; LLVM IR from AnneLivia/Competitive-Programming :: Algorithms/Sort/Bubble Sort/main.ll (Z11bubble_sortPii)

; 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"

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_Z11swap_numberPiS_(ptr noundef, ptr 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: mustprogress nounwind uwtable
define dso_local void @_Z11bubble_sortPii(ptr noundef %0, i32 noundef %1) #0 {
  %3 = alloca ptr, align 8
  %4 = alloca i32, align 4
  %5 = alloca i32, align 4
  %6 = alloca i32, align 4
  %7 = alloca i32, align 4
  %8 = alloca i32, align 4
  store ptr %0, ptr %3, align 8, !tbaa !5
  store i32 %1, ptr %4, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %5) #2
  call void @llvm.lifetime.start.p0(i64 4, ptr %6) #2
  store i32 0, ptr %6, align 4, !tbaa !9
  br label %9

9:                                                ; preds = %56, %2
  %10 = load i32, ptr %6, align 4, !tbaa !9
  %11 = load i32, ptr %4, align 4, !tbaa !9
  %12 = sub nsw i32 %11, 1
  %13 = icmp slt i32 %10, %12
  br i1 %13, label %15, label %14

14:                                               ; preds = %9
  store i32 2, ptr %7, align 4
  br label %59

15:                                               ; preds = %9
  store i32 0, ptr %5, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %8) #2
  store i32 0, ptr %8, align 4, !tbaa !9
  br label %16

16:                                               ; preds = %48, %15
  %17 = load i32, ptr %8, align 4, !tbaa !9
  %18 = load i32, ptr %4, align 4, !tbaa !9
  %19 = load i32, ptr %6, align 4, !tbaa !9
  %20 = sub nsw i32 %18, %19
  %21 = sub nsw i32 %20, 1
  %22 = icmp slt i32 %17, %21
  br i1 %22, label %24, label %23

23:                                               ; preds = %16
  store i32 5, ptr %7, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %8) #2
  br label %51

24:                                               ; preds = %16
  %25 = load ptr, ptr %3, align 8, !tbaa !5
  %26 = load i32, ptr %8, align 4, !tbaa !9
  %27 = sext i32 %26 to i64
  %28 = getelementptr inbounds i32, ptr %25, i64 %27
  %29 = load i32, ptr %28, align 4, !tbaa !9
  %30 = load ptr, ptr %3, align 8, !tbaa !5
  %31 = load i32, ptr %8, align 4, !tbaa !9
  %32 = add nsw i32 %31, 1
  %33 = sext i32 %32 to i64
  %34 = getelementptr inbounds i32, ptr %30, i64 %33
  %35 = load i32, ptr %34, align 4, !tbaa !9
  %36 = icmp sgt i32 %29, %35
  br i1 %36, label %37, label %47

37:                                               ; preds = %24
  %38 = load ptr, ptr %3, align 8, !tbaa !5
  %39 = load i32, ptr %8, align 4, !tbaa !9
  %40 = sext i32 %39 to i64
  %41 = getelementptr inbounds i32, ptr %38, i64 %40
  %42 = load ptr, ptr %3, align 8, !tbaa !5
  %43 = load i32, ptr %8, align 4, !tbaa !9
  %44 = add nsw i32 %43, 1
  %45 = sext i32 %44 to i64
  %46 = getelementptr inbounds i32, ptr %42, i64 %45
  call void @_Z11swap_numberPiS_(ptr noundef %41, ptr noundef %46)
  store i32 1, ptr %5, align 4, !tbaa !9
  br label %47

47:                                               ; preds = %37, %24
  br label %48

48:                                               ; preds = %47
  %49 = load i32, ptr %8, align 4, !tbaa !9
  %50 = add nsw i32 %49, 1
  store i32 %50, ptr %8, align 4, !tbaa !9
  br label %16, !llvm.loop !11

51:                                               ; preds = %23
  %52 = load i32, ptr %5, align 4, !tbaa !9
  %53 = icmp ne i32 %52, 0
  br i1 %53, label %55, label %54

54:                                               ; preds = %51
  store i32 2, ptr %7, align 4
  br label %59

55:                                               ; preds = %51
  br label %56

56:                                               ; preds = %55
  %57 = load i32, ptr %6, align 4, !tbaa !9
  %58 = add nsw i32 %57, 1
  store i32 %58, ptr %6, align 4, !tbaa !9
  br label %9, !llvm.loop !13

59:                                               ; preds = %54, %14
  call void @llvm.lifetime.end.p0(i64 4, ptr %6) #2
  br label %60

60:                                               ; preds = %59
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #2
  ret void
}

attributes #0 = { mustprogress 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 = { 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++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"int", !7, i64 0}
!11 = distinct !{!11, !12}
!12 = !{!"llvm.loop.mustprogress"}
!13 = distinct !{!13, !12}


; 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"

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_Z11swap_numberPiS_(ptr noundef, ptr noundef) local_unnamed_addr #0

; Function Attrs: mustprogress nounwind uwtable
define dso_local void @_Z11bubble_sortPii(ptr noundef %0, i32 noundef %1) local_unnamed_addr #0 {
  %3 = add i32 %1, -1
  %4 = icmp sgt i32 %1, 1
  br i1 %4, label %.preheader, label %._crit_edge20

5:                                                ; preds = %._crit_edge
  %6 = add nuw nsw i32 %.01519, 1
  %indvars.iv.next24 = add i32 %indvars.iv23, -1
  %exitcond25.not = icmp eq i32 %6, %3
  br i1 %exitcond25.not, label %._crit_edge20, label %.preheader, !llvm.loop !5

.preheader:                                       ; preds = %2, %5
  %indvars.iv23 = phi i32 [ %indvars.iv.next24, %5 ], [ %3, %2 ]
  %.01519 = phi i32 [ %6, %5 ], [ 0, %2 ]
  %7 = sub nsw i32 %.01519, %1
  %8 = icmp slt i32 %7, -1
  br i1 %8, label %.lr.ph.preheader, label %._crit_edge20

.lr.ph.preheader:                                 ; preds = %.preheader
  %wide.trip.count = zext i32 %indvars.iv23 to i64
  br label %.lr.ph

._crit_edge:                                      ; preds = %15
  %.not = icmp eq i32 %.1, 0
  br i1 %.not, label %._crit_edge20, label %5

.lr.ph:                                           ; preds = %.lr.ph.preheader, %15
  %indvars.iv = phi i64 [ 0, %.lr.ph.preheader ], [ %indvars.iv.next, %15 ]
  %.01617 = phi i32 [ 0, %.lr.ph.preheader ], [ %.1, %15 ]
  %9 = getelementptr inbounds i32, ptr %0, i64 %indvars.iv
  %10 = load i32, ptr %9, align 4, !tbaa !7
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %11 = getelementptr inbounds i32, ptr %0, i64 %indvars.iv.next
  %12 = load i32, ptr %11, align 4, !tbaa !7
  %13 = icmp sgt i32 %10, %12
  br i1 %13, label %14, label %15

14:                                               ; preds = %.lr.ph
  tail call void @_Z11swap_numberPiS_(ptr noundef nonnull %9, ptr noundef nonnull %11)
  br label %15

15:                                               ; preds = %.lr.ph, %14
  %.1 = phi i32 [ 1, %14 ], [ %.01617, %.lr.ph ]
  %exitcond.not = icmp eq i64 %indvars.iv.next, %wide.trip.count
  br i1 %exitcond.not, label %._crit_edge, label %.lr.ph, !llvm.loop !11

._crit_edge20:                                    ; preds = %.preheader, %5, %._crit_edge, %2
  ret void
}

attributes #0 = { mustprogress 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" }

!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 = distinct !{!5, !6}
!6 = !{!"llvm.loop.mustprogress"}
!7 = !{!8, !8, i64 0}
!8 = !{!"int", !9, i64 0}
!9 = !{!"omnipotent char", !10, i64 0}
!10 = !{!"Simple C++ TBAA"}
!11 = distinct !{!11, !6}


; Effective O3 passes: CorrelatedValuePropagationPass,EarlyCSEPass,GVNPass,GlobalOptPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,JumpThreadingPass,LCSSAPass,LICMPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,SROAPass,SimplifyCFGPass,TailCallElimPass