; LLVM IR from ahampriyanshu/algo-ds-101 :: Maths/Geometry/Radians_Degrees_Conversion (Radians_Degrees_Conversion)

; Unoptimized IR (clang -disable-llvm-passes):
target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-i128:128-f80:128-n8:16:32:64-S128"
target triple = "x86_64-unknown-linux-gnu"

@.str = external hidden unnamed_addr constant [25 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [66 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [3 x i8], align 1
@.str.3 = external hidden unnamed_addr constant [30 x i8], align 1
@.str.4 = external hidden unnamed_addr constant [30 x i8], align 1
@.str.5 = external hidden unnamed_addr constant [59 x i8], align 1
@.str.6 = external hidden unnamed_addr constant [3 x i8], align 1
@.str.7 = external hidden unnamed_addr constant [13 x i8], align 1
@.str.8 = external hidden unnamed_addr constant [17 x i8], align 1
@.str.9 = external hidden unnamed_addr constant [8 x i8], align 1
@.str.10 = external hidden unnamed_addr constant [8 x i8], align 1
@.str.11 = external hidden unnamed_addr constant [19 x i8], align 1
@.str.12 = external hidden unnamed_addr constant [5 x i8], align 1
@.str.13 = external hidden unnamed_addr constant [3 x i8], align 1

; Function Attrs: nounwind uwtable
define dso_local i32 @main() #0 {
  %1 = alloca i32, align 4
  %2 = alloca i32, align 4
  %3 = alloca float, align 4
  %4 = alloca i8, align 1
  store i32 0, ptr %1, align 4
  call void @llvm.lifetime.start.p0(i64 4, ptr %2) #3
  store i32 0, ptr %2, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %3) #3
  %5 = call i32 (ptr, ...) @printf(ptr noundef @.str)
  br label %6

6:                                                ; preds = %24, %0
  %7 = load i32, ptr %2, align 4, !tbaa !5
  %8 = icmp ne i32 %7, 1
  br i1 %8, label %9, label %12

9:                                                ; preds = %6
  %10 = load i32, ptr %2, align 4, !tbaa !5
  %11 = icmp ne i32 %10, 2
  br label %12

12:                                               ; preds = %9, %6
  %13 = phi i1 [ false, %6 ], [ %11, %9 ]
  br i1 %13, label %14, label %25

14:                                               ; preds = %12
  %15 = call i32 (ptr, ...) @printf(ptr noundef @.str.1)
  %16 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str.2, ptr noundef %2)
  %17 = load i32, ptr %2, align 4, !tbaa !5
  switch i32 %17, label %22 [
    i32 1, label %18
    i32 2, label %20
  ]

18:                                               ; preds = %14
  %19 = call i32 (ptr, ...) @printf(ptr noundef @.str.3)
  br label %24

20:                                               ; preds = %14
  %21 = call i32 (ptr, ...) @printf(ptr noundef @.str.4)
  br label %24

22:                                               ; preds = %14
  %23 = call i32 (ptr, ...) @printf(ptr noundef @.str.5)
  br label %24

24:                                               ; preds = %22, %20, %18
  br label %6, !llvm.loop !9

25:                                               ; preds = %12
  %26 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str.6, ptr noundef %3)
  %27 = load float, ptr %3, align 4, !tbaa !11
  %28 = fpext float %27 to double
  %29 = call i32 (ptr, ...) @printf(ptr noundef @.str.7, double noundef %28)
  %30 = load i32, ptr %2, align 4, !tbaa !5
  %31 = icmp eq i32 %30, 1
  %32 = zext i1 %31 to i64
  %33 = select i1 %31, ptr @.str.9, ptr @.str.10
  %34 = load i32, ptr %2, align 4, !tbaa !5
  %35 = icmp eq i32 %34, 1
  %36 = zext i1 %35 to i64
  %37 = select i1 %35, ptr @.str.10, ptr @.str.9
  %38 = load i32, ptr %2, align 4, !tbaa !5
  %39 = call float @convert(ptr noundef %3, i32 noundef %38)
  %40 = fpext float %39 to double
  %41 = call i32 (ptr, ...) @printf(ptr noundef @.str.8, ptr noundef %33, ptr noundef %37, double noundef %40)
  %42 = load i32, ptr %2, align 4, !tbaa !5
  %43 = icmp eq i32 %42, 1
  br i1 %43, label %44, label %49

44:                                               ; preds = %25
  %45 = load float, ptr %3, align 4, !tbaa !11
  %46 = fpext float %45 to double
  %47 = fdiv double %46, 0x400921FB54442D18
  %48 = call i32 (ptr, ...) @printf(ptr noundef @.str.11, double noundef %47)
  br label %51

49:                                               ; preds = %25
  %50 = call i32 (ptr, ...) @printf(ptr noundef @.str.12)
  br label %51

51:                                               ; preds = %49, %44
  call void @llvm.lifetime.start.p0(i64 1, ptr %4) #3
  %52 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str.13, ptr noundef %4)
  call void @llvm.lifetime.end.p0(i64 1, ptr %4) #3
  call void @llvm.lifetime.end.p0(i64 4, ptr %3) #3
  call void @llvm.lifetime.end.p0(i64 4, ptr %2) #3
  ret i32 0
}

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #1

declare i32 @printf(ptr noundef, ...) #2

declare i32 @__isoc99_scanf(ptr noundef, ...) #2

; Function Attrs: nounwind uwtable
declare dso_local float @convert(ptr noundef, i32 noundef) #0

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #1

attributes #0 = { nounwind uwtable "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
attributes #1 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
attributes #3 = { nounwind }

!llvm.module.flags = !{!0, !1, !2, !3}
!llvm.ident = !{!4}

!0 = !{i32 1, !"wchar_size", i32 4}
!1 = !{i32 8, !"PIC Level", i32 2}
!2 = !{i32 7, !"PIE Level", i32 2}
!3 = !{i32 7, !"uwtable", i32 2}
!4 = !{!"clang version 19.1.0 (git@github.com:llvm/llvm-project.git a4bf6cd7cfb1a1421ba92bca9d017b49936c55e4)"}
!5 = !{!6, !6, i64 0}
!6 = !{!"int", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}
!9 = distinct !{!9, !10}
!10 = !{!"llvm.loop.mustprogress"}
!11 = !{!12, !12, i64 0}
!12 = !{!"float", !7, i64 0}


; Optimized IR (opt -passes='default<O3>'):
target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-i128:128-f80:128-n8:16:32:64-S128"
target triple = "x86_64-unknown-linux-gnu"

@.str = external hidden unnamed_addr constant [25 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [66 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [3 x i8], align 1
@.str.3 = external hidden unnamed_addr constant [30 x i8], align 1
@.str.4 = external hidden unnamed_addr constant [30 x i8], align 1
@.str.5 = external hidden unnamed_addr constant [59 x i8], align 1
@.str.6 = external hidden unnamed_addr constant [3 x i8], align 1
@.str.7 = external hidden unnamed_addr constant [13 x i8], align 1
@.str.8 = external hidden unnamed_addr constant [17 x i8], align 1
@.str.9 = external hidden unnamed_addr constant [8 x i8], align 1
@.str.10 = external hidden unnamed_addr constant [8 x i8], align 1
@.str.11 = external hidden unnamed_addr constant [19 x i8], align 1
@.str.12 = external hidden unnamed_addr constant [5 x i8], align 1
@.str.13 = external hidden unnamed_addr constant [3 x i8], align 1

; Function Attrs: nounwind uwtable
define dso_local noundef i32 @main() local_unnamed_addr #0 {
.lr.ph.preheader:
  %0 = alloca i32, align 4
  %1 = alloca float, align 4
  %2 = alloca i8, align 1
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %0) #3
  store i32 0, ptr %0, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %1) #3
  %3 = tail call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str)
  br label %.lr.ph

.lr.ph:                                           ; preds = %.lr.ph.preheader, %.lr.ph
  %4 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.1)
  %5 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str.2, ptr noundef nonnull %0)
  %6 = load i32, ptr %0, align 4, !tbaa !5
  %switch.selectcmp = icmp eq i32 %6, 2
  %switch.select = select i1 %switch.selectcmp, ptr @.str.4, ptr @.str.5
  %switch.selectcmp1 = icmp eq i32 %6, 1
  %switch.select2 = select i1 %switch.selectcmp1, ptr @.str.3, ptr %switch.select
  %7 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) %switch.select2)
  %8 = load i32, ptr %0, align 4
  %9 = add i32 %8, -3
  %10 = icmp ult i32 %9, -2
  br i1 %10, label %.lr.ph, label %._crit_edge, !llvm.loop !9

._crit_edge:                                      ; preds = %.lr.ph
  %11 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str.6, ptr noundef nonnull %1)
  %12 = load float, ptr %1, align 4, !tbaa !11
  %13 = fpext float %12 to double
  %14 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.7, double noundef %13)
  %15 = load i32, ptr %0, align 4, !tbaa !5
  %16 = icmp eq i32 %15, 1
  %17 = select i1 %16, ptr @.str.9, ptr @.str.10
  %18 = select i1 %16, ptr @.str.10, ptr @.str.9
  %19 = call float @convert(ptr noundef nonnull %1, i32 noundef %15)
  %20 = fpext float %19 to double
  %21 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.8, ptr noundef nonnull %17, ptr noundef nonnull %18, double noundef %20)
  %22 = load i32, ptr %0, align 4, !tbaa !5
  %23 = icmp eq i32 %22, 1
  br i1 %23, label %24, label %29

24:                                               ; preds = %._crit_edge
  %25 = load float, ptr %1, align 4, !tbaa !11
  %26 = fpext float %25 to double
  %27 = fdiv double %26, 0x400921FB54442D18
  %28 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.11, double noundef %27)
  br label %31

29:                                               ; preds = %._crit_edge
  %30 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.12)
  br label %31

31:                                               ; preds = %29, %24
  call void @llvm.lifetime.start.p0(i64 1, ptr nonnull %2) #3
  %32 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str.13, ptr noundef nonnull %2)
  call void @llvm.lifetime.end.p0(i64 1, ptr nonnull %2) #3
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %1) #3
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %0) #3
  ret i32 0
}

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: nofree nounwind
declare noundef i32 @printf(ptr nocapture noundef readonly, ...) local_unnamed_addr #2

; Function Attrs: nofree nounwind
declare noundef i32 @__isoc99_scanf(ptr nocapture noundef readonly, ...) local_unnamed_addr #2

; Function Attrs: nounwind uwtable
declare dso_local float @convert(ptr noundef, i32 noundef) local_unnamed_addr #0

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #1

attributes #0 = { nounwind uwtable "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
attributes #1 = { mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { nofree nounwind "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
attributes #3 = { nounwind }

!llvm.module.flags = !{!0, !1, !2, !3}
!llvm.ident = !{!4}

!0 = !{i32 1, !"wchar_size", i32 4}
!1 = !{i32 8, !"PIC Level", i32 2}
!2 = !{i32 7, !"PIE Level", i32 2}
!3 = !{i32 7, !"uwtable", i32 2}
!4 = !{!"clang version 19.1.0 (git@github.com:llvm/llvm-project.git a4bf6cd7cfb1a1421ba92bca9d017b49936c55e4)"}
!5 = !{!6, !6, i64 0}
!6 = !{!"int", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}
!9 = distinct !{!9, !10}
!10 = !{!"llvm.loop.mustprogress"}
!11 = !{!12, !12, i64 0}
!12 = !{!"float", !7, i64 0}


; Effective O3 passes: EarlyCSEPass,GVNPass,GlobalOptPass,InferFunctionAttrsPass,InstCombinePass,JumpThreadingPass,LoopRotatePass,LoopSimplifyPass,PostOrderFunctionAttrsPass,SCCPPass,SROAPass,SimplifyCFGPass,TailCallElimPass