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https://github.com/c64scene-ar/llvm-6502.git
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a1e1f01699
This patch teaches function 'transformVSELECTtoBlendVECTOR_SHUFFLE' how to convert VSELECT dag nodes to shuffles on targets that do not have SSE4.1. On pre-SSE4.1 targets, we can still perform blend operations using movss/movsd. Also, removed a target specific combine that performed a premature lowering of VSELECT nodes to target specific MOVSS/MOVSD nodes. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@222647 91177308-0d34-0410-b5e6-96231b3b80d8
61 lines
1.9 KiB
LLVM
61 lines
1.9 KiB
LLVM
; RUN: llc < %s -mtriple=x86_64-unknown-unknown -mattr=+sse2 | FileCheck %s --check-prefix=SSE2
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; RUN: llc < %s -mtriple=x86_64-unknown-unknown -mattr=+sse4.1 | FileCheck %s --check-prefix=SSE41
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define <4 x i32> @test1(<4 x i32> %A, <4 x i32> %B) {
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; SSE2-LABEL: test1
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; SSE2: # BB#0:
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; SSE2-NEXT: movsd %xmm0, %xmm1
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; SSE2-NEXT: movaps %xmm1, %xmm0
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; SSE2-NEXT: retq
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;
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; SSE41-LABEL: test1
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; SSE41: # BB#0:
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; SSE41-NEXT: pblendw {{.*#+}} xmm0 = xmm0[0,1,2,3],xmm1[4,5,6,7]
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; SSE41-NEXT: retq
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%select = select <4 x i1><i1 true, i1 true, i1 false, i1 false>, <4 x i32> %A, <4 x i32> %B
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ret <4 x i32> %select
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}
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define <4 x i32> @test2(<4 x i32> %A, <4 x i32> %B) {
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; SSE2-LABEL: test2
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; SSE2: # BB#0:
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; SSE2-NEXT: movsd %xmm1, %xmm0
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; SSE2-NEXT: retq
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;
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; SSE41-LABEL: test2
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; SSE41: # BB#0:
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; SSE41-NEXT: pblendw {{.*#+}} xmm0 = xmm1[0,1,2,3],xmm0[4,5,6,7]
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; SSE41-NEXT: retq
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%select = select <4 x i1><i1 false, i1 false, i1 true, i1 true>, <4 x i32> %A, <4 x i32> %B
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ret <4 x i32> %select
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}
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define <4 x float> @test3(<4 x float> %A, <4 x float> %B) {
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; SSE2-LABEL: test3
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; SSE2: # BB#0:
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; SSE2-NEXT: movsd %xmm0, %xmm1
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; SSE2-NEXT: movaps %xmm1, %xmm0
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; SSE2-NEXT: retq
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;
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; SSE41-LABEL: test3
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; SSE41: # BB#0:
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; SSE41-NEXT: blendpd {{.*#+}} xmm0 = xmm0[0],xmm1[1]
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; SSE41-NEXT: retq
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%select = select <4 x i1><i1 true, i1 true, i1 false, i1 false>, <4 x float> %A, <4 x float> %B
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ret <4 x float> %select
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}
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define <4 x float> @test4(<4 x float> %A, <4 x float> %B) {
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; SSE2-LABEL: test4
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; SSE2: # BB#0:
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; SSE2-NEXT: movsd %xmm1, %xmm0
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; SSE2-NEXT: retq
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;
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; SSE41-LABEL: test4
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; SSE41: # BB#0:
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; SSE41-NEXT: blendpd {{.*#+}} xmm0 = xmm1[0],xmm0[1]
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; SSE41-NEXT: retq
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%select = select <4 x i1><i1 false, i1 false, i1 true, i1 true>, <4 x float> %A, <4 x float> %B
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ret <4 x float> %select
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}
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