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"[x86] Simplify vector selection if condition value type matches vselect value type and true value is all ones or false value is all zeros." llvm-svn: 221028
51 lines
1.6 KiB
LLVM
51 lines
1.6 KiB
LLVM
; RUN: llc < %s -mtriple=x86_64-apple-darwin -mcpu=knl | FileCheck %s
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; CHECK-LABEL: select00
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; CHECK: vmovaps
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; CHECK-NEXT: LBB
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define <16 x i32> @select00(i32 %a, <16 x i32> %b) nounwind {
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%cmpres = icmp eq i32 %a, 255
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%selres = select i1 %cmpres, <16 x i32> zeroinitializer, <16 x i32> %b
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%res = xor <16 x i32> %b, %selres
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ret <16 x i32> %res
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}
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; CHECK-LABEL: select01
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; CHECK: vmovaps
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; CHECK-NEXT: LBB
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define <8 x i64> @select01(i32 %a, <8 x i64> %b) nounwind {
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%cmpres = icmp eq i32 %a, 255
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%selres = select i1 %cmpres, <8 x i64> zeroinitializer, <8 x i64> %b
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%res = xor <8 x i64> %b, %selres
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ret <8 x i64> %res
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}
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; CHECK-LABEL: @select02
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; CHECK: cmpless %xmm0, %xmm3, %k1
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; CHECK-NEXT: vmovss %xmm2, {{.*}}%xmm1 {%k1}
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; CHECK: ret
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define float @select02(float %a, float %b, float %c, float %eps) {
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%cmp = fcmp oge float %a, %eps
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%cond = select i1 %cmp, float %c, float %b
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ret float %cond
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}
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; CHECK-LABEL: @select03
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; CHECK: cmplesd %xmm0, %xmm3, %k1
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; CHECK-NEXT: vmovsd %xmm2, {{.*}}%xmm1 {%k1}
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; CHECK: ret
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define double @select03(double %a, double %b, double %c, double %eps) {
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%cmp = fcmp oge double %a, %eps
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%cond = select i1 %cmp, double %c, double %b
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ret double %cond
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}
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; CHECK-LABEL: @select04
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; CHECK: vmovaps %zmm3, %zmm1
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; CHECK-NEXT: ret
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; PR20677
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define <16 x double> @select04(<16 x double> %a, <16 x double> %b) {
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%sel = select <16 x i1> <i1 true, i1 true, i1 true, i1 true, i1 true, i1 true, i1 true, i1 true, i1 false, i1 false, i1 false, i1 false, i1 false, i1 false, i1 false, i1 false>, <16 x double> %a, <16 x double> %b
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ret <16 x double> %sel
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}
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