; LLVM IR from ravireddy07/cpp-book :: src/Code-Chef (FLOW017)

; 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 [4 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [13 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [5 x i8], align 1

; Function Attrs: mustprogress norecurse uwtable
define dso_local noundef i32 @main() #0 {
  %1 = alloca i32, align 4
  %2 = alloca i32, align 4
  %3 = alloca i64, align 8
  %4 = alloca i64, align 8
  %5 = alloca i64, align 8
  %6 = alloca i64, align 8
  store i32 0, ptr %1, align 4
  call void @llvm.lifetime.start.p0(i64 4, ptr %2) #3
  %7 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str, ptr noundef %2)
  br label %8

8:                                                ; preds = %78, %0
  %9 = load i32, ptr %2, align 4, !tbaa !5
  %10 = add nsw i32 %9, -1
  store i32 %10, ptr %2, align 4, !tbaa !5
  %11 = icmp ne i32 %9, 0
  br i1 %11, label %12, label %81

12:                                               ; preds = %8
  call void @llvm.lifetime.start.p0(i64 8, ptr %3) #3
  call void @llvm.lifetime.start.p0(i64 8, ptr %4) #3
  call void @llvm.lifetime.start.p0(i64 8, ptr %5) #3
  %13 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str.1, ptr noundef %3, ptr noundef %4, ptr noundef %5)
  call void @llvm.lifetime.start.p0(i64 8, ptr %6) #3
  store i64 0, ptr %6, align 8, !tbaa !9
  %14 = load i64, ptr %3, align 8, !tbaa !9
  %15 = load i64, ptr %4, align 8, !tbaa !9
  %16 = icmp sle i64 %14, %15
  br i1 %16, label %17, label %23

17:                                               ; preds = %12
  %18 = load i64, ptr %4, align 8, !tbaa !9
  %19 = load i64, ptr %5, align 8, !tbaa !9
  %20 = icmp sle i64 %18, %19
  br i1 %20, label %21, label %23

21:                                               ; preds = %17
  %22 = load i64, ptr %4, align 8, !tbaa !9
  store i64 %22, ptr %6, align 8, !tbaa !9
  br label %78

23:                                               ; preds = %17, %12
  %24 = load i64, ptr %3, align 8, !tbaa !9
  %25 = load i64, ptr %5, align 8, !tbaa !9
  %26 = icmp sle i64 %24, %25
  br i1 %26, label %27, label %33

27:                                               ; preds = %23
  %28 = load i64, ptr %5, align 8, !tbaa !9
  %29 = load i64, ptr %4, align 8, !tbaa !9
  %30 = icmp sle i64 %28, %29
  br i1 %30, label %31, label %33

31:                                               ; preds = %27
  %32 = load i64, ptr %5, align 8, !tbaa !9
  store i64 %32, ptr %6, align 8, !tbaa !9
  br label %77

33:                                               ; preds = %27, %23
  %34 = load i64, ptr %4, align 8, !tbaa !9
  %35 = load i64, ptr %3, align 8, !tbaa !9
  %36 = icmp sle i64 %34, %35
  br i1 %36, label %37, label %43

37:                                               ; preds = %33
  %38 = load i64, ptr %3, align 8, !tbaa !9
  %39 = load i64, ptr %5, align 8, !tbaa !9
  %40 = icmp sle i64 %38, %39
  br i1 %40, label %41, label %43

41:                                               ; preds = %37
  %42 = load i64, ptr %3, align 8, !tbaa !9
  store i64 %42, ptr %6, align 8, !tbaa !9
  br label %76

43:                                               ; preds = %37, %33
  %44 = load i64, ptr %4, align 8, !tbaa !9
  %45 = load i64, ptr %5, align 8, !tbaa !9
  %46 = icmp sle i64 %44, %45
  br i1 %46, label %47, label %53

47:                                               ; preds = %43
  %48 = load i64, ptr %5, align 8, !tbaa !9
  %49 = load i64, ptr %3, align 8, !tbaa !9
  %50 = icmp sle i64 %48, %49
  br i1 %50, label %51, label %53

51:                                               ; preds = %47
  %52 = load i64, ptr %5, align 8, !tbaa !9
  store i64 %52, ptr %6, align 8, !tbaa !9
  br label %75

53:                                               ; preds = %47, %43
  %54 = load i64, ptr %5, align 8, !tbaa !9
  %55 = load i64, ptr %3, align 8, !tbaa !9
  %56 = icmp sle i64 %54, %55
  br i1 %56, label %57, label %63

57:                                               ; preds = %53
  %58 = load i64, ptr %3, align 8, !tbaa !9
  %59 = load i64, ptr %4, align 8, !tbaa !9
  %60 = icmp sle i64 %58, %59
  br i1 %60, label %61, label %63

61:                                               ; preds = %57
  %62 = load i64, ptr %3, align 8, !tbaa !9
  store i64 %62, ptr %6, align 8, !tbaa !9
  br label %74

63:                                               ; preds = %57, %53
  %64 = load i64, ptr %5, align 8, !tbaa !9
  %65 = load i64, ptr %4, align 8, !tbaa !9
  %66 = icmp sle i64 %64, %65
  br i1 %66, label %67, label %73

67:                                               ; preds = %63
  %68 = load i64, ptr %4, align 8, !tbaa !9
  %69 = load i64, ptr %3, align 8, !tbaa !9
  %70 = icmp sle i64 %68, %69
  br i1 %70, label %71, label %73

71:                                               ; preds = %67
  %72 = load i64, ptr %4, align 8, !tbaa !9
  store i64 %72, ptr %6, align 8, !tbaa !9
  br label %73

73:                                               ; preds = %71, %67, %63
  br label %74

74:                                               ; preds = %73, %61
  br label %75

75:                                               ; preds = %74, %51
  br label %76

76:                                               ; preds = %75, %41
  br label %77

77:                                               ; preds = %76, %31
  br label %78

78:                                               ; preds = %77, %21
  %79 = load i64, ptr %6, align 8, !tbaa !9
  %80 = call i32 (ptr, ...) @printf(ptr noundef @.str.2, i64 noundef %79)
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #3
  call void @llvm.lifetime.end.p0(i64 8, ptr %5) #3
  call void @llvm.lifetime.end.p0(i64 8, ptr %4) #3
  call void @llvm.lifetime.end.p0(i64 8, ptr %3) #3
  br label %8, !llvm.loop !11

81:                                               ; preds = %8
  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 @__isoc99_scanf(ptr noundef, ...) #2

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

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

attributes #0 = { mustprogress norecurse 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++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"long", !7, i64 0}
!11 = distinct !{!11, !12}
!12 = !{!"llvm.loop.mustprogress"}


; 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 [4 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [13 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [5 x i8], align 1

; Function Attrs: mustprogress nofree norecurse nounwind uwtable
define dso_local noundef i32 @main() local_unnamed_addr #0 {
  %1 = alloca i32, align 4
  %2 = alloca i64, align 8
  %3 = alloca i64, align 8
  %4 = alloca i64, align 8
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %1) #3
  %5 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str, ptr noundef nonnull %1)
  %6 = load i32, ptr %1, align 4, !tbaa !5
  %7 = add nsw i32 %6, -1
  store i32 %7, ptr %1, align 4, !tbaa !5
  %.not24 = icmp eq i32 %6, 0
  br i1 %.not24, label %._crit_edge, label %.lr.ph

.lr.ph:                                           ; preds = %0, %17
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %2) #3
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %3) #3
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %4) #3
  %8 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str.1, ptr noundef nonnull %2, ptr noundef nonnull %3, ptr noundef nonnull %4)
  %9 = load i64, ptr %2, align 8
  %10 = load i64, ptr %3, align 8
  %.not7 = icmp sgt i64 %9, %10
  %11 = load i64, ptr %4, align 8
  %.not8 = icmp sgt i64 %10, %11
  %or.cond = select i1 %.not7, i1 true, i1 %.not8
  br i1 %or.cond, label %12, label %17

12:                                               ; preds = %.lr.ph
  %.not9 = icmp sgt i64 %9, %11
  %.not10 = icmp sgt i64 %11, %10
  %or.cond19 = or i1 %.not9, %.not10
  br i1 %or.cond19, label %13, label %17

13:                                               ; preds = %12
  %.not11 = icmp sgt i64 %10, %9
  %or.cond20 = or i1 %.not11, %.not9
  br i1 %or.cond20, label %14, label %17

14:                                               ; preds = %13
  %.not14 = icmp sgt i64 %11, %9
  %or.cond21 = or i1 %.not8, %.not14
  br i1 %or.cond21, label %15, label %17

15:                                               ; preds = %14
  %or.cond22 = or i1 %.not7, %.not14
  br i1 %or.cond22, label %16, label %17

16:                                               ; preds = %15
  %or.cond23 = or i1 %.not11, %.not10
  %spec.select = select i1 %or.cond23, i64 0, i64 %10
  br label %17

17:                                               ; preds = %16, %15, %14, %13, %12, %.lr.ph
  %.0 = phi i64 [ %10, %.lr.ph ], [ %11, %12 ], [ %9, %13 ], [ %11, %14 ], [ %9, %15 ], [ %spec.select, %16 ]
  %18 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.2, i64 noundef %.0)
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %4) #3
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %3) #3
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %2) #3
  %19 = load i32, ptr %1, align 4, !tbaa !5
  %20 = add nsw i32 %19, -1
  store i32 %20, ptr %1, align 4, !tbaa !5
  %.not = icmp eq i32 %19, 0
  br i1 %.not, label %._crit_edge, label %.lr.ph, !llvm.loop !9

._crit_edge:                                      ; preds = %17, %0
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %1) #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 @__isoc99_scanf(ptr nocapture noundef readonly, ...) local_unnamed_addr #2

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

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

attributes #0 = { mustprogress nofree norecurse 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++ TBAA"}
!9 = distinct !{!9, !10}
!10 = !{!"llvm.loop.mustprogress"}


; Effective O3 passes: EarlyCSEPass,GlobalOptPass,InferFunctionAttrsPass,InstCombinePass,JumpThreadingPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,ReassociatePass,SROAPass,SimplifyCFGPass