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8db493c4e1
Selection conditions may be vectors or scalars. Make sure InstCombine doesn't indiscriminately assume that a select which is value dependent on another select have identical select condition types. This fixes PR22773. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@231156 91177308-0d34-0410-b5e6-96231b3b80d8
35 lines
1.1 KiB
LLVM
35 lines
1.1 KiB
LLVM
; RUN: opt -instcombine -S < %s | FileCheck %s
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; CHECK: @foo1
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define float @foo1(float %a) #0 {
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; CHECK-NOT: xor
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%b = fcmp ogt float %a, 0.000000e+00
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%c = select i1 %b, float %a, float 0.000000e+00
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%d = fcmp olt float %c, 1.000000e+00
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%f = select i1 %d, float %c, float 1.000000e+00
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ret float %f
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}
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; CHECK: @foo2
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define float @foo2(float %a) #0 {
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; CHECK-NOT: xor
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%b = fcmp ogt float %a, 0.000000e+00
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%c = select i1 %b, float %a, float 0.000000e+00
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%d = fcmp olt float %c, 1.000000e+00
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%e = select i1 %b, float %a, float 0.000000e+00
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%f = select i1 %d, float %e, float 1.000000e+00
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ret float %f
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}
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; CHECK-LABEL: @foo3
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define <2 x i32> @foo3(<2 x i1> %vec_bool, i1 %bool, <2 x i32> %V) {
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; CHECK: %[[sel0:.*]] = select <2 x i1> %vec_bool, <2 x i32> zeroinitializer, <2 x i32> %V
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; CHECK: %[[sel1:.*]] = select i1 %bool, <2 x i32> %[[sel0]], <2 x i32> %V
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; CHECK: ret <2 x i32> %[[sel1]]
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%sel0 = select <2 x i1> %vec_bool, <2 x i32> zeroinitializer, <2 x i32> %V
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%sel1 = select i1 %bool, <2 x i32> %sel0, <2 x i32> %V
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ret <2 x i32> %sel1
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}
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attributes #0 = { nounwind readnone ssp uwtable }
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