; LLVM IR from devparthgarg/Data-Structures-and-Algorithms :: 05. Arrays/24 Find Subarray with Given Sum (24b Check Subarray with Given Sum)

; 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 @_Z7maxKSumSt6vectorIiSaIiEEii(ptr noundef %0, i32 noundef %1, i32 noundef %2) #0 {
  %4 = alloca i32, align 4
  %5 = alloca ptr, align 8
  %6 = alloca i32, align 4
  %7 = alloca i32, align 4
  %8 = alloca i32, align 4
  %9 = alloca i32, align 4
  %10 = alloca i32, align 4
  %11 = alloca i32, align 4
  %12 = alloca i32, align 4
  %13 = alloca i32, align 4
  %14 = alloca i32, align 4
  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
  call void @llvm.lifetime.start.p0(i64 4, ptr %8) #2
  %15 = call noundef i64 @_ZNKSt6vectorIiSaIiEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24) %0) #2
  %16 = trunc i64 %15 to i32
  store i32 %16, ptr %8, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %9) #2
  store i32 0, ptr %9, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %10) #2
  store i32 0, ptr %10, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %11) #2
  store i32 0, ptr %11, align 4, !tbaa !9
  br label %17

17:                                               ; preds = %34, %3
  %18 = load i32, ptr %11, align 4, !tbaa !9
  %19 = load i32, ptr %6, align 4, !tbaa !9
  %20 = icmp slt i32 %18, %19
  br i1 %20, label %22, label %21

21:                                               ; preds = %17
  store i32 2, ptr %12, align 4
  br label %37

22:                                               ; preds = %17
  %23 = load i32, ptr %11, align 4, !tbaa !9
  %24 = sext i32 %23 to i64
  %25 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %0, i64 noundef %24) #2
  %26 = load i32, ptr %25, align 4, !tbaa !9
  %27 = load i32, ptr %9, align 4, !tbaa !9
  %28 = add nsw i32 %27, %26
  store i32 %28, ptr %9, align 4, !tbaa !9
  %29 = load i32, ptr %9, align 4, !tbaa !9
  %30 = load i32, ptr %7, align 4, !tbaa !9
  %31 = icmp eq i32 %29, %30
  br i1 %31, label %32, label %33

32:                                               ; preds = %22
  store i32 1, ptr %4, align 4
  store i32 1, ptr %12, align 4
  br label %37

33:                                               ; preds = %22
  br label %34

34:                                               ; preds = %33
  %35 = load i32, ptr %11, align 4, !tbaa !9
  %36 = add nsw i32 %35, 1
  store i32 %36, ptr %11, align 4, !tbaa !9
  br label %17, !llvm.loop !11

37:                                               ; preds = %32, %21
  call void @llvm.lifetime.end.p0(i64 4, ptr %11) #2
  %38 = load i32, ptr %12, align 4
  switch i32 %38, label %69 [
    i32 2, label %39
  ]

39:                                               ; preds = %37
  call void @llvm.lifetime.start.p0(i64 4, ptr %13) #2
  store i32 0, ptr %13, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %14) #2
  %40 = load i32, ptr %6, align 4, !tbaa !9
  store i32 %40, ptr %14, align 4, !tbaa !9
  br label %41

41:                                               ; preds = %61, %39
  %42 = load i32, ptr %14, align 4, !tbaa !9
  %43 = load i32, ptr %8, align 4, !tbaa !9
  %44 = icmp slt i32 %42, %43
  br i1 %44, label %45, label %66

45:                                               ; preds = %41
  %46 = load i32, ptr %9, align 4, !tbaa !9
  %47 = load i32, ptr %13, align 4, !tbaa !9
  %48 = sext i32 %47 to i64
  %49 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %0, i64 noundef %48) #2
  %50 = load i32, ptr %49, align 4, !tbaa !9
  %51 = sub nsw i32 %46, %50
  %52 = load i32, ptr %14, align 4, !tbaa !9
  %53 = sext i32 %52 to i64
  %54 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %0, i64 noundef %53) #2
  %55 = load i32, ptr %54, align 4, !tbaa !9
  %56 = add nsw i32 %51, %55
  store i32 %56, ptr %9, align 4, !tbaa !9
  %57 = load i32, ptr %9, align 4, !tbaa !9
  %58 = load i32, ptr %7, align 4, !tbaa !9
  %59 = icmp eq i32 %57, %58
  br i1 %59, label %60, label %61

60:                                               ; preds = %45
  store i32 1, ptr %4, align 4
  store i32 1, ptr %12, align 4
  br label %68

61:                                               ; preds = %45
  %62 = load i32, ptr %13, align 4, !tbaa !9
  %63 = add nsw i32 %62, 1
  store i32 %63, ptr %13, align 4, !tbaa !9
  %64 = load i32, ptr %14, align 4, !tbaa !9
  %65 = add nsw i32 %64, 1
  store i32 %65, ptr %14, align 4, !tbaa !9
  br label %41, !llvm.loop !13

66:                                               ; preds = %41
  %67 = load i32, ptr %10, align 4, !tbaa !9
  store i32 %67, ptr %4, align 4
  store i32 1, ptr %12, align 4
  br label %68

68:                                               ; preds = %66, %60
  call void @llvm.lifetime.end.p0(i64 4, ptr %14) #2
  call void @llvm.lifetime.end.p0(i64 4, ptr %13) #2
  br label %69

69:                                               ; preds = %68, %37
  call void @llvm.lifetime.end.p0(i64 4, ptr %10) #2
  call void @llvm.lifetime.end.p0(i64 4, ptr %9) #2
  call void @llvm.lifetime.end.p0(i64 4, ptr %8) #2
  %70 = load i32, ptr %4, align 4
  ret i32 %70
}

; 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 range(i32 0, 2) i32 @_Z7maxKSumSt6vectorIiSaIiEEii(ptr noundef nonnull %0, i32 noundef %1, i32 noundef %2) local_unnamed_addr #0 {
  %4 = tail call noundef i64 @_ZNKSt6vectorIiSaIiEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24) %0) #1
  %5 = trunc i64 %4 to i32
  %.not33 = icmp sgt i32 %1, 0
  br i1 %.not33, label %.lr.ph.preheader, label %.preheader

.lr.ph.preheader:                                 ; preds = %3
  %wide.trip.count = zext nneg i32 %1 to i64
  br label %.lr.ph

6:                                                ; preds = %.lr.ph
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %exitcond.not = icmp eq i64 %indvars.iv.next, %wide.trip.count
  br i1 %exitcond.not, label %.preheader, label %.lr.ph, !llvm.loop !5

.preheader:                                       ; preds = %6, %3
  %.024.lcssa = phi i32 [ 0, %3 ], [ %12, %6 ]
  %7 = icmp sgt i32 %5, %1
  br i1 %7, label %.lr.ph39.preheader, label %.thread

.lr.ph39.preheader:                               ; preds = %.preheader
  %8 = sext i32 %1 to i64
  %9 = sub i32 %5, %1
  %wide.trip.count53 = zext i32 %9 to i64
  br label %.lr.ph39

.lr.ph:                                           ; preds = %.lr.ph.preheader, %6
  %indvars.iv = phi i64 [ 0, %.lr.ph.preheader ], [ %indvars.iv.next, %6 ]
  %.02434 = phi i32 [ 0, %.lr.ph.preheader ], [ %12, %6 ]
  %10 = tail call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %0, i64 noundef %indvars.iv) #1
  %11 = load i32, ptr %10, align 4, !tbaa !7
  %12 = add nsw i32 %11, %.02434
  %13 = icmp eq i32 %12, %2
  br i1 %13, label %.thread, label %6

.lr.ph39:                                         ; preds = %.lr.ph39.preheader, %21
  %indvars.iv48 = phi i64 [ 0, %.lr.ph39.preheader ], [ %indvars.iv.next49, %21 ]
  %indvars.iv46 = phi i64 [ %8, %.lr.ph39.preheader ], [ %indvars.iv.next47, %21 ]
  %.22636 = phi i32 [ %.024.lcssa, %.lr.ph39.preheader ], [ %19, %21 ]
  %14 = tail call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %0, i64 noundef %indvars.iv48) #1
  %15 = load i32, ptr %14, align 4, !tbaa !7
  %16 = sub nsw i32 %.22636, %15
  %17 = tail call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %0, i64 noundef %indvars.iv46) #1
  %18 = load i32, ptr %17, align 4, !tbaa !7
  %19 = add nsw i32 %18, %16
  %20 = icmp eq i32 %19, %2
  br i1 %20, label %.thread, label %21

21:                                               ; preds = %.lr.ph39
  %indvars.iv.next49 = add nuw nsw i64 %indvars.iv48, 1
  %indvars.iv.next47 = add nsw i64 %indvars.iv46, 1
  %exitcond54.not = icmp eq i64 %indvars.iv.next49, %wide.trip.count53
  br i1 %exitcond54.not, label %.thread, label %.lr.ph39, !llvm.loop !11

.thread:                                          ; preds = %.lr.ph, %21, %.lr.ph39, %.preheader
  %.2 = phi i32 [ 0, %.preheader ], [ 0, %21 ], [ 1, %.lr.ph39 ], [ 1, %.lr.ph ]
  ret i32 %.2
}

; 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

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 = { 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: CorrelatedValuePropagationPass,GVNPass,GlobalOptPass,IPSCCPPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,JumpThreadingPass,LCSSAPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,ReassociatePass,SROAPass,SimplifyCFGPass,TailCallElimPass