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3d925d24e8
(fptrunc (sqrt (fpext x))) -> (sqrtf x) transformation if -fno-builtin is specified. rdar://10466410 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145460 91177308-0d34-0410-b5e6-96231b3b80d8
18 lines
583 B
LLVM
18 lines
583 B
LLVM
; RUN: opt -instcombine -S -disable-simplify-libcalls < %s | FileCheck %s
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; rdar://10466410
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; Instcombine tries to fold (fptrunc (sqrt (fpext x))) -> (sqrtf x), but this
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; shouldn't fold when sqrtf isn't available.
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define float @foo(float %f) uwtable ssp {
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entry:
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; CHECK: %conv = fpext float %f to double
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; CHECK: %call = tail call double @sqrt(double %conv)
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; CHECK: %conv1 = fptrunc double %call to float
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%conv = fpext float %f to double
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%call = tail call double @sqrt(double %conv)
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%conv1 = fptrunc double %call to float
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ret float %conv1
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}
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declare double @sqrt(double)
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