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[x86] Switch a constant selection test to use positive assertions and to 

store to real pointers so that its clear that the right code is in fact
being generated.

llvm-svn: 223612
This commit is contained in:
Chandler Carruth 2014-12-07 17:15:58 +00:00
parent c8b6dc7749
commit 3a91c6e60a
1 changed files with 17 additions and 5 deletions
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22
llvm/test/CodeGen/X86/vector-shuffle-128-v16.ll
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@ -1066,13 +1066,25 @@ entry:
ret <16 x i8> %s.2.0
}
define void @constant_gets_selected() {
; ALL-LABEL: constant_gets_selected:
; ALL-NOT movd $0, {{%xmm[0-9]+}}
define void @constant_gets_selected(<4 x i32>* %ptr1, <4 x i32>* %ptr2) {
; SSE-LABEL: constant_gets_selected:
; SSE: # BB#0: # %entry
; SSE-NEXT: xorps %xmm0, %xmm0
; SSE-NEXT: movaps %xmm0, (%rdi)
; SSE-NEXT: movaps %xmm0, (%rsi)
; SSE-NEXT: retq
;
; AVX-LABEL: constant_gets_selected:
; AVX: # BB#0: # %entry
; AVX-NEXT: vxorps %xmm0, %xmm0, %xmm0
; AVX-NEXT: vmovaps %xmm0, (%rdi)
; AVX-NEXT: vmovaps %xmm0, (%rsi)
; AVX-NEXT: retq
entry:
%weird_zero = bitcast <4 x i32> zeroinitializer to <16 x i8>
%shuffle.i = shufflevector <16 x i8> <i8 undef, i8 undef, i8 undef, i8 undef, i8 undef, i8 undef, i8 undef, i8 undef, i8 undef, i8 undef, i8 undef, i8 undef, i8 0, i8 0, i8 0, i8 0>, <16 x i8> %weird_zero, <16 x i32> <i32 12, i32 13, i32 14, i32 15, i32 16, i32 17, i32 18, i32 19, i32 20, i32 21, i32 22, i32 23, i32 24, i32 25, i32 26, i32 27>
%weirder_zero = bitcast <16 x i8> %shuffle.i to <4 x i32>
store <4 x i32> %weirder_zero, <4 x i32>* undef, align 16
store <4 x i32> zeroinitializer, <4 x i32>* undef, align 16
store <4 x i32> %weirder_zero, <4 x i32>* %ptr1, align 16
store <4 x i32> zeroinitializer, <4 x i32>* %ptr2, align 16
ret void
}