; LLVM IR from Mohammed-Shoaib/Coding-Problems :: CodeChef/Beginner/B0071.ll (Z12downloadFileiSt6vectorIiSaIiEES1_)

; 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 @_Z12downloadFileiSt6vectorIiSaIiEES1_(i32 noundef %0, ptr noundef %1, ptr noundef %2) #0 {
  %4 = alloca i32, align 4
  %5 = alloca ptr, align 8
  %6 = alloca ptr, align 8
  %7 = alloca i32, align 4
  %8 = alloca i32, align 4
  %9 = alloca i32, align 4
  store i32 %0, ptr %4, align 4, !tbaa !5
  store ptr %1, ptr %5, align 8, !tbaa !9
  store ptr %2, ptr %6, align 8, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %7) #2
  call void @llvm.lifetime.start.p0(i64 4, ptr %8) #2
  call void @llvm.lifetime.start.p0(i64 4, ptr %9) #2
  store i32 0, ptr %9, align 4, !tbaa !5
  store i32 0, ptr %7, align 4, !tbaa !5
  store i32 0, ptr %8, align 4, !tbaa !5
  br label %10

10:                                               ; preds = %33, %3
  %11 = load i32, ptr %7, align 4, !tbaa !5
  %12 = sext i32 %11 to i64
  %13 = call noundef i64 @_ZNKSt6vectorIiSaIiEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24) %1) #2
  %14 = icmp ult i64 %12, %13
  br i1 %14, label %15, label %36

15:                                               ; preds = %10
  %16 = load i32, ptr %7, align 4, !tbaa !5
  %17 = sext i32 %16 to i64
  %18 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %1, i64 noundef %17) #2
  %19 = load i32, ptr %18, align 4, !tbaa !5
  %20 = load i32, ptr %8, align 4, !tbaa !5
  %21 = add nsw i32 %20, %19
  store i32 %21, ptr %8, align 4, !tbaa !5
  %22 = load i32, ptr %8, align 4, !tbaa !5
  %23 = load i32, ptr %4, align 4, !tbaa !5
  %24 = icmp sgt i32 %22, %23
  br i1 %24, label %25, label %32

25:                                               ; preds = %15
  %26 = load i32, ptr %8, align 4, !tbaa !5
  %27 = load i32, ptr %4, align 4, !tbaa !5
  %28 = sub nsw i32 %26, %27
  %29 = load i32, ptr %7, align 4, !tbaa !5
  %30 = sext i32 %29 to i64
  %31 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %1, i64 noundef %30) #2
  store i32 %28, ptr %31, align 4, !tbaa !5
  br label %36

32:                                               ; preds = %15
  br label %33

33:                                               ; preds = %32
  %34 = load i32, ptr %7, align 4, !tbaa !5
  %35 = add nsw i32 %34, 1
  store i32 %35, ptr %7, align 4, !tbaa !5
  br label %10, !llvm.loop !11

36:                                               ; preds = %25, %10
  br label %37

37:                                               ; preds = %54, %36
  %38 = load i32, ptr %7, align 4, !tbaa !5
  %39 = sext i32 %38 to i64
  %40 = call noundef i64 @_ZNKSt6vectorIiSaIiEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24) %1) #2
  %41 = icmp ult i64 %39, %40
  br i1 %41, label %42, label %57

42:                                               ; preds = %37
  %43 = load i32, ptr %7, align 4, !tbaa !5
  %44 = sext i32 %43 to i64
  %45 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %1, i64 noundef %44) #2
  %46 = load i32, ptr %45, align 4, !tbaa !5
  %47 = load i32, ptr %7, align 4, !tbaa !5
  %48 = sext i32 %47 to i64
  %49 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %2, i64 noundef %48) #2
  %50 = load i32, ptr %49, align 4, !tbaa !5
  %51 = mul nsw i32 %46, %50
  %52 = load i32, ptr %9, align 4, !tbaa !5
  %53 = add nsw i32 %52, %51
  store i32 %53, ptr %9, align 4, !tbaa !5
  br label %54

54:                                               ; preds = %42
  %55 = load i32, ptr %7, align 4, !tbaa !5
  %56 = add nsw i32 %55, 1
  store i32 %56, ptr %7, align 4, !tbaa !5
  br label %37, !llvm.loop !13

57:                                               ; preds = %37
  %58 = load i32, ptr %9, align 4, !tbaa !5
  call void @llvm.lifetime.end.p0(i64 4, ptr %9) #2
  call void @llvm.lifetime.end.p0(i64 4, ptr %8) #2
  call void @llvm.lifetime.end.p0(i64 4, ptr %7) #2
  ret i32 %58
}

; 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 = !{!"int", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"any pointer", !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 @_Z12downloadFileiSt6vectorIiSaIiEES1_(i32 noundef %0, ptr noundef nonnull %1, ptr noundef %2) local_unnamed_addr #0 {
  %4 = tail call noundef i64 @_ZNKSt6vectorIiSaIiEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24) %1) #1
  %.not = icmp eq i64 %4, 0
  br i1 %.not, label %.loopexit, label %.lr.ph

.lr.ph:                                           ; preds = %3, %12
  %indvars.iv = phi i64 [ %indvars.iv.next, %12 ], [ 0, %3 ]
  %.01527 = phi i32 [ %7, %12 ], [ 0, %3 ]
  %5 = tail call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %1, i64 noundef %indvars.iv) #1
  %6 = load i32, ptr %5, align 4, !tbaa !5
  %7 = add nsw i32 %6, %.01527
  %8 = icmp sgt i32 %7, %0
  br i1 %8, label %9, label %12

9:                                                ; preds = %.lr.ph
  %10 = sub nsw i32 %7, %0
  %11 = tail call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %1, i64 noundef %indvars.iv) #1
  store i32 %10, ptr %11, align 4, !tbaa !5
  br label %.loopexit

12:                                               ; preds = %.lr.ph
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %13 = tail call noundef i64 @_ZNKSt6vectorIiSaIiEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24) %1) #1
  %14 = icmp ugt i64 %13, %indvars.iv.next
  br i1 %14, label %.lr.ph, label %.loopexit, !llvm.loop !9

.loopexit:                                        ; preds = %12, %3, %9
  %.01624 = phi i64 [ %indvars.iv, %9 ], [ 0, %3 ], [ %indvars.iv.next, %12 ]
  %15 = and i64 %.01624, 4294967295
  %16 = tail call noundef i64 @_ZNKSt6vectorIiSaIiEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24) %1) #1
  %17 = icmp ugt i64 %16, %15
  br i1 %17, label %.lr.ph30, label %._crit_edge

.lr.ph30:                                         ; preds = %.loopexit, %.lr.ph30
  %indvars.iv39 = phi i64 [ %indvars.iv.next40, %.lr.ph30 ], [ %15, %.loopexit ]
  %.029 = phi i32 [ %23, %.lr.ph30 ], [ 0, %.loopexit ]
  %18 = tail call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %1, i64 noundef %indvars.iv39) #1
  %19 = load i32, ptr %18, align 4, !tbaa !5
  %20 = tail call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %2, i64 noundef %indvars.iv39) #1
  %21 = load i32, ptr %20, align 4, !tbaa !5
  %22 = mul nsw i32 %21, %19
  %23 = add nsw i32 %22, %.029
  %indvars.iv.next40 = add nuw nsw i64 %indvars.iv39, 1
  %24 = tail call noundef i64 @_ZNKSt6vectorIiSaIiEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24) %1) #1
  %25 = icmp ugt i64 %24, %indvars.iv.next40
  br i1 %25, label %.lr.ph30, label %._crit_edge, !llvm.loop !11

._crit_edge:                                      ; preds = %.lr.ph30, %.loopexit
  %.0.lcssa = phi i32 [ 0, %.loopexit ], [ %23, %.lr.ph30 ]
  ret i32 %.0.lcssa
}

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


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