; LLVM IR from TLE-MEC/Hack-CP-DSA :: Hackerrank/Minimum Distances/solution.ll (Z16minimumDistancesSt6vectorIiSaIiEE)

; 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
define dso_local noundef i32 @_Z16minimumDistancesSt6vectorIiSaIiEE(ptr noundef %0) #0 {
  %2 = alloca ptr, align 8
  %3 = alloca i32, align 4
  %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 %2, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %3) #2
  %9 = call noundef i64 @_ZNKSt6vectorIiSaIiEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24) %0) #2
  %10 = trunc i64 %9 to i32
  store i32 %10, ptr %3, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %4) #2
  store i32 0, ptr %4, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %5) #2
  store i32 -1, ptr %5, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %6) #2
  store i32 0, ptr %6, align 4, !tbaa !9
  br label %11

11:                                               ; preds = %60, %1
  %12 = load i32, ptr %6, align 4, !tbaa !9
  %13 = load i32, ptr %3, align 4, !tbaa !9
  %14 = sub nsw i32 %13, 1
  %15 = icmp slt i32 %12, %14
  br i1 %15, label %17, label %16

16:                                               ; preds = %11
  store i32 2, ptr %7, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %6) #2
  br label %63

17:                                               ; preds = %11
  call void @llvm.lifetime.start.p0(i64 4, ptr %8) #2
  %18 = load i32, ptr %6, align 4, !tbaa !9
  %19 = add nsw i32 %18, 1
  store i32 %19, ptr %8, align 4, !tbaa !9
  br label %20

20:                                               ; preds = %56, %17
  %21 = load i32, ptr %8, align 4, !tbaa !9
  %22 = load i32, ptr %3, align 4, !tbaa !9
  %23 = icmp slt i32 %21, %22
  br i1 %23, label %25, label %24

24:                                               ; preds = %20
  store i32 5, ptr %7, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %8) #2
  br label %59

25:                                               ; preds = %20
  %26 = load i32, ptr %6, align 4, !tbaa !9
  %27 = sext i32 %26 to i64
  %28 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %0, i64 noundef %27) #2
  %29 = load i32, ptr %28, align 4, !tbaa !9
  %30 = load i32, ptr %8, align 4, !tbaa !9
  %31 = sext i32 %30 to i64
  %32 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %0, i64 noundef %31) #2
  %33 = load i32, ptr %32, align 4, !tbaa !9
  %34 = icmp eq i32 %29, %33
  br i1 %34, label %35, label %55

35:                                               ; preds = %25
  %36 = load i32, ptr %8, align 4, !tbaa !9
  %37 = load i32, ptr %6, align 4, !tbaa !9
  %38 = sub nsw i32 %36, %37
  store i32 %38, ptr %4, align 4, !tbaa !9
  %39 = load i32, ptr %4, align 4, !tbaa !9
  %40 = load i32, ptr %5, align 4, !tbaa !9
  %41 = icmp sgt i32 %39, %40
  br i1 %41, label %42, label %47

42:                                               ; preds = %35
  %43 = load i32, ptr %5, align 4, !tbaa !9
  %44 = icmp eq i32 %43, -1
  br i1 %44, label %45, label %47

45:                                               ; preds = %42
  %46 = load i32, ptr %4, align 4, !tbaa !9
  store i32 %46, ptr %5, align 4, !tbaa !9
  br label %54

47:                                               ; preds = %42, %35
  %48 = load i32, ptr %4, align 4, !tbaa !9
  %49 = load i32, ptr %5, align 4, !tbaa !9
  %50 = icmp slt i32 %48, %49
  br i1 %50, label %51, label %53

51:                                               ; preds = %47
  %52 = load i32, ptr %4, align 4, !tbaa !9
  store i32 %52, ptr %5, align 4, !tbaa !9
  br label %53

53:                                               ; preds = %51, %47
  br label %54

54:                                               ; preds = %53, %45
  br label %55

55:                                               ; preds = %54, %25
  br label %56

56:                                               ; preds = %55
  %57 = load i32, ptr %8, align 4, !tbaa !9
  %58 = add nsw i32 %57, 1
  store i32 %58, ptr %8, align 4, !tbaa !9
  br label %20, !llvm.loop !11

59:                                               ; preds = %24
  br label %60

60:                                               ; preds = %59
  %61 = load i32, ptr %6, align 4, !tbaa !9
  %62 = add nsw i32 %61, 1
  store i32 %62, ptr %6, align 4, !tbaa !9
  br label %11, !llvm.loop !13

63:                                               ; preds = %16
  %64 = load i32, ptr %5, align 4, !tbaa !9
  store i32 1, ptr %7, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #2
  call void @llvm.lifetime.end.p0(i64 4, ptr %4) #2
  call void @llvm.lifetime.end.p0(i64 4, ptr %3) #2
  ret i32 %64
}

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

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef i64 @_ZNKSt6vectorIiSaIiEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24)) #0 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef) #0 align 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 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
define dso_local noundef i32 @_Z16minimumDistancesSt6vectorIiSaIiEE(ptr noundef nonnull %0) local_unnamed_addr #0 {
  %2 = tail call noundef i64 @_ZNKSt6vectorIiSaIiEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24) %0) #2
  %3 = trunc i64 %2 to i32
  %4 = icmp sgt i32 %3, 1
  br i1 %4, label %.lr.ph28.preheader, label %._crit_edge

.lr.ph28.preheader:                               ; preds = %1
  %5 = add i64 %2, 4294967295
  %wide.trip.count36 = and i64 %5, 4294967295
  %wide.trip.count = and i64 %2, 2147483647
  br label %.lr.ph

.loopexit:                                        ; preds = %17
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %exitcond37.not = icmp eq i64 %indvars.iv.next34, %wide.trip.count36
  br i1 %exitcond37.not, label %._crit_edge, label %.lr.ph, !llvm.loop !5

._crit_edge:                                      ; preds = %.loopexit, %1
  %.021.lcssa = phi i32 [ -1, %1 ], [ %.2, %.loopexit ]
  ret i32 %.021.lcssa

.lr.ph:                                           ; preds = %.loopexit, %.lr.ph28.preheader
  %indvars.iv33 = phi i64 [ 0, %.lr.ph28.preheader ], [ %indvars.iv.next34, %.loopexit ]
  %indvars.iv = phi i64 [ 1, %.lr.ph28.preheader ], [ %indvars.iv.next, %.loopexit ]
  %.02126 = phi i32 [ -1, %.lr.ph28.preheader ], [ %.2, %.loopexit ]
  %indvars.iv.next34 = add nuw nsw i64 %indvars.iv33, 1
  br label %6

6:                                                ; preds = %.lr.ph, %17
  %indvars.iv30 = phi i64 [ %indvars.iv, %.lr.ph ], [ %indvars.iv.next31, %17 ]
  %.124 = phi i32 [ %.02126, %.lr.ph ], [ %.2, %17 ]
  %7 = tail call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %0, i64 noundef %indvars.iv33) #2
  %8 = load i32, ptr %7, align 4, !tbaa !7
  %9 = tail call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %0, i64 noundef %indvars.iv30) #2
  %10 = load i32, ptr %9, align 4, !tbaa !7
  %11 = icmp eq i32 %8, %10
  br i1 %11, label %12, label %17

12:                                               ; preds = %6
  %13 = sub nuw nsw i64 %indvars.iv30, %indvars.iv33
  %14 = icmp eq i32 %.124, -1
  %15 = trunc nsw i64 %13 to i32
  br i1 %14, label %17, label %16

16:                                               ; preds = %12
  %spec.select = tail call i32 @llvm.smin.i32(i32 %15, i32 %.124)
  br label %17

17:                                               ; preds = %16, %12, %6
  %.2 = phi i32 [ %.124, %6 ], [ %15, %12 ], [ %spec.select, %16 ]
  %indvars.iv.next31 = add nuw nsw i64 %indvars.iv30, 1
  %exitcond.not = icmp eq i64 %indvars.iv.next31, %wide.trip.count
  br i1 %exitcond.not, label %.loopexit, label %6, !llvm.loop !11
}

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef i64 @_ZNKSt6vectorIiSaIiEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24)) local_unnamed_addr #0 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef) local_unnamed_addr #0 align 2

; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)
declare i32 @llvm.smin.i32(i32, i32) #1

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 speculatable willreturn memory(none) }
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 = 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: EarlyCSEPass,GVNPass,GlobalOptPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,JumpThreadingPass,LCSSAPass,LICMPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,SCCPPass,SROAPass,SimplifyCFGPass,TailCallElimPass