; LLVM IR from IOsonata/IOsonata :: src/utf8cvt.ll/ZNKSt12codecvt_utf85do_inER11 (mbstate_tPKcS3_RS3_PwS5_RS5_)

; 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 uwtable
define dso_local noundef i32 @_ZNKSt12codecvt_utf85do_inER11__mbstate_tPKcS3_RS3_PwS5_RS5_(ptr noundef nonnull align 8 dereferenceable(24) %0, ptr noundef nonnull align 4 dereferenceable(8) %1, ptr noundef %2, ptr noundef %3, ptr noundef nonnull align 8 dereferenceable(8) %4, ptr noundef %5, ptr noundef %6, ptr noundef nonnull align 8 dereferenceable(8) %7) unnamed_addr #0 align 2 {
  %9 = alloca i32, align 4
  %10 = alloca ptr, align 8
  %11 = alloca ptr, align 8
  %12 = alloca ptr, align 8
  %13 = alloca ptr, align 8
  %14 = alloca ptr, align 8
  %15 = alloca ptr, align 8
  %16 = alloca ptr, align 8
  %17 = alloca ptr, align 8
  %18 = alloca i32, align 4
  %19 = alloca i32, align 4
  %20 = alloca i32, align 4
  %21 = alloca i32, align 4
  store ptr %0, ptr %10, align 8, !tbaa !5
  store ptr %1, ptr %11, align 8, !tbaa !5
  store ptr %2, ptr %12, align 8, !tbaa !5
  store ptr %3, ptr %13, align 8, !tbaa !5
  store ptr %4, ptr %14, align 8, !tbaa !5
  store ptr %5, ptr %15, align 8, !tbaa !5
  store ptr %6, ptr %16, align 8, !tbaa !5
  store ptr %7, ptr %17, align 8, !tbaa !5
  %22 = load ptr, ptr %10, align 8
  call void @llvm.lifetime.start.p0(i64 4, ptr %18) #3
  %23 = load ptr, ptr %13, align 8, !tbaa !5
  %24 = load ptr, ptr %12, align 8, !tbaa !5
  %25 = ptrtoint ptr %23 to i64
  %26 = ptrtoint ptr %24 to i64
  %27 = sub i64 %25, %26
  %28 = trunc i64 %27 to i32
  store i32 %28, ptr %18, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %19) #3
  %29 = load ptr, ptr %16, align 8, !tbaa !5
  %30 = load ptr, ptr %15, align 8, !tbaa !5
  %31 = ptrtoint ptr %29 to i64
  %32 = ptrtoint ptr %30 to i64
  %33 = sub i64 %31, %32
  %34 = sdiv exact i64 %33, 4
  %35 = trunc i64 %34 to i32
  store i32 %35, ptr %19, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %20) #3
  %36 = load ptr, ptr %12, align 8, !tbaa !5
  %37 = load ptr, ptr %15, align 8, !tbaa !5
  %38 = call i32 @utf8towcs(ptr noundef %36, ptr noundef %18, ptr noundef %37, ptr noundef %19)
  store i32 %38, ptr %20, align 4, !tbaa !9
  %39 = load ptr, ptr %12, align 8, !tbaa !5
  %40 = load i32, ptr %18, align 4, !tbaa !9
  %41 = sext i32 %40 to i64
  %42 = getelementptr inbounds i8, ptr %39, i64 %41
  %43 = load ptr, ptr %14, align 8, !tbaa !5
  store ptr %42, ptr %43, align 8, !tbaa !5
  %44 = load ptr, ptr %15, align 8, !tbaa !5
  %45 = load i32, ptr %19, align 4, !tbaa !9
  %46 = sext i32 %45 to i64
  %47 = getelementptr inbounds i32, ptr %44, i64 %46
  %48 = load ptr, ptr %17, align 8, !tbaa !5
  store ptr %47, ptr %48, align 8, !tbaa !5
  %49 = load i32, ptr %20, align 4, !tbaa !9
  %50 = icmp slt i32 %49, 0
  br i1 %50, label %51, label %52

51:                                               ; preds = %8
  store i32 2, ptr %9, align 4
  store i32 1, ptr %21, align 4
  br label %58

52:                                               ; preds = %8
  %53 = load i32, ptr %20, align 4, !tbaa !9
  %54 = icmp eq i32 %53, 1
  br i1 %54, label %55, label %56

55:                                               ; preds = %52
  store i32 1, ptr %9, align 4
  store i32 1, ptr %21, align 4
  br label %58

56:                                               ; preds = %52
  br label %57

57:                                               ; preds = %56
  store i32 0, ptr %9, align 4
  store i32 1, ptr %21, align 4
  br label %58

58:                                               ; preds = %57, %55, %51
  call void @llvm.lifetime.end.p0(i64 4, ptr %20) #3
  call void @llvm.lifetime.end.p0(i64 4, ptr %19) #3
  call void @llvm.lifetime.end.p0(i64 4, ptr %18) #3
  %59 = load i32, ptr %9, align 4
  ret i32 %59
}

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

declare i32 @utf8towcs(ptr noundef, ptr noundef, ptr noundef, ptr noundef) #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 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 = { "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 #3 = { 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}


; 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 uwtable
define dso_local noundef range(i32 0, 3) i32 @_ZNKSt12codecvt_utf85do_inER11__mbstate_tPKcS3_RS3_PwS5_RS5_(ptr nocapture noundef nonnull readnone align 8 dereferenceable(24) %0, ptr nocapture noundef nonnull readnone align 4 dereferenceable(8) %1, ptr noundef %2, ptr noundef %3, ptr nocapture noundef nonnull writeonly align 8 dereferenceable(8) %4, ptr noundef %5, ptr noundef %6, ptr nocapture noundef nonnull writeonly align 8 dereferenceable(8) %7) unnamed_addr #0 align 2 {
  %9 = alloca i32, align 4
  %10 = alloca i32, align 4
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %9) #3
  %11 = ptrtoint ptr %3 to i64
  %12 = ptrtoint ptr %2 to i64
  %13 = sub i64 %11, %12
  %14 = trunc i64 %13 to i32
  store i32 %14, ptr %9, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %10) #3
  %15 = ptrtoint ptr %6 to i64
  %16 = ptrtoint ptr %5 to i64
  %17 = sub i64 %15, %16
  %18 = lshr exact i64 %17, 2
  %19 = trunc i64 %18 to i32
  store i32 %19, ptr %10, align 4, !tbaa !5
  %20 = call i32 @utf8towcs(ptr noundef %2, ptr noundef nonnull %9, ptr noundef %5, ptr noundef nonnull %10)
  %21 = load i32, ptr %9, align 4, !tbaa !5
  %22 = sext i32 %21 to i64
  %23 = getelementptr inbounds i8, ptr %2, i64 %22
  store ptr %23, ptr %4, align 8, !tbaa !9
  %24 = load i32, ptr %10, align 4, !tbaa !5
  %25 = sext i32 %24 to i64
  %26 = getelementptr inbounds i32, ptr %5, i64 %25
  store ptr %26, ptr %7, align 8, !tbaa !9
  %27 = icmp slt i32 %20, 0
  %28 = icmp eq i32 %20, 1
  %. = zext i1 %28 to i32
  %.0 = select i1 %27, i32 2, i32 %.
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %10) #3
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %9) #3
  ret i32 %.0
}

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

declare i32 @utf8towcs(ptr noundef, ptr noundef, ptr noundef, ptr noundef) local_unnamed_addr #2

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

attributes #0 = { mustprogress 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 = { mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { "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 #3 = { 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}


; Effective O3 passes: GlobalOptPass,IPSCCPPass,InferFunctionAttrsPass,InstCombinePass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass