; LLVM IR from ahampriyanshu/algo-ds-101 :: Algorithms/Sorting/Bucket_Sort (bucketsortinC)

; 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 [27 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [3 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [37 x i8], align 1
@.str.3 = external hidden unnamed_addr constant [42 x i8], align 1
@.str.4 = external hidden unnamed_addr constant [4 x i8], align 1
@.str.5 = external hidden unnamed_addr constant [41 x i8], align 1
@.str.6 = external hidden unnamed_addr constant [2 x i8], align 1

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

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

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

; Function Attrs: nounwind uwtable
define dso_local i32 @main() #0 {
  %1 = alloca i32, align 4
  %2 = alloca [100 x i32], align 16
  %3 = alloca i32, align 4
  %4 = alloca i32, align 4
  store i32 0, ptr %1, align 4
  call void @llvm.lifetime.start.p0(i64 400, 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
  %5 = call i32 (ptr, ...) @printf(ptr noundef @.str)
  %6 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str.1, ptr noundef %4)
  %7 = load i32, ptr %4, align 4, !tbaa !5
  %8 = call i32 (ptr, ...) @printf(ptr noundef @.str.2, i32 noundef %7)
  store i32 0, ptr %3, align 4, !tbaa !5
  br label %9

9:                                                ; preds = %18, %0
  %10 = load i32, ptr %3, align 4, !tbaa !5
  %11 = load i32, ptr %4, align 4, !tbaa !5
  %12 = icmp slt i32 %10, %11
  br i1 %12, label %13, label %21

13:                                               ; preds = %9
  %14 = load i32, ptr %3, align 4, !tbaa !5
  %15 = sext i32 %14 to i64
  %16 = getelementptr inbounds [100 x i32], ptr %2, i64 0, i64 %15
  %17 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str.1, ptr noundef %16)
  br label %18

18:                                               ; preds = %13
  %19 = load i32, ptr %3, align 4, !tbaa !5
  %20 = add nsw i32 %19, 1
  store i32 %20, ptr %3, align 4, !tbaa !5
  br label %9, !llvm.loop !9

21:                                               ; preds = %9
  %22 = call i32 (ptr, ...) @printf(ptr noundef @.str.3)
  store i32 0, ptr %3, align 4, !tbaa !5
  br label %23

23:                                               ; preds = %33, %21
  %24 = load i32, ptr %3, align 4, !tbaa !5
  %25 = load i32, ptr %4, align 4, !tbaa !5
  %26 = icmp slt i32 %24, %25
  br i1 %26, label %27, label %36

27:                                               ; preds = %23
  %28 = load i32, ptr %3, align 4, !tbaa !5
  %29 = sext i32 %28 to i64
  %30 = getelementptr inbounds [100 x i32], ptr %2, i64 0, i64 %29
  %31 = load i32, ptr %30, align 4, !tbaa !5
  %32 = call i32 (ptr, ...) @printf(ptr noundef @.str.4, i32 noundef %31)
  br label %33

33:                                               ; preds = %27
  %34 = load i32, ptr %3, align 4, !tbaa !5
  %35 = add nsw i32 %34, 1
  store i32 %35, ptr %3, align 4, !tbaa !5
  br label %23, !llvm.loop !11

36:                                               ; preds = %23
  %37 = call i32 (ptr, ...) @printf(ptr noundef @.str.5)
  %38 = getelementptr inbounds [100 x i32], ptr %2, i64 0, i64 0
  %39 = load i32, ptr %4, align 4, !tbaa !5
  call void @Bucket_Sort(ptr noundef %38, i32 noundef %39)
  store i32 0, ptr %3, align 4, !tbaa !5
  br label %40

40:                                               ; preds = %50, %36
  %41 = load i32, ptr %3, align 4, !tbaa !5
  %42 = load i32, ptr %4, align 4, !tbaa !5
  %43 = icmp slt i32 %41, %42
  br i1 %43, label %44, label %53

44:                                               ; preds = %40
  %45 = load i32, ptr %3, align 4, !tbaa !5
  %46 = sext i32 %45 to i64
  %47 = getelementptr inbounds [100 x i32], ptr %2, i64 0, i64 %46
  %48 = load i32, ptr %47, align 4, !tbaa !5
  %49 = call i32 (ptr, ...) @printf(ptr noundef @.str.4, i32 noundef %48)
  br label %50

50:                                               ; preds = %44
  %51 = load i32, ptr %3, align 4, !tbaa !5
  %52 = add nsw i32 %51, 1
  store i32 %52, ptr %3, align 4, !tbaa !5
  br label %40, !llvm.loop !12

53:                                               ; preds = %40
  %54 = call i32 (ptr, ...) @printf(ptr noundef @.str.6)
  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 400, ptr %2) #3
  ret i32 0
}

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

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

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 = distinct !{!11, !10}
!12 = distinct !{!12, !10}


; 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 [27 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [3 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [37 x i8], align 1
@.str.3 = external hidden unnamed_addr constant [42 x i8], align 1
@.str.4 = external hidden unnamed_addr constant [4 x i8], align 1
@.str.5 = external hidden unnamed_addr constant [41 x i8], align 1
@.str.6 = external hidden unnamed_addr constant [2 x i8], align 1

; Function Attrs: nounwind uwtable
declare dso_local void @Bucket_Sort(ptr noundef, i32 noundef) local_unnamed_addr #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: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: nounwind uwtable
define dso_local noundef i32 @main() local_unnamed_addr #0 {
  %1 = alloca [100 x i32], align 16
  %2 = alloca i32, align 4
  call void @llvm.lifetime.start.p0(i64 400, ptr nonnull %1) #3
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %2) #3
  %3 = tail call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str)
  %4 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str.1, ptr noundef nonnull %2)
  %5 = load i32, ptr %2, align 4, !tbaa !5
  %6 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.2, i32 noundef %5)
  %7 = load i32, ptr %2, align 4, !tbaa !5
  %8 = icmp sgt i32 %7, 0
  br i1 %8, label %.lr.ph, label %._crit_edge

.lr.ph:                                           ; preds = %0, %.lr.ph
  %indvars.iv = phi i64 [ %indvars.iv.next, %.lr.ph ], [ 0, %0 ]
  %9 = getelementptr inbounds [100 x i32], ptr %1, i64 0, i64 %indvars.iv
  %10 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str.1, ptr noundef nonnull %9)
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %11 = load i32, ptr %2, align 4, !tbaa !5
  %12 = sext i32 %11 to i64
  %13 = icmp slt i64 %indvars.iv.next, %12
  br i1 %13, label %.lr.ph, label %._crit_edge, !llvm.loop !9

._crit_edge:                                      ; preds = %.lr.ph, %0
  %14 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.3)
  %15 = load i32, ptr %2, align 4, !tbaa !5
  %16 = icmp sgt i32 %15, 0
  br i1 %16, label %.lr.ph12, label %._crit_edge13

.lr.ph12:                                         ; preds = %._crit_edge, %.lr.ph12
  %indvars.iv19 = phi i64 [ %indvars.iv.next20, %.lr.ph12 ], [ 0, %._crit_edge ]
  %17 = getelementptr inbounds [100 x i32], ptr %1, i64 0, i64 %indvars.iv19
  %18 = load i32, ptr %17, align 4, !tbaa !5
  %19 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.4, i32 noundef %18)
  %indvars.iv.next20 = add nuw nsw i64 %indvars.iv19, 1
  %20 = load i32, ptr %2, align 4, !tbaa !5
  %21 = sext i32 %20 to i64
  %22 = icmp slt i64 %indvars.iv.next20, %21
  br i1 %22, label %.lr.ph12, label %._crit_edge13, !llvm.loop !11

._crit_edge13:                                    ; preds = %.lr.ph12, %._crit_edge
  %23 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.5)
  %24 = load i32, ptr %2, align 4, !tbaa !5
  call void @Bucket_Sort(ptr noundef nonnull %1, i32 noundef %24)
  %25 = load i32, ptr %2, align 4, !tbaa !5
  %26 = icmp sgt i32 %25, 0
  br i1 %26, label %.lr.ph16, label %._crit_edge17

.lr.ph16:                                         ; preds = %._crit_edge13, %.lr.ph16
  %indvars.iv22 = phi i64 [ %indvars.iv.next23, %.lr.ph16 ], [ 0, %._crit_edge13 ]
  %27 = getelementptr inbounds [100 x i32], ptr %1, i64 0, i64 %indvars.iv22
  %28 = load i32, ptr %27, align 4, !tbaa !5
  %29 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.4, i32 noundef %28)
  %indvars.iv.next23 = add nuw nsw i64 %indvars.iv22, 1
  %30 = load i32, ptr %2, align 4, !tbaa !5
  %31 = sext i32 %30 to i64
  %32 = icmp slt i64 %indvars.iv.next23, %31
  br i1 %32, label %.lr.ph16, label %._crit_edge17, !llvm.loop !12

._crit_edge17:                                    ; preds = %.lr.ph16, %._crit_edge13
  %33 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.6)
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %2) #3
  call void @llvm.lifetime.end.p0(i64 400, ptr nonnull %1) #3
  ret i32 0
}

; 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

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 = distinct !{!11, !10}
!12 = distinct !{!12, !10}


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