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[X86][SSE] Add SimplifyDemandedBits test for BLENDVPD 

llvm-svn: 353638
This commit is contained in:
Simon Pilgrim 2019-02-10 12:55:44 +00:00
parent 709a3e7488
commit fd541e9a5b
1 changed files with 26 additions and 0 deletions
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26
llvm/test/CodeGen/X86/combine-sse41-intrinsics.ll
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@ -127,6 +127,32 @@ define <16 x i8> @demandedelts_pblendvb(<16 x i8> %a0, <16 x i8> %a1, <16 x i8>
ret <16 x i8> %5
}
define <2 x i64> @demandedbits_blendpd(i64 %a0, i64 %a2, <2 x double> %a3) {
; CHECK-LABEL: demandedbits_blendpd:
; CHECK: # %bb.0:
; CHECK-NEXT: movq %rdi, %rax
; CHECK-NEXT: orq $1, %rax
; CHECK-NEXT: orq $4, %rdi
; CHECK-NEXT: movq %rax, %xmm1
; CHECK-NEXT: movq %rdi, %xmm2
; CHECK-NEXT: movq {{.*#+}} xmm1 = xmm1[0],zero
; CHECK-NEXT: movq {{.*#+}} xmm2 = xmm2[0],zero
; CHECK-NEXT: blendvpd %xmm0, %xmm2, %xmm1
; CHECK-NEXT: psrlq $11, %xmm1
; CHECK-NEXT: movdqa %xmm1, %xmm0
; CHECK-NEXT: retq
%1 = or i64 %a0, 1
%2 = or i64 %a0, 4
%3 = bitcast i64 %1 to double
%4 = bitcast i64 %2 to double
%5 = insertelement <2 x double> zeroinitializer, double %3, i32 0
%6 = insertelement <2 x double> zeroinitializer, double %4, i32 0
%7 = tail call <2 x double> @llvm.x86.sse41.blendvpd(<2 x double> %5, <2 x double> %6, <2 x double> %a3)
%8 = bitcast <2 x double> %7 to <2 x i64>
%9 = lshr <2 x i64> %8, <i64 11, i64 11>
ret <2 x i64> %9
}
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)