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[X86][SSE] Update pshufb mask test to use a real input instead of undef

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We are getting better at combining constant pshufb masks - this test would've failed once we decode bitcasted masks as well.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@261095 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Simon Pilgrim 2016-02-17 14:56:58 +00:00
parent 45f4118982
commit a1e2a8fb10
1 changed files with 6 additions and 6 deletions
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12
test/CodeGen/X86/pshufb-mask-comments.ll
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@ -36,18 +36,18 @@ define <16 x i8> @test3(<16 x i8> %V) {
; Test that we won't crash when the constant was reused for another instruction.
define <16 x i8> @test4(<2 x i64>* %V) {
define <16 x i8> @test4(<16 x i8> %V, <2 x i64>* %P) {
; CHECK-LABEL: test4:
; CHECK: # BB#0:
; CHECK-NEXT: movdqa {{.*#+}} xmm0 = [1084818905618843912,506097522914230528]
; CHECK-NEXT: movdqa %xmm0, (%rdi)
; CHECK-NEXT: pshufb %xmm0, %xmm0
; CHECK-NEXT: movdqa {{.*#+}} xmm1 = [1084818905618843912,506097522914230528]
; CHECK-NEXT: movdqa %xmm1, (%rdi)
; CHECK-NEXT: pshufb %xmm1, %xmm0
; CHECK-NEXT: retq
%1 = insertelement <2 x i64> undef, i64 1084818905618843912, i32 0
%2 = insertelement <2 x i64> %1, i64 506097522914230528, i32 1
store <2 x i64> %2, <2 x i64>* %V, align 16
store <2 x i64> %2, <2 x i64>* %P, align 16
%3 = bitcast <2 x i64> %2 to <16 x i8>
%4 = tail call <16 x i8> @llvm.x86.ssse3.pshuf.b.128(<16 x i8> undef, <16 x i8> %3)
%4 = tail call <16 x i8> @llvm.x86.ssse3.pshuf.b.128(<16 x i8> %V, <16 x i8> %3)
ret <16 x i8> %4
}