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[X86][SSE] Add tests showing missing SimplifyDemandedVectorElts support for X86ISD::BLENDV

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llvm-svn: 353164
This commit is contained in:
Simon Pilgrim 2019-02-05 12:18:34 +00:00
parent b2c182d29f
commit 6a67c3821a
1 changed files with 60 additions and 0 deletions
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60
test/CodeGen/X86/combine-sse41-intrinsics.ll
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@ -77,7 +77,67 @@ define <8 x i16> @test3_x86_sse41_pblend_w(<8 x i16> %a0) {
ret <8 x i16> %1
}
define double @demanded_blendvpd(<2 x double> %a0, <2 x double> %a1, <2 x double> %a2) {
; CHECK-LABEL: demanded_blendvpd:
; CHECK: # %bb.0:
; CHECK-NEXT: movddup {{.*#+}} xmm3 = xmm0[0,0]
; CHECK-NEXT: movddup {{.*#+}} xmm1 = xmm1[0,0]
; CHECK-NEXT: movddup {{.*#+}} xmm0 = xmm2[0,0]
; CHECK-NEXT: blendvpd %xmm0, %xmm1, %xmm3
; CHECK-NEXT: movapd %xmm3, %xmm0
; CHECK-NEXT: retq
%1 = shufflevector <2 x double> %a0, <2 x double> undef, <2 x i32> zeroinitializer
%2 = shufflevector <2 x double> %a1, <2 x double> undef, <2 x i32> zeroinitializer
%3 = shufflevector <2 x double> %a2, <2 x double> undef, <2 x i32> zeroinitializer
%4 = tail call <2 x double> @llvm.x86.sse41.blendvpd(<2 x double> %1, <2 x double> %2, <2 x double> %3)
%5 = extractelement <2 x double> %4, i32 0
ret double %5
}
define float @demanded_blendvps(<4 x float> %a0, <4 x float> %a1, <4 x float> %a2) {
; CHECK-LABEL: demanded_blendvps:
; CHECK: # %bb.0:
; CHECK-NEXT: movaps %xmm0, %xmm3
; CHECK-NEXT: shufps {{.*#+}} xmm3 = xmm3[0,0],xmm0[0,0]
; CHECK-NEXT: shufps {{.*#+}} xmm1 = xmm1[0,0,0,0]
; CHECK-NEXT: shufps {{.*#+}} xmm2 = xmm2[0,0,0,0]
; CHECK-NEXT: movaps %xmm2, %xmm0
; CHECK-NEXT: blendvps %xmm0, %xmm1, %xmm3
; CHECK-NEXT: movaps %xmm3, %xmm0
; CHECK-NEXT: retq
%1 = shufflevector <4 x float> %a0, <4 x float> undef, <4 x i32> zeroinitializer
%2 = shufflevector <4 x float> %a1, <4 x float> undef, <4 x i32> zeroinitializer
%3 = shufflevector <4 x float> %a2, <4 x float> undef, <4 x i32> zeroinitializer
%4 = tail call <4 x float> @llvm.x86.sse41.blendvps(<4 x float> %1, <4 x float> %2, <4 x float> %3)
%5 = extractelement <4 x float> %4, i32 0
ret float %5
}
define <16 x i8> @demanded_pblendvb(<16 x i8> %a0, <16 x i8> %a1, <16 x i8> %a2) {
; CHECK-LABEL: demanded_pblendvb:
; CHECK: # %bb.0:
; CHECK-NEXT: movdqa %xmm0, %xmm3
; CHECK-NEXT: pxor %xmm4, %xmm4
; CHECK-NEXT: pshufb %xmm4, %xmm3
; CHECK-NEXT: pshufb %xmm4, %xmm1
; CHECK-NEXT: pshufb %xmm4, %xmm2
; CHECK-NEXT: movdqa %xmm2, %xmm0
; CHECK-NEXT: pblendvb %xmm0, %xmm1, %xmm3
; CHECK-NEXT: pshufb %xmm4, %xmm3
; CHECK-NEXT: movdqa %xmm3, %xmm0
; CHECK-NEXT: retq
%1 = shufflevector <16 x i8> %a0, <16 x i8> undef, <16 x i32> zeroinitializer
%2 = shufflevector <16 x i8> %a1, <16 x i8> undef, <16 x i32> zeroinitializer
%3 = shufflevector <16 x i8> %a2, <16 x i8> undef, <16 x i32> zeroinitializer
%4 = tail call <16 x i8> @llvm.x86.sse41.pblendvb(<16 x i8> %1, <16 x i8> %2, <16 x i8> %3)
%5 = shufflevector <16 x i8> %4, <16 x i8> undef, <16 x i32> zeroinitializer
ret <16 x i8> %5
}
declare <2 x double> @llvm.x86.sse41.blendpd(<2 x double>, <2 x double>, i32)
declare <4 x float> @llvm.x86.sse41.blendps(<4 x float>, <4 x float>, i32)
declare <8 x i16> @llvm.x86.sse41.pblendw(<8 x i16>, <8 x i16>, i32)
declare <2 x double> @llvm.x86.sse41.blendvpd(<2 x double>, <2 x double>, <2 x double>)
declare <4 x float> @llvm.x86.sse41.blendvps(<4 x float>, <4 x float>, <4 x float>)
declare <16 x i8> @llvm.x86.sse41.pblendvb(<16 x i8>, <16 x i8>, <16 x i8>)