; LLVM IR from facebook/redex :: libresource/String8.ll (ZN7android7String812unlockBufferEm)

; 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.android::String8" = type { ptr }

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

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local noundef ptr @_ZN7android12SharedBuffer4dataEv(ptr noundef nonnull align 8 dereferenceable(24)) #1 align 2

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

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local noundef ptr @_ZN7android12SharedBuffer14bufferFromDataEPKv(ptr noundef) #1 align 2

declare noundef ptr @_ZNK7android12SharedBuffer10editResizeEm(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef) #2

; Function Attrs: mustprogress uwtable
define dso_local noundef i32 @_ZN7android7String812unlockBufferEm(ptr noundef nonnull align 8 dereferenceable(8) %0, i64 noundef %1) #3 align 2 {
  %3 = alloca i32, align 4
  %4 = alloca ptr, align 8
  %5 = alloca i64, align 8
  %6 = alloca ptr, align 8
  %7 = alloca i32, align 4
  %8 = alloca ptr, align 8
  store ptr %0, ptr %4, align 8, !tbaa !5
  store i64 %1, ptr %5, align 8, !tbaa !9
  %9 = load ptr, ptr %4, align 8
  %10 = load i64, ptr %5, align 8, !tbaa !9
  %11 = call noundef i64 @_ZNK7android7String84sizeEv(ptr noundef nonnull align 8 dereferenceable(8) %9)
  %12 = icmp ne i64 %10, %11
  br i1 %12, label %13, label %34

13:                                               ; preds = %2
  call void @llvm.lifetime.start.p0(i64 8, ptr %6) #5
  %14 = getelementptr inbounds %"class.android::String8", ptr %9, i32 0, i32 0
  %15 = load ptr, ptr %14, align 8, !tbaa !11
  %16 = call noundef ptr @_ZN7android12SharedBuffer14bufferFromDataEPKv(ptr noundef %15)
  %17 = load i64, ptr %5, align 8, !tbaa !9
  %18 = add i64 %17, 1
  %19 = call noundef ptr @_ZNK7android12SharedBuffer10editResizeEm(ptr noundef nonnull align 8 dereferenceable(24) %16, i64 noundef %18)
  store ptr %19, ptr %6, align 8, !tbaa !5
  %20 = load ptr, ptr %6, align 8, !tbaa !5
  %21 = icmp ne ptr %20, null
  br i1 %21, label %23, label %22

22:                                               ; preds = %13
  store i32 -12, ptr %3, align 4
  store i32 1, ptr %7, align 4
  br label %31

23:                                               ; preds = %13
  call void @llvm.lifetime.start.p0(i64 8, ptr %8) #5
  %24 = load ptr, ptr %6, align 8, !tbaa !5
  %25 = call noundef ptr @_ZN7android12SharedBuffer4dataEv(ptr noundef nonnull align 8 dereferenceable(24) %24)
  store ptr %25, ptr %8, align 8, !tbaa !5
  %26 = load ptr, ptr %8, align 8, !tbaa !5
  %27 = load i64, ptr %5, align 8, !tbaa !9
  %28 = getelementptr inbounds i8, ptr %26, i64 %27
  store i8 0, ptr %28, align 1, !tbaa !13
  %29 = load ptr, ptr %8, align 8, !tbaa !5
  %30 = getelementptr inbounds %"class.android::String8", ptr %9, i32 0, i32 0
  store ptr %29, ptr %30, align 8, !tbaa !11
  call void @llvm.lifetime.end.p0(i64 8, ptr %8) #5
  store i32 0, ptr %7, align 4
  br label %31

31:                                               ; preds = %23, %22
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #5
  %32 = load i32, ptr %7, align 4
  switch i32 %32, label %37 [
    i32 0, label %33
    i32 1, label %35
  ]

33:                                               ; preds = %31
  br label %34

34:                                               ; preds = %33, %2
  store i32 0, ptr %3, align 4
  br label %35

35:                                               ; preds = %34, %31
  %36 = load i32, ptr %3, align 4
  ret i32 %36

37:                                               ; preds = %31
  unreachable
}

; Function Attrs: inlinehint mustprogress uwtable
declare dso_local noundef i64 @_ZNK7android7String84sizeEv(ptr noundef nonnull align 8 dereferenceable(8)) #4 align 2

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { inlinehint 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 = { "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 = { 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 #4 = { inlinehint 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 #5 = { 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 = !{!"long", !7, i64 0}
!11 = !{!12, !6, i64 0}
!12 = !{!"_ZTSN7android7String8E", !6, i64 0}
!13 = !{!7, !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: inlinehint mustprogress nounwind uwtable
declare dso_local noundef ptr @_ZN7android12SharedBuffer4dataEv(ptr noundef nonnull align 8 dereferenceable(24)) local_unnamed_addr #0 align 2

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local noundef ptr @_ZN7android12SharedBuffer14bufferFromDataEPKv(ptr noundef) local_unnamed_addr #0 align 2

declare noundef ptr @_ZNK7android12SharedBuffer10editResizeEm(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef) local_unnamed_addr #1

; Function Attrs: mustprogress uwtable
define dso_local noundef range(i32 -12, 1) i32 @_ZN7android7String812unlockBufferEm(ptr noundef nonnull align 8 dereferenceable(8) %0, i64 noundef %1) local_unnamed_addr #2 align 2 {
  %3 = tail call noundef i64 @_ZNK7android7String84sizeEv(ptr noundef nonnull align 8 dereferenceable(8) %0)
  %.not = icmp eq i64 %3, %1
  br i1 %.not, label %11, label %4

4:                                                ; preds = %2
  %5 = load ptr, ptr %0, align 8, !tbaa !5
  %6 = tail call noundef ptr @_ZN7android12SharedBuffer14bufferFromDataEPKv(ptr noundef %5)
  %7 = add i64 %1, 1
  %8 = tail call noundef ptr @_ZNK7android12SharedBuffer10editResizeEm(ptr noundef nonnull align 8 dereferenceable(24) %6, i64 noundef %7)
  %.not11 = icmp eq ptr %8, null
  br i1 %.not11, label %11, label %.thread

.thread:                                          ; preds = %4
  %9 = tail call noundef ptr @_ZN7android12SharedBuffer4dataEv(ptr noundef nonnull align 8 dereferenceable(24) %8)
  %10 = getelementptr inbounds i8, ptr %9, i64 %1
  store i8 0, ptr %10, align 1, !tbaa !10
  store ptr %9, ptr %0, align 8, !tbaa !5
  br label %11

11:                                               ; preds = %2, %.thread, %4
  %.1 = phi i32 [ -12, %4 ], [ 0, %.thread ], [ 0, %2 ]
  ret i32 %.1
}

; Function Attrs: inlinehint mustprogress uwtable
declare dso_local noundef i64 @_ZNK7android7String84sizeEv(ptr noundef nonnull align 8 dereferenceable(8)) local_unnamed_addr #3 align 2

attributes #0 = { inlinehint 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 = { "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 = { 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 #3 = { inlinehint 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" }

!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, !7, i64 0}
!6 = !{!"_ZTSN7android7String8E", !7, i64 0}
!7 = !{!"any pointer", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C++ TBAA"}
!10 = !{!8, !8, i64 0}


; Effective O3 passes: EarlyCSEPass,GlobalOptPass,IPSCCPPass,InferFunctionAttrsPass,InstCombinePass,JumpThreadingPass,SROAPass,SimplifyCFGPass,TailCallElimPass