; LLVM IR from lzyrapx/Competitive-Programming :: HDUOJ (1840)

; 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 [3 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [7 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [5 x i8], align 1
@.str.3 = external hidden unnamed_addr constant [3 x i8], align 1
@.str.4 = external hidden unnamed_addr constant [3 x i8], align 1
@.str.5 = external hidden unnamed_addr constant [3 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 i32, align 4
  %4 = alloca i32, align 4
  %5 = alloca i32, align 4
  store i32 0, ptr %1, align 4
  call void @llvm.lifetime.start.p0(i64 4, ptr %2) #3
  call void @llvm.lifetime.start.p0(i64 4, ptr %3) #3
  call void @llvm.lifetime.start.p0(i64 4, ptr %4) #3
  call void @llvm.lifetime.start.p0(i64 4, ptr %5) #3
  %6 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str, ptr noundef %2)
  br label %7

7:                                                ; preds = %92, %0
  %8 = load i32, ptr %2, align 4, !tbaa !5
  %9 = add nsw i32 %8, -1
  store i32 %9, ptr %2, align 4, !tbaa !5
  %10 = icmp ne i32 %8, 0
  br i1 %10, label %11, label %93

11:                                               ; preds = %7
  %12 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str.1, ptr noundef %3, ptr noundef %4, ptr noundef %5)
  %13 = load i32, ptr %3, align 4, !tbaa !5
  %14 = icmp eq i32 %13, 0
  br i1 %14, label %15, label %23

15:                                               ; preds = %11
  %16 = load i32, ptr %4, align 4, !tbaa !5
  %17 = icmp eq i32 %16, 0
  br i1 %17, label %18, label %23

18:                                               ; preds = %15
  %19 = load i32, ptr %5, align 4, !tbaa !5
  %20 = icmp eq i32 %19, 0
  br i1 %20, label %21, label %23

21:                                               ; preds = %18
  %22 = call i32 (ptr, ...) @printf(ptr noundef @.str.2)
  br label %92

23:                                               ; preds = %18, %15, %11
  %24 = load i32, ptr %3, align 4, !tbaa !5
  %25 = icmp eq i32 %24, 0
  br i1 %25, label %26, label %34

26:                                               ; preds = %23
  %27 = load i32, ptr %4, align 4, !tbaa !5
  %28 = icmp eq i32 %27, 0
  br i1 %28, label %29, label %34

29:                                               ; preds = %26
  %30 = load i32, ptr %5, align 4, !tbaa !5
  %31 = icmp ne i32 %30, 0
  br i1 %31, label %32, label %34

32:                                               ; preds = %29
  %33 = call i32 (ptr, ...) @printf(ptr noundef @.str.3)
  br label %91

34:                                               ; preds = %29, %26, %23
  %35 = load i32, ptr %3, align 4, !tbaa !5
  %36 = icmp eq i32 %35, 0
  br i1 %36, label %37, label %42

37:                                               ; preds = %34
  %38 = load i32, ptr %4, align 4, !tbaa !5
  %39 = icmp ne i32 %38, 0
  br i1 %39, label %40, label %42

40:                                               ; preds = %37
  %41 = call i32 (ptr, ...) @printf(ptr noundef @.str.4)
  br label %90

42:                                               ; preds = %37, %34
  %43 = load i32, ptr %3, align 4, !tbaa !5
  %44 = icmp ne i32 %43, 0
  br i1 %44, label %45, label %57

45:                                               ; preds = %42
  %46 = load i32, ptr %4, align 4, !tbaa !5
  %47 = load i32, ptr %4, align 4, !tbaa !5
  %48 = mul nsw i32 %46, %47
  %49 = load i32, ptr %3, align 4, !tbaa !5
  %50 = mul nsw i32 4, %49
  %51 = load i32, ptr %5, align 4, !tbaa !5
  %52 = mul nsw i32 %50, %51
  %53 = sub nsw i32 %48, %52
  %54 = icmp sgt i32 %53, 0
  br i1 %54, label %55, label %57

55:                                               ; preds = %45
  %56 = call i32 (ptr, ...) @printf(ptr noundef @.str.5)
  br label %89

57:                                               ; preds = %45, %42
  %58 = load i32, ptr %3, align 4, !tbaa !5
  %59 = icmp ne i32 %58, 0
  br i1 %59, label %60, label %72

60:                                               ; preds = %57
  %61 = load i32, ptr %4, align 4, !tbaa !5
  %62 = load i32, ptr %4, align 4, !tbaa !5
  %63 = mul nsw i32 %61, %62
  %64 = load i32, ptr %3, align 4, !tbaa !5
  %65 = mul nsw i32 4, %64
  %66 = load i32, ptr %5, align 4, !tbaa !5
  %67 = mul nsw i32 %65, %66
  %68 = sub nsw i32 %63, %67
  %69 = icmp eq i32 %68, 0
  br i1 %69, label %70, label %72

70:                                               ; preds = %60
  %71 = call i32 (ptr, ...) @printf(ptr noundef @.str.4)
  br label %88

72:                                               ; preds = %60, %57
  %73 = load i32, ptr %3, align 4, !tbaa !5
  %74 = icmp ne i32 %73, 0
  br i1 %74, label %75, label %87

75:                                               ; preds = %72
  %76 = load i32, ptr %4, align 4, !tbaa !5
  %77 = load i32, ptr %4, align 4, !tbaa !5
  %78 = mul nsw i32 %76, %77
  %79 = load i32, ptr %3, align 4, !tbaa !5
  %80 = mul nsw i32 4, %79
  %81 = load i32, ptr %5, align 4, !tbaa !5
  %82 = mul nsw i32 %80, %81
  %83 = sub nsw i32 %78, %82
  %84 = icmp slt i32 %83, 0
  br i1 %84, label %85, label %87

85:                                               ; preds = %75
  %86 = call i32 (ptr, ...) @printf(ptr noundef @.str.3)
  br label %87

87:                                               ; preds = %85, %75, %72
  br label %88

88:                                               ; preds = %87, %70
  br label %89

89:                                               ; preds = %88, %55
  br label %90

90:                                               ; preds = %89, %40
  br label %91

91:                                               ; preds = %90, %32
  br label %92

92:                                               ; preds = %91, %21
  br label %7, !llvm.loop !9

93:                                               ; preds = %7
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #3
  call void @llvm.lifetime.end.p0(i64 4, 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 @__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 = distinct !{!9, !10}
!10 = !{!"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 [3 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [7 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [5 x i8], align 1
@.str.3 = external hidden unnamed_addr constant [3 x i8], align 1
@.str.4 = external hidden unnamed_addr constant [3 x i8], align 1
@.str.5 = external hidden unnamed_addr constant [3 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 i32, align 4
  %3 = alloca i32, align 4
  %4 = alloca i32, align 4
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %1) #3
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %2) #3
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %3) #3
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %4) #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
  %.not16 = icmp eq i32 %6, 0
  br i1 %.not16, label %._crit_edge, label %.lr.ph

.lr.ph:                                           ; preds = %0, %.thread15
  %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 i32, ptr %2, align 4, !tbaa !5
  %10 = icmp eq i32 %9, 0
  %11 = load i32, ptr %3, align 4
  %12 = icmp eq i32 %11, 0
  %or.cond = select i1 %10, i1 %12, i1 false
  %13 = load i32, ptr %4, align 4
  %14 = icmp eq i32 %13, 0
  %or.cond3 = select i1 %or.cond, i1 %14, i1 false
  br i1 %or.cond3, label %.thread15.sink.split, label %15

15:                                               ; preds = %.lr.ph
  %16 = icmp ne i32 %13, 0
  %or.cond7 = select i1 %or.cond, i1 %16, i1 false
  br i1 %or.cond7, label %.thread15.sink.split, label %17

17:                                               ; preds = %15
  %18 = icmp ne i32 %11, 0
  %or.cond9 = select i1 %10, i1 %18, i1 false
  br i1 %or.cond9, label %.thread15.sink.split, label %19

19:                                               ; preds = %17
  br i1 %10, label %.thread15, label %20

20:                                               ; preds = %19
  %21 = mul nsw i32 %11, %11
  %22 = shl nsw i32 %9, 2
  %23 = mul nsw i32 %22, %13
  %24 = icmp sgt i32 %21, %23
  br i1 %24, label %.thread15.sink.split, label %25

25:                                               ; preds = %20
  %26 = icmp eq i32 %21, %23
  br i1 %26, label %.thread15.sink.split, label %27

27:                                               ; preds = %25
  %28 = icmp slt i32 %21, %23
  br i1 %28, label %.thread15.sink.split, label %.thread15

.thread15.sink.split:                             ; preds = %27, %25, %20, %17, %15, %.lr.ph
  %.str.3.sink = phi ptr [ @.str.2, %.lr.ph ], [ @.str.3, %15 ], [ @.str.4, %17 ], [ @.str.5, %20 ], [ @.str.4, %25 ], [ @.str.3, %27 ]
  %29 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) %.str.3.sink)
  br label %.thread15

.thread15:                                        ; preds = %.thread15.sink.split, %19, %27
  %30 = load i32, ptr %1, align 4, !tbaa !5
  %31 = add nsw i32 %30, -1
  store i32 %31, ptr %1, align 4, !tbaa !5
  %.not = icmp eq i32 %30, 0
  br i1 %.not, label %._crit_edge, label %.lr.ph, !llvm.loop !9

._crit_edge:                                      ; preds = %.thread15, %0
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %4) #3
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %3) #3
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %2) #3
  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,GVNPass,GlobalOptPass,InferFunctionAttrsPass,InstCombinePass,JumpThreadingPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,ReassociatePass,SROAPass,SimplifyCFGPass