[llvm-commits] [llvm] r168600 - in /llvm/trunk: lib/Target/X86/X86ISelLowering.cpp test/CodeGen/X86/avx-splat.ll

[Jakub Staszak]

Author: kuba
Date: Mon Nov 26 13:24:31 2012
New Revision: 168600

URL: http://llvm.org/viewvc/llvm-project?rev=168600&view=rev
Log:
Normalize splat 256bit vectors with 8 elements.

Modified:
    llvm/trunk/lib/Target/X86/X86ISelLowering.cpp
    llvm/trunk/test/CodeGen/X86/avx-splat.ll

Modified: llvm/trunk/lib/Target/X86/X86ISelLowering.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/X86/X86ISelLowering.cpp?rev=168600&r1=168599&r2=168600&view=diff
==============================================================================
--- llvm/trunk/lib/Target/X86/X86ISelLowering.cpp (original)
+++ llvm/trunk/lib/Target/X86/X86ISelLowering.cpp Mon Nov 26 13:24:31 2012
@@ -6689,7 +6689,7 @@
 
     // Handle splats by matching through known shuffle masks
     if ((Size == 128 && NumElem <= 4) ||
-        (Size == 256 && NumElem < 8))
+        (Size == 256 && NumElem <= 8))
       return SDValue();
 
     // All remaning splats are promoted to target supported vector shuffles.

Modified: llvm/trunk/test/CodeGen/X86/avx-splat.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/CodeGen/X86/avx-splat.ll?rev=168600&r1=168599&r2=168600&view=diff
==============================================================================
--- llvm/trunk/test/CodeGen/X86/avx-splat.ll (original)
+++ llvm/trunk/test/CodeGen/X86/avx-splat.ll Mon Nov 26 13:24:31 2012
@@ -47,9 +47,9 @@
 ;   shuffle (scalar_to_vector (load (ptr + 4))), undef, <0, 0, 0, 0>
 ; To:
 ;   shuffle (vload ptr)), undef, <1, 1, 1, 1>
-; CHECK: vmovaps
+; CHECK: vmovdqa
+; CHECK-NEXT: vpshufd $-1
 ; CHECK-NEXT: vinsertf128  $1
-; CHECK-NEXT: vpermilps $-1
 define <8 x float> @funcE() nounwind {
 allocas:
   %udx495 = alloca [18 x [18 x float]], align 32
@@ -75,8 +75,8 @@
   ret <8 x float> %load_broadcast12281250
 }
 
-; CHECK: vinsertf128 $1
-; CHECK-NEXT: vpermilps $0
+; CHECK: vpshufd $0
+; CHECK-NEXT: vinsertf128 $1
 define <8 x float> @funcF(i32 %val) nounwind {
   %ret6 = insertelement <8 x i32> undef, i32 %val, i32 6
   %ret7 = insertelement <8 x i32> %ret6, i32 %val, i32 7
@@ -84,8 +84,8 @@
   ret <8 x float> %tmp
 }
 
-; CHECK: vinsertf128  $1
-; CHECK-NEXT: vpermilps  $0
+; CHECK: vpermilps  $0
+; CHECK-NEXT: vinsertf128  $1
 define <8 x float> @funcG(<8 x float> %a) nounwind uwtable readnone ssp {
 entry:
   %shuffle = shufflevector <8 x float> %a, <8 x float> undef, <8 x i32> <i32 0, i32 0, i32 0, i32 0, i32 0, i32 0, i32 0, i32 0>
@@ -93,8 +93,8 @@
 }
 
 ; CHECK: vextractf128  $1
-; CHECK-NEXT: vinsertf128  $1
 ; CHECK-NEXT: vpermilps  $85
+; CHECK-NEXT: vinsertf128  $1
 define <8 x float> @funcH(<8 x float> %a) nounwind uwtable readnone ssp {
 entry:
   %shuffle = shufflevector <8 x float> %a, <8 x float> undef, <8 x i32> <i32 5, i32 5, i32 5, i32 5, i32 5, i32 5, i32 5, i32 5>