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[X86] Add test case for D56765. NFC

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llvm-svn: 351377
This commit is contained in:
Craig Topper 2019-01-16 21:29:26 +00:00
parent c0f210706a
commit 5d7dc5530c
1 changed files with 36 additions and 0 deletions
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36
test/CodeGen/X86/vselect.ll
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@ -610,3 +610,39 @@ define <2 x i32> @simplify_select(i32 %x, <2 x i1> %z) {
ret <2 x i32> %r
}
; Test to make sure we don't try to insert a new setcc to swap the operands
; of select with all zeros LHS if the setcc has additional users.
define void @vselect_allzeros_LHS_multiple_use_setcc(<4 x i32> %x, <4 x i32> %y, <4 x i32> %z, <4 x i32>* %p1, <4 x i32>* %p2) {
; SSE-LABEL: vselect_allzeros_LHS_multiple_use_setcc:
; SSE: # %bb.0:
; SSE-NEXT: movdqa {{.*#+}} xmm3 = [1,2,4,8]
; SSE-NEXT: pand %xmm3, %xmm0
; SSE-NEXT: pcmpeqd %xmm0, %xmm3
; SSE-NEXT: pxor %xmm4, %xmm4
; SSE-NEXT: pcmpeqd %xmm0, %xmm4
; SSE-NEXT: pand %xmm1, %xmm4
; SSE-NEXT: pand %xmm2, %xmm3
; SSE-NEXT: movdqa %xmm4, (%rdi)
; SSE-NEXT: movdqa %xmm3, (%rsi)
; SSE-NEXT: retq
;
; AVX-LABEL: vselect_allzeros_LHS_multiple_use_setcc:
; AVX: # %bb.0:
; AVX-NEXT: vmovdqa {{.*#+}} xmm3 = [1,2,4,8]
; AVX-NEXT: vpand %xmm3, %xmm0, %xmm0
; AVX-NEXT: vpcmpeqd %xmm3, %xmm0, %xmm3
; AVX-NEXT: vpxor %xmm4, %xmm4, %xmm4
; AVX-NEXT: vpcmpeqd %xmm4, %xmm0, %xmm0
; AVX-NEXT: vpand %xmm1, %xmm0, %xmm0
; AVX-NEXT: vpand %xmm2, %xmm3, %xmm1
; AVX-NEXT: vmovdqa %xmm0, (%rdi)
; AVX-NEXT: vmovdqa %xmm1, (%rsi)
; AVX-NEXT: retq
%and = and <4 x i32> %x, <i32 1, i32 2, i32 4, i32 8>
%cond = icmp ne <4 x i32> %and, zeroinitializer
%sel1 = select <4 x i1> %cond, <4 x i32> zeroinitializer, <4 x i32> %y
%sel2 = select <4 x i1> %cond, <4 x i32> %z, <4 x i32> zeroinitializer
store <4 x i32> %sel1, <4 x i32>* %p1
store <4 x i32> %sel2, <4 x i32>* %p2
ret void
}