[llvm] r302949 - [x86] add vector tests for demanded bits; NFC

[Sanjay Patel via llvm-commits]

Author: spatel
Date: Fri May 12 15:53:48 2017
New Revision: 302949

URL: http://llvm.org/viewvc/llvm-project?rev=302949&view=rev
Log:
[x86] add vector tests for demanded bits; NFC

Modified:
    llvm/trunk/test/CodeGen/X86/not-and-simplify.ll

Modified: llvm/trunk/test/CodeGen/X86/not-and-simplify.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/CodeGen/X86/not-and-simplify.ll?rev=302949&r1=302948&r2=302949&view=diff
==============================================================================
--- llvm/trunk/test/CodeGen/X86/not-and-simplify.ll (original)
+++ llvm/trunk/test/CodeGen/X86/not-and-simplify.ll Fri May 12 15:53:48 2017
@@ -1,3 +1,4 @@
+; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
 ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
 ; RUN: llc < %s -mtriple=x86_64-unknown-unknown -mattr=-bmi | FileCheck %s --check-prefix=ALL --check-prefix=NO_BMI
 ; RUN: llc < %s -mtriple=x86_64-unknown-unknown -mattr=+bmi | FileCheck %s --check-prefix=ALL --check-prefix=BMI
@@ -11,13 +12,24 @@ define i32 @shrink_xor_constant1(i32 %x)
 ; ALL-NEXT:    xorl $1, %edi
 ; ALL-NEXT:    movl %edi, %eax
 ; ALL-NEXT:    retq
-;
   %sh = lshr i32 %x, 31
   %not = xor i32 %sh, -1
   %and = and i32 %not, 1
   ret i32 %and
 }
 
+define <4 x i32> @shrink_xor_constant1_splat(<4 x i32> %x) {
+; ALL-LABEL: shrink_xor_constant1_splat:
+; ALL:       # BB#0:
+; ALL-NEXT:    psrld $31, %xmm0
+; ALL-NEXT:    pandn {{.*}}(%rip), %xmm0
+; ALL-NEXT:    retq
+  %sh = lshr <4 x i32> %x, <i32 31, i32 31, i32 31, i32 31>
+  %not = xor <4 x i32> %sh, <i32 -1, i32 -1, i32 -1, i32 -1>
+  %and = and <4 x i32> %not, <i32 1, i32 1, i32 1, i32 1>
+  ret <4 x i32> %and
+}
+
 ; Clear low bits via shift, set them with xor (not), then mask them off.
 
 define i8 @shrink_xor_constant2(i8 %x) {
@@ -27,10 +39,22 @@ define i8 @shrink_xor_constant2(i8 %x) {
 ; ALL-NEXT:    xorb $-32, %dil
 ; ALL-NEXT:    movl %edi, %eax
 ; ALL-NEXT:    retq
-;
   %sh = shl i8 %x, 5
   %not = xor i8 %sh, -1
   %and = and i8 %not, 224 ; 0xE0
   ret i8 %and
 }
 
+define <16 x i8> @shrink_xor_constant2_splat(<16 x i8> %x) {
+; ALL-LABEL: shrink_xor_constant2_splat:
+; ALL:       # BB#0:
+; ALL-NEXT:    psllw $5, %xmm0
+; ALL-NEXT:    pand {{.*}}(%rip), %xmm0
+; ALL-NEXT:    pandn {{.*}}(%rip), %xmm0
+; ALL-NEXT:    retq
+  %sh = shl <16 x i8> %x, <i8 5, i8 5, i8 5, i8 5, i8 5, i8 5, i8 5, i8 5, i8 5, i8 5, i8 5, i8 5, i8 5, i8 5, i8 5, i8 5>
+  %not = xor <16 x i8> %sh, <i8 -1, i8 -1, i8 -1, i8 -1, i8 -1, i8 -1, i8 -1, i8 -1, i8 -1, i8 -1, i8 -1, i8 -1, i8 -1, i8 -1, i8 -1, i8 -1>
+  %and = and <16 x i8> %not, <i8 1, i8 1, i8 1, i8 1, i8 1, i8 1, i8 1, i8 1, i8 1, i8 1, i8 1, i8 1, i8 1, i8 1, i8 1, i8 1>
+  ret <16 x i8> %and
+}
+