From a0069ba0dbe797ae18354cdd00d84e40f68fb97d Mon Sep 17 00:00:00 2001 From: Simon Pilgrim Date: Sat, 12 Jan 2019 16:38:56 +0000 Subject: [X86] More aggressive shuffle mask widening in combineExtractWithShuffle Use demanded extract index to set most of the shuffle mask to undef, making it easier to widen and peek through. llvm-svn: 351013 --- llvm/test/CodeGen/X86/and-load-fold.ll | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) (limited to 'llvm/test/CodeGen') diff --git a/llvm/test/CodeGen/X86/and-load-fold.ll b/llvm/test/CodeGen/X86/and-load-fold.ll index 27520f88a3f..367ef2a344a 100644 --- a/llvm/test/CodeGen/X86/and-load-fold.ll +++ b/llvm/test/CodeGen/X86/and-load-fold.ll @@ -7,8 +7,7 @@ define i8 @foo(<4 x i8>* %V) { ; CHECK-LABEL: foo: ; CHECK: # %bb.0: ; CHECK-NEXT: movd {{.*#+}} xmm0 = mem[0],zero,zero,zero -; CHECK-NEXT: punpcklbw {{.*#+}} xmm0 = xmm0[0,0,1,1,2,2,3,3,4,4,5,5,6,6,7,7] -; CHECK-NEXT: pextrw $2, %xmm0, %eax +; CHECK-NEXT: pextrw $1, %xmm0, %eax ; CHECK-NEXT: andb $95, %al ; CHECK-NEXT: # kill: def $al killed $al killed $eax ; CHECK-NEXT: retq -- cgit v1.2.3