; LLVM IR from ritikbanger/Hacktoberfest2022-DSA :: 06. Sorting (bubble_sort)

; 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 [3 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [20 x i8], align 1
@.str.3 = external hidden unnamed_addr constant [17 x i8], align 1
@.str.4 = external hidden unnamed_addr constant [4 x i8], align 1
@.str.5 = external hidden unnamed_addr constant [15 x i8], align 1

; Function Attrs: nounwind uwtable
declare dso_local void @bubbleSort(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 i32, align 4
  %3 = alloca i32, align 4
  %4 = alloca ptr, align 8
  %5 = alloca i64, align 8
  store i32 0, ptr %1, align 4
  call void @llvm.lifetime.start.p0(i64 4, ptr %2) #4
  call void @llvm.lifetime.start.p0(i64 4, ptr %3) #4
  %6 = call i32 (ptr, ...) @printf(ptr noundef @.str)
  %7 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str.1, ptr noundef %2)
  %8 = load i32, ptr %2, align 4, !tbaa !5
  %9 = zext i32 %8 to i64
  %10 = call ptr @llvm.stacksave.p0()
  store ptr %10, ptr %4, align 8
  %11 = alloca i32, i64 %9, align 16
  store i64 %9, ptr %5, align 8
  %12 = load i32, ptr %2, align 4, !tbaa !5
  %13 = call i32 (ptr, ...) @printf(ptr noundef @.str.2, i32 noundef %12)
  store i32 0, ptr %3, align 4, !tbaa !5
  br label %14

14:                                               ; preds = %23, %0
  %15 = load i32, ptr %3, align 4, !tbaa !5
  %16 = load i32, ptr %2, align 4, !tbaa !5
  %17 = icmp slt i32 %15, %16
  br i1 %17, label %18, label %26

18:                                               ; preds = %14
  %19 = load i32, ptr %3, align 4, !tbaa !5
  %20 = sext i32 %19 to i64
  %21 = getelementptr inbounds i32, ptr %11, i64 %20
  %22 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str.1, ptr noundef %21)
  br label %23

23:                                               ; preds = %18
  %24 = load i32, ptr %3, align 4, !tbaa !5
  %25 = add nsw i32 %24, 1
  store i32 %25, ptr %3, align 4, !tbaa !5
  br label %14, !llvm.loop !9

26:                                               ; preds = %14
  %27 = call i32 (ptr, ...) @printf(ptr noundef @.str.3)
  store i32 0, ptr %3, align 4, !tbaa !5
  br label %28

28:                                               ; preds = %38, %26
  %29 = load i32, ptr %3, align 4, !tbaa !5
  %30 = load i32, ptr %2, align 4, !tbaa !5
  %31 = icmp slt i32 %29, %30
  br i1 %31, label %32, label %41

32:                                               ; preds = %28
  %33 = load i32, ptr %3, align 4, !tbaa !5
  %34 = sext i32 %33 to i64
  %35 = getelementptr inbounds i32, ptr %11, i64 %34
  %36 = load i32, ptr %35, align 4, !tbaa !5
  %37 = call i32 (ptr, ...) @printf(ptr noundef @.str.4, i32 noundef %36)
  br label %38

38:                                               ; preds = %32
  %39 = load i32, ptr %3, align 4, !tbaa !5
  %40 = add nsw i32 %39, 1
  store i32 %40, ptr %3, align 4, !tbaa !5
  br label %28, !llvm.loop !11

41:                                               ; preds = %28
  %42 = load i32, ptr %2, align 4, !tbaa !5
  call void @bubbleSort(ptr noundef %11, i32 noundef %42)
  %43 = call i32 (ptr, ...) @printf(ptr noundef @.str.5)
  store i32 0, ptr %3, align 4, !tbaa !5
  br label %44

44:                                               ; preds = %54, %41
  %45 = load i32, ptr %3, align 4, !tbaa !5
  %46 = load i32, ptr %2, align 4, !tbaa !5
  %47 = icmp slt i32 %45, %46
  br i1 %47, label %48, label %57

48:                                               ; preds = %44
  %49 = load i32, ptr %3, align 4, !tbaa !5
  %50 = sext i32 %49 to i64
  %51 = getelementptr inbounds i32, ptr %11, i64 %50
  %52 = load i32, ptr %51, align 4, !tbaa !5
  %53 = call i32 (ptr, ...) @printf(ptr noundef @.str.4, i32 noundef %52)
  br label %54

54:                                               ; preds = %48
  %55 = load i32, ptr %3, align 4, !tbaa !5
  %56 = add nsw i32 %55, 1
  store i32 %56, ptr %3, align 4, !tbaa !5
  br label %44, !llvm.loop !12

57:                                               ; preds = %44
  store i32 0, ptr %1, align 4
  %58 = load ptr, ptr %4, align 8
  call void @llvm.stackrestore.p0(ptr %58)
  call void @llvm.lifetime.end.p0(i64 4, ptr %3) #4
  call void @llvm.lifetime.end.p0(i64 4, ptr %2) #4
  %59 = load i32, ptr %1, align 4
  ret i32 %59
}

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

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

; Function Attrs: nocallback nofree nosync nounwind willreturn
declare ptr @llvm.stacksave.p0() #3

; Function Attrs: nocallback nofree nosync nounwind willreturn
declare void @llvm.stackrestore.p0(ptr) #3

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 = { nocallback nofree nosync nounwind willreturn }
attributes #4 = { 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 [25 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [3 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [20 x i8], align 1
@.str.3 = external hidden unnamed_addr constant [17 x i8], align 1
@.str.4 = external hidden unnamed_addr constant [4 x i8], align 1
@.str.5 = external hidden unnamed_addr constant [15 x i8], align 1

; Function Attrs: nounwind uwtable
declare dso_local void @bubbleSort(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 i32, align 4
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %1) #4
  %2 = tail call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str)
  %3 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str.1, ptr noundef nonnull %1)
  %4 = load i32, ptr %1, align 4, !tbaa !5
  %5 = zext i32 %4 to i64
  %6 = call ptr @llvm.stacksave.p0()
  %7 = alloca i32, i64 %5, align 16
  %8 = load i32, ptr %1, align 4, !tbaa !5
  %9 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.2, i32 noundef %8)
  %10 = load i32, ptr %1, align 4, !tbaa !5
  %11 = icmp sgt i32 %10, 0
  br i1 %11, label %.lr.ph, label %._crit_edge

.lr.ph:                                           ; preds = %0, %.lr.ph
  %indvars.iv = phi i64 [ %indvars.iv.next, %.lr.ph ], [ 0, %0 ]
  %12 = getelementptr inbounds i32, ptr %7, i64 %indvars.iv
  %13 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str.1, ptr noundef nonnull %12)
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %14 = load i32, ptr %1, align 4, !tbaa !5
  %15 = sext i32 %14 to i64
  %16 = icmp slt i64 %indvars.iv.next, %15
  br i1 %16, label %.lr.ph, label %._crit_edge, !llvm.loop !9

._crit_edge:                                      ; preds = %.lr.ph, %0
  %17 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.3)
  %18 = load i32, ptr %1, align 4, !tbaa !5
  %19 = icmp sgt i32 %18, 0
  br i1 %19, label %.lr.ph14, label %._crit_edge15

.lr.ph14:                                         ; preds = %._crit_edge, %.lr.ph14
  %indvars.iv22 = phi i64 [ %indvars.iv.next23, %.lr.ph14 ], [ 0, %._crit_edge ]
  %20 = getelementptr inbounds i32, ptr %7, i64 %indvars.iv22
  %21 = load i32, ptr %20, align 4, !tbaa !5
  %22 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.4, i32 noundef %21)
  %indvars.iv.next23 = add nuw nsw i64 %indvars.iv22, 1
  %23 = load i32, ptr %1, align 4, !tbaa !5
  %24 = sext i32 %23 to i64
  %25 = icmp slt i64 %indvars.iv.next23, %24
  br i1 %25, label %.lr.ph14, label %._crit_edge15, !llvm.loop !11

._crit_edge15:                                    ; preds = %.lr.ph14, %._crit_edge
  %.lcssa = phi i32 [ %18, %._crit_edge ], [ %23, %.lr.ph14 ]
  call void @bubbleSort(ptr noundef nonnull %7, i32 noundef %.lcssa)
  %26 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.5)
  %27 = load i32, ptr %1, align 4, !tbaa !5
  %28 = icmp sgt i32 %27, 0
  br i1 %28, label %.lr.ph18, label %._crit_edge19

.lr.ph18:                                         ; preds = %._crit_edge15, %.lr.ph18
  %indvars.iv25 = phi i64 [ %indvars.iv.next26, %.lr.ph18 ], [ 0, %._crit_edge15 ]
  %29 = getelementptr inbounds i32, ptr %7, i64 %indvars.iv25
  %30 = load i32, ptr %29, align 4, !tbaa !5
  %31 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.4, i32 noundef %30)
  %indvars.iv.next26 = add nuw nsw i64 %indvars.iv25, 1
  %32 = load i32, ptr %1, align 4, !tbaa !5
  %33 = sext i32 %32 to i64
  %34 = icmp slt i64 %indvars.iv.next26, %33
  br i1 %34, label %.lr.ph18, label %._crit_edge19, !llvm.loop !12

._crit_edge19:                                    ; preds = %.lr.ph18, %._crit_edge15
  call void @llvm.stackrestore.p0(ptr %6)
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %1) #4
  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

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn
declare ptr @llvm.stacksave.p0() #3

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn
declare void @llvm.stackrestore.p0(ptr) #3

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 = { mustprogress nocallback nofree nosync nounwind willreturn }
attributes #4 = { 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,GVNPass,GlobalOptPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,JumpThreadingPass,LCSSAPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass,TailCallElimPass