; LLVM IR from brpapa/algorithms :: solutions/uri/2566.ll (Z5ehAdjiiPSt6vectorI1TSaIS0_EE)

; 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"

%"class.std::vector" = type { %"struct.std::_Vector_base" }
%"struct.std::_Vector_base" = type { %"struct.std::_Vector_base<T, std::allocator<T>>::_Vector_impl" }
%"struct.std::_Vector_base<T, std::allocator<T>>::_Vector_impl" = type { %"struct.std::_Vector_base<T, std::allocator<T>>::_Vector_impl_data" }
%"struct.std::_Vector_base<T, std::allocator<T>>::_Vector_impl_data" = type { ptr, ptr, ptr }
%struct.T = type { i32, i32 }

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

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

; Function Attrs: mustprogress nounwind uwtable
define dso_local noundef zeroext i1 @_Z5ehAdjiiPSt6vectorI1TSaIS0_EE(i32 noundef %0, i32 noundef %1, ptr noundef %2) #1 {
  %4 = alloca i1, align 1
  %5 = alloca i32, align 4
  %6 = alloca i32, align 4
  %7 = alloca ptr, align 8
  %8 = alloca i32, align 4
  %9 = alloca i32, align 4
  store i32 %0, ptr %5, align 4, !tbaa !5
  store i32 %1, ptr %6, align 4, !tbaa !5
  store ptr %2, ptr %7, align 8, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %8) #2
  store i32 0, ptr %8, align 4, !tbaa !5
  br label %10

10:                                               ; preds = %34, %3
  %11 = load i32, ptr %8, align 4, !tbaa !5
  %12 = sext i32 %11 to i64
  %13 = load ptr, ptr %7, align 8, !tbaa !9
  %14 = load i32, ptr %5, align 4, !tbaa !5
  %15 = sext i32 %14 to i64
  %16 = getelementptr inbounds %"class.std::vector", ptr %13, i64 %15
  %17 = call noundef i64 @_ZNKSt6vectorI1TSaIS0_EE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24) %16) #2
  %18 = icmp ult i64 %12, %17
  br i1 %18, label %20, label %19

19:                                               ; preds = %10
  store i32 2, ptr %9, align 4
  br label %37

20:                                               ; preds = %10
  %21 = load i32, ptr %6, align 4, !tbaa !5
  %22 = load ptr, ptr %7, align 8, !tbaa !9
  %23 = load i32, ptr %5, align 4, !tbaa !5
  %24 = sext i32 %23 to i64
  %25 = getelementptr inbounds %"class.std::vector", ptr %22, i64 %24
  %26 = load i32, ptr %8, align 4, !tbaa !5
  %27 = sext i32 %26 to i64
  %28 = call noundef nonnull align 4 dereferenceable(8) ptr @_ZNSt6vectorI1TSaIS0_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) %25, i64 noundef %27) #2
  %29 = getelementptr inbounds %struct.T, ptr %28, i32 0, i32 0
  %30 = load i32, ptr %29, align 4, !tbaa !11
  %31 = icmp eq i32 %21, %30
  br i1 %31, label %32, label %33

32:                                               ; preds = %20
  store i1 true, ptr %4, align 1
  store i32 1, ptr %9, align 4
  br label %37

33:                                               ; preds = %20
  br label %34

34:                                               ; preds = %33
  %35 = load i32, ptr %8, align 4, !tbaa !5
  %36 = add nsw i32 %35, 1
  store i32 %36, ptr %8, align 4, !tbaa !5
  br label %10, !llvm.loop !13

37:                                               ; preds = %32, %19
  call void @llvm.lifetime.end.p0(i64 4, ptr %8) #2
  %38 = load i32, ptr %9, align 4
  switch i32 %38, label %42 [
    i32 2, label %39
    i32 1, label %40
  ]

39:                                               ; preds = %37
  store i1 false, ptr %4, align 1
  br label %40

40:                                               ; preds = %39, %37
  %41 = load i1, ptr %4, align 1
  ret i1 %41

42:                                               ; preds = %37
  unreachable
}

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef i64 @_ZNKSt6vectorI1TSaIS0_EE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24)) #1 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 4 dereferenceable(8) ptr @_ZNSt6vectorI1TSaIS0_EEixEm(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef) #1 align 2

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { 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 #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 = !{!12, !6, i64 0}
!12 = !{!"_ZTS1T", !6, i64 0, !6, i64 4}
!13 = distinct !{!13, !14}
!14 = !{!"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"

%"class.std::vector" = type { %"struct.std::_Vector_base" }
%"struct.std::_Vector_base" = type { %"struct.std::_Vector_base<T, std::allocator<T>>::_Vector_impl" }
%"struct.std::_Vector_base<T, std::allocator<T>>::_Vector_impl" = type { %"struct.std::_Vector_base<T, std::allocator<T>>::_Vector_impl_data" }
%"struct.std::_Vector_base<T, std::allocator<T>>::_Vector_impl_data" = type { ptr, ptr, ptr }

; Function Attrs: mustprogress nounwind uwtable
define dso_local noundef zeroext i1 @_Z5ehAdjiiPSt6vectorI1TSaIS0_EE(i32 noundef %0, i32 noundef %1, ptr noundef %2) local_unnamed_addr #0 {
  %4 = sext i32 %0 to i64
  %5 = getelementptr inbounds %"class.std::vector", ptr %2, i64 %4
  %6 = tail call noundef i64 @_ZNKSt6vectorI1TSaIS0_EE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24) %5) #1
  %.not12.not = icmp eq i64 %6, 0
  br i1 %.not12.not, label %._crit_edge, label %.lr.ph

7:                                                ; preds = %.lr.ph
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %8 = tail call noundef i64 @_ZNKSt6vectorI1TSaIS0_EE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24) %5) #1
  %.not = icmp ugt i64 %8, %indvars.iv.next
  br i1 %.not, label %.lr.ph, label %._crit_edge, !llvm.loop !5

.lr.ph:                                           ; preds = %3, %7
  %indvars.iv = phi i64 [ %indvars.iv.next, %7 ], [ 0, %3 ]
  %9 = tail call noundef nonnull align 4 dereferenceable(8) ptr @_ZNSt6vectorI1TSaIS0_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) %5, i64 noundef %indvars.iv) #1
  %10 = load i32, ptr %9, align 4, !tbaa !7
  %11 = icmp eq i32 %10, %1
  br i1 %11, label %._crit_edge, label %7

._crit_edge:                                      ; preds = %7, %.lr.ph, %3
  %.not.lcssa = phi i1 [ false, %3 ], [ %11, %.lr.ph ], [ %11, %7 ]
  ret i1 %.not.lcssa
}

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef i64 @_ZNKSt6vectorI1TSaIS0_EE4sizeEv(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(8) ptr @_ZNSt6vectorI1TSaIS0_EEixEm(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, !9, i64 0}
!8 = !{!"_ZTS1T", !9, i64 0, !9, i64 4}
!9 = !{!"int", !10, i64 0}
!10 = !{!"omnipotent char", !11, i64 0}
!11 = !{!"Simple C++ TBAA"}


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