FP opt

; ModuleID = 'fp.c'
source_filename = "fp.c"
target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
target triple = "x86_64-unknown-linux-gnu"

@.str = private unnamed_addr constant [10 x i8] c"noopt %f\0A\00", align 1
@.str1 = private unnamed_addr constant [10 x i8] c"fpoeq %f\0A\00", align 1
@.str2 = private unnamed_addr constant [10 x i8] c"fpueq %f\0A\00", align 1

; Function Attrs: nounwind uwtable
define dso_local void @x(float %x, float %y, float %z) local_unnamed_addr #0 {
entry:
  %A = fcmp oeq float %x, -0.0
  %B = fadd float %x, %z
  %conv = select i1 %A, float %z, float %y
  %conv2 = fpext float %conv to double
  %call = tail call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([10 x i8], [10 x i8]* @.str, i64 0, i64 0), double %conv2)
  ret void
}

define dso_local void @x_opt(float %x, float %y, float %z) local_unnamed_addr #0 {
entry:
  %A = fcmp oeq float %x, -0.0
  %conv = select i1 %A, float %z, float %y
  %conv2 = fpext float %conv to double
  %call = tail call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([10 x i8], [10 x i8]* @.str1, i64 0, i64 0), double %conv2)
  ret void
}

define dso_local void @x_opt2(float %x, float %y, float %z) local_unnamed_addr #0 {
entry:
  %A = fcmp ueq float %x, -0.0
  %conv = select i1 %A, float %z, float %y
  %conv2 = fpext float %conv to double
  %call = tail call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([10 x i8], [10 x i8]* @.str2, i64 0, i64 0), double %conv2)
  ret void
}

; Function Attrs: nounwind
declare dso_local i32 @printf(i8* nocapture readonly, ...) local_unnamed_addr #1

; Function Attrs: nounwind uwtable
define dso_local i32 @main(i32 %argc, i8** nocapture readnone %argv) local_unnamed_addr #0 {
entry:
  %a = add nsw i32 %argc, -1
  %fl = sitofp i32 %a to float
  tail call void @x(float %fl, float %fl, float %fl)
  tail call void @x_opt(float %fl, float %fl, float %fl)
  tail call void @x_opt2(float %fl, float %fl, float %fl)

  tail call void @x(float 0x7FF8000000000000, float %fl, float %fl)
  tail call void @x_opt(float 0x7FF8000000000000, float %fl, float %fl)
  tail call void @x_opt2(float 0x7FF8000000000000, float %fl, float %fl)

  tail call void @x(float 0x7FF8000000000000, float 0x7FF8000000000000, float %fl)
  tail call void @x_opt(float 0x7FF8000000000000, float 0x7FF8000000000000, float %fl)
  tail call void @x_opt2(float 0x7FF8000000000000, float 0x7FF8000000000000, float %fl)

  tail call void @x(float 0x7FF8000000000000, float 0x7FF8000000000000, float 0x7FF8000000000000)
  tail call void @x_opt(float 0x7FF8000000000000, float 0x7FF8000000000000, float 0x7FF8000000000000)
  tail call void @x_opt2(float 0x7FF8000000000000, float 0x7FF8000000000000, float 0x7FF8000000000000)
  ret i32 0
}

; Function Attrs: nounwind
declare dso_local i32 @rand() local_unnamed_addr #1

attributes #0 = { nounwind uwtable "correctly-rounded-divide-sqrt-fp-math"="false" "disable-tail-calls"="false" "less-precise-fpmad"="false" "no-frame-pointer-elim"="false" "no-infs-fp-math"="false" "no-jump-tables"="false" "no-nans-fp-math"="false" "no-signed-zeros-fp-math"="false" "no-trapping-math"="false" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+fxsr,+mmx,+sse,+sse2,+x87" "unsafe-fp-math"="false" "use-soft-float"="false" }
attributes #1 = { nounwind "correctly-rounded-divide-sqrt-fp-math"="false" "disable-tail-calls"="false" "less-precise-fpmad"="false" "no-frame-pointer-elim"="false" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "no-signed-zeros-fp-math"="false" "no-trapping-math"="false" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+fxsr,+mmx,+sse,+sse2,+x87" "unsafe-fp-math"="false" "use-soft-float"="false" }
attributes #2 = { nounwind }

!llvm.module.flags = !{!0}
!llvm.ident = !{!1}

!0 = !{i32 1, !"wchar_size", i32 4}
!1 = !{!"clang version 8.0.0 (trunk 338274)"}