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; RUN: opt -S -instcombine %s | FileCheck %s
define float @test1(float %x) nounwind readnone ssp {
entry:
; CHECK: @test1
; CHECK-NOT: fpext
; CHECK-NOT: sqrt(
; CHECK: sqrtf(
; CHECK-NOT: fptrunc
%conv = fpext float %x to double ; <double> [#uses=1]
%call = tail call double @sqrt(double %conv) readnone nounwind ; <double> [#uses=1]
%conv1 = fptrunc double %call to float ; <float> [#uses=1]
; CHECK: ret float
ret float %conv1
}
; PR8096
define float @test2(float %x) nounwind readnone ssp {
entry:
; CHECK: @test2
; CHECK-NOT: fpext
; CHECK-NOT: sqrt(
; CHECK: sqrtf(
; CHECK-NOT: fptrunc
%conv = fpext float %x to double ; <double> [#uses=1]
%call = tail call double @sqrt(double %conv) nounwind ; <double> [#uses=1]
%conv1 = fptrunc double %call to float ; <float> [#uses=1]
; CHECK: ret float
ret float %conv1
}
; rdar://9763193
; Can't fold (fptrunc (sqrt (fpext x))) -> (sqrtf x) since there is another
; use of sqrt result.
define float @test3(float* %v) nounwind uwtable ssp {
entry:
; CHECK: @test3
; CHECK: sqrt(
; CHECK-NOT: sqrtf(
; CHECK: fptrunc
%arrayidx13 = getelementptr inbounds float* %v, i64 2
%tmp14 = load float* %arrayidx13
%mul18 = fmul float %tmp14, %tmp14
%add19 = fadd float undef, %mul18
%conv = fpext float %add19 to double
%call34 = call double @sqrt(double %conv) readnone
%call36 = call i32 (double)* @foo(double %call34) nounwind
%conv38 = fptrunc double %call34 to float
ret float %conv38
}
declare i32 @foo(double)
declare double @sqrt(double) readnone
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