i16 0, i64 11), align 2
+; SSE2-NEXT:    store i16 [[CTLZ12]], i16* getelementptr inbounds ([16 x i16], [16 x i16]* @dst16, i16 0, i64 12), align 2
+; SSE2-NEXT:    store i16 [[CTLZ13]], i16* getelementptr inbounds ([16 x i16], [16 x i16]* @dst16, i16 0, i64 13), align 2
+; SSE2-NEXT:    store i16 [[CTLZ14]], i16* getelementptr inbounds ([16 x i16], [16 x i16]* @dst16, i16 0, i64 14), align 2
+; SSE2-NEXT:    store i16 [[CTLZ15]], i16* getelementptr inbounds ([16 x i16], [16 x i16]* @dst16, i16 0, i64 15), align 2
+; SSE2-NEXT:    ret void
+;
+; SSE42-LABEL: @ctlz_16i16(
+; SSE42-NEXT:    [[TMP1:%.*]] = load <8 x i16>, <8 x i16>* bitcast ([16 x i16]* @src16 to <8 x i16>*), align 2
+; SSE42-NEXT:    [[TMP2:%.*]] = load <8 x i16>, <8 x i16>* bitcast (i16* getelementptr inbounds ([16 x i16], [16 x i16]* @src16, i16 0, i64 8) to <8 x i16>*), align 2
+; SSE42-NEXT:    [[TMP3:%.*]] = call <8 x i16> @llvm.ctlz.v8i16(<8 x i16> [[TMP1]], i1 false)
+; SSE42-NEXT:    [[TMP4:%.*]] = call <8 x i16> @llvm.ctlz.v8i16(<8 x i16> [[TMP2]], i1 false)
+; SSE42-NEXT:    store <8 x i16> [[TMP3]], <8 x i16>* bitcast ([16 x i16]* @dst16 to <8 x i16>*), align 2
+; SSE42-NEXT:    store <8 x i16> [[TMP4]], <8 x i16>* bitcast (i16* getelementptr inbounds ([16 x i16], [16 x i16]* @dst16, i16 0, i64 8) to <8 x i16>*), align 2
+; SSE42-NEXT:    ret void
+;
+; AVX-LABEL: @ctlz_16i16(
+; AVX-NEXT:    [[TMP1:%.*]] = load <16 x i16>, <16 x i16>* bitcast ([16 x i16]* @src16 to <16 x i16>*), align 2
+; AVX-NEXT:    [[TMP2:%.*]] = call <16 x i16> @llvm.ctlz.v16i16(<16 x i16> [[TMP1]], i1 false)
+; AVX-NEXT:    store <16 x i16> [[TMP2]], <16 x i16>* bitcast ([16 x i16]* @dst16 to <16 x i16>*), align 2
+; AVX-NEXT:    ret void
 ;
   %ld0  = load i16, i16* getelementptr inbounds ([16 x i16], [16 x i16]* @src16, i16 0, i64  0), align 2
   %ld1  = load i16, i16* getelementptr inbounds ([16 x i16], [16 x i16]* @src16, i16 0, i64  1), align 2
@@ -318,56 +379,68 @@ define void @ctlz_16i16() #0 {
 }
 
 define void @ctlz_16i8() #0 {
-; CHECK-LABEL: @ctlz_16i8(
-; CHECK-NEXT:    [[LD0:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 0), align 1
-; CHECK-NEXT:    [[LD1:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 1), align 1
-; CHECK-NEXT:    [[LD2:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 2), align 1
-; CHECK-NEXT:    [[LD3:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 3), align 1
-; CHECK-NEXT:    [[LD4:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 4), align 1
-; CHECK-NEXT:    [[LD5:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 5), align 1
-; CHECK-NEXT:    [[LD6:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 6), align 1
-; CHECK-NEXT:    [[LD7:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 7), align 1
-; CHECK-NEXT:    [[LD8:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 8), align 1
-; CHECK-NEXT:    [[LD9:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 9), align 1
-; CHECK-NEXT:    [[LD10:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 10), align 1
-; CHECK-NEXT:    [[LD11:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 11), align 1
-; CHECK-NEXT:    [[LD12:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 12), align 1
-; CHECK-NEXT:    [[LD13:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 13), align 1
-; CHECK-NEXT:    [[LD14:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 14), align 1
-; CHECK-NEXT:    [[LD15:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 15), align 1
-; CHECK-NEXT:    [[CTLZ0:%.*]] = call i8 @llvm.ctlz.i8(i8 [[LD0]], i1 false)
-; CHECK-NEXT:    [[CTLZ1:%.*]] = call i8 @llvm.ctlz.i8(i8 [[LD1]], i1 false)
-; CHECK-NEXT:    [[CTLZ2:%.*]] = call i8 @llvm.ctlz.i8(i8 [[LD2]], i1 false)
-; CHECK-NEXT:    [[CTLZ3:%.*]] = call i8 @llvm.ctlz.i8(i8 [[LD3]], i1 false)
-; CHECK-NEXT:    [[CTLZ4:%.*]] = call i8 @llvm.ctlz.i8(i8 [[LD4]], i1 false)
-; CHECK-NEXT:    [[CTLZ5:%.*]] = call i8 @llvm.ctlz.i8(i8 [[LD5]], i1 false)
-; CHECK-NEXT:    [[CTLZ6:%.*]] = call i8 @llvm.ctlz.i8(i8 [[LD6]], i1 false)
-; CHECK-NEXT:    [[CTLZ7:%.*]] = call i8 @llvm.ctlz.i8(i8 [[LD7]], i1 false)
-; CHECK-NEXT:    [[CTLZ8:%.*]] = call i8 @llvm.ctlz.i8(i8 [[LD8]], i1 false)
-; CHECK-NEXT:    [[CTLZ9:%.*]] = call i8 @llvm.ctlz.i8(i8 [[LD9]], i1 false)
-; CHECK-NEXT:    [[CTLZ10:%.*]] = call i8 @llvm.ctlz.i8(i8 [[LD10]], i1 false)
-; CHECK-NEXT:    [[CTLZ11:%.*]] = call i8 @llvm.ctlz.i8(i8 [[LD11]], i1 false)
-; CHECK-NEXT:    [[CTLZ12:%.*]] = call i8 @llvm.ctlz.i8(i8 [[LD12]], i1 false)
-; CHECK-NEXT:    [[CTLZ13:%.*]] = call i8 @llvm.ctlz.i8(i8 [[LD13]], i1 false)
-; CHECK-NEXT:    [[CTLZ14:%.*]] = call i8 @llvm.ctlz.i8(i8 [[LD14]], i1 false)
-; CHECK-NEXT:    [[CTLZ15:%.*]] = call i8 @llvm.ctlz.i8(i8 [[LD15]], i1 false)
-; CHECK-NEXT:    store i8 [[CTLZ0]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 0), align 1
-; CHECK-NEXT:    store i8 [[CTLZ1]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 1), align 1
-; CHECK-NEXT:    store i8 [[CTLZ2]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 2), align 1
-; CHECK-NEXT:    store i8 [[CTLZ3]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 3), align 1
-; CHECK-NEXT:    store i8 [[CTLZ4]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 4), align 1
-; CHECK-NEXT:    store i8 [[CTLZ5]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 5), align 1
-; CHECK-NEXT:    store i8 [[CTLZ6]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 6), align 1
-; CHECK-NEXT:    store i8 [[CTLZ7]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 7), align 1
-; CHECK-NEXT:    store i8 [[CTLZ8]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 8), align 1
-; CHECK-NEXT:    store i8 [[CTLZ9]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 9), align 1
-; CHECK-NEXT:    store i8 [[CTLZ10]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 10), align 1
-; CHECK-NEXT:    store i8 [[CTLZ11]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 11), align 1
-; CHECK-NEXT:    store i8 [[CTLZ12]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 12), align 1
-; CHECK-NEXT:    store i8 [[CTLZ13]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 13), align 1
-; CHECK-NEXT:    store i8 [[CTLZ14]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 14), align 1
-; CHECK-NEXT:    store i8 [[CTLZ15]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 15), align 1
-; CHECK-NEXT:    ret void
+; SSE2-LABEL: @ctlz_16i8(
+; SSE2-NEXT:    [[LD0:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 0), align 1
+; SSE2-NEXT:    [[LD1:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 1), align 1
+; SSE2-NEXT:    [[LD2:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 2), align 1
+; SSE2-NEXT:    [[LD3:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 3), align 1
+; SSE2-NEXT:    [[LD4:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 4), align 1
+; SSE2-NEXT:    [[LD5:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 5), align 1
+; SSE2-NEXT:    [[LD6:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 6), align 1
+; SSE2-NEXT:    [[LD7:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 7), align 1
+; SSE2-NEXT:    [[LD8:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 8), align 1
+; SSE2-NEXT:    [[LD9:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 9), align 1
+; SSE2-NEXT:    [[LD10:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 10), align 1
+; SSE2-NEXT:    [[LD11:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 11), align 1
+; SSE2-NEXT:    [[LD12:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 12), align 1
+; SSE2-NEXT:    [[LD13:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 13), align 1
+; SSE2-NEXT:    [[LD14:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 14), align 1
+; SSE2-NEXT:    [[LD15:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 15), align 1
+; SSE2-NEXT:    [[CTLZ0:%.*]] = call i8 @llvm.ctlz.i8(i8 [[LD0]], i1 false)
+; SSE2-NEXT:    [[CTLZ1:%.*]] = call i8 @llvm.ctlz.i8(i8 [[LD1]], i1 false)
+; SSE2-NEXT:    [[CTLZ2:%.*]] = call i8 @llvm.ctlz.i8(i8 [[LD2]], i1 false)
+; SSE2-NEXT:    [[CTLZ3:%.*]] = call i8 @llvm.ctlz.i8(i8 [[LD3]], i1 false)
+; SSE2-NEXT:    [[CTLZ4:%.*]] = call i8 @llvm.ctlz.i8(i8 [[LD4]], i1 false)
+; SSE2-NEXT:    [[CTLZ5:%.*]] = call i8 @llvm.ctlz.i8(i8 [[LD5]], i1 false)
+; SSE2-NEXT:    [[CTLZ6:%.*]] = call i8 @llvm.ctlz.i8(i8 [[LD6]], i1 false)
+; SSE2-NEXT:    [[CTLZ7:%.*]] = call i8 @llvm.ctlz.i8(i8 [[LD7]], i1 false)
+; SSE2-NEXT:    [[CTLZ8:%.*]] = call i8 @llvm.ctlz.i8(i8 [[LD8]], i1 false)
+; SSE2-NEXT:    [[CTLZ9:%.*]] = call i8 @llvm.ctlz.i8(i8 [[LD9]], i1 false)
+; SSE2-NEXT:    [[CTLZ10:%.*]] = call i8 @llvm.ctlz.i8(i8 [[LD10]], i1 false)
+; SSE2-NEXT:    [[CTLZ11:%.*]] = call i8 @llvm.ctlz.i8(i8 [[LD11]], i1 false)
+; SSE2-NEXT:    [[CTLZ12:%.*]] = call i8 @llvm.ctlz.i8(i8 [[LD12]], i1 false)
+; SSE2-NEXT:    [[CTLZ13:%.*]] = call i8 @llvm.ctlz.i8(i8 [[LD13]], i1 false)
+; SSE2-NEXT:    [[CTLZ14:%.*]] = call i8 @llvm.ctlz.i8(i8 [[LD14]], i1 false)
+; SSE2-NEXT:    [[CTLZ15:%.*]] = call i8 @llvm.ctlz.i8(i8 [[LD15]], i1 false)
+; SSE2-NEXT:    store i8 [[CTLZ0]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 0), align 1
+; SSE2-NEXT:    store i8 [[CTLZ1]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 1), align 1
+; SSE2-NEXT:    store i8 [[CTLZ2]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 2), align 1
+; SSE2-NEXT:    store i8 [[CTLZ3]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 3), align 1
+; SSE2-NEXT:    store i8 [[CTLZ4]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 4), align 1
+; SSE2-NEXT:    store i8 [[CTLZ5]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 5), align 1
+; SSE2-NEXT:    store i8 [[CTLZ6]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 6), align 1
+; SSE2-NEXT:    store i8 [[CTLZ7]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 7), align 1
+; SSE2-NEXT:    store i8 [[CTLZ8]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 8), align 1
+; SSE2-NEXT:    store i8 [[CTLZ9]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 9), align 1
+; SSE2-NEXT:    store i8 [[CTLZ10]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 10), align 1
+; SSE2-NEXT:    store i8 [[CTLZ11]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 11), align 1
+; SSE2-NEXT:    store i8 [[CTLZ12]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 12), align 1
+; SSE2-NEXT:    store i8 [[CTLZ13]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 13), align 1
+; SSE2-NEXT:    store i8 [[CTLZ14]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 14), align 1
+; SSE2-NEXT:    store i8 [[CTLZ15]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 15), align 1
+; SSE2-NEXT:    ret void
+;
+; SSE42-LABEL: @ctlz_16i8(
+; SSE42-NEXT:    [[TMP1:%.*]] = load <16 x i8>, <16 x i8>* bitcast ([32 x i8]* @src8 to <16 x i8>*), align 1
+; SSE42-NEXT:    [[TMP2:%.*]] = call <16 x i8> @llvm.ctlz.v16i8(<16 x i8> [[TMP1]], i1 false)
+; SSE42-NEXT:    store <16 x i8> [[TMP2]], <16 x i8>* bitcast ([32 x i8]* @dst8 to <16 x i8>*), align 1
+; SSE42-NEXT:    ret void
+;
+; AVX-LABEL: @ctlz_16i8(
+; AVX-NEXT:    [[TMP1:%.*]] = load <16 x i8>, <16 x i8>* bitcast ([32 x i8]* @src8 to <16 x i8>*), align 1
+; AVX-NEXT:    [[TMP2:%.*]] = call <16 x i8> @llvm.ctlz.v16i8(<16 x i8> [[TMP1]], i1 false)
+; AVX-NEXT:    store <16 x i8> [[TMP2]], <16 x i8>* bitcast ([32 x i8]* @dst8 to <16 x i8>*), align 1
+; AVX-NEXT:    ret void
 ;
   %ld0  = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64  0), align 1
   %ld1  = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64  1), align 1
@@ -421,104 +494,122 @@ define void @ctlz_16i8() #0 {
 }
 
 define void @ctlz_32i8() #0 {
-; CHECK-LABEL: @ctlz_32i8(
-; CHECK-NEXT:    [[LD0:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 0), align 1
-; CHECK-NEXT:    [[LD1:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 1), align 1
-; CHECK-NEXT:    [[LD2:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 2), align 1
-; CHECK-NEXT:    [[LD3:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 3), align 1
-; CHECK-NEXT:    [[LD4:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 4), align 1
-; CHECK-NEXT:    [[LD5:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 5), align 1
-; CHECK-NEXT:    [[LD6:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 6), align 1
-; CHECK-NEXT:    [[LD7:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 7), align 1
-; CHECK-NEXT:    [[LD8:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 8), align 1
-; CHECK-NEXT:    [[LD9:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 9), align 1
-; CHECK-NEXT:    [[LD10:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 10), align 1
-; CHECK-NEXT:    [[LD11:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 11), align 1
-; CHECK-NEXT:    [[LD12:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 12), align 1
-; CHECK-NEXT:    [[LD13:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 13), align 1
-; CHECK-NEXT:    [[LD14:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 14), align 1
-; CHECK-NEXT:    [[LD15:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 15), align 1
-; CHECK-NEXT:    [[LD16:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 16), align 1
-; CHECK-NEXT:    [[LD17:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 17), align 1
-; CHECK-NEXT:    [[LD18:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 18), align 1
-; CHECK-NEXT:    [[LD19:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 19), align 1
-; CHECK-NEXT:    [[LD20:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 20), align 1
-; CHECK-NEXT:    [[LD21:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 21), align 1
-; CHECK-NEXT:    [[LD22:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 22), align 1
-; CHECK-NEXT:    [[LD23:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 23), align 1
-; CHECK-NEXT:    [[LD24:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 24), align 1
-; CHECK-NEXT:    [[LD25:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 25), align 1
-; CHECK-NEXT:    [[LD26:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 26), align 1
-; CHECK-NEXT:    [[LD27:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 27), align 1
-; CHECK-NEXT:    [[LD28:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 28), align 1
-; CHECK-NEXT:    [[LD29:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 29), align 1
-; CHECK-NEXT:    [[LD30:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 30), align 1
-; CHECK-NEXT:    [[LD31:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 31), align 1
-; CHECK-NEXT:    [[CTLZ0:%.*]] = call i8 @llvm.ctlz.i8(i8 [[LD0]], i1 false)
-; CHECK-NEXT:    [[CTLZ1:%.*]] = call i8 @llvm.ctlz.i8(i8 [[LD1]], i1 false)
-; CHECK-NEXT:    [[CTLZ2:%.*]] = call i8 @llvm.ctlz.i8(i8 [[LD2]], i1 false)
-; CHECK-NEXT:    [[CTLZ3:%.*]] = call i8 @llvm.ctlz.i8(i8 [[LD3]], i1 false)
-; CHECK-NEXT:    [[CTLZ4:%.*]] = call i8 @llvm.ctlz.i8(i8 [[LD4]], i1 false)
-; CHECK-NEXT:    [[CTLZ5:%.*]] = call i8 @llvm.ctlz.i8(i8 [[LD5]], i1 false)
-; CHECK-NEXT:    [[CTLZ6:%.*]] = call i8 @llvm.ctlz.i8(i8 [[LD6]], i1 false)
-; CHECK-NEXT:    [[CTLZ7:%.*]] = call i8 @llvm.ctlz.i8(i8 [[LD7]], i1 false)
-; CHECK-NEXT:    [[CTLZ8:%.*]] = call i8 @llvm.ctlz.i8(i8 [[LD8]], i1 false)
-; CHECK-NEXT:    [[CTLZ9:%.*]] = call i8 @llvm.ctlz.i8(i8 [[LD9]], i1 false)
-; CHECK-NEXT:    [[CTLZ10:%.*]] = call i8 @llvm.ctlz.i8(i8 [[LD10]], i1 false)
-; CHECK-NEXT:    [[CTLZ11:%.*]] = call i8 @llvm.ctlz.i8(i8 [[LD11]], i1 false)
-; CHECK-NEXT:    [[CTLZ12:%.*]] = call i8 @llvm.ctlz.i8(i8 [[LD12]], i1 false)
-; CHECK-NEXT:    [[CTLZ13:%.*]] = call i8 @llvm.ctlz.i8(i8 [[LD13]], i1 false)
-; CHECK-NEXT:    [[CTLZ14:%.*]] = call i8 @llvm.ctlz.i8(i8 [[LD14]], i1 false)
-; CHECK-NEXT:    [[CTLZ15:%.*]] = call i8 @llvm.ctlz.i8(i8 [[LD15]], i1 false)
-; CHECK-NEXT:    [[CTLZ16:%.*]] = call i8 @llvm.ctlz.i8(i8 [[LD16]], i1 false)
-; CHECK-NEXT:    [[CTLZ17:%.*]] = call i8 @llvm.ctlz.i8(i8 [[LD17]], i1 false)
-; CHECK-NEXT:    [[CTLZ18:%.*]] = call i8 @llvm.ctlz.i8(i8 [[LD18]], i1 false)
-; CHECK-NEXT:    [[CTLZ19:%.*]] = call i8 @llvm.ctlz.i8(i8 [[LD19]], i1 false)
-; CHECK-NEXT:    [[CTLZ20:%.*]] = call i8 @llvm.ctlz.i8(i8 [[LD20]], i1 false)
-; CHECK-NEXT:    [[CTLZ21:%.*]] = call i8 @llvm.ctlz.i8(i8 [[LD21]], i1 false)
-; CHECK-NEXT:    [[CTLZ22:%.*]] = call i8 @llvm.ctlz.i8(i8 [[LD22]], i1 false)
-; CHECK-NEXT:    [[CTLZ23:%.*]] = call i8 @llvm.ctlz.i8(i8 [[LD23]], i1 false)
-; CHECK-NEXT:    [[CTLZ24:%.*]] = call i8 @llvm.ctlz.i8(i8 [[LD24]], i1 false)
-; CHECK-NEXT:    [[CTLZ25:%.*]] = call i8 @llvm.ctlz.i8(i8 [[LD25]], i1 false)
-; CHECK-NEXT:    [[CTLZ26:%.*]] = call i8 @llvm.ctlz.i8(i8 [[LD26]], i1 false)
-; CHECK-NEXT:    [[CTLZ27:%.*]] = call i8 @llvm.ctlz.i8(i8 [[LD27]], i1 false)
-; CHECK-NEXT:    [[CTLZ28:%.*]] = call i8 @llvm.ctlz.i8(i8 [[LD28]], i1 false)
-; CHECK-NEXT:    [[CTLZ29:%.*]] = call i8 @llvm.ctlz.i8(i8 [[LD29]], i1 false)
-; CHECK-NEXT:    [[CTLZ30:%.*]] = call i8 @llvm.ctlz.i8(i8 [[LD30]], i1 false)
-; CHECK-NEXT:    [[CTLZ31:%.*]] = call i8 @llvm.ctlz.i8(i8 [[LD31]], i1 false)
-; CHECK-NEXT:    store i8 [[CTLZ0]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 0), align 1
-; CHECK-NEXT:    store i8 [[CTLZ1]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 1), align 1
-; CHECK-NEXT:    store i8 [[CTLZ2]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 2), align 1
-; CHECK-NEXT:    store i8 [[CTLZ3]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 3), align 1
-; CHECK-NEXT:    store i8 [[CTLZ4]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 4), align 1
-; CHECK-NEXT:    store i8 [[CTLZ5]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 5), align 1
-; CHECK-NEXT:    store i8 [[CTLZ6]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 6), align 1
-; CHECK-NEXT:    store i8 [[CTLZ7]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 7), align 1
-; CHECK-NEXT:    store i8 [[CTLZ8]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 8), align 1
-; CHECK-NEXT:    store i8 [[CTLZ9]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 9), align 1
-; CHECK-NEXT:    store i8 [[CTLZ10]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 10), align 1
-; CHECK-NEXT:    store i8 [[CTLZ11]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 11), align 1
-; CHECK-NEXT:    store i8 [[CTLZ12]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 12), align 1
-; CHECK-NEXT:    store i8 [[CTLZ13]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 13), align 1
-; CHECK-NEXT:    store i8 [[CTLZ14]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 14), align 1
-; CHECK-NEXT:    store i8 [[CTLZ15]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 15), align 1
-; CHECK-NEXT:    store i8 [[CTLZ16]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 16), align 1
-; CHECK-NEXT:    store i8 [[CTLZ17]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 17), align 1
-; CHECK-NEXT:    store i8 [[CTLZ18]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 18), align 1
-; CHECK-NEXT:    store i8 [[CTLZ19]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 19), align 1
-; CHECK-NEXT:    store i8 [[CTLZ20]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 20), align 1
-; CHECK-NEXT:    store i8 [[CTLZ21]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 21), align 1
-; CHECK-NEXT:    store i8 [[CTLZ22]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 22), align 1
-; CHECK-NEXT:    store i8 [[CTLZ23]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 23), align 1
-; CHECK-NEXT:    store i8 [[CTLZ24]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 24), align 1
-; CHECK-NEXT:    store i8 [[CTLZ25]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 25), align 1
-; CHECK-NEXT:    store i8 [[CTLZ26]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 26), align 1
-; CHECK-NEXT:    store i8 [[CTLZ27]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 27), align 1
-; CHECK-NEXT:    store i8 [[CTLZ28]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 28), align 1
-; CHECK-NEXT:    store i8 [[CTLZ29]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 29), align 1
-; CHECK-NEXT:    store i8 [[CTLZ30]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 30), align 1
-; CHECK-NEXT:    store i8 [[CTLZ31]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 31), align 1
-; CHECK-NEXT:    ret void
+; SSE2-LABEL: @ctlz_32i8(
+; SSE2-NEXT:    [[LD0:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 0), align 1
+; SSE2-NEXT:    [[LD1:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 1), align 1
+; SSE2-NEXT:    [[LD2:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 2), align 1
+; SSE2-NEXT:    [[LD3:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 3), align 1
+; SSE2-NEXT:    [[LD4:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 4), align 1
+; SSE2-NEXT:    [[LD5:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 5), align 1
+; SSE2-NEXT:    [[LD6:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 6), align 1
+; SSE2-NEXT:    [[LD7:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 7), align 1
+; SSE2-NEXT:    [[LD8:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 8), align 1
+; SSE2-NEXT:    [[LD9:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 9), align 1
+; SSE2-NEXT:    [[LD10:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 10), align 1
+; SSE2-NEXT:    [[LD11:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 11), align 1
+; SSE2-NEXT:    [[LD12:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 12), align 1
+; SSE2-NEXT:    [[LD13:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 13), align 1
+; SSE2-NEXT:    [[LD14:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 14), align 1
+; SSE2-NEXT:    [[LD15:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 15), align 1
+; SSE2-NEXT:    [[LD16:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 16), align 1
+; SSE2-NEXT:    [[LD17:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 17), align 1
+; SSE2-NEXT:    [[LD18:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 18), align 1
+; SSE2-NEXT:    [[LD19:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 19), align 1
+; SSE2-NEXT:    [[LD20:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 20), align 1
+; SSE2-NEXT:    [[LD21:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 21), align 1
+; SSE2-NEXT:    [[LD22:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 22), align 1
+; SSE2-NEXT:    [[LD23:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 23), align 1
+; SSE2-NEXT:    [[LD24:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 24), align 1
+; SSE2-NEXT:    [[LD25:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 25), align 1
+; SSE2-NEXT:    [[LD26:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 26), align 1
+; SSE2-NEXT:    [[LD27:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 27), align 1
+; SSE2-NEXT:    [[LD28:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 28), align 1
+; SSE2-NEXT:    [[LD29:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 29), align 1
+; SSE2-NEXT:    [[LD30:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 30), align 1
+; SSE2-NEXT:    [[LD31:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 31), align 1
+; SSE2-NEXT:    [[CTLZ0:%.*]] = call i8 @llvm.ctlz.i8(i8 [[LD0]], i1 false)
+; SSE2-NEXT:    [[CTLZ1:%.*]] = call i8 @llvm.ctlz.i8(i8 [[LD1]], i1 false)
+; SSE2-NEXT:    [[CTLZ2:%.*]] = call i8 @llvm.ctlz.i8(i8 [[LD2]], i1 false)
+; SSE2-NEXT:    [[CTLZ3:%.*]] = call i8 @llvm.ctlz.i8(i8 [[LD3]], i1 false)
+; SSE2-NEXT:    [[CTLZ4:%.*]] = call i8 @llvm.ctlz.i8(i8 [[LD4]], i1 false)
+; SSE2-NEXT:    [[CTLZ5:%.*]] = call i8 @llvm.ctlz.i8(i8 [[LD5]], i1 false)
+; SSE2-NEXT:    [[CTLZ6:%.*]] = call i8 @llvm.ctlz.i8(i8 [[LD6]], i1 false)
+; SSE2-NEXT:    [[CTLZ7:%.*]] = call i8 @llvm.ctlz.i8(i8 [[LD7]], i1 false)
+; SSE2-NEXT:    [[CTLZ8:%.*]] = call i8 @llvm.ctlz.i8(i8 [[LD8]], i1 false)
+; SSE2-NEXT:    [[CTLZ9:%.*]] = call i8 @llvm.ctlz.i8(i8 [[LD9]], i1 false)
+; SSE2-NEXT:    [[CTLZ10:%.*]] = call i8 @llvm.ctlz.i8(i8 [[LD10]], i1 false)
+; SSE2-NEXT:    [[CTLZ11:%.*]] = call i8 @llvm.ctlz.i8(i8 [[LD11]], i1 false)
+; SSE2-NEXT:    [[CTLZ12:%.*]] = call i8 @llvm.ctlz.i8(i8 [[LD12]], i1 false)
+; SSE2-NEXT:    [[CTLZ13:%.*]] = call i8 @llvm.ctlz.i8(i8 [[LD13]], i1 false)
+; SSE2-NEXT:    [[CTLZ14:%.*]] = call i8 @llvm.ctlz.i8(i8 [[LD14]], i1 false)
+; SSE2-NEXT:    [[CTLZ15:%.*]] = call i8 @llvm.ctlz.i8(i8 [[LD15]], i1 false)
+; SSE2-NEXT:    [[CTLZ16:%.*]] = call i8 @llvm.ctlz.i8(i8 [[LD16]], i1 false)
+; SSE2-NEXT:    [[CTLZ17:%.*]] = call i8 @llvm.ctlz.i8(i8 [[LD17]], i1 false)
+; SSE2-NEXT:    [[CTLZ18:%.*]] = call i8 @llvm.ctlz.i8(i8 [[LD18]], i1 false)
+; SSE2-NEXT:    [[CTLZ19:%.*]] = call i8 @llvm.ctlz.i8(i8 [[LD19]], i1 false)
+; SSE2-NEXT:    [[CTLZ20:%.*]] = call i8 @llvm.ctlz.i8(i8 [[LD20]], i1 false)
+; SSE2-NEXT:    [[CTLZ21:%.*]] = call i8 @llvm.ctlz.i8(i8 [[LD21]], i1 false)
+; SSE2-NEXT:    [[CTLZ22:%.*]] = call i8 @llvm.ctlz.i8(i8 [[LD22]], i1 false)
+; SSE2-NEXT:    [[CTLZ23:%.*]] = call i8 @llvm.ctlz.i8(i8 [[LD23]], i1 false)
+; SSE2-NEXT:    [[CTLZ24:%.*]] = call i8 @llvm.ctlz.i8(i8 [[LD24]], i1 false)
+; SSE2-NEXT:    [[CTLZ25:%.*]] = call i8 @llvm.ctlz.i8(i8 [[LD25]], i1 false)
+; SSE2-NEXT:    [[CTLZ26:%.*]] = call i8 @llvm.ctlz.i8(i8 [[LD26]], i1 false)
+; SSE2-NEXT:    [[CTLZ27:%.*]] = call i8 @llvm.ctlz.i8(i8 [[LD27]], i1 false)
+; SSE2-NEXT:    [[CTLZ28:%.*]] = call i8 @llvm.ctlz.i8(i8 [[LD28]], i1 false)
+; SSE2-NEXT:    [[CTLZ29:%.*]] = call i8 @llvm.ctlz.i8(i8 [[LD29]], i1 false)
+; SSE2-NEXT:    [[CTLZ30:%.*]] = call i8 @llvm.ctlz.i8(i8 [[LD30]], i1 false)
+; SSE2-NEXT:    [[CTLZ31:%.*]] = call i8 @llvm.ctlz.i8(i8 [[LD31]], i1 false)
+; SSE2-NEXT:    store i8 [[CTLZ0]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 0), align 1
+; SSE2-NEXT:    store i8 [[CTLZ1]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 1), align 1
+; SSE2-NEXT:    store i8 [[CTLZ2]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 2), align 1
+; SSE2-NEXT:    store i8 [[CTLZ3]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 3), align 1
+; SSE2-NEXT:    store i8 [[CTLZ4]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 4), align 1
+; SSE2-NEXT:    store i8 [[CTLZ5]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 5), align 1
+; SSE2-NEXT:    store i8 [[CTLZ6]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 6), align 1
+; SSE2-NEXT:    store i8 [[CTLZ7]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 7), align 1
+; SSE2-NEXT:    store i8 [[CTLZ8]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 8), align 1
+; SSE2-NEXT:    store i8 [[CTLZ9]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 9), align 1
+; SSE2-NEXT:    store i8 [[CTLZ10]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 10), align 1
+; SSE2-NEXT:    store i8 [[CTLZ11]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 11), align 1
+; SSE2-NEXT:    store i8 [[CTLZ12]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 12), align 1
+; SSE2-NEXT:    store i8 [[CTLZ13]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 13), align 1
+; SSE2-NEXT:    store i8 [[CTLZ14]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 14), align 1
+; SSE2-NEXT:    store i8 [[CTLZ15]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 15), align 1
+; SSE2-NEXT:    store i8 [[CTLZ16]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 16), align 1
+; SSE2-NEXT:    store i8 [[CTLZ17]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 17), align 1
+; SSE2-NEXT:    store i8 [[CTLZ18]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 18), align 1
+; SSE2-NEXT:    store i8 [[CTLZ19]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 19), align 1
+; SSE2-NEXT:    store i8 [[CTLZ20]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 20), align 1
+; SSE2-NEXT:    store i8 [[CTLZ21]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 21), align 1
+; SSE2-NEXT:    store i8 [[CTLZ22]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 22), align 1
+; SSE2-NEXT:    store i8 [[CTLZ23]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 23), align 1
+; SSE2-NEXT:    store i8 [[CTLZ24]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 24), align 1
+; SSE2-NEXT:    store i8 [[CTLZ25]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 25), align 1
+; SSE2-NEXT:    store i8 [[CTLZ26]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 26), align 1
+; SSE2-NEXT:    store i8 [[CTLZ27]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 27), align 1
+; SSE2-NEXT:    store i8 [[CTLZ28]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 28), align 1
+; SSE2-NEXT:    store i8 [[CTLZ29]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 29), align 1
+; SSE2-NEXT:    store i8 [[CTLZ30]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 30), align 1
+; SSE2-NEXT:    store i8 [[CTLZ31]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 31), align 1
+; SSE2-NEXT:    ret void
+;
+; SSE42-LABEL: @ctlz_32i8(
+; SSE42-NEXT:    [[TMP1:%.*]] = load <16 x i8>, <16 x i8>* bitcast ([32 x i8]* @src8 to <16 x i8>*), align 1
+; SSE42-NEXT:    [[TMP2:%.*]] = load <16 x i8>, <16 x i8>* bitcast (i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 16) to <16 x i8>*), align 1
+; SSE42-NEXT:    [[TMP3:%.*]] = call <16 x i8> @llvm.ctlz.v16i8(<16 x i8> [[TMP1]], i1 false)
+; SSE42-NEXT:    [[TMP4:%.*]] = call <16 x i8> @llvm.ctlz.v16i8(<16 x i8> [[TMP2]], i1 false)
+; SSE42-NEXT:    store <16 x i8> [[TMP3]], <16 x i8>* bitcast ([32 x i8]* @dst8 to <16 x i8>*), align 1
+; SSE42-NEXT:    store <16 x i8> [[TMP4]], <16 x i8>* bitcast (i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 16) to <16 x i8>*), align 1
+; SSE42-NEXT:    ret void
+;
+; AVX-LABEL: @ctlz_32i8(
+; AVX-NEXT:    [[TMP1:%.*]] = load <16 x i8>, <16 x i8>* bitcast ([32 x i8]* @src8 to <16 x i8>*), align 1
+; AVX-NEXT:    [[TMP2:%.*]] = load <16 x i8>, <16 x i8>* bitcast (i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 16) to <16 x i8>*), align 1
+; AVX-NEXT:    [[TMP3:%.*]] = call <16 x i8> @llvm.ctlz.v16i8(<16 x i8> [[TMP1]], i1 false)
+; AVX-NEXT:    [[TMP4:%.*]] = call <16 x i8> @llvm.ctlz.v16i8(<16 x i8> [[TMP2]], i1 false)
+; AVX-NEXT:    store <16 x i8> [[TMP3]], <16 x i8>* bitcast ([32 x i8]* @dst8 to <16 x i8>*), align 1
+; AVX-NEXT:    store <16 x i8> [[TMP4]], <16 x i8>* bitcast (i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 16) to <16 x i8>*), align 1
+; AVX-NEXT:    ret void
 ;
   %ld0  = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64  0), align 1
   %ld1  = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64  1), align 1
@@ -705,32 +796,65 @@ define void @ctlz_undef_4i32() #0 {
 }
 
 define void @ctlz_undef_8i32() #0 {
-; CHECK-LABEL: @ctlz_undef_8i32(
-; CHECK-NEXT:    [[LD0:%.*]] = load i32, i32* getelementptr inbounds ([8 x i32], [8 x i32]* @src32, i32 0, i64 0), align 2
-; CHECK-NEXT:    [[LD1:%.*]] = load i32, i32* getelementptr inbounds ([8 x i32], [8 x i32]* @src32, i32 0, i64 1), align 2
-; CHECK-NEXT:    [[LD2:%.*]] = load i32, i32* getelementptr inbounds ([8 x i32], [8 x i32]* @src32, i32 0, i64 2), align 2
-; CHECK-NEXT:    [[LD3:%.*]] = load i32, i32* getelementptr inbounds ([8 x i32], [8 x i32]* @src32, i32 0, i64 3), align 2
-; CHECK-NEXT:    [[LD4:%.*]] = load i32, i32* getelementptr inbounds ([8 x i32], [8 x i32]* @src32, i32 0, i64 4), align 2
-; CHECK-NEXT:    [[LD5:%.*]] = load i32, i32* getelementptr inbounds ([8 x i32], [8 x i32]* @src32, i32 0, i64 5), align 2
-; CHECK-NEXT:    [[LD6:%.*]] = load i32, i32* getelementptr inbounds ([8 x i32], [8 x i32]* @src32, i32 0, i64 6), align 2
-; CHECK-NEXT:    [[LD7:%.*]] = load i32, i32* getelementptr inbounds ([8 x i32], [8 x i32]* @src32, i32 0, i64 7), align 2
-; CHECK-NEXT:    [[CTLZ0:%.*]] = call i32 @llvm.ctlz.i32(i32 [[LD0]], i1 true)
-; CHECK-NEXT:    [[CTLZ1:%.*]] = call i32 @llvm.ctlz.i32(i32 [[LD1]], i1 true)
-; CHECK-NEXT:    [[CTLZ2:%.*]] = call i32 @llvm.ctlz.i32(i32 [[LD2]], i1 true)
-; CHECK-NEXT:    [[CTLZ3:%.*]] = call i32 @llvm.ctlz.i32(i32 [[LD3]], i1 true)
-; CHECK-NEXT:    [[CTLZ4:%.*]] = call i32 @llvm.ctlz.i32(i32 [[LD4]], i1 true)
-; CHECK-NEXT:    [[CTLZ5:%.*]] = call i32 @llvm.ctlz.i32(i32 [[LD5]], i1 true)
-; CHECK-NEXT:    [[CTLZ6:%.*]] = call i32 @llvm.ctlz.i32(i32 [[LD6]], i1 true)
-; CHECK-NEXT:    [[CTLZ7:%.*]] = call i32 @llvm.ctlz.i32(i32 [[LD7]], i1 true)
-; CHECK-NEXT:    store i32 [[CTLZ0]], i32* getelementptr inbounds ([8 x i32], [8 x i32]* @dst32, i32 0, i64 0), align 2
-; CHECK-NEXT:    store i32 [[CTLZ1]], i32* getelementptr inbounds ([8 x i32], [8 x i32]* @dst32, i32 0, i64 1), align 2
-; CHECK-NEXT:    store i32 [[CTLZ2]], i32* getelementptr inbounds ([8 x i32], [8 x i32]* @dst32, i32 0, i64 2), align 2
-; CHECK-NEXT:    store i32 [[CTLZ3]], i32* getelementptr inbounds ([8 x i32], [8 x i32]* @dst32, i32 0, i64 3), align 2
-; CHECK-NEXT:    store i32 [[CTLZ4]], i32* getelementptr inbounds ([8 x i32], [8 x i32]* @dst32, i32 0, i64 4), align 2
-; CHECK-NEXT:    store i32 [[CTLZ5]], i32* getelementptr inbounds ([8 x i32], [8 x i32]* @dst32, i32 0, i64 5), align 2
-; CHECK-NEXT:    store i32 [[CTLZ6]], i32* getelementptr inbounds ([8 x i32], [8 x i32]* @dst32, i32 0, i64 6), align 2
-; CHECK-NEXT:    store i32 [[CTLZ7]], i32* getelementptr inbounds ([8 x i32], [8 x i32]* @dst32, i32 0, i64 7), align 2
-; CHECK-NEXT:    ret void
+; SSE-LABEL: @ctlz_undef_8i32(
+; SSE-NEXT:    [[LD0:%.*]] = load i32, i32* getelementptr inbounds ([8 x i32], [8 x i32]* @src32, i32 0, i64 0), align 2
+; SSE-NEXT:    [[LD1:%.*]] = load i32, i32* getelementptr inbounds ([8 x i32], [8 x i32]* @src32, i32 0, i64 1), align 2
+; SSE-NEXT:    [[LD2:%.*]] = load i32, i32* getelementptr inbounds ([8 x i32], [8 x i32]* @src32, i32 0, i64 2), align 2
+; SSE-NEXT:    [[LD3:%.*]] = load i32, i32* getelementptr inbounds ([8 x i32], [8 x i32]* @src32, i32 0, i64 3), align 2
+; SSE-NEXT:    [[LD4:%.*]] = load i32, i32* getelementptr inbounds ([8 x i32], [8 x i32]* @src32, i32 0, i64 4), align 2
+; SSE-NEXT:    [[LD5:%.*]] = load i32, i32* getelementptr inbounds ([8 x i32], [8 x i32]* @src32, i32 0, i64 5), align 2
+; SSE-NEXT:    [[LD6:%.*]] = load i32, i32* getelementptr inbounds ([8 x i32], [8 x i32]* @src32, i32 0, i64 6), align 2
+; SSE-NEXT:    [[LD7:%.*]] = load i32, i32* getelementptr inbounds ([8 x i32], [8 x i32]* @src32, i32 0, i64 7), align 2
+; SSE-NEXT:    [[CTLZ0:%.*]] = call i32 @llvm.ctlz.i32(i32 [[LD0]], i1 true)
+; SSE-NEXT:    [[CTLZ1:%.*]] = call i32 @llvm.ctlz.i32(i32 [[LD1]], i1 true)
+; SSE-NEXT:    [[CTLZ2:%.*]] = call i32 @llvm.ctlz.i32(i32 [[LD2]], i1 true)
+; SSE-NEXT:    [[CTLZ3:%.*]] = call i32 @llvm.ctlz.i32(i32 [[LD3]], i1 true)
+; SSE-NEXT:    [[CTLZ4:%.*]] = call i32 @llvm.ctlz.i32(i32 [[LD4]], i1 true)
+; SSE-NEXT:    [[CTLZ5:%.*]] = call i32 @llvm.ctlz.i32(i32 [[LD5]], i1 true)
+; SSE-NEXT:    [[CTLZ6:%.*]] = call i32 @llvm.ctlz.i32(i32 [[LD6]], i1 true)
+; SSE-NEXT:    [[CTLZ7:%.*]] = call i32 @llvm.ctlz.i32(i32 [[LD7]], i1 true)
+; SSE-NEXT:    store i32 [[CTLZ0]], i32* getelementptr inbounds ([8 x i32], [8 x i32]* @dst32, i32 0, i64 0), align 2
+; SSE-NEXT:    store i32 [[CTLZ1]], i32* getelementptr inbounds ([8 x i32], [8 x i32]* @dst32, i32 0, i64 1), align 2
+; SSE-NEXT:    store i32 [[CTLZ2]], i32* getelementptr inbounds ([8 x i32], [8 x i32]* @dst32, i32 0, i64 2), align 2
+; SSE-NEXT:    store i32 [[CTLZ3]], i32* getelementptr inbounds ([8 x i32], [8 x i32]* @dst32, i32 0, i64 3), align 2
+; SSE-NEXT:    store i32 [[CTLZ4]], i32* getelementptr inbounds ([8 x i32], [8 x i32]* @dst32, i32 0, i64 4), align 2
+; SSE-NEXT:    store i32 [[CTLZ5]], i32* getelementptr inbounds ([8 x i32], [8 x i32]* @dst32, i32 0, i64 5), align 2
+; SSE-NEXT:    store i32 [[CTLZ6]], i32* getelementptr inbounds ([8 x i32], [8 x i32]* @dst32, i32 0, i64 6), align 2
+; SSE-NEXT:    store i32 [[CTLZ7]], i32* getelementptr inbounds ([8 x i32], [8 x i32]* @dst32, i32 0, i64 7), align 2
+; SSE-NEXT:    ret void
+;
+; AVX1-LABEL: @ctlz_undef_8i32(
+; AVX1-NEXT:    [[LD0:%.*]] = load i32, i32* getelementptr inbounds ([8 x i32], [8 x i32]* @src32, i32 0, i64 0), align 2
+; AVX1-NEXT:    [[LD1:%.*]] = load i32, i32* getelementptr inbounds ([8 x i32], [8 x i32]* @src32, i32 0, i64 1), align 2
+; AVX1-NEXT:    [[LD2:%.*]] = load i32, i32* getelementptr inbounds ([8 x i32], [8 x i32]* @src32, i32 0, i64 2), align 2
+; AVX1-NEXT:    [[LD3:%.*]] = load i32, i32* getelementptr inbounds ([8 x i32], [8 x i32]* @src32, i32 0, i64 3), align 2
+; AVX1-NEXT:    [[LD4:%.*]] = load i32, i32* getelementptr inbounds ([8 x i32], [8 x i32]* @src32, i32 0, i64 4), align 2
+; AVX1-NEXT:    [[LD5:%.*]] = load i32, i32* getelementptr inbounds ([8 x i32], [8 x i32]* @src32, i32 0, i64 5), align 2
+; AVX1-NEXT:    [[LD6:%.*]] = load i32, i32* getelementptr inbounds ([8 x i32], [8 x i32]* @src32, i32 0, i64 6), align 2
+; AVX1-NEXT:    [[LD7:%.*]] = load i32, i32* getelementptr inbounds ([8 x i32], [8 x i32]* @src32, i32 0, i64 7), align 2
+; AVX1-NEXT:    [[CTLZ0:%.*]] = call i32 @llvm.ctlz.i32(i32 [[LD0]], i1 true)
+; AVX1-NEXT:    [[CTLZ1:%.*]] = call i32 @llvm.ctlz.i32(i32 [[LD1]], i1 true)
+; AVX1-NEXT:    [[CTLZ2:%.*]] = call i32 @llvm.ctlz.i32(i32 [[LD2]], i1 true)
+; AVX1-NEXT:    [[CTLZ3:%.*]] = call i32 @llvm.ctlz.i32(i32 [[LD3]], i1 true)
+; AVX1-NEXT:    [[CTLZ4:%.*]] = call i32 @llvm.ctlz.i32(i32 [[LD4]], i1 true)
+; AVX1-NEXT:    [[CTLZ5:%.*]] = call i32 @llvm.ctlz.i32(i32 [[LD5]], i1 true)
+; AVX1-NEXT:    [[CTLZ6:%.*]] = call i32 @llvm.ctlz.i32(i32 [[LD6]], i1 true)
+; AVX1-NEXT:    [[CTLZ7:%.*]] = call i32 @llvm.ctlz.i32(i32 [[LD7]], i1 true)
+; AVX1-NEXT:    store i32 [[CTLZ0]], i32* getelementptr inbounds ([8 x i32], [8 x i32]* @dst32, i32 0, i64 0), align 2
+; AVX1-NEXT:    store i32 [[CTLZ1]], i32* getelementptr inbounds ([8 x i32], [8 x i32]* @dst32, i32 0, i64 1), align 2
+; AVX1-NEXT:    store i32 [[CTLZ2]], i32* getelementptr inbounds ([8 x i32], [8 x i32]* @dst32, i32 0, i64 2), align 2
+; AVX1-NEXT:    store i32 [[CTLZ3]], i32* getelementptr inbounds ([8 x i32], [8 x i32]* @dst32, i32 0, i64 3), align 2
+; AVX1-NEXT:    store i32 [[CTLZ4]], i32* getelementptr inbounds ([8 x i32], [8 x i32]* @dst32, i32 0, i64 4), align 2
+; AVX1-NEXT:    store i32 [[CTLZ5]], i32* getelementptr inbounds ([8 x i32], [8 x i32]* @dst32, i32 0, i64 5), align 2
+; AVX1-NEXT:    store i32 [[CTLZ6]], i32* getelementptr inbounds ([8 x i32], [8 x i32]* @dst32, i32 0, i64 6), align 2
+; AVX1-NEXT:    store i32 [[CTLZ7]], i32* getelementptr inbounds ([8 x i32], [8 x i32]* @dst32, i32 0, i64 7), align 2
+; AVX1-NEXT:    ret void
+;
+; AVX2-LABEL: @ctlz_undef_8i32(
+; AVX2-NEXT:    [[TMP1:%.*]] = load <8 x i32>, <8 x i32>* bitcast ([8 x i32]* @src32 to <8 x i32>*), align 2
+; AVX2-NEXT:    [[TMP2:%.*]] = call <8 x i32> @llvm.ctlz.v8i32(<8 x i32> [[TMP1]], i1 true)
+; AVX2-NEXT:    store <8 x i32> [[TMP2]], <8 x i32>* bitcast ([8 x i32]* @dst32 to <8 x i32>*), align 2
+; AVX2-NEXT:    ret void
 ;
   %ld0 = load i32, i32* getelementptr inbounds ([8 x i32], [8 x i32]* @src32, i32 0, i64 0), align 2
   %ld1 = load i32, i32* getelementptr inbounds ([8 x i32], [8 x i32]* @src32, i32 0, i64 1), align 2
@@ -760,32 +884,44 @@ define void @ctlz_undef_8i32() #0 {
 }
 
 define void @ctlz_undef_8i16() #0 {
-; CHECK-LABEL: @ctlz_undef_8i16(
-; CHECK-NEXT:    [[LD0:%.*]] = load i16, i16* getelementptr inbounds ([16 x i16], [16 x i16]* @src16, i16 0, i64 0), align 2
-; CHECK-NEXT:    [[LD1:%.*]] = load i16, i16* getelementptr inbounds ([16 x i16], [16 x i16]* @src16, i16 0, i64 1), align 2
-; CHECK-NEXT:    [[LD2:%.*]] = load i16, i16* getelementptr inbounds ([16 x i16], [16 x i16]* @src16, i16 0, i64 2), align 2
-; CHECK-NEXT:    [[LD3:%.*]] = load i16, i16* getelementptr inbounds ([16 x i16], [16 x i16]* @src16, i16 0, i64 3), align 2
-; CHECK-NEXT:    [[LD4:%.*]] = load i16, i16* getelementptr inbounds ([16 x i16], [16 x i16]* @src16, i16 0, i64 4), align 2
-; CHECK-NEXT:    [[LD5:%.*]] = load i16, i16* getelementptr inbounds ([16 x i16], [16 x i16]* @src16, i16 0, i64 5), align 2
-; CHECK-NEXT:    [[LD6:%.*]] = load i16, i16* getelementptr inbounds ([16 x i16], [16 x i16]* @src16, i16 0, i64 6), align 2
-; CHECK-NEXT:    [[LD7:%.*]] = load i16, i16* getelementptr inbounds ([16 x i16], [16 x i16]* @src16, i16 0, i64 7), align 2
-; CHECK-NEXT:    [[CTLZ0:%.*]] = call i16 @llvm.ctlz.i16(i16 [[LD0]], i1 true)
-; CHECK-NEXT:    [[CTLZ1:%.*]] = call i16 @llvm.ctlz.i16(i16 [[LD1]], i1 true)
-; CHECK-NEXT:    [[CTLZ2:%.*]] = call i16 @llvm.ctlz.i16(i16 [[LD2]], i1 true)
-; CHECK-NEXT:    [[CTLZ3:%.*]] = call i16 @llvm.ctlz.i16(i16 [[LD3]], i1 true)
-; CHECK-NEXT:    [[CTLZ4:%.*]] = call i16 @llvm.ctlz.i16(i16 [[LD4]], i1 true)
-; CHECK-NEXT:    [[CTLZ5:%.*]] = call i16 @llvm.ctlz.i16(i16 [[LD5]], i1 true)
-; CHECK-NEXT:    [[CTLZ6:%.*]] = call i16 @llvm.ctlz.i16(i16 [[LD6]], i1 true)
-; CHECK-NEXT:    [[CTLZ7:%.*]] = call i16 @llvm.ctlz.i16(i16 [[LD7]], i1 true)
-; CHECK-NEXT:    store i16 [[CTLZ0]], i16* getelementptr inbounds ([16 x i16], [16 x i16]* @dst16, i16 0, i64 0), align 2
-; CHECK-NEXT:    store i16 [[CTLZ1]], i16* getelementptr inbounds ([16 x i16], [16 x i16]* @dst16, i16 0, i64 1), align 2
-; CHECK-NEXT:    store i16 [[CTLZ2]], i16* getelementptr inbounds ([16 x i16], [16 x i16]* @dst16, i16 0, i64 2), align 2
-; CHECK-NEXT:    store i16 [[CTLZ3]], i16* getelementptr inbounds ([16 x i16], [16 x i16]* @dst16, i16 0, i64 3), align 2
-; CHECK-NEXT:    store i16 [[CTLZ4]], i16* getelementptr inbounds ([16 x i16], [16 x i16]* @dst16, i16 0, i64 4), align 2
-; CHECK-NEXT:    store i16 [[CTLZ5]], i16* getelementptr inbounds ([16 x i16], [16 x i16]* @dst16, i16 0, i64 5), align 2
-; CHECK-NEXT:    store i16 [[CTLZ6]], i16* getelementptr inbounds ([16 x i16], [16 x i16]* @dst16, i16 0, i64 6), align 2
-; CHECK-NEXT:    store i16 [[CTLZ7]], i16* getelementptr inbounds ([16 x i16], [16 x i16]* @dst16, i16 0, i64 7), align 2
-; CHECK-NEXT:    ret void
+; SSE2-LABEL: @ctlz_undef_8i16(
+; SSE2-NEXT:    [[LD0:%.*]] = load i16, i16* getelementptr inbounds ([16 x i16], [16 x i16]* @src16, i16 0, i64 0), align 2
+; SSE2-NEXT:    [[LD1:%.*]] = load i16, i16* getelementptr inbounds ([16 x i16], [16 x i16]* @src16, i16 0, i64 1), align 2
+; SSE2-NEXT:    [[LD2:%.*]] = load i16, i16* getelementptr inbounds ([16 x i16], [16 x i16]* @src16, i16 0, i64 2), align 2
+; SSE2-NEXT:    [[LD3:%.*]] = load i16, i16* getelementptr inbounds ([16 x i16], [16 x i16]* @src16, i16 0, i64 3), align 2
+; SSE2-NEXT:    [[LD4:%.*]] = load i16, i16* getelementptr inbounds ([16 x i16], [16 x i16]* @src16, i16 0, i64 4), align 2
+; SSE2-NEXT:    [[LD5:%.*]] = load i16, i16* getelementptr inbounds ([16 x i16], [16 x i16]* @src16, i16 0, i64 5), align 2
+; SSE2-NEXT:    [[LD6:%.*]] = load i16, i16* getelementptr inbounds ([16 x i16], [16 x i16]* @src16, i16 0, i64 6), align 2
+; SSE2-NEXT:    [[LD7:%.*]] = load i16, i16* getelementptr inbounds ([16 x i16], [16 x i16]* @src16, i16 0, i64 7), align 2
+; SSE2-NEXT:    [[CTLZ0:%.*]] = call i16 @llvm.ctlz.i16(i16 [[LD0]], i1 true)
+; SSE2-NEXT:    [[CTLZ1:%.*]] = call i16 @llvm.ctlz.i16(i16 [[LD1]], i1 true)
+; SSE2-NEXT:    [[CTLZ2:%.*]] = call i16 @llvm.ctlz.i16(i16 [[LD2]], i1 true)
+; SSE2-NEXT:    [[CTLZ3:%.*]] = call i16 @llvm.ctlz.i16(i16 [[LD3]], i1 true)
+; SSE2-NEXT:    [[CTLZ4:%.*]] = call i16 @llvm.ctlz.i16(i16 [[LD4]], i1 true)
+; SSE2-NEXT:    [[CTLZ5:%.*]] = call i16 @llvm.ctlz.i16(i16 [[LD5]], i1 true)
+; SSE2-NEXT:    [[CTLZ6:%.*]] = call i16 @llvm.ctlz.i16(i16 [[LD6]], i1 true)
+; SSE2-NEXT:    [[CTLZ7:%.*]] = call i16 @llvm.ctlz.i16(i16 [[LD7]], i1 true)
+; SSE2-NEXT:    store i16 [[CTLZ0]], i16* getelementptr inbounds ([16 x i16], [16 x i16]* @dst16, i16 0, i64 0), align 2
+; SSE2-NEXT:    store i16 [[CTLZ1]], i16* getelementptr inbounds ([16 x i16], [16 x i16]* @dst16, i16 0, i64 1), align 2
+; SSE2-NEXT:    store i16 [[CTLZ2]], i16* getelementptr inbounds ([16 x i16], [16 x i16]* @dst16, i16 0, i64 2), align 2
+; SSE2-NEXT:    store i16 [[CTLZ3]], i16* getelementptr inbounds ([16 x i16], [16 x i16]* @dst16, i16 0, i64 3), align 2
+; SSE2-NEXT:    store i16 [[CTLZ4]], i16* getelementptr inbounds ([16 x i16], [16 x i16]* @dst16, i16 0, i64 4), align 2
+; SSE2-NEXT:    store i16 [[CTLZ5]], i16* getelementptr inbounds ([16 x i16], [16 x i16]* @dst16, i16 0, i64 5), align 2
+; SSE2-NEXT:    store i16 [[CTLZ6]], i16* getelementptr inbounds ([16 x i16], [16 x i16]* @dst16, i16 0, i64 6), align 2
+; SSE2-NEXT:    store i16 [[CTLZ7]], i16* getelementptr inbounds ([16 x i16], [16 x i16]* @dst16, i16 0, i64 7), align 2
+; SSE2-NEXT:    ret void
+;
+; SSE42-LABEL: @ctlz_undef_8i16(
+; SSE42-NEXT:    [[TMP1:%.*]] = load <8 x i16>, <8 x i16>* bitcast ([16 x i16]* @src16 to <8 x i16>*), align 2
+; SSE42-NEXT:    [[TMP2:%.*]] = call <8 x i16> @llvm.ctlz.v8i16(<8 x i16> [[TMP1]], i1 true)
+; SSE42-NEXT:    store <8 x i16> [[TMP2]], <8 x i16>* bitcast ([16 x i16]* @dst16 to <8 x i16>*), align 2
+; SSE42-NEXT:    ret void
+;
+; AVX-LABEL: @ctlz_undef_8i16(
+; AVX-NEXT:    [[TMP1:%.*]] = load <8 x i16>, <8 x i16>* bitcast ([16 x i16]* @src16 to <8 x i16>*), align 2
+; AVX-NEXT:    [[TMP2:%.*]] = call <8 x i16> @llvm.ctlz.v8i16(<8 x i16> [[TMP1]], i1 true)
+; AVX-NEXT:    store <8 x i16> [[TMP2]], <8 x i16>* bitcast ([16 x i16]* @dst16 to <8 x i16>*), align 2
+; AVX-NEXT:    ret void
 ;
   %ld0 = load i16, i16* getelementptr inbounds ([16 x i16], [16 x i16]* @src16, i16 0, i64 0), align 2
   %ld1 = load i16, i16* getelementptr inbounds ([16 x i16], [16 x i16]* @src16, i16 0, i64 1), align 2
@@ -815,56 +951,71 @@ define void @ctlz_undef_8i16() #0 {
 }
 
 define void @ctlz_undef_16i16() #0 {
-; CHECK-LABEL: @ctlz_undef_16i16(
-; CHECK-NEXT:    [[LD0:%.*]] = load i16, i16* getelementptr inbounds ([16 x i16], [16 x i16]* @src16, i16 0, i64 0), align 2
-; CHECK-NEXT:    [[LD1:%.*]] = load i16, i16* getelementptr inbounds ([16 x i16], [16 x i16]* @src16, i16 0, i64 1), align 2
-; CHECK-NEXT:    [[LD2:%.*]] = load i16, i16* getelementptr inbounds ([16 x i16], [16 x i16]* @src16, i16 0, i64 2), align 2
-; CHECK-NEXT:    [[LD3:%.*]] = load i16, i16* getelementptr inbounds ([16 x i16], [16 x i16]* @src16, i16 0, i64 3), align 2
-; CHECK-NEXT:    [[LD4:%.*]] = load i16, i16* getelementptr inbounds ([16 x i16], [16 x i16]* @src16, i16 0, i64 4), align 2
-; CHECK-NEXT:    [[LD5:%.*]] = load i16, i16* getelementptr inbounds ([16 x i16], [16 x i16]* @src16, i16 0, i64 5), align 2
-; CHECK-NEXT:    [[LD6:%.*]] = load i16, i16* getelementptr inbounds ([16 x i16], [16 x i16]* @src16, i16 0, i64 6), align 2
-; CHECK-NEXT:    [[LD7:%.*]] = load i16, i16* getelementptr inbounds ([16 x i16], [16 x i16]* @src16, i16 0, i64 7), align 2
-; CHECK-NEXT:    [[LD8:%.*]] = load i16, i16* getelementptr inbounds ([16 x i16], [16 x i16]* @src16, i16 0, i64 8), align 2
-; CHECK-NEXT:    [[LD9:%.*]] = load i16, i16* getelementptr inbounds ([16 x i16], [16 x i16]* @src16, i16 0, i64 9), align 2
-; CHECK-NEXT:    [[LD10:%.*]] = load i16, i16* getelementptr inbounds ([16 x i16], [16 x i16]* @src16, i16 0, i64 10), align 2
-; CHECK-NEXT:    [[LD11:%.*]] = load i16, i16* getelementptr inbounds ([16 x i16], [16 x i16]* @src16, i16 0, i64 11), align 2
-; CHECK-NEXT:    [[LD12:%.*]] = load i16, i16* getelementptr inbounds ([16 x i16], [16 x i16]* @src16, i16 0, i64 12), align 2
-; CHECK-NEXT:    [[LD13:%.*]] = load i16, i16* getelementptr inbounds ([16 x i16], [16 x i16]* @src16, i16 0, i64 13), align 2
-; CHECK-NEXT:    [[LD14:%.*]] = load i16, i16* getelementptr inbounds ([16 x i16], [16 x i16]* @src16, i16 0, i64 14), align 2
-; CHECK-NEXT:    [[LD15:%.*]] = load i16, i16* getelementptr inbounds ([16 x i16], [16 x i16]* @src16, i16 0, i64 15), align 2
-; CHECK-NEXT:    [[CTLZ0:%.*]] = call i16 @llvm.ctlz.i16(i16 [[LD0]], i1 true)
-; CHECK-NEXT:    [[CTLZ1:%.*]] = call i16 @llvm.ctlz.i16(i16 [[LD1]], i1 true)
-; CHECK-NEXT:    [[CTLZ2:%.*]] = call i16 @llvm.ctlz.i16(i16 [[LD2]], i1 true)
-; CHECK-NEXT:    [[CTLZ3:%.*]] = call i16 @llvm.ctlz.i16(i16 [[LD3]], i1 true)
-; CHECK-NEXT:    [[CTLZ4:%.*]] = call i16 @llvm.ctlz.i16(i16 [[LD4]], i1 true)
-; CHECK-NEXT:    [[CTLZ5:%.*]] = call i16 @llvm.ctlz.i16(i16 [[LD5]], i1 true)
-; CHECK-NEXT:    [[CTLZ6:%.*]] = call i16 @llvm.ctlz.i16(i16 [[LD6]], i1 true)
-; CHECK-NEXT:    [[CTLZ7:%.*]] = call i16 @llvm.ctlz.i16(i16 [[LD7]], i1 true)
-; CHECK-NEXT:    [[CTLZ8:%.*]] = call i16 @llvm.ctlz.i16(i16 [[LD8]], i1 true)
-; CHECK-NEXT:    [[CTLZ9:%.*]] = call i16 @llvm.ctlz.i16(i16 [[LD9]], i1 true)
-; CHECK-NEXT:    [[CTLZ10:%.*]] = call i16 @llvm.ctlz.i16(i16 [[LD10]], i1 true)
-; CHECK-NEXT:    [[CTLZ11:%.*]] = call i16 @llvm.ctlz.i16(i16 [[LD11]], i1 true)
-; CHECK-NEXT:    [[CTLZ12:%.*]] = call i16 @llvm.ctlz.i16(i16 [[LD12]], i1 true)
-; CHECK-NEXT:    [[CTLZ13:%.*]] = call i16 @llvm.ctlz.i16(i16 [[LD13]], i1 true)
-; CHECK-NEXT:    [[CTLZ14:%.*]] = call i16 @llvm.ctlz.i16(i16 [[LD14]], i1 true)
-; CHECK-NEXT:    [[CTLZ15:%.*]] = call i16 @llvm.ctlz.i16(i16 [[LD15]], i1 true)
-; CHECK-NEXT:    store i16 [[CTLZ0]], i16* getelementptr inbounds ([16 x i16], [16 x i16]* @dst16, i16 0, i64 0), align 2
-; CHECK-NEXT:    store i16 [[CTLZ1]], i16* getelementptr inbounds ([16 x i16], [16 x i16]* @dst16, i16 0, i64 1), align 2
-; CHECK-NEXT:    store i16 [[CTLZ2]], i16* getelementptr inbounds ([16 x i16], [16 x i16]* @dst16, i16 0, i64 2), align 2
-; CHECK-NEXT:    store i16 [[CTLZ3]], i16* getelementptr inbounds ([16 x i16], [16 x i16]* @dst16, i16 0, i64 3), align 2
-; CHECK-NEXT:    store i16 [[CTLZ4]], i16* getelementptr inbounds ([16 x i16], [16 x i16]* @dst16, i16 0, i64 4), align 2
-; CHECK-NEXT:    store i16 [[CTLZ5]], i16* getelementptr inbounds ([16 x i16], [16 x i16]* @dst16, i16 0, i64 5), align 2
-; CHECK-NEXT:    store i16 [[CTLZ6]], i16* getelementptr inbounds ([16 x i16], [16 x i16]* @dst16, i16 0, i64 6), align 2
-; CHECK-NEXT:    store i16 [[CTLZ7]], i16* getelementptr inbounds ([16 x i16], [16 x i16]* @dst16, i16 0, i64 7), align 2
-; CHECK-NEXT:    store i16 [[CTLZ8]], i16* getelementptr inbounds ([16 x i16], [16 x i16]* @dst16, i16 0, i64 8), align 2
-; CHECK-NEXT:    store i16 [[CTLZ9]], i16* getelementptr inbounds ([16 x i16], [16 x i16]* @dst16, i16 0, i64 9), align 2
-; CHECK-NEXT:    store i16 [[CTLZ10]], i16* getelementptr inbounds ([16 x i16], [16 x i16]* @dst16, i16 0, i64 10), align 2
-; CHECK-NEXT:    store i16 [[CTLZ11]], i16* getelementptr inbounds ([16 x i16], [16 x i16]* @dst16, i16 0, i64 11), align 2
-; CHECK-NEXT:    store i16 [[CTLZ12]], i16* getelementptr inbounds ([16 x i16], [16 x i16]* @dst16, i16 0, i64 12), align 2
-; CHECK-NEXT:    store i16 [[CTLZ13]], i16* getelementptr inbounds ([16 x i16], [16 x i16]* @dst16, i16 0, i64 13), align 2
-; CHECK-NEXT:    store i16 [[CTLZ14]], i16* getelementptr inbounds ([16 x i16], [16 x i16]* @dst16, i16 0, i64 14), align 2
-; CHECK-NEXT:    store i16 [[CTLZ15]], i16* getelementptr inbounds ([16 x i16], [16 x i16]* @dst16, i16 0, i64 15), align 2
-; CHECK-NEXT:    ret void
+; SSE2-LABEL: @ctlz_undef_16i16(
+; SSE2-NEXT:    [[LD0:%.*]] = load i16, i16* getelementptr inbounds ([16 x i16], [16 x i16]* @src16, i16 0, i64 0), align 2
+; SSE2-NEXT:    [[LD1:%.*]] = load i16, i16* getelementptr inbounds ([16 x i16], [16 x i16]* @src16, i16 0, i64 1), align 2
+; SSE2-NEXT:    [[LD2:%.*]] = load i16, i16* getelementptr inbounds ([16 x i16], [16 x i16]* @src16, i16 0, i64 2), align 2
+; SSE2-NEXT:    [[LD3:%.*]] = load i16, i16* getelementptr inbounds ([16 x i16], [16 x i16]* @src16, i16 0, i64 3), align 2
+; SSE2-NEXT:    [[LD4:%.*]] = load i16, i16* getelementptr inbounds ([16 x i16], [16 x i16]* @src16, i16 0, i64 4), align 2
+; SSE2-NEXT:    [[LD5:%.*]] = load i16, i16* getelementptr inbounds ([16 x i16], [16 x i16]* @src16, i16 0, i64 5), align 2
+; SSE2-NEXT:    [[LD6:%.*]] = load i16, i16* getelementptr inbounds ([16 x i16], [16 x i16]* @src16, i16 0, i64 6), align 2
+; SSE2-NEXT:    [[LD7:%.*]] = load i16, i16* getelementptr inbounds ([16 x i16], [16 x i16]* @src16, i16 0, i64 7), align 2
+; SSE2-NEXT:    [[LD8:%.*]] = load i16, i16* getelementptr inbounds ([16 x i16], [16 x i16]* @src16, i16 0, i64 8), align 2
+; SSE2-NEXT:    [[LD9:%.*]] = load i16, i16* getelementptr inbounds ([16 x i16], [16 x i16]* @src16, i16 0, i64 9), align 2
+; SSE2-NEXT:    [[LD10:%.*]] = load i16, i16* getelementptr inbounds ([16 x i16], [16 x i16]* @src16, i16 0, i64 10), align 2
+; SSE2-NEXT:    [[LD11:%.*]] = load i16, i16* getelementptr inbounds ([16 x i16], [16 x i16]* @src16, i16 0, i64 11), align 2
+; SSE2-NEXT:    [[LD12:%.*]] = load i16, i16* getelementptr inbounds ([16 x i16], [16 x i16]* @src16, i16 0, i64 12), align 2
+; SSE2-NEXT:    [[LD13:%.*]] = load i16, i16* getelementptr inbounds ([16 x i16], [16 x i16]* @src16, i16 0, i64 13), align 2
+; SSE2-NEXT:    [[LD14:%.*]] = load i16, i16* getelementptr inbounds ([16 x i16], [16 x i16]* @src16, i16 0, i64 14), align 2
+; SSE2-NEXT:    [[LD15:%.*]] = load i16, i16* getelementptr inbounds ([16 x i16], [16 x i16]* @src16, i16 0, i64 15), align 2
+; SSE2-NEXT:    [[CTLZ0:%.*]] = call i16 @llvm.ctlz.i16(i16 [[LD0]], i1 true)
+; SSE2-NEXT:    [[CTLZ1:%.*]] = call i16 @llvm.ctlz.i16(i16 [[LD1]], i1 true)
+; SSE2-NEXT:    [[CTLZ2:%.*]] = call i16 @llvm.ctlz.i16(i16 [[LD2]], i1 true)
+; SSE2-NEXT:    [[CTLZ3:%.*]] = call i16 @llvm.ctlz.i16(i16 [[LD3]], i1 true)
+; SSE2-NEXT:    [[CTLZ4:%.*]] = call i16 @llvm.ctlz.i16(i16 [[LD4]], i1 true)
+; SSE2-NEXT:    [[CTLZ5:%.*]] = call i16 @llvm.ctlz.i16(i16 [[LD5]], i1 true)
+; SSE2-NEXT:    [[CTLZ6:%.*]] = call i16 @llvm.ctlz.i16(i16 [[LD6]], i1 true)
+; SSE2-NEXT:    [[CTLZ7:%.*]] = call i16 @llvm.ctlz.i16(i16 [[LD7]], i1 true)
+; SSE2-NEXT:    [[CTLZ8:%.*]] = call i16 @llvm.ctlz.i16(i16 [[LD8]], i1 true)
+; SSE2-NEXT:    [[CTLZ9:%.*]] = call i16 @llvm.ctlz.i16(i16 [[LD9]], i1 true)
+; SSE2-NEXT:    [[CTLZ10:%.*]] = call i16 @llvm.ctlz.i16(i16 [[LD10]], i1 true)
+; SSE2-NEXT:    [[CTLZ11:%.*]] = call i16 @llvm.ctlz.i16(i16 [[LD11]], i1 true)
+; SSE2-NEXT:    [[CTLZ12:%.*]] = call i16 @llvm.ctlz.i16(i16 [[LD12]], i1 true)
+; SSE2-NEXT:    [[CTLZ13:%.*]] = call i16 @llvm.ctlz.i16(i16 [[LD13]], i1 true)
+; SSE2-NEXT:    [[CTLZ14:%.*]] = call i16 @llvm.ctlz.i16(i16 [[LD14]], i1 true)
+; SSE2-NEXT:    [[CTLZ15:%.*]] = call i16 @llvm.ctlz.i16(i16 [[LD15]], i1 true)
+; SSE2-NEXT:    store i16 [[CTLZ0]], i16* getelementptr inbounds ([16 x i16], [16 x i16]* @dst16, i16 0, i64 0), align 2
+; SSE2-NEXT:    store i16 [[CTLZ1]], i16* getelementptr inbounds ([16 x i16], [16 x i16]* @dst16, i16 0, i64 1), align 2
+; SSE2-NEXT:    store i16 [[CTLZ2]], i16* getelementptr inbounds ([16 x i16], [16 x i16]* @dst16, i16 0, i64 2), align 2
+; SSE2-NEXT:    store i16 [[CTLZ3]], i16* getelementptr inbounds ([16 x i16], [16 x i16]* @dst16, i16 0, i64 3), align 2
+; SSE2-NEXT:    store i16 [[CTLZ4]], i16* getelementptr inbounds ([16 x i16], [16 x i16]* @dst16, i16 0, i64 4), align 2
+; SSE2-NEXT:    store i16 [[CTLZ5]], i16* getelementptr inbounds ([16 x i16], [16 x i16]* @dst16, i16 0, i64 5), align 2
+; SSE2-NEXT:    store i16 [[CTLZ6]], i16* getelementptr inbounds ([16 x i16], [16 x i16]* @dst16, i16 0, i64 6), align 2
+; SSE2-NEXT:    store i16 [[CTLZ7]], i16* getelementptr inbounds ([16 x i16], [16 x i16]* @dst16, i16 0, i64 7), align 2
+; SSE2-NEXT:    store i16 [[CTLZ8]], i16* getelementptr inbounds ([16 x i16], [16 x i16]* @dst16, i16 0, i64 8), align 2
+; SSE2-NEXT:    store i16 [[CTLZ9]], i16* getelementptr inbounds ([16 x i16], [16 x i16]* @dst16, i16 0, i64 9), align 2
+; SSE2-NEXT:    store i16 [[CTLZ10]], i16* getelementptr inbounds ([16 x i16], [16 x i16]* @dst16, i16 0, i64 10), align 2
+; SSE2-NEXT:    store i16 [[CTLZ11]], i16* getelementptr inbounds ([16 x i16], [16 x i16]* @dst16, i16 0, i64 11), align 2
+; SSE2-NEXT:    store i16 [[CTLZ12]], i16* getelementptr inbounds ([16 x i16], [16 x i16]* @dst16, i16 0, i64 12), align 2
+; SSE2-NEXT:    store i16 [[CTLZ13]], i16* getelementptr inbounds ([16 x i16], [16 x i16]* @dst16, i16 0, i64 13), align 2
+; SSE2-NEXT:    store i16 [[CTLZ14]], i16* getelementptr inbounds ([16 x i16], [16 x i16]* @dst16, i16 0, i64 14), align 2
+; SSE2-NEXT:    store i16 [[CTLZ15]], i16* getelementptr inbounds ([16 x i16], [16 x i16]* @dst16, i16 0, i64 15), align 2
+; SSE2-NEXT:    ret void
+;
+; SSE42-LABEL: @ctlz_undef_16i16(
+; SSE42-NEXT:    [[TMP1:%.*]] = load <8 x i16>, <8 x i16>* bitcast ([16 x i16]* @src16 to <8 x i16>*), align 2
+; SSE42-NEXT:    [[TMP2:%.*]] = load <8 x i16>, <8 x i16>* bitcast (i16* getelementptr inbounds ([16 x i16], [16 x i16]* @src16, i16 0, i64 8) to <8 x i16>*), align 2
+; SSE42-NEXT:    [[TMP3:%.*]] = call <8 x i16> @llvm.ctlz.v8i16(<8 x i16> [[TMP1]], i1 true)
+; SSE42-NEXT:    [[TMP4:%.*]] = call <8 x i16> @llvm.ctlz.v8i16(<8 x i16> [[TMP2]], i1 true)
+; SSE42-NEXT:    store <8 x i16> [[TMP3]], <8 x i16>* bitcast ([16 x i16]* @dst16 to <8 x i16>*), align 2
+; SSE42-NEXT:    store <8 x i16> [[TMP4]], <8 x i16>* bitcast (i16* getelementptr inbounds ([16 x i16], [16 x i16]* @dst16, i16 0, i64 8) to <8 x i16>*), align 2
+; SSE42-NEXT:    ret void
+;
+; AVX-LABEL: @ctlz_undef_16i16(
+; AVX-NEXT:    [[TMP1:%.*]] = load <16 x i16>, <16 x i16>* bitcast ([16 x i16]* @src16 to <16 x i16>*), align 2
+; AVX-NEXT:    [[TMP2:%.*]] = call <16 x i16> @llvm.ctlz.v16i16(<16 x i16> [[TMP1]], i1 true)
+; AVX-NEXT:    store <16 x i16> [[TMP2]], <16 x i16>* bitcast ([16 x i16]* @dst16 to <16 x i16>*), align 2
+; AVX-NEXT:    ret void
 ;
   %ld0  = load i16, i16* getelementptr inbounds ([16 x i16], [16 x i16]* @src16, i16 0, i64  0), align 2
   %ld1  = load i16, i16* getelementptr inbounds ([16 x i16], [16 x i16]* @src16, i16 0, i64  1), align 2
@@ -918,56 +1069,68 @@ define void @ctlz_undef_16i16() #0 {
 }
 
 define void @ctlz_undef_16i8() #0 {
-; CHECK-LABEL: @ctlz_undef_16i8(
-; CHECK-NEXT:    [[LD0:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 0), align 1
-; CHECK-NEXT:    [[LD1:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 1), align 1
-; CHECK-NEXT:    [[LD2:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 2), align 1
-; CHECK-NEXT:    [[LD3:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 3), align 1
-; CHECK-NEXT:    [[LD4:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 4), align 1
-; CHECK-NEXT:    [[LD5:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 5), align 1
-; CHECK-NEXT:    [[LD6:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 6), align 1
-; CHECK-NEXT:    [[LD7:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 7), align 1
-; CHECK-NEXT:    [[LD8:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 8), align 1
-; CHECK-NEXT:    [[LD9:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 9), align 1
-; CHECK-NEXT:    [[LD10:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 10), align 1
-; CHECK-NEXT:    [[LD11:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 11), align 1
-; CHECK-NEXT:    [[LD12:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 12), align 1
-; CHECK-NEXT:    [[LD13:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 13), align 1
-; CHECK-NEXT:    [[LD14:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 14), align 1
-; CHECK-NEXT:    [[LD15:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 15), align 1
-; CHECK-NEXT:    [[CTLZ0:%.*]] = call i8 @llvm.ctlz.i8(i8 [[LD0]], i1 true)
-; CHECK-NEXT:    [[CTLZ1:%.*]] = call i8 @llvm.ctlz.i8(i8 [[LD1]], i1 true)
-; CHECK-NEXT:    [[CTLZ2:%.*]] = call i8 @llvm.ctlz.i8(i8 [[LD2]], i1 true)
-; CHECK-NEXT:    [[CTLZ3:%.*]] = call i8 @llvm.ctlz.i8(i8 [[LD3]], i1 true)
-; CHECK-NEXT:    [[CTLZ4:%.*]] = call i8 @llvm.ctlz.i8(i8 [[LD4]], i1 true)
-; CHECK-NEXT:    [[CTLZ5:%.*]] = call i8 @llvm.ctlz.i8(i8 [[LD5]], i1 true)
-; CHECK-NEXT:    [[CTLZ6:%.*]] = call i8 @llvm.ctlz.i8(i8 [[LD6]], i1 true)
-; CHECK-NEXT:    [[CTLZ7:%.*]] = call i8 @llvm.ctlz.i8(i8 [[LD7]], i1 true)
-; CHECK-NEXT:    [[CTLZ8:%.*]] = call i8 @llvm.ctlz.i8(i8 [[LD8]], i1 true)
-; CHECK-NEXT:    [[CTLZ9:%.*]] = call i8 @llvm.ctlz.i8(i8 [[LD9]], i1 true)
-; CHECK-NEXT:    [[CTLZ10:%.*]] = call i8 @llvm.ctlz.i8(i8 [[LD10]], i1 true)
-; CHECK-NEXT:    [[CTLZ11:%.*]] = call i8 @llvm.ctlz.i8(i8 [[LD11]], i1 true)
-; CHECK-NEXT:    [[CTLZ12:%.*]] = call i8 @llvm.ctlz.i8(i8 [[LD12]], i1 true)
-; CHECK-NEXT:    [[CTLZ13:%.*]] = call i8 @llvm.ctlz.i8(i8 [[LD13]], i1 true)
-; CHECK-NEXT:    [[CTLZ14:%.*]] = call i8 @llvm.ctlz.i8(i8 [[LD14]], i1 true)
-; CHECK-NEXT:    [[CTLZ15:%.*]] = call i8 @llvm.ctlz.i8(i8 [[LD15]], i1 true)
-; CHECK-NEXT:    store i8 [[CTLZ0]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 0), align 1
-; CHECK-NEXT:    store i8 [[CTLZ1]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 1), align 1
-; CHECK-NEXT:    store i8 [[CTLZ2]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 2), align 1
-; CHECK-NEXT:    store i8 [[CTLZ3]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 3), align 1
-; CHECK-NEXT:    store i8 [[CTLZ4]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 4), align 1
-; CHECK-NEXT:    store i8 [[CTLZ5]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 5), align 1
-; CHECK-NEXT:    store i8 [[CTLZ6]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 6), align 1
-; CHECK-NEXT:    store i8 [[CTLZ7]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 7), align 1
-; CHECK-NEXT:    store i8 [[CTLZ8]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 8), align 1
-; CHECK-NEXT:    store i8 [[CTLZ9]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 9), align 1
-; CHECK-NEXT:    store i8 [[CTLZ10]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 10), align 1
-; CHECK-NEXT:    store i8 [[CTLZ11]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 11), align 1
-; CHECK-NEXT:    store i8 [[CTLZ12]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 12), align 1
-; CHECK-NEXT:    store i8 [[CTLZ13]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 13), align 1
-; CHECK-NEXT:    store i8 [[CTLZ14]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 14), align 1
-; CHECK-NEXT:    store i8 [[CTLZ15]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 15), align 1
-; CHECK-NEXT:    ret void
+; SSE2-LABEL: @ctlz_undef_16i8(
+; SSE2-NEXT:    [[LD0:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 0), align 1
+; SSE2-NEXT:    [[LD1:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 1), align 1
+; SSE2-NEXT:    [[LD2:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 2), align 1
+; SSE2-NEXT:    [[LD3:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 3), align 1
+; SSE2-NEXT:    [[LD4:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 4), align 1
+; SSE2-NEXT:    [[LD5:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 5), align 1
+; SSE2-NEXT:    [[LD6:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 6), align 1
+; SSE2-NEXT:    [[LD7:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 7), align 1
+; SSE2-NEXT:    [[LD8:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 8), align 1
+; SSE2-NEXT:    [[LD9:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 9), align 1
+; SSE2-NEXT:    [[LD10:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 10), align 1
+; SSE2-NEXT:    [[LD11:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 11), align 1
+; SSE2-NEXT:    [[LD12:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 12), align 1
+; SSE2-NEXT:    [[LD13:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 13), align 1
+; SSE2-NEXT:    [[LD14:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 14), align 1
+; SSE2-NEXT:    [[LD15:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 15), align 1
+; SSE2-NEXT:    [[CTLZ0:%.*]] = call i8 @llvm.ctlz.i8(i8 [[LD0]], i1 true)
+; SSE2-NEXT:    [[CTLZ1:%.*]] = call i8 @llvm.ctlz.i8(i8 [[LD1]], i1 true)
+; SSE2-NEXT:    [[CTLZ2:%.*]] = call i8 @llvm.ctlz.i8(i8 [[LD2]], i1 true)
+; SSE2-NEXT:    [[CTLZ3:%.*]] = call i8 @llvm.ctlz.i8(i8 [[LD3]], i1 true)
+; SSE2-NEXT:    [[CTLZ4:%.*]] = call i8 @llvm.ctlz.i8(i8 [[LD4]], i1 true)
+; SSE2-NEXT:    [[CTLZ5:%.*]] = call i8 @llvm.ctlz.i8(i8 [[LD5]], i1 true)
+; SSE2-NEXT:    [[CTLZ6:%.*]] = call i8 @llvm.ctlz.i8(i8 [[LD6]], i1 true)
+; SSE2-NEXT:    [[CTLZ7:%.*]] = call i8 @llvm.ctlz.i8(i8 [[LD7]], i1 true)
+; SSE2-NEXT:    [[CTLZ8:%.*]] = call i8 @llvm.ctlz.i8(i8 [[LD8]], i1 true)
+; SSE2-NEXT:    [[CTLZ9:%.*]] = call i8 @llvm.ctlz.i8(i8 [[LD9]], i1 true)
+; SSE2-NEXT:    [[CTLZ10:%.*]] = call i8 @llvm.ctlz.i8(i8 [[LD10]], i1 true)
+; SSE2-NEXT:    [[CTLZ11:%.*]] = call i8 @llvm.ctlz.i8(i8 [[LD11]], i1 true)
+; SSE2-NEXT:    [[CTLZ12:%.*]] = call i8 @llvm.ctlz.i8(i8 [[LD12]], i1 true)
+; SSE2-NEXT:    [[CTLZ13:%.*]] = call i8 @llvm.ctlz.i8(i8 [[LD13]], i1 true)
+; SSE2-NEXT:    [[CTLZ14:%.*]] = call i8 @llvm.ctlz.i8(i8 [[LD14]], i1 true)
+; SSE2-NEXT:    [[CTLZ15:%.*]] = call i8 @llvm.ctlz.i8(i8 [[LD15]], i1 true)
+; SSE2-NEXT:    store i8 [[CTLZ0]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 0), align 1
+; SSE2-NEXT:    store i8 [[CTLZ1]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 1), align 1
+; SSE2-NEXT:    store i8 [[CTLZ2]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 2), align 1
+; SSE2-NEXT:    store i8 [[CTLZ3]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 3), align 1
+; SSE2-NEXT:    store i8 [[CTLZ4]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 4), align 1
+; SSE2-NEXT:    store i8 [[CTLZ5]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 5), align 1
+; SSE2-NEXT:    store i8 [[CTLZ6]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 6), align 1
+; SSE2-NEXT:    store i8 [[CTLZ7]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 7), align 1
+; SSE2-NEXT:    store i8 [[CTLZ8]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 8), align 1
+; SSE2-NEXT:    store i8 [[CTLZ9]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 9), align 1
+; SSE2-NEXT:    store i8 [[CTLZ10]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 10), align 1
+; SSE2-NEXT:    store i8 [[CTLZ11]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 11), align 1
+; SSE2-NEXT:    store i8 [[CTLZ12]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 12), align 1
+; SSE2-NEXT:    store i8 [[CTLZ13]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 13), align 1
+; SSE2-NEXT:    store i8 [[CTLZ14]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 14), align 1
+; SSE2-NEXT:    store i8 [[CTLZ15]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 15), align 1
+; SSE2-NEXT:    ret void
+;
+; SSE42-LABEL: @ctlz_undef_16i8(
+; SSE42-NEXT:    [[TMP1:%.*]] = load <16 x i8>, <16 x i8>* bitcast ([32 x i8]* @src8 to <16 x i8>*), align 1
+; SSE42-NEXT:    [[TMP2:%.*]] = call <16 x i8> @llvm.ctlz.v16i8(<16 x i8> [[TMP1]], i1 true)
+; SSE42-NEXT:    store <16 x i8> [[TMP2]], <16 x i8>* bitcast ([32 x i8]* @dst8 to <16 x i8>*), align 1
+; SSE42-NEXT:    ret void
+;
+; AVX-LABEL: @ctlz_undef_16i8(
+; AVX-NEXT:    [[TMP1:%.*]] = load <16 x i8>, <16 x i8>* bitcast ([32 x i8]* @src8 to <16 x i8>*), align 1
+; AVX-NEXT:    [[TMP2:%.*]] = call <16 x i8> @llvm.ctlz.v16i8(<16 x i8> [[TMP1]], i1 true)
+; AVX-NEXT:    store <16 x i8> [[TMP2]], <16 x i8>* bitcast ([32 x i8]* @dst8 to <16 x i8>*), align 1
+; AVX-NEXT:    ret void
 ;
   %ld0  = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64  0), align 1
   %ld1  = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64  1), align 1
@@ -1021,104 +1184,122 @@ define void @ctlz_undef_16i8() #0 {
 }
 
 define void @ctlz_undef_32i8() #0 {
-; CHECK-LABEL: @ctlz_undef_32i8(
-; CHECK-NEXT:    [[LD0:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 0), align 1
-; CHECK-NEXT:    [[LD1:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 1), align 1
-; CHECK-NEXT:    [[LD2:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 2), align 1
-; CHECK-NEXT:    [[LD3:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 3), align 1
-; CHECK-NEXT:    [[LD4:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 4), align 1
-; CHECK-NEXT:    [[LD5:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 5), align 1
-; CHECK-NEXT:    [[LD6:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 6), align 1
-; CHECK-NEXT:    [[LD7:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 7), align 1
-; CHECK-NEXT:    [[LD8:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 8), align 1
-; CHECK-NEXT:    [[LD9:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 9), align 1
-; CHECK-NEXT:    [[LD10:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 10), align 1
-; CHECK-NEXT:    [[LD11:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 11), align 1
-; CHECK-NEXT:    [[LD12:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 12), align 1
-; CHECK-NEXT:    [[LD13:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 13), align 1
-; CHECK-NEXT:    [[LD14:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 14), align 1
-; CHECK-NEXT:    [[LD15:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 15), align 1
-; CHECK-NEXT:    [[LD16:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 16), align 1
-; CHECK-NEXT:    [[LD17:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 17), align 1
-; CHECK-NEXT:    [[LD18:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 18), align 1
-; CHECK-NEXT:    [[LD19:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 19), align 1
-; CHECK-NEXT:    [[LD20:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 20), align 1
-; CHECK-NEXT:    [[LD21:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 21), align 1
-; CHECK-NEXT:    [[LD22:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 22), align 1
-; CHECK-NEXT:    [[LD23:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 23), align 1
-; CHECK-NEXT:    [[LD24:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 24), align 1
-; CHECK-NEXT:    [[LD25:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 25), align 1
-; CHECK-NEXT:    [[LD26:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 26), align 1
-; CHECK-NEXT:    [[LD27:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 27), align 1
-; CHECK-NEXT:    [[LD28:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 28), align 1
-; CHECK-NEXT:    [[LD29:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 29), align 1
-; CHECK-NEXT:    [[LD30:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 30), align 1
-; CHECK-NEXT:    [[LD31:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 31), align 1
-; CHECK-NEXT:    [[CTLZ0:%.*]] = call i8 @llvm.ctlz.i8(i8 [[LD0]], i1 true)
-; CHECK-NEXT:    [[CTLZ1:%.*]] = call i8 @llvm.ctlz.i8(i8 [[LD1]], i1 true)
-; CHECK-NEXT:    [[CTLZ2:%.*]] = call i8 @llvm.ctlz.i8(i8 [[LD2]], i1 true)
-; CHECK-NEXT:    [[CTLZ3:%.*]] = call i8 @llvm.ctlz.i8(i8 [[LD3]], i1 true)
-; CHECK-NEXT:    [[CTLZ4:%.*]] = call i8 @llvm.ctlz.i8(i8 [[LD4]], i1 true)
-; CHECK-NEXT:    [[CTLZ5:%.*]] = call i8 @llvm.ctlz.i8(i8 [[LD5]], i1 true)
-; CHECK-NEXT:    [[CTLZ6:%.*]] = call i8 @llvm.ctlz.i8(i8 [[LD6]], i1 true)
-; CHECK-NEXT:    [[CTLZ7:%.*]] = call i8 @llvm.ctlz.i8(i8 [[LD7]], i1 true)
-; CHECK-NEXT:    [[CTLZ8:%.*]] = call i8 @llvm.ctlz.i8(i8 [[LD8]], i1 true)
-; CHECK-NEXT:    [[CTLZ9:%.*]] = call i8 @llvm.ctlz.i8(i8 [[LD9]], i1 true)
-; CHECK-NEXT:    [[CTLZ10:%.*]] = call i8 @llvm.ctlz.i8(i8 [[LD10]], i1 true)
-; CHECK-NEXT:    [[CTLZ11:%.*]] = call i8 @llvm.ctlz.i8(i8 [[LD11]], i1 true)
-; CHECK-NEXT:    [[CTLZ12:%.*]] = call i8 @llvm.ctlz.i8(i8 [[LD12]], i1 true)
-; CHECK-NEXT:    [[CTLZ13:%.*]] = call i8 @llvm.ctlz.i8(i8 [[LD13]], i1 true)
-; CHECK-NEXT:    [[CTLZ14:%.*]] = call i8 @llvm.ctlz.i8(i8 [[LD14]], i1 true)
-; CHECK-NEXT:    [[CTLZ15:%.*]] = call i8 @llvm.ctlz.i8(i8 [[LD15]], i1 true)
-; CHECK-NEXT:    [[CTLZ16:%.*]] = call i8 @llvm.ctlz.i8(i8 [[LD16]], i1 true)
-; CHECK-NEXT:    [[CTLZ17:%.*]] = call i8 @llvm.ctlz.i8(i8 [[LD17]], i1 true)
-; CHECK-NEXT:    [[CTLZ18:%.*]] = call i8 @llvm.ctlz.i8(i8 [[LD18]], i1 true)
-; CHECK-NEXT:    [[CTLZ19:%.*]] = call i8 @llvm.ctlz.i8(i8 [[LD19]], i1 true)
-; CHECK-NEXT:    [[CTLZ20:%.*]] = call i8 @llvm.ctlz.i8(i8 [[LD20]], i1 true)
-; CHECK-NEXT:    [[CTLZ21:%.*]] = call i8 @llvm.ctlz.i8(i8 [[LD21]], i1 true)
-; CHECK-NEXT:    [[CTLZ22:%.*]] = call i8 @llvm.ctlz.i8(i8 [[LD22]], i1 true)
-; CHECK-NEXT:    [[CTLZ23:%.*]] = call i8 @llvm.ctlz.i8(i8 [[LD23]], i1 true)
-; CHECK-NEXT:    [[CTLZ24:%.*]] = call i8 @llvm.ctlz.i8(i8 [[LD24]], i1 true)
-; CHECK-NEXT:    [[CTLZ25:%.*]] = call i8 @llvm.ctlz.i8(i8 [[LD25]], i1 true)
-; CHECK-NEXT:    [[CTLZ26:%.*]] = call i8 @llvm.ctlz.i8(i8 [[LD26]], i1 true)
-; CHECK-NEXT:    [[CTLZ27:%.*]] = call i8 @llvm.ctlz.i8(i8 [[LD27]], i1 true)
-; CHECK-NEXT:    [[CTLZ28:%.*]] = call i8 @llvm.ctlz.i8(i8 [[LD28]], i1 true)
-; CHECK-NEXT:    [[CTLZ29:%.*]] = call i8 @llvm.ctlz.i8(i8 [[LD29]], i1 true)
-; CHECK-NEXT:    [[CTLZ30:%.*]] = call i8 @llvm.ctlz.i8(i8 [[LD30]], i1 true)
-; CHECK-NEXT:    [[CTLZ31:%.*]] = call i8 @llvm.ctlz.i8(i8 [[LD31]], i1 true)
-; CHECK-NEXT:    store i8 [[CTLZ0]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 0), align 1
-; CHECK-NEXT:    store i8 [[CTLZ1]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 1), align 1
-; CHECK-NEXT:    store i8 [[CTLZ2]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 2), align 1
-; CHECK-NEXT:    store i8 [[CTLZ3]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 3), align 1
-; CHECK-NEXT:    store i8 [[CTLZ4]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 4), align 1
-; CHECK-NEXT:    store i8 [[CTLZ5]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 5), align 1
-; CHECK-NEXT:    store i8 [[CTLZ6]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 6), align 1
-; CHECK-NEXT:    store i8 [[CTLZ7]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 7), align 1
-; CHECK-NEXT:    store i8 [[CTLZ8]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 8), align 1
-; CHECK-NEXT:    store i8 [[CTLZ9]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 9), align 1
-; CHECK-NEXT:    store i8 [[CTLZ10]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 10), align 1
-; CHECK-NEXT:    store i8 [[CTLZ11]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 11), align 1
-; CHECK-NEXT:    store i8 [[CTLZ12]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 12), align 1
-; CHECK-NEXT:    store i8 [[CTLZ13]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 13), align 1
-; CHECK-NEXT:    store i8 [[CTLZ14]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 14), align 1
-; CHECK-NEXT:    store i8 [[CTLZ15]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 15), align 1
-; CHECK-NEXT:    store i8 [[CTLZ16]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 16), align 1
-; CHECK-NEXT:    store i8 [[CTLZ17]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 17), align 1
-; CHECK-NEXT:    store i8 [[CTLZ18]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 18), align 1
-; CHECK-NEXT:    store i8 [[CTLZ19]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 19), align 1
-; CHECK-NEXT:    store i8 [[CTLZ20]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 20), align 1
-; CHECK-NEXT:    store i8 [[CTLZ21]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 21), align 1
-; CHECK-NEXT:    store i8 [[CTLZ22]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 22), align 1
-; CHECK-NEXT:    store i8 [[CTLZ23]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 23), align 1
-; CHECK-NEXT:    store i8 [[CTLZ24]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 24), align 1
-; CHECK-NEXT:    store i8 [[CTLZ25]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 25), align 1
-; CHECK-NEXT:    store i8 [[CTLZ26]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 26), align 1
-; CHECK-NEXT:    store i8 [[CTLZ27]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 27), align 1
-; CHECK-NEXT:    store i8 [[CTLZ28]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 28), align 1
-; CHECK-NEXT:    store i8 [[CTLZ29]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 29), align 1
-; CHECK-NEXT:    store i8 [[CTLZ30]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 30), align 1
-; CHECK-NEXT:    store i8 [[CTLZ31]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 31), align 1
-; CHECK-NEXT:    ret void
+; SSE2-LABEL: @ctlz_undef_32i8(
+; SSE2-NEXT:    [[LD0:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 0), align 1
+; SSE2-NEXT:    [[LD1:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 1), align 1
+; SSE2-NEXT:    [[LD2:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 2), align 1
+; SSE2-NEXT:    [[LD3:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 3), align 1
+; SSE2-NEXT:    [[LD4:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 4), align 1
+; SSE2-NEXT:    [[LD5:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 5), align 1
+; SSE2-NEXT:    [[LD6:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 6), align 1
+; SSE2-NEXT:    [[LD7:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 7), align 1
+; SSE2-NEXT:    [[LD8:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 8), align 1
+; SSE2-NEXT:    [[LD9:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 9), align 1
+; SSE2-NEXT:    [[LD10:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 10), align 1
+; SSE2-NEXT:    [[LD11:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 11), align 1
+; SSE2-NEXT:    [[LD12:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 12), align 1
+; SSE2-NEXT:    [[LD13:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 13), align 1
+; SSE2-NEXT:    [[LD14:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 14), align 1
+; SSE2-NEXT:    [[LD15:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 15), align 1
+; SSE2-NEXT:    [[LD16:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 16), align 1
+; SSE2-NEXT:    [[LD17:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 17), align 1
+; SSE2-NEXT:    [[LD18:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 18), align 1
+; SSE2-NEXT:    [[LD19:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 19), align 1
+; SSE2-NEXT:    [[LD20:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 20), align 1
+; SSE2-NEXT:    [[LD21:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 21), align 1
+; SSE2-NEXT:    [[LD22:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 22), align 1
+; SSE2-NEXT:    [[LD23:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 23), align 1
+; SSE2-NEXT:    [[LD24:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 24), align 1
+; SSE2-NEXT:    [[LD25:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 25), align 1
+; SSE2-NEXT:    [[LD26:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 26), align 1
+; SSE2-NEXT:    [[LD27:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 27), align 1
+; SSE2-NEXT:    [[LD28:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 28), align 1
+; SSE2-NEXT:    [[LD29:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 29), align 1
+; SSE2-NEXT:    [[LD30:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 30), align 1
+; SSE2-NEXT:    [[LD31:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 31), align 1
+; SSE2-NEXT:    [[CTLZ0:%.*]] = call i8 @llvm.ctlz.i8(i8 [[LD0]], i1 true)
+; SSE2-NEXT:    [[CTLZ1:%.*]] = call i8 @llvm.ctlz.i8(i8 [[LD1]], i1 true)
+; SSE2-NEXT:    [[CTLZ2:%.*]] = call i8 @llvm.ctlz.i8(i8 [[LD2]], i1 true)
+; SSE2-NEXT:    [[CTLZ3:%.*]] = call i8 @llvm.ctlz.i8(i8 [[LD3]], i1 true)
+; SSE2-NEXT:    [[CTLZ4:%.*]] = call i8 @llvm.ctlz.i8(i8 [[LD4]], i1 true)
+; SSE2-NEXT:    [[CTLZ5:%.*]] = call i8 @llvm.ctlz.i8(i8 [[LD5]], i1 true)
+; SSE2-NEXT:    [[CTLZ6:%.*]] = call i8 @llvm.ctlz.i8(i8 [[LD6]], i1 true)
+; SSE2-NEXT:    [[CTLZ7:%.*]] = call i8 @llvm.ctlz.i8(i8 [[LD7]], i1 true)
+; SSE2-NEXT:    [[CTLZ8:%.*]] = call i8 @llvm.ctlz.i8(i8 [[LD8]], i1 true)
+; SSE2-NEXT:    [[CTLZ9:%.*]] = call i8 @llvm.ctlz.i8(i8 [[LD9]], i1 true)
+; SSE2-NEXT:    [[CTLZ10:%.*]] = call i8 @llvm.ctlz.i8(i8 [[LD10]], i1 true)
+; SSE2-NEXT:    [[CTLZ11:%.*]] = call i8 @llvm.ctlz.i8(i8 [[LD11]], i1 true)
+; SSE2-NEXT:    [[CTLZ12:%.*]] = call i8 @llvm.ctlz.i8(i8 [[LD12]], i1 true)
+; SSE2-NEXT:    [[CTLZ13:%.*]] = call i8 @llvm.ctlz.i8(i8 [[LD13]], i1 true)
+; SSE2-NEXT:    [[CTLZ14:%.*]] = call i8 @llvm.ctlz.i8(i8 [[LD14]], i1 true)
+; SSE2-NEXT:    [[CTLZ15:%.*]] = call i8 @llvm.ctlz.i8(i8 [[LD15]], i1 true)
+; SSE2-NEXT:    [[CTLZ16:%.*]] = call i8 @llvm.ctlz.i8(i8 [[LD16]], i1 true)
+; SSE2-NEXT:    [[CTLZ17:%.*]] = call i8 @llvm.ctlz.i8(i8 [[LD17]], i1 true)
+; SSE2-NEXT:    [[CTLZ18:%.*]] = call i8 @llvm.ctlz.i8(i8 [[LD18]], i1 true)
+; SSE2-NEXT:    [[CTLZ19:%.*]] = call i8 @llvm.ctlz.i8(i8 [[LD19]], i1 true)
+; SSE2-NEXT:    [[CTLZ20:%.*]] = call i8 @llvm.ctlz.i8(i8 [[LD20]], i1 true)
+; SSE2-NEXT:    [[CTLZ21:%.*]] = call i8 @llvm.ctlz.i8(i8 [[LD21]], i1 true)
+; SSE2-NEXT:    [[CTLZ22:%.*]] = call i8 @llvm.ctlz.i8(i8 [[LD22]], i1 true)
+; SSE2-NEXT:    [[CTLZ23:%.*]] = call i8 @llvm.ctlz.i8(i8 [[LD23]], i1 true)
+; SSE2-NEXT:    [[CTLZ24:%.*]] = call i8 @llvm.ctlz.i8(i8 [[LD24]], i1 true)
+; SSE2-NEXT:    [[CTLZ25:%.*]] = call i8 @llvm.ctlz.i8(i8 [[LD25]], i1 true)
+; SSE2-NEXT:    [[CTLZ26:%.*]] = call i8 @llvm.ctlz.i8(i8 [[LD26]], i1 true)
+; SSE2-NEXT:    [[CTLZ27:%.*]] = call i8 @llvm.ctlz.i8(i8 [[LD27]], i1 true)
+; SSE2-NEXT:    [[CTLZ28:%.*]] = call i8 @llvm.ctlz.i8(i8 [[LD28]], i1 true)
+; SSE2-NEXT:    [[CTLZ29:%.*]] = call i8 @llvm.ctlz.i8(i8 [[LD29]], i1 true)
+; SSE2-NEXT:    [[CTLZ30:%.*]] = call i8 @llvm.ctlz.i8(i8 [[LD30]], i1 true)
+; SSE2-NEXT:    [[CTLZ31:%.*]] = call i8 @llvm.ctlz.i8(i8 [[LD31]], i1 true)
+; SSE2-NEXT:    store i8 [[CTLZ0]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 0), align 1
+; SSE2-NEXT:    store i8 [[CTLZ1]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 1), align 1
+; SSE2-NEXT:    store i8 [[CTLZ2]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 2), align 1
+; SSE2-NEXT:    store i8 [[CTLZ3]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 3), align 1
+; SSE2-NEXT:    store i8 [[CTLZ4]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 4), align 1
+; SSE2-NEXT:    store i8 [[CTLZ5]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 5), align 1
+; SSE2-NEXT:    store i8 [[CTLZ6]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 6), align 1
+; SSE2-NEXT:    store i8 [[CTLZ7]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 7), align 1
+; SSE2-NEXT:    store i8 [[CTLZ8]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 8), align 1
+; SSE2-NEXT:    store i8 [[CTLZ9]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 9), align 1
+; SSE2-NEXT:    store i8 [[CTLZ10]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 10), align 1
+; SSE2-NEXT:    store i8 [[CTLZ11]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 11), align 1
+; SSE2-NEXT:    store i8 [[CTLZ12]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 12), align 1
+; SSE2-NEXT:    store i8 [[CTLZ13]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 13), align 1
+; SSE2-NEXT:    store i8 [[CTLZ14]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 14), align 1
+; SSE2-NEXT:    store i8 [[CTLZ15]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 15), align 1
+; SSE2-NEXT:    store i8 [[CTLZ16]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 16), align 1
+; SSE2-NEXT:    store i8 [[CTLZ17]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 17), align 1
+; SSE2-NEXT:    store i8 [[CTLZ18]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 18), align 1
+; SSE2-NEXT:    store i8 [[CTLZ19]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 19), align 1
+; SSE2-NEXT:    store i8 [[CTLZ20]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 20), align 1
+; SSE2-NEXT:    store i8 [[CTLZ21]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 21), align 1
+; SSE2-NEXT:    store i8 [[CTLZ22]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 22), align 1
+; SSE2-NEXT:    store i8 [[CTLZ23]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 23), align 1
+; SSE2-NEXT:    store i8 [[CTLZ24]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 24), align 1
+; SSE2-NEXT:    store i8 [[CTLZ25]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 25), align 1
+; SSE2-NEXT:    store i8 [[CTLZ26]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 26), align 1
+; SSE2-NEXT:    store i8 [[CTLZ27]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 27), align 1
+; SSE2-NEXT:    store i8 [[CTLZ28]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 28), align 1
+; SSE2-NEXT:    store i8 [[CTLZ29]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 29), align 1
+; SSE2-NEXT:    store i8 [[CTLZ30]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 30), align 1
+; SSE2-NEXT:    store i8 [[CTLZ31]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 31), align 1
+; SSE2-NEXT:    ret void
+;
+; SSE42-LABEL: @ctlz_undef_32i8(
+; SSE42-NEXT:    [[TMP1:%.*]] = load <16 x i8>, <16 x i8>* bitcast ([32 x i8]* @src8 to <16 x i8>*), align 1
+; SSE42-NEXT:    [[TMP2:%.*]] = load <16 x i8>, <16 x i8>* bitcast (i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 16) to <16 x i8>*), align 1
+; SSE42-NEXT:    [[TMP3:%.*]] = call <16 x i8> @llvm.ctlz.v16i8(<16 x i8> [[TMP1]], i1 true)
+; SSE42-NEXT:    [[TMP4:%.*]] = call <16 x i8> @llvm.ctlz.v16i8(<16 x i8> [[TMP2]], i1 true)
+; SSE42-NEXT:    store <16 x i8> [[TMP3]], <16 x i8>* bitcast ([32 x i8]* @dst8 to <16 x i8>*), align 1
+; SSE42-NEXT:    store <16 x i8> [[TMP4]], <16 x i8>* bitcast (i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 16) to <16 x i8>*), align 1
+; SSE42-NEXT:    ret void
+;
+; AVX-LABEL: @ctlz_undef_32i8(
+; AVX-NEXT:    [[TMP1:%.*]] = load <16 x i8>, <16 x i8>* bitcast ([32 x i8]* @src8 to <16 x i8>*), align 1
+; AVX-NEXT:    [[TMP2:%.*]] = load <16 x i8>, <16 x i8>* bitcast (i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 16) to <16 x i8>*), align 1
+; AVX-NEXT:    [[TMP3:%.*]] = call <16 x i8> @llvm.ctlz.v16i8(<16 x i8> [[TMP1]], i1 true)
+; AVX-NEXT:    [[TMP4:%.*]] = call <16 x i8> @llvm.ctlz.v16i8(<16 x i8> [[TMP2]], i1 true)
+; AVX-NEXT:    store <16 x i8> [[TMP3]], <16 x i8>* bitcast ([32 x i8]* @dst8 to <16 x i8>*), align 1
+; AVX-NEXT:    store <16 x i8> [[TMP4]], <16 x i8>* bitcast (i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 16) to <16 x i8>*), align 1
+; AVX-NEXT:    ret void
 ;
   %ld0  = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64  0), align 1
   %ld1  = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64  1), align 1

Modified: llvm/trunk/test/Transforms/SLPVectorizer/X86/cttz.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/Transforms/SLPVectorizer/X86/cttz.ll?rev=277716&r1=277715&r2=277716&view=diff
==============================================================================
--- llvm/trunk/test/Transforms/SLPVectorizer/X86/cttz.ll (original)
+++ llvm/trunk/test/Transforms/SLPVectorizer/X86/cttz.ll Thu Aug  4 05:51:41 2016
@@ -1,7 +1,8 @@
 ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
-; RUN: opt < %s -mtriple=x86_64-unknown -basicaa -slp-vectorizer -S | FileCheck %s --check-prefix=CHECK --check-prefix=SSE
-; RUN: opt < %s -mtriple=x86_64-unknown -mcpu=corei7-avx -basicaa -slp-vectorizer -S | FileCheck %s --check-prefix=CHECK --check-prefix=AVX
-; RUN: opt < %s -mtriple=x86_64-unknown -mcpu=core-avx2 -basicaa -slp-vectorizer -S | FileCheck %s --check-prefix=CHECK --check-prefix=AVX
+; RUN: opt < %s -mtriple=x86_64-unknown -basicaa -slp-vectorizer -S | FileCheck %s --check-prefix=CHECK --check-prefix=SSE --check-prefix=SSE2
+; RUN: opt < %s -mtriple=x86_64-unknown -mcpu=corei7 -basicaa -slp-vectorizer -S | FileCheck %s --check-prefix=CHECK --check-prefix=SSE --check-prefix=SSE42
+; RUN: opt < %s -mtriple=x86_64-unknown -mcpu=corei7-avx -basicaa -slp-vectorizer -S | FileCheck %s --check-prefix=CHECK --check-prefix=AVX --check-prefix=AVX1
+; RUN: opt < %s -mtriple=x86_64-unknown -mcpu=core-avx2 -basicaa -slp-vectorizer -S | FileCheck %s --check-prefix=CHECK --check-prefix=AVX --check-prefix=AVX2
 
 target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
 
@@ -105,32 +106,65 @@ define void @cttz_4i32() #0 {
 }
 
 define void @cttz_8i32() #0 {
-; CHECK-LABEL: @cttz_8i32(
-; CHECK-NEXT:    [[LD0:%.*]] = load i32, i32* getelementptr inbounds ([8 x i32], [8 x i32]* @src32, i32 0, i64 0), align 2
-; CHECK-NEXT:    [[LD1:%.*]] = load i32, i32* getelementptr inbounds ([8 x i32], [8 x i32]* @src32, i32 0, i64 1), align 2
-; CHECK-NEXT:    [[LD2:%.*]] = load i32, i32* getelementptr inbounds ([8 x i32], [8 x i32]* @src32, i32 0, i64 2), align 2
-; CHECK-NEXT:    [[LD3:%.*]] = load i32, i32* getelementptr inbounds ([8 x i32], [8 x i32]* @src32, i32 0, i64 3), align 2
-; CHECK-NEXT:    [[LD4:%.*]] = load i32, i32* getelementptr inbounds ([8 x i32], [8 x i32]* @src32, i32 0, i64 4), align 2
-; CHECK-NEXT:    [[LD5:%.*]] = load i32, i32* getelementptr inbounds ([8 x i32], [8 x i32]* @src32, i32 0, i64 5), align 2
-; CHECK-NEXT:    [[LD6:%.*]] = load i32, i32* getelementptr inbounds ([8 x i32], [8 x i32]* @src32, i32 0, i64 6), align 2
-; CHECK-NEXT:    [[LD7:%.*]] = load i32, i32* getelementptr inbounds ([8 x i32], [8 x i32]* @src32, i32 0, i64 7), align 2
-; CHECK-NEXT:    [[CTTZ0:%.*]] = call i32 @llvm.cttz.i32(i32 [[LD0]], i1 false)
-; CHECK-NEXT:    [[CTTZ1:%.*]] = call i32 @llvm.cttz.i32(i32 [[LD1]], i1 false)
-; CHECK-NEXT:    [[CTTZ2:%.*]] = call i32 @llvm.cttz.i32(i32 [[LD2]], i1 false)
-; CHECK-NEXT:    [[CTTZ3:%.*]] = call i32 @llvm.cttz.i32(i32 [[LD3]], i1 false)
-; CHECK-NEXT:    [[CTTZ4:%.*]] = call i32 @llvm.cttz.i32(i32 [[LD4]], i1 false)
-; CHECK-NEXT:    [[CTTZ5:%.*]] = call i32 @llvm.cttz.i32(i32 [[LD5]], i1 false)
-; CHECK-NEXT:    [[CTTZ6:%.*]] = call i32 @llvm.cttz.i32(i32 [[LD6]], i1 false)
-; CHECK-NEXT:    [[CTTZ7:%.*]] = call i32 @llvm.cttz.i32(i32 [[LD7]], i1 false)
-; CHECK-NEXT:    store i32 [[CTTZ0]], i32* getelementptr inbounds ([8 x i32], [8 x i32]* @dst32, i32 0, i64 0), align 2
-; CHECK-NEXT:    store i32 [[CTTZ1]], i32* getelementptr inbounds ([8 x i32], [8 x i32]* @dst32, i32 0, i64 1), align 2
-; CHECK-NEXT:    store i32 [[CTTZ2]], i32* getelementptr inbounds ([8 x i32], [8 x i32]* @dst32, i32 0, i64 2), align 2
-; CHECK-NEXT:    store i32 [[CTTZ3]], i32* getelementptr inbounds ([8 x i32], [8 x i32]* @dst32, i32 0, i64 3), align 2
-; CHECK-NEXT:    store i32 [[CTTZ4]], i32* getelementptr inbounds ([8 x i32], [8 x i32]* @dst32, i32 0, i64 4), align 2
-; CHECK-NEXT:    store i32 [[CTTZ5]], i32* getelementptr inbounds ([8 x i32], [8 x i32]* @dst32, i32 0, i64 5), align 2
-; CHECK-NEXT:    store i32 [[CTTZ6]], i32* getelementptr inbounds ([8 x i32], [8 x i32]* @dst32, i32 0, i64 6), align 2
-; CHECK-NEXT:    store i32 [[CTTZ7]], i32* getelementptr inbounds ([8 x i32], [8 x i32]* @dst32, i32 0, i64 7), align 2
-; CHECK-NEXT:    ret void
+; SSE-LABEL: @cttz_8i32(
+; SSE-NEXT:    [[LD0:%.*]] = load i32, i32* getelementptr inbounds ([8 x i32], [8 x i32]* @src32, i32 0, i64 0), align 2
+; SSE-NEXT:    [[LD1:%.*]] = load i32, i32* getelementptr inbounds ([8 x i32], [8 x i32]* @src32, i32 0, i64 1), align 2
+; SSE-NEXT:    [[LD2:%.*]] = load i32, i32* getelementptr inbounds ([8 x i32], [8 x i32]* @src32, i32 0, i64 2), align 2
+; SSE-NEXT:    [[LD3:%.*]] = load i32, i32* getelementptr inbounds ([8 x i32], [8 x i32]* @src32, i32 0, i64 3), align 2
+; SSE-NEXT:    [[LD4:%.*]] = load i32, i32* getelementptr inbounds ([8 x i32], [8 x i32]* @src32, i32 0, i64 4), align 2
+; SSE-NEXT:    [[LD5:%.*]] = load i32, i32* getelementptr inbounds ([8 x i32], [8 x i32]* @src32, i32 0, i64 5), align 2
+; SSE-NEXT:    [[LD6:%.*]] = load i32, i32* getelementptr inbounds ([8 x i32], [8 x i32]* @src32, i32 0, i64 6), align 2
+; SSE-NEXT:    [[LD7:%.*]] = load i32, i32* getelementptr inbounds ([8 x i32], [8 x i32]* @src32, i32 0, i64 7), align 2
+; SSE-NEXT:    [[CTTZ0:%.*]] = call i32 @llvm.cttz.i32(i32 [[LD0]], i1 false)
+; SSE-NEXT:    [[CTTZ1:%.*]] = call i32 @llvm.cttz.i32(i32 [[LD1]], i1 false)
+; SSE-NEXT:    [[CTTZ2:%.*]] = call i32 @llvm.cttz.i32(i32 [[LD2]], i1 false)
+; SSE-NEXT:    [[CTTZ3:%.*]] = call i32 @llvm.cttz.i32(i32 [[LD3]], i1 false)
+; SSE-NEXT:    [[CTTZ4:%.*]] = call i32 @llvm.cttz.i32(i32 [[LD4]], i1 false)
+; SSE-NEXT:    [[CTTZ5:%.*]] = call i32 @llvm.cttz.i32(i32 [[LD5]], i1 false)
+; SSE-NEXT:    [[CTTZ6:%.*]] = call i32 @llvm.cttz.i32(i32 [[LD6]], i1 false)
+; SSE-NEXT:    [[CTTZ7:%.*]] = call i32 @llvm.cttz.i32(i32 [[LD7]], i1 false)
+; SSE-NEXT:    store i32 [[CTTZ0]], i32* getelementptr inbounds ([8 x i32], [8 x i32]* @dst32, i32 0, i64 0), align 2
+; SSE-NEXT:    store i32 [[CTTZ1]], i32* getelementptr inbounds ([8 x i32], [8 x i32]* @dst32, i32 0, i64 1), align 2
+; SSE-NEXT:    store i32 [[CTTZ2]], i32* getelementptr inbounds ([8 x i32], [8 x i32]* @dst32, i32 0, i64 2), align 2
+; SSE-NEXT:    store i32 [[CTTZ3]], i32* getelementptr inbounds ([8 x i32], [8 x i32]* @dst32, i32 0, i64 3), align 2
+; SSE-NEXT:    store i32 [[CTTZ4]], i32* getelementptr inbounds ([8 x i32], [8 x i32]* @dst32, i32 0, i64 4), align 2
+; SSE-NEXT:    store i32 [[CTTZ5]], i32* getelementptr inbounds ([8 x i32], [8 x i32]* @dst32, i32 0, i64 5), align 2
+; SSE-NEXT:    store i32 [[CTTZ6]], i32* getelementptr inbounds ([8 x i32], [8 x i32]* @dst32, i32 0, i64 6), align 2
+; SSE-NEXT:    store i32 [[CTTZ7]], i32* getelementptr inbounds ([8 x i32], [8 x i32]* @dst32, i32 0, i64 7), align 2
+; SSE-NEXT:    ret void
+;
+; AVX1-LABEL: @cttz_8i32(
+; AVX1-NEXT:    [[LD0:%.*]] = load i32, i32* getelementptr inbounds ([8 x i32], [8 x i32]* @src32, i32 0, i64 0), align 2
+; AVX1-NEXT:    [[LD1:%.*]] = load i32, i32* getelementptr inbounds ([8 x i32], [8 x i32]* @src32, i32 0, i64 1), align 2
+; AVX1-NEXT:    [[LD2:%.*]] = load i32, i32* getelementptr inbounds ([8 x i32], [8 x i32]* @src32, i32 0, i64 2), align 2
+; AVX1-NEXT:    [[LD3:%.*]] = load i32, i32* getelementptr inbounds ([8 x i32], [8 x i32]* @src32, i32 0, i64 3), align 2
+; AVX1-NEXT:    [[LD4:%.*]] = load i32, i32* getelementptr inbounds ([8 x i32], [8 x i32]* @src32, i32 0, i64 4), align 2
+; AVX1-NEXT:    [[LD5:%.*]] = load i32, i32* getelementptr inbounds ([8 x i32], [8 x i32]* @src32, i32 0, i64 5), align 2
+; AVX1-NEXT:    [[LD6:%.*]] = load i32, i32* getelementptr inbounds ([8 x i32], [8 x i32]* @src32, i32 0, i64 6), align 2
+; AVX1-NEXT:    [[LD7:%.*]] = load i32, i32* getelementptr inbounds ([8 x i32], [8 x i32]* @src32, i32 0, i64 7), align 2
+; AVX1-NEXT:    [[CTTZ0:%.*]] = call i32 @llvm.cttz.i32(i32 [[LD0]], i1 false)
+; AVX1-NEXT:    [[CTTZ1:%.*]] = call i32 @llvm.cttz.i32(i32 [[LD1]], i1 false)
+; AVX1-NEXT:    [[CTTZ2:%.*]] = call i32 @llvm.cttz.i32(i32 [[LD2]], i1 false)
+; AVX1-NEXT:    [[CTTZ3:%.*]] = call i32 @llvm.cttz.i32(i32 [[LD3]], i1 false)
+; AVX1-NEXT:    [[CTTZ4:%.*]] = call i32 @llvm.cttz.i32(i32 [[LD4]], i1 false)
+; AVX1-NEXT:    [[CTTZ5:%.*]] = call i32 @llvm.cttz.i32(i32 [[LD5]], i1 false)
+; AVX1-NEXT:    [[CTTZ6:%.*]] = call i32 @llvm.cttz.i32(i32 [[LD6]], i1 false)
+; AVX1-NEXT:    [[CTTZ7:%.*]] = call i32 @llvm.cttz.i32(i32 [[LD7]], i1 false)
+; AVX1-NEXT:    store i32 [[CTTZ0]], i32* getelementptr inbounds ([8 x i32], [8 x i32]* @dst32, i32 0, i64 0), align 2
+; AVX1-NEXT:    store i32 [[CTTZ1]], i32* getelementptr inbounds ([8 x i32], [8 x i32]* @dst32, i32 0, i64 1), align 2
+; AVX1-NEXT:    store i32 [[CTTZ2]], i32* getelementptr inbounds ([8 x i32], [8 x i32]* @dst32, i32 0, i64 2), align 2
+; AVX1-NEXT:    store i32 [[CTTZ3]], i32* getelementptr inbounds ([8 x i32], [8 x i32]* @dst32, i32 0, i64 3), align 2
+; AVX1-NEXT:    store i32 [[CTTZ4]], i32* getelementptr inbounds ([8 x i32], [8 x i32]* @dst32, i32 0, i64 4), align 2
+; AVX1-NEXT:    store i32 [[CTTZ5]], i32* getelementptr inbounds ([8 x i32], [8 x i32]* @dst32, i32 0, i64 5), align 2
+; AVX1-NEXT:    store i32 [[CTTZ6]], i32* getelementptr inbounds ([8 x i32], [8 x i32]* @dst32, i32 0, i64 6), align 2
+; AVX1-NEXT:    store i32 [[CTTZ7]], i32* getelementptr inbounds ([8 x i32], [8 x i32]* @dst32, i32 0, i64 7), align 2
+; AVX1-NEXT:    ret void
+;
+; AVX2-LABEL: @cttz_8i32(
+; AVX2-NEXT:    [[TMP1:%.*]] = load <8 x i32>, <8 x i32>* bitcast ([8 x i32]* @src32 to <8 x i32>*), align 2
+; AVX2-NEXT:    [[TMP2:%.*]] = call <8 x i32> @llvm.cttz.v8i32(<8 x i32> [[TMP1]], i1 false)
+; AVX2-NEXT:    store <8 x i32> [[TMP2]], <8 x i32>* bitcast ([8 x i32]* @dst32 to <8 x i32>*), align 2
+; AVX2-NEXT:    ret void
 ;
   %ld0 = load i32, i32* getelementptr inbounds ([8 x i32], [8 x i32]* @src32, i32 0, i64 0), align 2
   %ld1 = load i32, i32* getelementptr inbounds ([8 x i32], [8 x i32]* @src32, i32 0, i64 1), align 2
@@ -161,30 +195,9 @@ define void @cttz_8i32() #0 {
 
 define void @cttz_8i16() #0 {
 ; CHECK-LABEL: @cttz_8i16(
-; CHECK-NEXT:    [[LD0:%.*]] = load i16, i16* getelementptr inbounds ([16 x i16], [16 x i16]* @src16, i16 0, i64 0), align 2
-; CHECK-NEXT:    [[LD1:%.*]] = load i16, i16* getelementptr inbounds ([16 x i16], [16 x i16]* @src16, i16 0, i64 1), align 2
-; CHECK-NEXT:    [[LD2:%.*]] = load i16, i16* getelementptr inbounds ([16 x i16], [16 x i16]* @src16, i16 0, i64 2), align 2
-; CHECK-NEXT:    [[LD3:%.*]] = load i16, i16* getelementptr inbounds ([16 x i16], [16 x i16]* @src16, i16 0, i64 3), align 2
-; CHECK-NEXT:    [[LD4:%.*]] = load i16, i16* getelementptr inbounds ([16 x i16], [16 x i16]* @src16, i16 0, i64 4), align 2
-; CHECK-NEXT:    [[LD5:%.*]] = load i16, i16* getelementptr inbounds ([16 x i16], [16 x i16]* @src16, i16 0, i64 5), align 2
-; CHECK-NEXT:    [[LD6:%.*]] = load i16, i16* getelementptr inbounds ([16 x i16], [16 x i16]* @src16, i16 0, i64 6), align 2
-; CHECK-NEXT:    [[LD7:%.*]] = load i16, i16* getelementptr inbounds ([16 x i16], [16 x i16]* @src16, i16 0, i64 7), align 2
-; CHECK-NEXT:    [[CTTZ0:%.*]] = call i16 @llvm.cttz.i16(i16 [[LD0]], i1 false)
-; CHECK-NEXT:    [[CTTZ1:%.*]] = call i16 @llvm.cttz.i16(i16 [[LD1]], i1 false)
-; CHECK-NEXT:    [[CTTZ2:%.*]] = call i16 @llvm.cttz.i16(i16 [[LD2]], i1 false)
-; CHECK-NEXT:    [[CTTZ3:%.*]] = call i16 @llvm.cttz.i16(i16 [[LD3]], i1 false)
-; CHECK-NEXT:    [[CTTZ4:%.*]] = call i16 @llvm.cttz.i16(i16 [[LD4]], i1 false)
-; CHECK-NEXT:    [[CTTZ5:%.*]] = call i16 @llvm.cttz.i16(i16 [[LD5]], i1 false)
-; CHECK-NEXT:    [[CTTZ6:%.*]] = call i16 @llvm.cttz.i16(i16 [[LD6]], i1 false)
-; CHECK-NEXT:    [[CTTZ7:%.*]] = call i16 @llvm.cttz.i16(i16 [[LD7]], i1 false)
-; CHECK-NEXT:    store i16 [[CTTZ0]], i16* getelementptr inbounds ([16 x i16], [16 x i16]* @dst16, i16 0, i64 0), align 2
-; CHECK-NEXT:    store i16 [[CTTZ1]], i16* getelementptr inbounds ([16 x i16], [16 x i16]* @dst16, i16 0, i64 1), align 2
-; CHECK-NEXT:    store i16 [[CTTZ2]], i16* getelementptr inbounds ([16 x i16], [16 x i16]* @dst16, i16 0, i64 2), align 2
-; CHECK-NEXT:    store i16 [[CTTZ3]], i16* getelementptr inbounds ([16 x i16], [16 x i16]* @dst16, i16 0, i64 3), align 2
-; CHECK-NEXT:    store i16 [[CTTZ4]], i16* getelementptr inbounds ([16 x i16], [16 x i16]* @dst16, i16 0, i64 4), align 2
-; CHECK-NEXT:    store i16 [[CTTZ5]], i16* getelementptr inbounds ([16 x i16], [16 x i16]* @dst16, i16 0, i64 5), align 2
-; CHECK-NEXT:    store i16 [[CTTZ6]], i16* getelementptr inbounds ([16 x i16], [16 x i16]* @dst16, i16 0, i64 6), align 2
-; CHECK-NEXT:    store i16 [[CTTZ7]], i16* getelementptr inbounds ([16 x i16], [16 x i16]* @dst16, i16 0, i64 7), align 2
+; CHECK-NEXT:    [[TMP1:%.*]] = load <8 x i16>, <8 x i16>* bitcast ([16 x i16]* @src16 to <8 x i16>*), align 2
+; CHECK-NEXT:    [[TMP2:%.*]] = call <8 x i16> @llvm.cttz.v8i16(<8 x i16> [[TMP1]], i1 false)
+; CHECK-NEXT:    store <8 x i16> [[TMP2]], <8 x i16>* bitcast ([16 x i16]* @dst16 to <8 x i16>*), align 2
 ; CHECK-NEXT:    ret void
 ;
   %ld0 = load i16, i16* getelementptr inbounds ([16 x i16], [16 x i16]* @src16, i16 0, i64 0), align 2
@@ -215,56 +228,20 @@ define void @cttz_8i16() #0 {
 }
 
 define void @cttz_16i16() #0 {
-; CHECK-LABEL: @cttz_16i16(
-; CHECK-NEXT:    [[LD0:%.*]] = load i16, i16* getelementptr inbounds ([16 x i16], [16 x i16]* @src16, i16 0, i64 0), align 2
-; CHECK-NEXT:    [[LD1:%.*]] = load i16, i16* getelementptr inbounds ([16 x i16], [16 x i16]* @src16, i16 0, i64 1), align 2
-; CHECK-NEXT:    [[LD2:%.*]] = load i16, i16* getelementptr inbounds ([16 x i16], [16 x i16]* @src16, i16 0, i64 2), align 2
-; CHECK-NEXT:    [[LD3:%.*]] = load i16, i16* getelementptr inbounds ([16 x i16], [16 x i16]* @src16, i16 0, i64 3), align 2
-; CHECK-NEXT:    [[LD4:%.*]] = load i16, i16* getelementptr inbounds ([16 x i16], [16 x i16]* @src16, i16 0, i64 4), align 2
-; CHECK-NEXT:    [[LD5:%.*]] = load i16, i16* getelementptr inbounds ([16 x i16], [16 x i16]* @src16, i16 0, i64 5), align 2
-; CHECK-NEXT:    [[LD6:%.*]] = load i16, i16* getelementptr inbounds ([16 x i16], [16 x i16]* @src16, i16 0, i64 6), align 2
-; CHECK-NEXT:    [[LD7:%.*]] = load i16, i16* getelementptr inbounds ([16 x i16], [16 x i16]* @src16, i16 0, i64 7), align 2
-; CHECK-NEXT:    [[LD8:%.*]] = load i16, i16* getelementptr inbounds ([16 x i16], [16 x i16]* @src16, i16 0, i64 8), align 2
-; CHECK-NEXT:    [[LD9:%.*]] = load i16, i16* getelementptr inbounds ([16 x i16], [16 x i16]* @src16, i16 0, i64 9), align 2
-; CHECK-NEXT:    [[LD10:%.*]] = load i16, i16* getelementptr inbounds ([16 x i16], [16 x i16]* @src16, i16 0, i64 10), align 2
-; CHECK-NEXT:    [[LD11:%.*]] = load i16, i16* getelementptr inbounds ([16 x i16], [16 x i16]* @src16, i16 0, i64 11), align 2
-; CHECK-NEXT:    [[LD12:%.*]] = load i16, i16* getelementptr inbounds ([16 x i16], [16 x i16]* @src16, i16 0, i64 12), align 2
-; CHECK-NEXT:    [[LD13:%.*]] = load i16, i16* getelementptr inbounds ([16 x i16], [16 x i16]* @src16, i16 0, i64 13), align 2
-; CHECK-NEXT:    [[LD14:%.*]] = load i16, i16* getelementptr inbounds ([16 x i16], [16 x i16]* @src16, i16 0, i64 14), align 2
-; CHECK-NEXT:    [[LD15:%.*]] = load i16, i16* getelementptr inbounds ([16 x i16], [16 x i16]* @src16, i16 0, i64 15), align 2
-; CHECK-NEXT:    [[CTTZ0:%.*]] = call i16 @llvm.cttz.i16(i16 [[LD0]], i1 false)
-; CHECK-NEXT:    [[CTTZ1:%.*]] = call i16 @llvm.cttz.i16(i16 [[LD1]], i1 false)
-; CHECK-NEXT:    [[CTTZ2:%.*]] = call i16 @llvm.cttz.i16(i16 [[LD2]], i1 false)
-; CHECK-NEXT:    [[CTTZ3:%.*]] = call i16 @llvm.cttz.i16(i16 [[LD3]], i1 false)
-; CHECK-NEXT:    [[CTTZ4:%.*]] = call i16 @llvm.cttz.i16(i16 [[LD4]], i1 false)
-; CHECK-NEXT:    [[CTTZ5:%.*]] = call i16 @llvm.cttz.i16(i16 [[LD5]], i1 false)
-; CHECK-NEXT:    [[CTTZ6:%.*]] = call i16 @llvm.cttz.i16(i16 [[LD6]], i1 false)
-; CHECK-NEXT:    [[CTTZ7:%.*]] = call i16 @llvm.cttz.i16(i16 [[LD7]], i1 false)
-; CHECK-NEXT:    [[CTTZ8:%.*]] = call i16 @llvm.cttz.i16(i16 [[LD8]], i1 false)
-; CHECK-NEXT:    [[CTTZ9:%.*]] = call i16 @llvm.cttz.i16(i16 [[LD9]], i1 false)
-; CHECK-NEXT:    [[CTTZ10:%.*]] = call i16 @llvm.cttz.i16(i16 [[LD10]], i1 false)
-; CHECK-NEXT:    [[CTTZ11:%.*]] = call i16 @llvm.cttz.i16(i16 [[LD11]], i1 false)
-; CHECK-NEXT:    [[CTTZ12:%.*]] = call i16 @llvm.cttz.i16(i16 [[LD12]], i1 false)
-; CHECK-NEXT:    [[CTTZ13:%.*]] = call i16 @llvm.cttz.i16(i16 [[LD13]], i1 false)
-; CHECK-NEXT:    [[CTTZ14:%.*]] = call i16 @llvm.cttz.i16(i16 [[LD14]], i1 false)
-; CHECK-NEXT:    [[CTTZ15:%.*]] = call i16 @llvm.cttz.i16(i16 [[LD15]], i1 false)
-; CHECK-NEXT:    store i16 [[CTTZ0]], i16* getelementptr inbounds ([16 x i16], [16 x i16]* @dst16, i16 0, i64 0), align 2
-; CHECK-NEXT:    store i16 [[CTTZ1]], i16* getelementptr inbounds ([16 x i16], [16 x i16]* @dst16, i16 0, i64 1), align 2
-; CHECK-NEXT:    store i16 [[CTTZ2]], i16* getelementptr inbounds ([16 x i16], [16 x i16]* @dst16, i16 0, i64 2), align 2
-; CHECK-NEXT:    store i16 [[CTTZ3]], i16* getelementptr inbounds ([16 x i16], [16 x i16]* @dst16, i16 0, i64 3), align 2
-; CHECK-NEXT:    store i16 [[CTTZ4]], i16* getelementptr inbounds ([16 x i16], [16 x i16]* @dst16, i16 0, i64 4), align 2
-; CHECK-NEXT:    store i16 [[CTTZ5]], i16* getelementptr inbounds ([16 x i16], [16 x i16]* @dst16, i16 0, i64 5), align 2
-; CHECK-NEXT:    store i16 [[CTTZ6]], i16* getelementptr inbounds ([16 x i16], [16 x i16]* @dst16, i16 0, i64 6), align 2
-; CHECK-NEXT:    store i16 [[CTTZ7]], i16* getelementptr inbounds ([16 x i16], [16 x i16]* @dst16, i16 0, i64 7), align 2
-; CHECK-NEXT:    store i16 [[CTTZ8]], i16* getelementptr inbounds ([16 x i16], [16 x i16]* @dst16, i16 0, i64 8), align 2
-; CHECK-NEXT:    store i16 [[CTTZ9]], i16* getelementptr inbounds ([16 x i16], [16 x i16]* @dst16, i16 0, i64 9), align 2
-; CHECK-NEXT:    store i16 [[CTTZ10]], i16* getelementptr inbounds ([16 x i16], [16 x i16]* @dst16, i16 0, i64 10), align 2
-; CHECK-NEXT:    store i16 [[CTTZ11]], i16* getelementptr inbounds ([16 x i16], [16 x i16]* @dst16, i16 0, i64 11), align 2
-; CHECK-NEXT:    store i16 [[CTTZ12]], i16* getelementptr inbounds ([16 x i16], [16 x i16]* @dst16, i16 0, i64 12), align 2
-; CHECK-NEXT:    store i16 [[CTTZ13]], i16* getelementptr inbounds ([16 x i16], [16 x i16]* @dst16, i16 0, i64 13), align 2
-; CHECK-NEXT:    store i16 [[CTTZ14]], i16* getelementptr inbounds ([16 x i16], [16 x i16]* @dst16, i16 0, i64 14), align 2
-; CHECK-NEXT:    store i16 [[CTTZ15]], i16* getelementptr inbounds ([16 x i16], [16 x i16]* @dst16, i16 0, i64 15), align 2
-; CHECK-NEXT:    ret void
+; SSE-LABEL: @cttz_16i16(
+; SSE-NEXT:    [[TMP1:%.*]] = load <8 x i16>, <8 x i16>* bitcast ([16 x i16]* @src16 to <8 x i16>*), align 2
+; SSE-NEXT:    [[TMP2:%.*]] = load <8 x i16>, <8 x i16>* bitcast (i16* getelementptr inbounds ([16 x i16], [16 x i16]* @src16, i16 0, i64 8) to <8 x i16>*), align 2
+; SSE-NEXT:    [[TMP3:%.*]] = call <8 x i16> @llvm.cttz.v8i16(<8 x i16> [[TMP1]], i1 false)
+; SSE-NEXT:    [[TMP4:%.*]] = call <8 x i16> @llvm.cttz.v8i16(<8 x i16> [[TMP2]], i1 false)
+; SSE-NEXT:    store <8 x i16> [[TMP3]], <8 x i16>* bitcast ([16 x i16]* @dst16 to <8 x i16>*), align 2
+; SSE-NEXT:    store <8 x i16> [[TMP4]], <8 x i16>* bitcast (i16* getelementptr inbounds ([16 x i16], [16 x i16]* @dst16, i16 0, i64 8) to <8 x i16>*), align 2
+; SSE-NEXT:    ret void
+;
+; AVX-LABEL: @cttz_16i16(
+; AVX-NEXT:    [[TMP1:%.*]] = load <16 x i16>, <16 x i16>* bitcast ([16 x i16]* @src16 to <16 x i16>*), align 2
+; AVX-NEXT:    [[TMP2:%.*]] = call <16 x i16> @llvm.cttz.v16i16(<16 x i16> [[TMP1]], i1 false)
+; AVX-NEXT:    store <16 x i16> [[TMP2]], <16 x i16>* bitcast ([16 x i16]* @dst16 to <16 x i16>*), align 2
+; AVX-NEXT:    ret void
 ;
   %ld0  = load i16, i16* getelementptr inbounds ([16 x i16], [16 x i16]* @src16, i16 0, i64  0), align 2
   %ld1  = load i16, i16* getelementptr inbounds ([16 x i16], [16 x i16]* @src16, i16 0, i64  1), align 2
@@ -319,54 +296,9 @@ define void @cttz_16i16() #0 {
 
 define void @cttz_16i8() #0 {
 ; CHECK-LABEL: @cttz_16i8(
-; CHECK-NEXT:    [[LD0:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 0), align 1
-; CHECK-NEXT:    [[LD1:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 1), align 1
-; CHECK-NEXT:    [[LD2:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 2), align 1
-; CHECK-NEXT:    [[LD3:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 3), align 1
-; CHECK-NEXT:    [[LD4:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 4), align 1
-; CHECK-NEXT:    [[LD5:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 5), align 1
-; CHECK-NEXT:    [[LD6:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 6), align 1
-; CHECK-NEXT:    [[LD7:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 7), align 1
-; CHECK-NEXT:    [[LD8:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 8), align 1
-; CHECK-NEXT:    [[LD9:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 9), align 1
-; CHECK-NEXT:    [[LD10:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 10), align 1
-; CHECK-NEXT:    [[LD11:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 11), align 1
-; CHECK-NEXT:    [[LD12:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 12), align 1
-; CHECK-NEXT:    [[LD13:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 13), align 1
-; CHECK-NEXT:    [[LD14:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 14), align 1
-; CHECK-NEXT:    [[LD15:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 15), align 1
-; CHECK-NEXT:    [[CTTZ0:%.*]] = call i8 @llvm.cttz.i8(i8 [[LD0]], i1 false)
-; CHECK-NEXT:    [[CTTZ1:%.*]] = call i8 @llvm.cttz.i8(i8 [[LD1]], i1 false)
-; CHECK-NEXT:    [[CTTZ2:%.*]] = call i8 @llvm.cttz.i8(i8 [[LD2]], i1 false)
-; CHECK-NEXT:    [[CTTZ3:%.*]] = call i8 @llvm.cttz.i8(i8 [[LD3]], i1 false)
-; CHECK-NEXT:    [[CTTZ4:%.*]] = call i8 @llvm.cttz.i8(i8 [[LD4]], i1 false)
-; CHECK-NEXT:    [[CTTZ5:%.*]] = call i8 @llvm.cttz.i8(i8 [[LD5]], i1 false)
-; CHECK-NEXT:    [[CTTZ6:%.*]] = call i8 @llvm.cttz.i8(i8 [[LD6]], i1 false)
-; CHECK-NEXT:    [[CTTZ7:%.*]] = call i8 @llvm.cttz.i8(i8 [[LD7]], i1 false)
-; CHECK-NEXT:    [[CTTZ8:%.*]] = call i8 @llvm.cttz.i8(i8 [[LD8]], i1 false)
-; CHECK-NEXT:    [[CTTZ9:%.*]] = call i8 @llvm.cttz.i8(i8 [[LD9]], i1 false)
-; CHECK-NEXT:    [[CTTZ10:%.*]] = call i8 @llvm.cttz.i8(i8 [[LD10]], i1 false)
-; CHECK-NEXT:    [[CTTZ11:%.*]] = call i8 @llvm.cttz.i8(i8 [[LD11]], i1 false)
-; CHECK-NEXT:    [[CTTZ12:%.*]] = call i8 @llvm.cttz.i8(i8 [[LD12]], i1 false)
-; CHECK-NEXT:    [[CTTZ13:%.*]] = call i8 @llvm.cttz.i8(i8 [[LD13]], i1 false)
-; CHECK-NEXT:    [[CTTZ14:%.*]] = call i8 @llvm.cttz.i8(i8 [[LD14]], i1 false)
-; CHECK-NEXT:    [[CTTZ15:%.*]] = call i8 @llvm.cttz.i8(i8 [[LD15]], i1 false)
-; CHECK-NEXT:    store i8 [[CTTZ0]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 0), align 1
-; CHECK-NEXT:    store i8 [[CTTZ1]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 1), align 1
-; CHECK-NEXT:    store i8 [[CTTZ2]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 2), align 1
-; CHECK-NEXT:    store i8 [[CTTZ3]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 3), align 1
-; CHECK-NEXT:    store i8 [[CTTZ4]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 4), align 1
-; CHECK-NEXT:    store i8 [[CTTZ5]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 5), align 1
-; CHECK-NEXT:    store i8 [[CTTZ6]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 6), align 1
-; CHECK-NEXT:    store i8 [[CTTZ7]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 7), align 1
-; CHECK-NEXT:    store i8 [[CTTZ8]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 8), align 1
-; CHECK-NEXT:    store i8 [[CTTZ9]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 9), align 1
-; CHECK-NEXT:    store i8 [[CTTZ10]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 10), align 1
-; CHECK-NEXT:    store i8 [[CTTZ11]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 11), align 1
-; CHECK-NEXT:    store i8 [[CTTZ12]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 12), align 1
-; CHECK-NEXT:    store i8 [[CTTZ13]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 13), align 1
-; CHECK-NEXT:    store i8 [[CTTZ14]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 14), align 1
-; CHECK-NEXT:    store i8 [[CTTZ15]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 15), align 1
+; CHECK-NEXT:    [[TMP1:%.*]] = load <16 x i8>, <16 x i8>* bitcast ([32 x i8]* @src8 to <16 x i8>*), align 1
+; CHECK-NEXT:    [[TMP2:%.*]] = call <16 x i8> @llvm.cttz.v16i8(<16 x i8> [[TMP1]], i1 false)
+; CHECK-NEXT:    store <16 x i8> [[TMP2]], <16 x i8>* bitcast ([32 x i8]* @dst8 to <16 x i8>*), align 1
 ; CHECK-NEXT:    ret void
 ;
   %ld0  = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64  0), align 1
@@ -422,102 +354,12 @@ define void @cttz_16i8() #0 {
 
 define void @cttz_32i8() #0 {
 ; CHECK-LABEL: @cttz_32i8(
-; CHECK-NEXT:    [[LD0:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 0), align 1
-; CHECK-NEXT:    [[LD1:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 1), align 1
-; CHECK-NEXT:    [[LD2:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 2), align 1
-; CHECK-NEXT:    [[LD3:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 3), align 1
-; CHECK-NEXT:    [[LD4:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 4), align 1
-; CHECK-NEXT:    [[LD5:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 5), align 1
-; CHECK-NEXT:    [[LD6:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 6), align 1
-; CHECK-NEXT:    [[LD7:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 7), align 1
-; CHECK-NEXT:    [[LD8:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 8), align 1
-; CHECK-NEXT:    [[LD9:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 9), align 1
-; CHECK-NEXT:    [[LD10:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 10), align 1
-; CHECK-NEXT:    [[LD11:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 11), align 1
-; CHECK-NEXT:    [[LD12:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 12), align 1
-; CHECK-NEXT:    [[LD13:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 13), align 1
-; CHECK-NEXT:    [[LD14:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 14), align 1
-; CHECK-NEXT:    [[LD15:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 15), align 1
-; CHECK-NEXT:    [[LD16:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 16), align 1
-; CHECK-NEXT:    [[LD17:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 17), align 1
-; CHECK-NEXT:    [[LD18:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 18), align 1
-; CHECK-NEXT:    [[LD19:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 19), align 1
-; CHECK-NEXT:    [[LD20:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 20), align 1
-; CHECK-NEXT:    [[LD21:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 21), align 1
-; CHECK-NEXT:    [[LD22:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 22), align 1
-; CHECK-NEXT:    [[LD23:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 23), align 1
-; CHECK-NEXT:    [[LD24:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 24), align 1
-; CHECK-NEXT:    [[LD25:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 25), align 1
-; CHECK-NEXT:    [[LD26:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 26), align 1
-; CHECK-NEXT:    [[LD27:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 27), align 1
-; CHECK-NEXT:    [[LD28:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 28), align 1
-; CHECK-NEXT:    [[LD29:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 29), align 1
-; CHECK-NEXT:    [[LD30:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 30), align 1
-; CHECK-NEXT:    [[LD31:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 31), align 1
-; CHECK-NEXT:    [[CTTZ0:%.*]] = call i8 @llvm.cttz.i8(i8 [[LD0]], i1 false)
-; CHECK-NEXT:    [[CTTZ1:%.*]] = call i8 @llvm.cttz.i8(i8 [[LD1]], i1 false)
-; CHECK-NEXT:    [[CTTZ2:%.*]] = call i8 @llvm.cttz.i8(i8 [[LD2]], i1 false)
-; CHECK-NEXT:    [[CTTZ3:%.*]] = call i8 @llvm.cttz.i8(i8 [[LD3]], i1 false)
-; CHECK-NEXT:    [[CTTZ4:%.*]] = call i8 @llvm.cttz.i8(i8 [[LD4]], i1 false)
-; CHECK-NEXT:    [[CTTZ5:%.*]] = call i8 @llvm.cttz.i8(i8 [[LD5]], i1 false)
-; CHECK-NEXT:    [[CTTZ6:%.*]] = call i8 @llvm.cttz.i8(i8 [[LD6]], i1 false)
-; CHECK-NEXT:    [[CTTZ7:%.*]] = call i8 @llvm.cttz.i8(i8 [[LD7]], i1 false)
-; CHECK-NEXT:    [[CTTZ8:%.*]] = call i8 @llvm.cttz.i8(i8 [[LD8]], i1 false)
-; CHECK-NEXT:    [[CTTZ9:%.*]] = call i8 @llvm.cttz.i8(i8 [[LD9]], i1 false)
-; CHECK-NEXT:    [[CTTZ10:%.*]] = call i8 @llvm.cttz.i8(i8 [[LD10]], i1 false)
-; CHECK-NEXT:    [[CTTZ11:%.*]] = call i8 @llvm.cttz.i8(i8 [[LD11]], i1 false)
-; CHECK-NEXT:    [[CTTZ12:%.*]] = call i8 @llvm.cttz.i8(i8 [[LD12]], i1 false)
-; CHECK-NEXT:    [[CTTZ13:%.*]] = call i8 @llvm.cttz.i8(i8 [[LD13]], i1 false)
-; CHECK-NEXT:    [[CTTZ14:%.*]] = call i8 @llvm.cttz.i8(i8 [[LD14]], i1 false)
-; CHECK-NEXT:    [[CTTZ15:%.*]] = call i8 @llvm.cttz.i8(i8 [[LD15]], i1 false)
-; CHECK-NEXT:    [[CTTZ16:%.*]] = call i8 @llvm.cttz.i8(i8 [[LD16]], i1 false)
-; CHECK-NEXT:    [[CTTZ17:%.*]] = call i8 @llvm.cttz.i8(i8 [[LD17]], i1 false)
-; CHECK-NEXT:    [[CTTZ18:%.*]] = call i8 @llvm.cttz.i8(i8 [[LD18]], i1 false)
-; CHECK-NEXT:    [[CTTZ19:%.*]] = call i8 @llvm.cttz.i8(i8 [[LD19]], i1 false)
-; CHECK-NEXT:    [[CTTZ20:%.*]] = call i8 @llvm.cttz.i8(i8 [[LD20]], i1 false)
-; CHECK-NEXT:    [[CTTZ21:%.*]] = call i8 @llvm.cttz.i8(i8 [[LD21]], i1 false)
-; CHECK-NEXT:    [[CTTZ22:%.*]] = call i8 @llvm.cttz.i8(i8 [[LD22]], i1 false)
-; CHECK-NEXT:    [[CTTZ23:%.*]] = call i8 @llvm.cttz.i8(i8 [[LD23]], i1 false)
-; CHECK-NEXT:    [[CTTZ24:%.*]] = call i8 @llvm.cttz.i8(i8 [[LD24]], i1 false)
-; CHECK-NEXT:    [[CTTZ25:%.*]] = call i8 @llvm.cttz.i8(i8 [[LD25]], i1 false)
-; CHECK-NEXT:    [[CTTZ26:%.*]] = call i8 @llvm.cttz.i8(i8 [[LD26]], i1 false)
-; CHECK-NEXT:    [[CTTZ27:%.*]] = call i8 @llvm.cttz.i8(i8 [[LD27]], i1 false)
-; CHECK-NEXT:    [[CTTZ28:%.*]] = call i8 @llvm.cttz.i8(i8 [[LD28]], i1 false)
-; CHECK-NEXT:    [[CTTZ29:%.*]] = call i8 @llvm.cttz.i8(i8 [[LD29]], i1 false)
-; CHECK-NEXT:    [[CTTZ30:%.*]] = call i8 @llvm.cttz.i8(i8 [[LD30]], i1 false)
-; CHECK-NEXT:    [[CTTZ31:%.*]] = call i8 @llvm.cttz.i8(i8 [[LD31]], i1 false)
-; CHECK-NEXT:    store i8 [[CTTZ0]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 0), align 1
-; CHECK-NEXT:    store i8 [[CTTZ1]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 1), align 1
-; CHECK-NEXT:    store i8 [[CTTZ2]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 2), align 1
-; CHECK-NEXT:    store i8 [[CTTZ3]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 3), align 1
-; CHECK-NEXT:    store i8 [[CTTZ4]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 4), align 1
-; CHECK-NEXT:    store i8 [[CTTZ5]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 5), align 1
-; CHECK-NEXT:    store i8 [[CTTZ6]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 6), align 1
-; CHECK-NEXT:    store i8 [[CTTZ7]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 7), align 1
-; CHECK-NEXT:    store i8 [[CTTZ8]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 8), align 1
-; CHECK-NEXT:    store i8 [[CTTZ9]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 9), align 1
-; CHECK-NEXT:    store i8 [[CTTZ10]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 10), align 1
-; CHECK-NEXT:    store i8 [[CTTZ11]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 11), align 1
-; CHECK-NEXT:    store i8 [[CTTZ12]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 12), align 1
-; CHECK-NEXT:    store i8 [[CTTZ13]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 13), align 1
-; CHECK-NEXT:    store i8 [[CTTZ14]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 14), align 1
-; CHECK-NEXT:    store i8 [[CTTZ15]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 15), align 1
-; CHECK-NEXT:    store i8 [[CTTZ16]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 16), align 1
-; CHECK-NEXT:    store i8 [[CTTZ17]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 17), align 1
-; CHECK-NEXT:    store i8 [[CTTZ18]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 18), align 1
-; CHECK-NEXT:    store i8 [[CTTZ19]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 19), align 1
-; CHECK-NEXT:    store i8 [[CTTZ20]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 20), align 1
-; CHECK-NEXT:    store i8 [[CTTZ21]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 21), align 1
-; CHECK-NEXT:    store i8 [[CTTZ22]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 22), align 1
-; CHECK-NEXT:    store i8 [[CTTZ23]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 23), align 1
-; CHECK-NEXT:    store i8 [[CTTZ24]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 24), align 1
-; CHECK-NEXT:    store i8 [[CTTZ25]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 25), align 1
-; CHECK-NEXT:    store i8 [[CTTZ26]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 26), align 1
-; CHECK-NEXT:    store i8 [[CTTZ27]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 27), align 1
-; CHECK-NEXT:    store i8 [[CTTZ28]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 28), align 1
-; CHECK-NEXT:    store i8 [[CTTZ29]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 29), align 1
-; CHECK-NEXT:    store i8 [[CTTZ30]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 30), align 1
-; CHECK-NEXT:    store i8 [[CTTZ31]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 31), align 1
+; CHECK-NEXT:    [[TMP1:%.*]] = load <16 x i8>, <16 x i8>* bitcast ([32 x i8]* @src8 to <16 x i8>*), align 1
+; CHECK-NEXT:    [[TMP2:%.*]] = load <16 x i8>, <16 x i8>* bitcast (i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 16) to <16 x i8>*), align 1
+; CHECK-NEXT:    [[TMP3:%.*]] = call <16 x i8> @llvm.cttz.v16i8(<16 x i8> [[TMP1]], i1 false)
+; CHECK-NEXT:    [[TMP4:%.*]] = call <16 x i8> @llvm.cttz.v16i8(<16 x i8> [[TMP2]], i1 false)
+; CHECK-NEXT:    store <16 x i8> [[TMP3]], <16 x i8>* bitcast ([32 x i8]* @dst8 to <16 x i8>*), align 1
+; CHECK-NEXT:    store <16 x i8> [[TMP4]], <16 x i8>* bitcast (i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 16) to <16 x i8>*), align 1
 ; CHECK-NEXT:    ret void
 ;
   %ld0  = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64  0), align 1
@@ -705,32 +547,65 @@ define void @cttz_undef_4i32() #0 {
 }
 
 define void @cttz_undef_8i32() #0 {
-; CHECK-LABEL: @cttz_undef_8i32(
-; CHECK-NEXT:    [[LD0:%.*]] = load i32, i32* getelementptr inbounds ([8 x i32], [8 x i32]* @src32, i32 0, i64 0), align 2
-; CHECK-NEXT:    [[LD1:%.*]] = load i32, i32* getelementptr inbounds ([8 x i32], [8 x i32]* @src32, i32 0, i64 1), align 2
-; CHECK-NEXT:    [[LD2:%.*]] = load i32, i32* getelementptr inbounds ([8 x i32], [8 x i32]* @src32, i32 0, i64 2), align 2
-; CHECK-NEXT:    [[LD3:%.*]] = load i32, i32* getelementptr inbounds ([8 x i32], [8 x i32]* @src32, i32 0, i64 3), align 2
-; CHECK-NEXT:    [[LD4:%.*]] = load i32, i32* getelementptr inbounds ([8 x i32], [8 x i32]* @src32, i32 0, i64 4), align 2
-; CHECK-NEXT:    [[LD5:%.*]] = load i32, i32* getelementptr inbounds ([8 x i32], [8 x i32]* @src32, i32 0, i64 5), align 2
-; CHECK-NEXT:    [[LD6:%.*]] = load i32, i32* getelementptr inbounds ([8 x i32], [8 x i32]* @src32, i32 0, i64 6), align 2
-; CHECK-NEXT:    [[LD7:%.*]] = load i32, i32* getelementptr inbounds ([8 x i32], [8 x i32]* @src32, i32 0, i64 7), align 2
-; CHECK-NEXT:    [[CTTZ0:%.*]] = call i32 @llvm.cttz.i32(i32 [[LD0]], i1 true)
-; CHECK-NEXT:    [[CTTZ1:%.*]] = call i32 @llvm.cttz.i32(i32 [[LD1]], i1 true)
-; CHECK-NEXT:    [[CTTZ2:%.*]] = call i32 @llvm.cttz.i32(i32 [[LD2]], i1 true)
-; CHECK-NEXT:    [[CTTZ3:%.*]] = call i32 @llvm.cttz.i32(i32 [[LD3]], i1 true)
-; CHECK-NEXT:    [[CTTZ4:%.*]] = call i32 @llvm.cttz.i32(i32 [[LD4]], i1 true)
-; CHECK-NEXT:    [[CTTZ5:%.*]] = call i32 @llvm.cttz.i32(i32 [[LD5]], i1 true)
-; CHECK-NEXT:    [[CTTZ6:%.*]] = call i32 @llvm.cttz.i32(i32 [[LD6]], i1 true)
-; CHECK-NEXT:    [[CTTZ7:%.*]] = call i32 @llvm.cttz.i32(i32 [[LD7]], i1 true)
-; CHECK-NEXT:    store i32 [[CTTZ0]], i32* getelementptr inbounds ([8 x i32], [8 x i32]* @dst32, i32 0, i64 0), align 2
-; CHECK-NEXT:    store i32 [[CTTZ1]], i32* getelementptr inbounds ([8 x i32], [8 x i32]* @dst32, i32 0, i64 1), align 2
-; CHECK-NEXT:    store i32 [[CTTZ2]], i32* getelementptr inbounds ([8 x i32], [8 x i32]* @dst32, i32 0, i64 2), align 2
-; CHECK-NEXT:    store i32 [[CTTZ3]], i32* getelementptr inbounds ([8 x i32], [8 x i32]* @dst32, i32 0, i64 3), align 2
-; CHECK-NEXT:    store i32 [[CTTZ4]], i32* getelementptr inbounds ([8 x i32], [8 x i32]* @dst32, i32 0, i64 4), align 2
-; CHECK-NEXT:    store i32 [[CTTZ5]], i32* getelementptr inbounds ([8 x i32], [8 x i32]* @dst32, i32 0, i64 5), align 2
-; CHECK-NEXT:    store i32 [[CTTZ6]], i32* getelementptr inbounds ([8 x i32], [8 x i32]* @dst32, i32 0, i64 6), align 2
-; CHECK-NEXT:    store i32 [[CTTZ7]], i32* getelementptr inbounds ([8 x i32], [8 x i32]* @dst32, i32 0, i64 7), align 2
-; CHECK-NEXT:    ret void
+; SSE-LABEL: @cttz_undef_8i32(
+; SSE-NEXT:    [[LD0:%.*]] = load i32, i32* getelementptr inbounds ([8 x i32], [8 x i32]* @src32, i32 0, i64 0), align 2
+; SSE-NEXT:    [[LD1:%.*]] = load i32, i32* getelementptr inbounds ([8 x i32], [8 x i32]* @src32, i32 0, i64 1), align 2
+; SSE-NEXT:    [[LD2:%.*]] = load i32, i32* getelementptr inbounds ([8 x i32], [8 x i32]* @src32, i32 0, i64 2), align 2
+; SSE-NEXT:    [[LD3:%.*]] = load i32, i32* getelementptr inbounds ([8 x i32], [8 x i32]* @src32, i32 0, i64 3), align 2
+; SSE-NEXT:    [[LD4:%.*]] = load i32, i32* getelementptr inbounds ([8 x i32], [8 x i32]* @src32, i32 0, i64 4), align 2
+; SSE-NEXT:    [[LD5:%.*]] = load i32, i32* getelementptr inbounds ([8 x i32], [8 x i32]* @src32, i32 0, i64 5), align 2
+; SSE-NEXT:    [[LD6:%.*]] = load i32, i32* getelementptr inbounds ([8 x i32], [8 x i32]* @src32, i32 0, i64 6), align 2
+; SSE-NEXT:    [[LD7:%.*]] = load i32, i32* getelementptr inbounds ([8 x i32], [8 x i32]* @src32, i32 0, i64 7), align 2
+; SSE-NEXT:    [[CTTZ0:%.*]] = call i32 @llvm.cttz.i32(i32 [[LD0]], i1 true)
+; SSE-NEXT:    [[CTTZ1:%.*]] = call i32 @llvm.cttz.i32(i32 [[LD1]], i1 true)
+; SSE-NEXT:    [[CTTZ2:%.*]] = call i32 @llvm.cttz.i32(i32 [[LD2]], i1 true)
+; SSE-NEXT:    [[CTTZ3:%.*]] = call i32 @llvm.cttz.i32(i32 [[LD3]], i1 true)
+; SSE-NEXT:    [[CTTZ4:%.*]] = call i32 @llvm.cttz.i32(i32 [[LD4]], i1 true)
+; SSE-NEXT:    [[CTTZ5:%.*]] = call i32 @llvm.cttz.i32(i32 [[LD5]], i1 true)
+; SSE-NEXT:    [[CTTZ6:%.*]] = call i32 @llvm.cttz.i32(i32 [[LD6]], i1 true)
+; SSE-NEXT:    [[CTTZ7:%.*]] = call i32 @llvm.cttz.i32(i32 [[LD7]], i1 true)
+; SSE-NEXT:    store i32 [[CTTZ0]], i32* getelementptr inbounds ([8 x i32], [8 x i32]* @dst32, i32 0, i64 0), align 2
+; SSE-NEXT:    store i32 [[CTTZ1]], i32* getelementptr inbounds ([8 x i32], [8 x i32]* @dst32, i32 0, i64 1), align 2
+; SSE-NEXT:    store i32 [[CTTZ2]], i32* getelementptr inbounds ([8 x i32], [8 x i32]* @dst32, i32 0, i64 2), align 2
+; SSE-NEXT:    store i32 [[CTTZ3]], i32* getelementptr inbounds ([8 x i32], [8 x i32]* @dst32, i32 0, i64 3), align 2
+; SSE-NEXT:    store i32 [[CTTZ4]], i32* getelementptr inbounds ([8 x i32], [8 x i32]* @dst32, i32 0, i64 4), align 2
+; SSE-NEXT:    store i32 [[CTTZ5]], i32* getelementptr inbounds ([8 x i32], [8 x i32]* @dst32, i32 0, i64 5), align 2
+; SSE-NEXT:    store i32 [[CTTZ6]], i32* getelementptr inbounds ([8 x i32], [8 x i32]* @dst32, i32 0, i64 6), align 2
+; SSE-NEXT:    store i32 [[CTTZ7]], i32* getelementptr inbounds ([8 x i32], [8 x i32]* @dst32, i32 0, i64 7), align 2
+; SSE-NEXT:    ret void
+;
+; AVX1-LABEL: @cttz_undef_8i32(
+; AVX1-NEXT:    [[LD0:%.*]] = load i32, i32* getelementptr inbounds ([8 x i32], [8 x i32]* @src32, i32 0, i64 0), align 2
+; AVX1-NEXT:    [[LD1:%.*]] = load i32, i32* getelementptr inbounds ([8 x i32], [8 x i32]* @src32, i32 0, i64 1), align 2
+; AVX1-NEXT:    [[LD2:%.*]] = load i32, i32* getelementptr inbounds ([8 x i32], [8 x i32]* @src32, i32 0, i64 2), align 2
+; AVX1-NEXT:    [[LD3:%.*]] = load i32, i32* getelementptr inbounds ([8 x i32], [8 x i32]* @src32, i32 0, i64 3), align 2
+; AVX1-NEXT:    [[LD4:%.*]] = load i32, i32* getelementptr inbounds ([8 x i32], [8 x i32]* @src32, i32 0, i64 4), align 2
+; AVX1-NEXT:    [[LD5:%.*]] = load i32, i32* getelementptr inbounds ([8 x i32], [8 x i32]* @src32, i32 0, i64 5), align 2
+; AVX1-NEXT:    [[LD6:%.*]] = load i32, i32* getelementptr inbounds ([8 x i32], [8 x i32]* @src32, i32 0, i64 6), align 2
+; AVX1-NEXT:    [[LD7:%.*]] = load i32, i32* getelementptr inbounds ([8 x i32], [8 x i32]* @src32, i32 0, i64 7), align 2
+; AVX1-NEXT:    [[CTTZ0:%.*]] = call i32 @llvm.cttz.i32(i32 [[LD0]], i1 true)
+; AVX1-NEXT:    [[CTTZ1:%.*]] = call i32 @llvm.cttz.i32(i32 [[LD1]], i1 true)
+; AVX1-NEXT:    [[CTTZ2:%.*]] = call i32 @llvm.cttz.i32(i32 [[LD2]], i1 true)
+; AVX1-NEXT:    [[CTTZ3:%.*]] = call i32 @llvm.cttz.i32(i32 [[LD3]], i1 true)
+; AVX1-NEXT:    [[CTTZ4:%.*]] = call i32 @llvm.cttz.i32(i32 [[LD4]], i1 true)
+; AVX1-NEXT:    [[CTTZ5:%.*]] = call i32 @llvm.cttz.i32(i32 [[LD5]], i1 true)
+; AVX1-NEXT:    [[CTTZ6:%.*]] = call i32 @llvm.cttz.i32(i32 [[LD6]], i1 true)
+; AVX1-NEXT:    [[CTTZ7:%.*]] = call i32 @llvm.cttz.i32(i32 [[LD7]], i1 true)
+; AVX1-NEXT:    store i32 [[CTTZ0]], i32* getelementptr inbounds ([8 x i32], [8 x i32]* @dst32, i32 0, i64 0), align 2
+; AVX1-NEXT:    store i32 [[CTTZ1]], i32* getelementptr inbounds ([8 x i32], [8 x i32]* @dst32, i32 0, i64 1), align 2
+; AVX1-NEXT:    store i32 [[CTTZ2]], i32* getelementptr inbounds ([8 x i32], [8 x i32]* @dst32, i32 0, i64 2), align 2
+; AVX1-NEXT:    store i32 [[CTTZ3]], i32* getelementptr inbounds ([8 x i32], [8 x i32]* @dst32, i32 0, i64 3), align 2
+; AVX1-NEXT:    store i32 [[CTTZ4]], i32* getelementptr inbounds ([8 x i32], [8 x i32]* @dst32, i32 0, i64 4), align 2
+; AVX1-NEXT:    store i32 [[CTTZ5]], i32* getelementptr inbounds ([8 x i32], [8 x i32]* @dst32, i32 0, i64 5), align 2
+; AVX1-NEXT:    store i32 [[CTTZ6]], i32* getelementptr inbounds ([8 x i32], [8 x i32]* @dst32, i32 0, i64 6), align 2
+; AVX1-NEXT:    store i32 [[CTTZ7]], i32* getelementptr inbounds ([8 x i32], [8 x i32]* @dst32, i32 0, i64 7), align 2
+; AVX1-NEXT:    ret void
+;
+; AVX2-LABEL: @cttz_undef_8i32(
+; AVX2-NEXT:    [[TMP1:%.*]] = load <8 x i32>, <8 x i32>* bitcast ([8 x i32]* @src32 to <8 x i32>*), align 2
+; AVX2-NEXT:    [[TMP2:%.*]] = call <8 x i32> @llvm.cttz.v8i32(<8 x i32> [[TMP1]], i1 true)
+; AVX2-NEXT:    store <8 x i32> [[TMP2]], <8 x i32>* bitcast ([8 x i32]* @dst32 to <8 x i32>*), align 2
+; AVX2-NEXT:    ret void
 ;
   %ld0 = load i32, i32* getelementptr inbounds ([8 x i32], [8 x i32]* @src32, i32 0, i64 0), align 2
   %ld1 = load i32, i32* getelementptr inbounds ([8 x i32], [8 x i32]* @src32, i32 0, i64 1), align 2
@@ -761,30 +636,9 @@ define void @cttz_undef_8i32() #0 {
 
 define void @cttz_undef_8i16() #0 {
 ; CHECK-LABEL: @cttz_undef_8i16(
-; CHECK-NEXT:    [[LD0:%.*]] = load i16, i16* getelementptr inbounds ([16 x i16], [16 x i16]* @src16, i16 0, i64 0), align 2
-; CHECK-NEXT:    [[LD1:%.*]] = load i16, i16* getelementptr inbounds ([16 x i16], [16 x i16]* @src16, i16 0, i64 1), align 2
-; CHECK-NEXT:    [[LD2:%.*]] = load i16, i16* getelementptr inbounds ([16 x i16], [16 x i16]* @src16, i16 0, i64 2), align 2
-; CHECK-NEXT:    [[LD3:%.*]] = load i16, i16* getelementptr inbounds ([16 x i16], [16 x i16]* @src16, i16 0, i64 3), align 2
-; CHECK-NEXT:    [[LD4:%.*]] = load i16, i16* getelementptr inbounds ([16 x i16], [16 x i16]* @src16, i16 0, i64 4), align 2
-; CHECK-NEXT:    [[LD5:%.*]] = load i16, i16* getelementptr inbounds ([16 x i16], [16 x i16]* @src16, i16 0, i64 5), align 2
-; CHECK-NEXT:    [[LD6:%.*]] = load i16, i16* getelementptr inbounds ([16 x i16], [16 x i16]* @src16, i16 0, i64 6), align 2
-; CHECK-NEXT:    [[LD7:%.*]] = load i16, i16* getelementptr inbounds ([16 x i16], [16 x i16]* @src16, i16 0, i64 7), align 2
-; CHECK-NEXT:    [[CTTZ0:%.*]] = call i16 @llvm.cttz.i16(i16 [[LD0]], i1 true)
-; CHECK-NEXT:    [[CTTZ1:%.*]] = call i16 @llvm.cttz.i16(i16 [[LD1]], i1 true)
-; CHECK-NEXT:    [[CTTZ2:%.*]] = call i16 @llvm.cttz.i16(i16 [[LD2]], i1 true)
-; CHECK-NEXT:    [[CTTZ3:%.*]] = call i16 @llvm.cttz.i16(i16 [[LD3]], i1 true)
-; CHECK-NEXT:    [[CTTZ4:%.*]] = call i16 @llvm.cttz.i16(i16 [[LD4]], i1 true)
-; CHECK-NEXT:    [[CTTZ5:%.*]] = call i16 @llvm.cttz.i16(i16 [[LD5]], i1 true)
-; CHECK-NEXT:    [[CTTZ6:%.*]] = call i16 @llvm.cttz.i16(i16 [[LD6]], i1 true)
-; CHECK-NEXT:    [[CTTZ7:%.*]] = call i16 @llvm.cttz.i16(i16 [[LD7]], i1 true)
-; CHECK-NEXT:    store i16 [[CTTZ0]], i16* getelementptr inbounds ([16 x i16], [16 x i16]* @dst16, i16 0, i64 0), align 2
-; CHECK-NEXT:    store i16 [[CTTZ1]], i16* getelementptr inbounds ([16 x i16], [16 x i16]* @dst16, i16 0, i64 1), align 2
-; CHECK-NEXT:    store i16 [[CTTZ2]], i16* getelementptr inbounds ([16 x i16], [16 x i16]* @dst16, i16 0, i64 2), align 2
-; CHECK-NEXT:    store i16 [[CTTZ3]], i16* getelementptr inbounds ([16 x i16], [16 x i16]* @dst16, i16 0, i64 3), align 2
-; CHECK-NEXT:    store i16 [[CTTZ4]], i16* getelementptr inbounds ([16 x i16], [16 x i16]* @dst16, i16 0, i64 4), align 2
-; CHECK-NEXT:    store i16 [[CTTZ5]], i16* getelementptr inbounds ([16 x i16], [16 x i16]* @dst16, i16 0, i64 5), align 2
-; CHECK-NEXT:    store i16 [[CTTZ6]], i16* getelementptr inbounds ([16 x i16], [16 x i16]* @dst16, i16 0, i64 6), align 2
-; CHECK-NEXT:    store i16 [[CTTZ7]], i16* getelementptr inbounds ([16 x i16], [16 x i16]* @dst16, i16 0, i64 7), align 2
+; CHECK-NEXT:    [[TMP1:%.*]] = load <8 x i16>, <8 x i16>* bitcast ([16 x i16]* @src16 to <8 x i16>*), align 2
+; CHECK-NEXT:    [[TMP2:%.*]] = call <8 x i16> @llvm.cttz.v8i16(<8 x i16> [[TMP1]], i1 true)
+; CHECK-NEXT:    store <8 x i16> [[TMP2]], <8 x i16>* bitcast ([16 x i16]* @dst16 to <8 x i16>*), align 2
 ; CHECK-NEXT:    ret void
 ;
   %ld0 = load i16, i16* getelementptr inbounds ([16 x i16], [16 x i16]* @src16, i16 0, i64 0), align 2
@@ -815,56 +669,20 @@ define void @cttz_undef_8i16() #0 {
 }
 
 define void @cttz_undef_16i16() #0 {
-; CHECK-LABEL: @cttz_undef_16i16(
-; CHECK-NEXT:    [[LD0:%.*]] = load i16, i16* getelementptr inbounds ([16 x i16], [16 x i16]* @src16, i16 0, i64 0), align 2
-; CHECK-NEXT:    [[LD1:%.*]] = load i16, i16* getelementptr inbounds ([16 x i16], [16 x i16]* @src16, i16 0, i64 1), align 2
-; CHECK-NEXT:    [[LD2:%.*]] = load i16, i16* getelementptr inbounds ([16 x i16], [16 x i16]* @src16, i16 0, i64 2), align 2
-; CHECK-NEXT:    [[LD3:%.*]] = load i16, i16* getelementptr inbounds ([16 x i16], [16 x i16]* @src16, i16 0, i64 3), align 2
-; CHECK-NEXT:    [[LD4:%.*]] = load i16, i16* getelementptr inbounds ([16 x i16], [16 x i16]* @src16, i16 0, i64 4), align 2
-; CHECK-NEXT:    [[LD5:%.*]] = load i16, i16* getelementptr inbounds ([16 x i16], [16 x i16]* @src16, i16 0, i64 5), align 2
-; CHECK-NEXT:    [[LD6:%.*]] = load i16, i16* getelementptr inbounds ([16 x i16], [16 x i16]* @src16, i16 0, i64 6), align 2
-; CHECK-NEXT:    [[LD7:%.*]] = load i16, i16* getelementptr inbounds ([16 x i16], [16 x i16]* @src16, i16 0, i64 7), align 2
-; CHECK-NEXT:    [[LD8:%.*]] = load i16, i16* getelementptr inbounds ([16 x i16], [16 x i16]* @src16, i16 0, i64 8), align 2
-; CHECK-NEXT:    [[LD9:%.*]] = load i16, i16* getelementptr inbounds ([16 x i16], [16 x i16]* @src16, i16 0, i64 9), align 2
-; CHECK-NEXT:    [[LD10:%.*]] = load i16, i16* getelementptr inbounds ([16 x i16], [16 x i16]* @src16, i16 0, i64 10), align 2
-; CHECK-NEXT:    [[LD11:%.*]] = load i16, i16* getelementptr inbounds ([16 x i16], [16 x i16]* @src16, i16 0, i64 11), align 2
-; CHECK-NEXT:    [[LD12:%.*]] = load i16, i16* getelementptr inbounds ([16 x i16], [16 x i16]* @src16, i16 0, i64 12), align 2
-; CHECK-NEXT:    [[LD13:%.*]] = load i16, i16* getelementptr inbounds ([16 x i16], [16 x i16]* @src16, i16 0, i64 13), align 2
-; CHECK-NEXT:    [[LD14:%.*]] = load i16, i16* getelementptr inbounds ([16 x i16], [16 x i16]* @src16, i16 0, i64 14), align 2
-; CHECK-NEXT:    [[LD15:%.*]] = load i16, i16* getelementptr inbounds ([16 x i16], [16 x i16]* @src16, i16 0, i64 15), align 2
-; CHECK-NEXT:    [[CTTZ0:%.*]] = call i16 @llvm.cttz.i16(i16 [[LD0]], i1 true)
-; CHECK-NEXT:    [[CTTZ1:%.*]] = call i16 @llvm.cttz.i16(i16 [[LD1]], i1 true)
-; CHECK-NEXT:    [[CTTZ2:%.*]] = call i16 @llvm.cttz.i16(i16 [[LD2]], i1 true)
-; CHECK-NEXT:    [[CTTZ3:%.*]] = call i16 @llvm.cttz.i16(i16 [[LD3]], i1 true)
-; CHECK-NEXT:    [[CTTZ4:%.*]] = call i16 @llvm.cttz.i16(i16 [[LD4]], i1 true)
-; CHECK-NEXT:    [[CTTZ5:%.*]] = call i16 @llvm.cttz.i16(i16 [[LD5]], i1 true)
-; CHECK-NEXT:    [[CTTZ6:%.*]] = call i16 @llvm.cttz.i16(i16 [[LD6]], i1 true)
-; CHECK-NEXT:    [[CTTZ7:%.*]] = call i16 @llvm.cttz.i16(i16 [[LD7]], i1 true)
-; CHECK-NEXT:    [[CTTZ8:%.*]] = call i16 @llvm.cttz.i16(i16 [[LD8]], i1 true)
-; CHECK-NEXT:    [[CTTZ9:%.*]] = call i16 @llvm.cttz.i16(i16 [[LD9]], i1 true)
-; CHECK-NEXT:    [[CTTZ10:%.*]] = call i16 @llvm.cttz.i16(i16 [[LD10]], i1 true)
-; CHECK-NEXT:    [[CTTZ11:%.*]] = call i16 @llvm.cttz.i16(i16 [[LD11]], i1 true)
-; CHECK-NEXT:    [[CTTZ12:%.*]] = call i16 @llvm.cttz.i16(i16 [[LD12]], i1 true)
-; CHECK-NEXT:    [[CTTZ13:%.*]] = call i16 @llvm.cttz.i16(i16 [[LD13]], i1 true)
-; CHECK-NEXT:    [[CTTZ14:%.*]] = call i16 @llvm.cttz.i16(i16 [[LD14]], i1 true)
-; CHECK-NEXT:    [[CTTZ15:%.*]] = call i16 @llvm.cttz.i16(i16 [[LD15]], i1 true)
-; CHECK-NEXT:    store i16 [[CTTZ0]], i16* getelementptr inbounds ([16 x i16], [16 x i16]* @dst16, i16 0, i64 0), align 2
-; CHECK-NEXT:    store i16 [[CTTZ1]], i16* getelementptr inbounds ([16 x i16], [16 x i16]* @dst16, i16 0, i64 1), align 2
-; CHECK-NEXT:    store i16 [[CTTZ2]], i16* getelementptr inbounds ([16 x i16], [16 x i16]* @dst16, i16 0, i64 2), align 2
-; CHECK-NEXT:    store i16 [[CTTZ3]], i16* getelementptr inbounds ([16 x i16], [16 x i16]* @dst16, i16 0, i64 3), align 2
-; CHECK-NEXT:    store i16 [[CTTZ4]], i16* getelementptr inbounds ([16 x i16], [16 x i16]* @dst16, i16 0, i64 4), align 2
-; CHECK-NEXT:    store i16 [[CTTZ5]], i16* getelementptr inbounds ([16 x i16], [16 x i16]* @dst16, i16 0, i64 5), align 2
-; CHECK-NEXT:    store i16 [[CTTZ6]], i16* getelementptr inbounds ([16 x i16], [16 x i16]* @dst16, i16 0, i64 6), align 2
-; CHECK-NEXT:    store i16 [[CTTZ7]], i16* getelementptr inbounds ([16 x i16], [16 x i16]* @dst16, i16 0, i64 7), align 2
-; CHECK-NEXT:    store i16 [[CTTZ8]], i16* getelementptr inbounds ([16 x i16], [16 x i16]* @dst16, i16 0, i64 8), align 2
-; CHECK-NEXT:    store i16 [[CTTZ9]], i16* getelementptr inbounds ([16 x i16], [16 x i16]* @dst16, i16 0, i64 9), align 2
-; CHECK-NEXT:    store i16 [[CTTZ10]], i16* getelementptr inbounds ([16 x i16], [16 x i16]* @dst16, i16 0, i64 10), align 2
-; CHECK-NEXT:    store i16 [[CTTZ11]], i16* getelementptr inbounds ([16 x i16], [16 x i16]* @dst16, i16 0, i64 11), align 2
-; CHECK-NEXT:    store i16 [[CTTZ12]], i16* getelementptr inbounds ([16 x i16], [16 x i16]* @dst16, i16 0, i64 12), align 2
-; CHECK-NEXT:    store i16 [[CTTZ13]], i16* getelementptr inbounds ([16 x i16], [16 x i16]* @dst16, i16 0, i64 13), align 2
-; CHECK-NEXT:    store i16 [[CTTZ14]], i16* getelementptr inbounds ([16 x i16], [16 x i16]* @dst16, i16 0, i64 14), align 2
-; CHECK-NEXT:    store i16 [[CTTZ15]], i16* getelementptr inbounds ([16 x i16], [16 x i16]* @dst16, i16 0, i64 15), align 2
-; CHECK-NEXT:    ret void
+; SSE-LABEL: @cttz_undef_16i16(
+; SSE-NEXT:    [[TMP1:%.*]] = load <8 x i16>, <8 x i16>* bitcast ([16 x i16]* @src16 to <8 x i16>*), align 2
+; SSE-NEXT:    [[TMP2:%.*]] = load <8 x i16>, <8 x i16>* bitcast (i16* getelementptr inbounds ([16 x i16], [16 x i16]* @src16, i16 0, i64 8) to <8 x i16>*), align 2
+; SSE-NEXT:    [[TMP3:%.*]] = call <8 x i16> @llvm.cttz.v8i16(<8 x i16> [[TMP1]], i1 true)
+; SSE-NEXT:    [[TMP4:%.*]] = call <8 x i16> @llvm.cttz.v8i16(<8 x i16> [[TMP2]], i1 true)
+; SSE-NEXT:    store <8 x i16> [[TMP3]], <8 x i16>* bitcast ([16 x i16]* @dst16 to <8 x i16>*), align 2
+; SSE-NEXT:    store <8 x i16> [[TMP4]], <8 x i16>* bitcast (i16* getelementptr inbounds ([16 x i16], [16 x i16]* @dst16, i16 0, i64 8) to <8 x i16>*), align 2
+; SSE-NEXT:    ret void
+;
+; AVX-LABEL: @cttz_undef_16i16(
+; AVX-NEXT:    [[TMP1:%.*]] = load <16 x i16>, <16 x i16>* bitcast ([16 x i16]* @src16 to <16 x i16>*), align 2
+; AVX-NEXT:    [[TMP2:%.*]] = call <16 x i16> @llvm.cttz.v16i16(<16 x i16> [[TMP1]], i1 true)
+; AVX-NEXT:    store <16 x i16> [[TMP2]], <16 x i16>* bitcast ([16 x i16]* @dst16 to <16 x i16>*), align 2
+; AVX-NEXT:    ret void
 ;
   %ld0  = load i16, i16* getelementptr inbounds ([16 x i16], [16 x i16]* @src16, i16 0, i64  0), align 2
   %ld1  = load i16, i16* getelementptr inbounds ([16 x i16], [16 x i16]* @src16, i16 0, i64  1), align 2
@@ -919,54 +737,9 @@ define void @cttz_undef_16i16() #0 {
 
 define void @cttz_undef_16i8() #0 {
 ; CHECK-LABEL: @cttz_undef_16i8(
-; CHECK-NEXT:    [[LD0:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 0), align 1
-; CHECK-NEXT:    [[LD1:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 1), align 1
-; CHECK-NEXT:    [[LD2:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 2), align 1
-; CHECK-NEXT:    [[LD3:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 3), align 1
-; CHECK-NEXT:    [[LD4:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 4), align 1
-; CHECK-NEXT:    [[LD5:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 5), align 1
-; CHECK-NEXT:    [[LD6:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 6), align 1
-; CHECK-NEXT:    [[LD7:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 7), align 1
-; CHECK-NEXT:    [[LD8:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 8), align 1
-; CHECK-NEXT:    [[LD9:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 9), align 1
-; CHECK-NEXT:    [[LD10:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 10), align 1
-; CHECK-NEXT:    [[LD11:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 11), align 1
-; CHECK-NEXT:    [[LD12:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 12), align 1
-; CHECK-NEXT:    [[LD13:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 13), align 1
-; CHECK-NEXT:    [[LD14:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 14), align 1
-; CHECK-NEXT:    [[LD15:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 15), align 1
-; CHECK-NEXT:    [[CTTZ0:%.*]] = call i8 @llvm.cttz.i8(i8 [[LD0]], i1 true)
-; CHECK-NEXT:    [[CTTZ1:%.*]] = call i8 @llvm.cttz.i8(i8 [[LD1]], i1 true)
-; CHECK-NEXT:    [[CTTZ2:%.*]] = call i8 @llvm.cttz.i8(i8 [[LD2]], i1 true)
-; CHECK-NEXT:    [[CTTZ3:%.*]] = call i8 @llvm.cttz.i8(i8 [[LD3]], i1 true)
-; CHECK-NEXT:    [[CTTZ4:%.*]] = call i8 @llvm.cttz.i8(i8 [[LD4]], i1 true)
-; CHECK-NEXT:    [[CTTZ5:%.*]] = call i8 @llvm.cttz.i8(i8 [[LD5]], i1 true)
-; CHECK-NEXT:    [[CTTZ6:%.*]] = call i8 @llvm.cttz.i8(i8 [[LD6]], i1 true)
-; CHECK-NEXT:    [[CTTZ7:%.*]] = call i8 @llvm.cttz.i8(i8 [[LD7]], i1 true)
-; CHECK-NEXT:    [[CTTZ8:%.*]] = call i8 @llvm.cttz.i8(i8 [[LD8]], i1 true)
-; CHECK-NEXT:    [[CTTZ9:%.*]] = call i8 @llvm.cttz.i8(i8 [[LD9]], i1 true)
-; CHECK-NEXT:    [[CTTZ10:%.*]] = call i8 @llvm.cttz.i8(i8 [[LD10]], i1 true)
-; CHECK-NEXT:    [[CTTZ11:%.*]] = call i8 @llvm.cttz.i8(i8 [[LD11]], i1 true)
-; CHECK-NEXT:    [[CTTZ12:%.*]] = call i8 @llvm.cttz.i8(i8 [[LD12]], i1 true)
-; CHECK-NEXT:    [[CTTZ13:%.*]] = call i8 @llvm.cttz.i8(i8 [[LD13]], i1 true)
-; CHECK-NEXT:    [[CTTZ14:%.*]] = call i8 @llvm.cttz.i8(i8 [[LD14]], i1 true)
-; CHECK-NEXT:    [[CTTZ15:%.*]] = call i8 @llvm.cttz.i8(i8 [[LD15]], i1 true)
-; CHECK-NEXT:    store i8 [[CTTZ0]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 0), align 1
-; CHECK-NEXT:    store i8 [[CTTZ1]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 1), align 1
-; CHECK-NEXT:    store i8 [[CTTZ2]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 2), align 1
-; CHECK-NEXT:    store i8 [[CTTZ3]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 3), align 1
-; CHECK-NEXT:    store i8 [[CTTZ4]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 4), align 1
-; CHECK-NEXT:    store i8 [[CTTZ5]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 5), align 1
-; CHECK-NEXT:    store i8 [[CTTZ6]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 6), align 1
-; CHECK-NEXT:    store i8 [[CTTZ7]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 7), align 1
-; CHECK-NEXT:    store i8 [[CTTZ8]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 8), align 1
-; CHECK-NEXT:    store i8 [[CTTZ9]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 9), align 1
-; CHECK-NEXT:    store i8 [[CTTZ10]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 10), align 1
-; CHECK-NEXT:    store i8 [[CTTZ11]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 11), align 1
-; CHECK-NEXT:    store i8 [[CTTZ12]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 12), align 1
-; CHECK-NEXT:    store i8 [[CTTZ13]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 13), align 1
-; CHECK-NEXT:    store i8 [[CTTZ14]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 14), align 1
-; CHECK-NEXT:    store i8 [[CTTZ15]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 15), align 1
+; CHECK-NEXT:    [[TMP1:%.*]] = load <16 x i8>, <16 x i8>* bitcast ([32 x i8]* @src8 to <16 x i8>*), align 1
+; CHECK-NEXT:    [[TMP2:%.*]] = call <16 x i8> @llvm.cttz.v16i8(<16 x i8> [[TMP1]], i1 true)
+; CHECK-NEXT:    store <16 x i8> [[TMP2]], <16 x i8>* bitcast ([32 x i8]* @dst8 to <16 x i8>*), align 1
 ; CHECK-NEXT:    ret void
 ;
   %ld0  = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64  0), align 1
@@ -1022,102 +795,12 @@ define void @cttz_undef_16i8() #0 {
 
 define void @cttz_undef_32i8() #0 {
 ; CHECK-LABEL: @cttz_undef_32i8(
-; CHECK-NEXT:    [[LD0:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 0), align 1
-; CHECK-NEXT:    [[LD1:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 1), align 1
-; CHECK-NEXT:    [[LD2:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 2), align 1
-; CHECK-NEXT:    [[LD3:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 3), align 1
-; CHECK-NEXT:    [[LD4:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 4), align 1
-; CHECK-NEXT:    [[LD5:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 5), align 1
-; CHECK-NEXT:    [[LD6:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 6), align 1
-; CHECK-NEXT:    [[LD7:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 7), align 1
-; CHECK-NEXT:    [[LD8:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 8), align 1
-; CHECK-NEXT:    [[LD9:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 9), align 1
-; CHECK-NEXT:    [[LD10:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 10), align 1
-; CHECK-NEXT:    [[LD11:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 11), align 1
-; CHECK-NEXT:    [[LD12:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 12), align 1
-; CHECK-NEXT:    [[LD13:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 13), align 1
-; CHECK-NEXT:    [[LD14:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 14), align 1
-; CHECK-NEXT:    [[LD15:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 15), align 1
-; CHECK-NEXT:    [[LD16:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 16), align 1
-; CHECK-NEXT:    [[LD17:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 17), align 1
-; CHECK-NEXT:    [[LD18:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 18), align 1
-; CHECK-NEXT:    [[LD19:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 19), align 1
-; CHECK-NEXT:    [[LD20:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 20), align 1
-; CHECK-NEXT:    [[LD21:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 21), align 1
-; CHECK-NEXT:    [[LD22:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 22), align 1
-; CHECK-NEXT:    [[LD23:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 23), align 1
-; CHECK-NEXT:    [[LD24:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 24), align 1
-; CHECK-NEXT:    [[LD25:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 25), align 1
-; CHECK-NEXT:    [[LD26:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 26), align 1
-; CHECK-NEXT:    [[LD27:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 27), align 1
-; CHECK-NEXT:    [[LD28:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 28), align 1
-; CHECK-NEXT:    [[LD29:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 29), align 1
-; CHECK-NEXT:    [[LD30:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 30), align 1
-; CHECK-NEXT:    [[LD31:%.*]] = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 31), align 1
-; CHECK-NEXT:    [[CTTZ0:%.*]] = call i8 @llvm.cttz.i8(i8 [[LD0]], i1 true)
-; CHECK-NEXT:    [[CTTZ1:%.*]] = call i8 @llvm.cttz.i8(i8 [[LD1]], i1 true)
-; CHECK-NEXT:    [[CTTZ2:%.*]] = call i8 @llvm.cttz.i8(i8 [[LD2]], i1 true)
-; CHECK-NEXT:    [[CTTZ3:%.*]] = call i8 @llvm.cttz.i8(i8 [[LD3]], i1 true)
-; CHECK-NEXT:    [[CTTZ4:%.*]] = call i8 @llvm.cttz.i8(i8 [[LD4]], i1 true)
-; CHECK-NEXT:    [[CTTZ5:%.*]] = call i8 @llvm.cttz.i8(i8 [[LD5]], i1 true)
-; CHECK-NEXT:    [[CTTZ6:%.*]] = call i8 @llvm.cttz.i8(i8 [[LD6]], i1 true)
-; CHECK-NEXT:    [[CTTZ7:%.*]] = call i8 @llvm.cttz.i8(i8 [[LD7]], i1 true)
-; CHECK-NEXT:    [[CTTZ8:%.*]] = call i8 @llvm.cttz.i8(i8 [[LD8]], i1 true)
-; CHECK-NEXT:    [[CTTZ9:%.*]] = call i8 @llvm.cttz.i8(i8 [[LD9]], i1 true)
-; CHECK-NEXT:    [[CTTZ10:%.*]] = call i8 @llvm.cttz.i8(i8 [[LD10]], i1 true)
-; CHECK-NEXT:    [[CTTZ11:%.*]] = call i8 @llvm.cttz.i8(i8 [[LD11]], i1 true)
-; CHECK-NEXT:    [[CTTZ12:%.*]] = call i8 @llvm.cttz.i8(i8 [[LD12]], i1 true)
-; CHECK-NEXT:    [[CTTZ13:%.*]] = call i8 @llvm.cttz.i8(i8 [[LD13]], i1 true)
-; CHECK-NEXT:    [[CTTZ14:%.*]] = call i8 @llvm.cttz.i8(i8 [[LD14]], i1 true)
-; CHECK-NEXT:    [[CTTZ15:%.*]] = call i8 @llvm.cttz.i8(i8 [[LD15]], i1 true)
-; CHECK-NEXT:    [[CTTZ16:%.*]] = call i8 @llvm.cttz.i8(i8 [[LD16]], i1 true)
-; CHECK-NEXT:    [[CTTZ17:%.*]] = call i8 @llvm.cttz.i8(i8 [[LD17]], i1 true)
-; CHECK-NEXT:    [[CTTZ18:%.*]] = call i8 @llvm.cttz.i8(i8 [[LD18]], i1 true)
-; CHECK-NEXT:    [[CTTZ19:%.*]] = call i8 @llvm.cttz.i8(i8 [[LD19]], i1 true)
-; CHECK-NEXT:    [[CTTZ20:%.*]] = call i8 @llvm.cttz.i8(i8 [[LD20]], i1 true)
-; CHECK-NEXT:    [[CTTZ21:%.*]] = call i8 @llvm.cttz.i8(i8 [[LD21]], i1 true)
-; CHECK-NEXT:    [[CTTZ22:%.*]] = call i8 @llvm.cttz.i8(i8 [[LD22]], i1 true)
-; CHECK-NEXT:    [[CTTZ23:%.*]] = call i8 @llvm.cttz.i8(i8 [[LD23]], i1 true)
-; CHECK-NEXT:    [[CTTZ24:%.*]] = call i8 @llvm.cttz.i8(i8 [[LD24]], i1 true)
-; CHECK-NEXT:    [[CTTZ25:%.*]] = call i8 @llvm.cttz.i8(i8 [[LD25]], i1 true)
-; CHECK-NEXT:    [[CTTZ26:%.*]] = call i8 @llvm.cttz.i8(i8 [[LD26]], i1 true)
-; CHECK-NEXT:    [[CTTZ27:%.*]] = call i8 @llvm.cttz.i8(i8 [[LD27]], i1 true)
-; CHECK-NEXT:    [[CTTZ28:%.*]] = call i8 @llvm.cttz.i8(i8 [[LD28]], i1 true)
-; CHECK-NEXT:    [[CTTZ29:%.*]] = call i8 @llvm.cttz.i8(i8 [[LD29]], i1 true)
-; CHECK-NEXT:    [[CTTZ30:%.*]] = call i8 @llvm.cttz.i8(i8 [[LD30]], i1 true)
-; CHECK-NEXT:    [[CTTZ31:%.*]] = call i8 @llvm.cttz.i8(i8 [[LD31]], i1 true)
-; CHECK-NEXT:    store i8 [[CTTZ0]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 0), align 1
-; CHECK-NEXT:    store i8 [[CTTZ1]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 1), align 1
-; CHECK-NEXT:    store i8 [[CTTZ2]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 2), align 1
-; CHECK-NEXT:    store i8 [[CTTZ3]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 3), align 1
-; CHECK-NEXT:    store i8 [[CTTZ4]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 4), align 1
-; CHECK-NEXT:    store i8 [[CTTZ5]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 5), align 1
-; CHECK-NEXT:    store i8 [[CTTZ6]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 6), align 1
-; CHECK-NEXT:    store i8 [[CTTZ7]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 7), align 1
-; CHECK-NEXT:    store i8 [[CTTZ8]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 8), align 1
-; CHECK-NEXT:    store i8 [[CTTZ9]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 9), align 1
-; CHECK-NEXT:    store i8 [[CTTZ10]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 10), align 1
-; CHECK-NEXT:    store i8 [[CTTZ11]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 11), align 1
-; CHECK-NEXT:    store i8 [[CTTZ12]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 12), align 1
-; CHECK-NEXT:    store i8 [[CTTZ13]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 13), align 1
-; CHECK-NEXT:    store i8 [[CTTZ14]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 14), align 1
-; CHECK-NEXT:    store i8 [[CTTZ15]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 15), align 1
-; CHECK-NEXT:    store i8 [[CTTZ16]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 16), align 1
-; CHECK-NEXT:    store i8 [[CTTZ17]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 17), align 1
-; CHECK-NEXT:    store i8 [[CTTZ18]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 18), align 1
-; CHECK-NEXT:    store i8 [[CTTZ19]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 19), align 1
-; CHECK-NEXT:    store i8 [[CTTZ20]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 20), align 1
-; CHECK-NEXT:    store i8 [[CTTZ21]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 21), align 1
-; CHECK-NEXT:    store i8 [[CTTZ22]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 22), align 1
-; CHECK-NEXT:    store i8 [[CTTZ23]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 23), align 1
-; CHECK-NEXT:    store i8 [[CTTZ24]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 24), align 1
-; CHECK-NEXT:    store i8 [[CTTZ25]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 25), align 1
-; CHECK-NEXT:    store i8 [[CTTZ26]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 26), align 1
-; CHECK-NEXT:    store i8 [[CTTZ27]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 27), align 1
-; CHECK-NEXT:    store i8 [[CTTZ28]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 28), align 1
-; CHECK-NEXT:    store i8 [[CTTZ29]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 29), align 1
-; CHECK-NEXT:    store i8 [[CTTZ30]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 30), align 1
-; CHECK-NEXT:    store i8 [[CTTZ31]], i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 31), align 1
+; CHECK-NEXT:    [[TMP1:%.*]] = load <16 x i8>, <16 x i8>* bitcast ([32 x i8]* @src8 to <16 x i8>*), align 1
+; CHECK-NEXT:    [[TMP2:%.*]] = load <16 x i8>, <16 x i8>* bitcast (i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64 16) to <16 x i8>*), align 1
+; CHECK-NEXT:    [[TMP3:%.*]] = call <16 x i8> @llvm.cttz.v16i8(<16 x i8> [[TMP1]], i1 true)
+; CHECK-NEXT:    [[TMP4:%.*]] = call <16 x i8> @llvm.cttz.v16i8(<16 x i8> [[TMP2]], i1 true)
+; CHECK-NEXT:    store <16 x i8> [[TMP3]], <16 x i8>* bitcast ([32 x i8]* @dst8 to <16 x i8>*), align 1
+; CHECK-NEXT:    store <16 x i8> [[TMP4]], <16 x i8>* bitcast (i8* getelementptr inbounds ([32 x i8], [32 x i8]* @dst8, i8 0, i64 16) to <16 x i8>*), align 1
 ; CHECK-NEXT:    ret void
 ;
   %ld0  = load i8, i8* getelementptr inbounds ([32 x i8], [32 x i8]* @src8, i8 0, i64  0), align 1




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