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106b79744b
This improves the fix committed at revision 199683 adding the
following new target specific combine rules:
1) fold (v4i32: vselect <0,0,-1,-1>, A, B) ->
(v4i32 (bitcast (movsd (v2i64 (bitcast A)), (v2i64 (bitcast B))) ))
2) fold (v4f32: vselect <0,0,-1,-1>, A, B) ->
(v4f32 (bitcast (movsd (v2f64 (bitcast A)), (v2f64 (bitcast B))) ))
3) fold (v4i32: vselect <-1,-1,0,0>, A, B) ->
(v4i32 (bitcast (movsd (v2i64 (bitcast B)), (v2i64 (bitcast A))) ))
4) fold (v4f32: vselect <-1,-1,0,0>, A, B) ->
(v4f32 (bitcast (movsd (v2i64 (bitcast B)), (v2i64 (bitcast A))) ))
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@200324 91177308-0d34-0410-b5e6-96231b3b80d8
34 lines
1020 B
LLVM
34 lines
1020 B
LLVM
; RUN: llc < %s -mtriple=x86_64-unknown-linux-gnu -mcpu=corei7 -mattr=sse2 | FileCheck %s
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define <4 x i32> @test1(<4 x i32> %A, <4 x i32> %B) {
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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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; CHECK-LABEL: test1
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; CHECK: movsd
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; CHECK: ret
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define <4 x i32> @test2(<4 x i32> %A, <4 x i32> %B) {
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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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; CHECK-LABEL: test2
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; CHECK: movsd
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; CHECK-NEXT: ret
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define <4 x float> @test3(<4 x float> %A, <4 x float> %B) {
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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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; CHECK-LABEL: test3
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; CHECK: movsd
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; CHECK: ret
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define <4 x float> @test4(<4 x float> %A, <4 x float> %B) {
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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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; CHECK-LABEL: test4
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; CHECK: movsd
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; CHECK-NEXT: ret
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