; LLVM IR from MostafaTwfiq/C-DataStructures-And-Algorithms :: Algorithms/Sorting/Sources (HeapSort)

; 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"

@stderr = external global ptr, align 8
@.str = external hidden unnamed_addr constant [31 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [13 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [10 x i8], align 1
@.str.3 = external hidden unnamed_addr constant [42 x i8], align 1
@.str.4 = external hidden unnamed_addr constant [28 x i8], align 1
@.str.5 = external hidden unnamed_addr constant [13 x i8], align 1
@.str.6 = external hidden unnamed_addr constant [13 x i8], align 1

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #0

declare void @swap(ptr noundef, ptr noundef, i32 noundef) #1

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: nounwind uwtable
declare dso_local void @heapDown(ptr noundef, i32 noundef, i32 noundef, i32 noundef, ptr noundef) #2

; Function Attrs: nounwind uwtable
declare dso_local void @buildHeap(ptr noundef, i32 noundef, i32 noundef, ptr noundef) #2

; Function Attrs: nounwind uwtable
define dso_local void @heapSort(ptr noundef %0, i32 noundef %1, i32 noundef %2, ptr noundef %3) #2 {
  %5 = alloca ptr, align 8
  %6 = alloca i32, align 4
  %7 = alloca i32, align 4
  %8 = alloca ptr, align 8
  %9 = alloca ptr, align 8
  store ptr %0, ptr %5, align 8, !tbaa !5
  store i32 %1, ptr %6, align 4, !tbaa !9
  store i32 %2, ptr %7, align 4, !tbaa !9
  store ptr %3, ptr %8, align 8, !tbaa !5
  %10 = load ptr, ptr %5, align 8, !tbaa !5
  %11 = icmp eq ptr %10, null
  br i1 %11, label %12, label %15

12:                                               ; preds = %4
  %13 = load ptr, ptr @stderr, align 8, !tbaa !5
  %14 = call i32 (ptr, ptr, ...) @fprintf(ptr noundef %13, ptr noundef @.str, ptr noundef @.str.1, ptr noundef @.str.2) #5
  call void @exit(i32 noundef -83386157) #6
  unreachable

15:                                               ; preds = %4
  %16 = load ptr, ptr %8, align 8, !tbaa !5
  %17 = icmp eq ptr %16, null
  br i1 %17, label %18, label %21

18:                                               ; preds = %15
  %19 = load ptr, ptr @stderr, align 8, !tbaa !5
  %20 = call i32 (ptr, ptr, ...) @fprintf(ptr noundef %19, ptr noundef @.str.3, ptr noundef @.str.4, ptr noundef @.str.2) #5
  call void @exit(i32 noundef -83384987) #6
  unreachable

21:                                               ; preds = %15
  %22 = load i32, ptr %6, align 4, !tbaa !9
  %23 = icmp slt i32 %22, 0
  br i1 %23, label %24, label %27

24:                                               ; preds = %21
  %25 = load ptr, ptr @stderr, align 8, !tbaa !5
  %26 = call i32 (ptr, ptr, ...) @fprintf(ptr noundef %25, ptr noundef @.str.3, ptr noundef @.str.5, ptr noundef @.str.2) #5
  call void @exit(i32 noundef -83384987) #6
  unreachable

27:                                               ; preds = %21
  %28 = load i32, ptr %7, align 4, !tbaa !9
  %29 = icmp sle i32 %28, 0
  br i1 %29, label %30, label %33

30:                                               ; preds = %27
  %31 = load ptr, ptr @stderr, align 8, !tbaa !5
  %32 = call i32 (ptr, ptr, ...) @fprintf(ptr noundef %31, ptr noundef @.str.3, ptr noundef @.str.6, ptr noundef @.str.2) #5
  call void @exit(i32 noundef -83384987) #6
  unreachable

33:                                               ; preds = %27
  br label %34

34:                                               ; preds = %33
  br label %35

35:                                               ; preds = %34
  br label %36

36:                                               ; preds = %35
  call void @llvm.lifetime.start.p0(i64 8, ptr %9) #5
  %37 = load ptr, ptr %5, align 8, !tbaa !5
  store ptr %37, ptr %9, align 8, !tbaa !5
  %38 = load ptr, ptr %9, align 8, !tbaa !5
  %39 = load i32, ptr %6, align 4, !tbaa !9
  %40 = load i32, ptr %7, align 4, !tbaa !9
  %41 = load ptr, ptr %8, align 8, !tbaa !5
  call void @buildHeap(ptr noundef %38, i32 noundef %39, i32 noundef %40, ptr noundef %41)
  br label %42

42:                                               ; preds = %46, %36
  %43 = load i32, ptr %6, align 4, !tbaa !9
  %44 = add nsw i32 %43, -1
  store i32 %44, ptr %6, align 4, !tbaa !9
  %45 = icmp sgt i32 %43, 0
  br i1 %45, label %46, label %59

46:                                               ; preds = %42
  %47 = load ptr, ptr %9, align 8, !tbaa !5
  %48 = load ptr, ptr %9, align 8, !tbaa !5
  %49 = load i32, ptr %6, align 4, !tbaa !9
  %50 = load i32, ptr %7, align 4, !tbaa !9
  %51 = mul nsw i32 %49, %50
  %52 = sext i32 %51 to i64
  %53 = getelementptr inbounds i8, ptr %48, i64 %52
  %54 = load i32, ptr %7, align 4, !tbaa !9
  call void @swap(ptr noundef %47, ptr noundef %53, i32 noundef %54)
  %55 = load ptr, ptr %9, align 8, !tbaa !5
  %56 = load i32, ptr %6, align 4, !tbaa !9
  %57 = load i32, ptr %7, align 4, !tbaa !9
  %58 = load ptr, ptr %8, align 8, !tbaa !5
  call void @heapDown(ptr noundef %55, i32 noundef %56, i32 noundef 0, i32 noundef %57, ptr noundef %58)
  br label %42, !llvm.loop !11

59:                                               ; preds = %42
  call void @llvm.lifetime.end.p0(i64 8, ptr %9) #5
  ret void
}

; Function Attrs: nounwind
declare i32 @fprintf(ptr noundef, ptr noundef, ...) #3

; Function Attrs: noreturn nounwind
declare void @exit(i32 noundef) #4

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { "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 #2 = { 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 #3 = { 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 #4 = { noreturn 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 #5 = { nounwind }
attributes #6 = { noreturn 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 = !{!"any pointer", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"int", !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"

@stderr = external local_unnamed_addr global ptr, align 8
@.str = external hidden unnamed_addr constant [31 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [13 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [10 x i8], align 1
@.str.3 = external hidden unnamed_addr constant [42 x i8], align 1
@.str.4 = external hidden unnamed_addr constant [28 x i8], align 1
@.str.5 = external hidden unnamed_addr constant [13 x i8], align 1
@.str.6 = external hidden unnamed_addr constant [13 x i8], align 1

declare void @swap(ptr noundef, ptr noundef, i32 noundef) local_unnamed_addr #0

; Function Attrs: nounwind uwtable
declare dso_local void @heapDown(ptr noundef, i32 noundef, i32 noundef, i32 noundef, ptr noundef) local_unnamed_addr #1

; Function Attrs: nounwind uwtable
declare dso_local void @buildHeap(ptr noundef, i32 noundef, i32 noundef, ptr noundef) local_unnamed_addr #1

; Function Attrs: nounwind uwtable
define dso_local void @heapSort(ptr noundef %0, i32 noundef %1, i32 noundef %2, ptr noundef %3) local_unnamed_addr #1 {
  %5 = icmp eq ptr %0, null
  br i1 %5, label %6, label %9

6:                                                ; preds = %4
  %7 = load ptr, ptr @stderr, align 8, !tbaa !5
  %8 = tail call i32 (ptr, ptr, ...) @fprintf(ptr noundef %7, ptr noundef nonnull @.str, ptr noundef nonnull @.str.1, ptr noundef nonnull @.str.2) #4
  tail call void @exit(i32 noundef -83386157) #5
  unreachable

9:                                                ; preds = %4
  %10 = icmp eq ptr %3, null
  br i1 %10, label %11, label %14

11:                                               ; preds = %9
  %12 = load ptr, ptr @stderr, align 8, !tbaa !5
  %13 = tail call i32 (ptr, ptr, ...) @fprintf(ptr noundef %12, ptr noundef nonnull @.str.3, ptr noundef nonnull @.str.4, ptr noundef nonnull @.str.2) #4
  tail call void @exit(i32 noundef -83384987) #5
  unreachable

14:                                               ; preds = %9
  %15 = icmp slt i32 %1, 0
  br i1 %15, label %16, label %19

16:                                               ; preds = %14
  %17 = load ptr, ptr @stderr, align 8, !tbaa !5
  %18 = tail call i32 (ptr, ptr, ...) @fprintf(ptr noundef %17, ptr noundef nonnull @.str.3, ptr noundef nonnull @.str.5, ptr noundef nonnull @.str.2) #4
  tail call void @exit(i32 noundef -83384987) #5
  unreachable

19:                                               ; preds = %14
  %20 = icmp slt i32 %2, 1
  br i1 %20, label %21, label %24

21:                                               ; preds = %19
  %22 = load ptr, ptr @stderr, align 8, !tbaa !5
  %23 = tail call i32 (ptr, ptr, ...) @fprintf(ptr noundef %22, ptr noundef nonnull @.str.3, ptr noundef nonnull @.str.6, ptr noundef nonnull @.str.2) #4
  tail call void @exit(i32 noundef -83384987) #5
  unreachable

24:                                               ; preds = %19
  tail call void @buildHeap(ptr noundef nonnull %0, i32 noundef %1, i32 noundef %2, ptr noundef nonnull %3)
  %.not = icmp eq i32 %1, 0
  br i1 %.not, label %._crit_edge, label %.lr.ph.preheader

.lr.ph.preheader:                                 ; preds = %24
  %25 = zext nneg i32 %1 to i64
  %26 = zext nneg i32 %2 to i64
  br label %.lr.ph

.lr.ph:                                           ; preds = %.lr.ph.preheader, %.lr.ph
  %indvars.iv = phi i64 [ %25, %.lr.ph.preheader ], [ %indvars.iv.next, %.lr.ph ]
  %indvars.iv.next = add nsw i64 %indvars.iv, -1
  %27 = mul nsw i64 %indvars.iv.next, %26
  %28 = getelementptr inbounds i8, ptr %0, i64 %27
  tail call void @swap(ptr noundef nonnull %0, ptr noundef nonnull %28, i32 noundef %2) #6
  %29 = trunc nuw nsw i64 %indvars.iv.next to i32
  tail call void @heapDown(ptr noundef nonnull %0, i32 noundef %29, i32 noundef 0, i32 noundef %2, ptr noundef nonnull %3)
  %30 = icmp ugt i64 %indvars.iv, 1
  br i1 %30, label %.lr.ph, label %._crit_edge, !llvm.loop !9

._crit_edge:                                      ; preds = %.lr.ph, %24
  ret void
}

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

; Function Attrs: noreturn nounwind
declare void @exit(i32 noundef) local_unnamed_addr #3

attributes #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 = { 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 #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 = { noreturn 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 #4 = { cold nounwind }
attributes #5 = { noreturn nounwind }
attributes #6 = { 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 = !{!"any pointer", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}
!9 = distinct !{!9, !10}
!10 = !{!"llvm.loop.mustprogress"}


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