; LLVM IR from facebook/redex :: libresource/String8.ll (ZN7android7String85setToEPKc)

; 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: inlinehint mustprogress uwtable
declare hidden noundef ptr @_ZN7androidL14getEmptyStringEv() #0

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

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

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

; Function Attrs: mustprogress uwtable
declare hidden noundef ptr @_ZN7androidL13allocFromUTF8EPKcm(ptr noundef, i64 noundef) #3

; Function Attrs: nounwind willreturn memory(read)
declare i64 @strlen(ptr noundef) #4

declare noundef i32 @_ZNK7android12SharedBuffer7releaseEj(ptr noundef nonnull align 8 dereferenceable(24), i32 noundef) #5

; Function Attrs: mustprogress uwtable
define dso_local noundef i32 @_ZN7android7String85setToEPKc(ptr noundef nonnull align 8 dereferenceable(8) %0, ptr noundef %1) #3 align 2 {
  %3 = alloca i32, align 4
  %4 = alloca ptr, align 8
  %5 = alloca ptr, align 8
  %6 = alloca ptr, align 8
  %7 = alloca i32, align 4
  store ptr %0, ptr %4, align 8, !tbaa !5
  store ptr %1, ptr %5, align 8, !tbaa !5
  %8 = load ptr, ptr %4, align 8
  call void @llvm.lifetime.start.p0(i64 8, ptr %6) #6
  %9 = load ptr, ptr %5, align 8, !tbaa !5
  %10 = load ptr, ptr %5, align 8, !tbaa !5
  %11 = call i64 @strlen(ptr noundef %10) #7
  %12 = call noundef ptr @_ZN7androidL13allocFromUTF8EPKcm(ptr noundef %9, i64 noundef %11)
  store ptr %12, ptr %6, align 8, !tbaa !5
  %13 = getelementptr inbounds %"class.android::String8", ptr %8, i32 0, i32 0
  %14 = load ptr, ptr %13, align 8, !tbaa !9
  %15 = call noundef ptr @_ZN7android12SharedBuffer14bufferFromDataEPKv(ptr noundef %14)
  %16 = call noundef i32 @_ZNK7android12SharedBuffer7releaseEj(ptr noundef nonnull align 8 dereferenceable(24) %15, i32 noundef 0)
  %17 = load ptr, ptr %6, align 8, !tbaa !5
  %18 = getelementptr inbounds %"class.android::String8", ptr %8, i32 0, i32 0
  store ptr %17, ptr %18, align 8, !tbaa !9
  %19 = getelementptr inbounds %"class.android::String8", ptr %8, i32 0, i32 0
  %20 = load ptr, ptr %19, align 8, !tbaa !9
  %21 = icmp ne ptr %20, null
  br i1 %21, label %22, label %23

22:                                               ; preds = %2
  store i32 0, ptr %3, align 4
  store i32 1, ptr %7, align 4
  br label %26

23:                                               ; preds = %2
  %24 = call noundef ptr @_ZN7androidL14getEmptyStringEv()
  %25 = getelementptr inbounds %"class.android::String8", ptr %8, i32 0, i32 0
  store ptr %24, ptr %25, align 8, !tbaa !9
  store i32 -12, ptr %3, align 4
  store i32 1, ptr %7, align 4
  br label %26

26:                                               ; preds = %23, %22
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #6
  %27 = load i32, ptr %3, align 4
  ret i32 %27
}

attributes #0 = { 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 #1 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { 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 #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 = { nounwind willreturn memory(read) "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 = { "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 #6 = { nounwind }
attributes #7 = { nounwind willreturn memory(read) }

!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, !6, i64 0}
!10 = !{!"_ZTSN7android7String8E", !6, 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 uwtable
declare hidden noundef ptr @_ZN7androidL14getEmptyStringEv() local_unnamed_addr #0

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

; Function Attrs: mustprogress uwtable
declare hidden noundef ptr @_ZN7androidL13allocFromUTF8EPKcm(ptr noundef, i64 noundef) local_unnamed_addr #2

; Function Attrs: mustprogress nofree nounwind willreturn memory(argmem: read)
declare i64 @strlen(ptr nocapture noundef) local_unnamed_addr #3

declare noundef i32 @_ZNK7android12SharedBuffer7releaseEj(ptr noundef nonnull align 8 dereferenceable(24), i32 noundef) local_unnamed_addr #4

; Function Attrs: mustprogress uwtable
define dso_local noundef range(i32 -12, 1) i32 @_ZN7android7String85setToEPKc(ptr nocapture noundef nonnull align 8 dereferenceable(8) %0, ptr noundef %1) local_unnamed_addr #2 align 2 {
  %3 = tail call i64 @strlen(ptr noundef nonnull dereferenceable(1) %1) #5
  %4 = tail call noundef ptr @_ZN7androidL13allocFromUTF8EPKcm(ptr noundef %1, i64 noundef %3)
  %5 = load ptr, ptr %0, align 8, !tbaa !5
  %6 = tail call noundef ptr @_ZN7android12SharedBuffer14bufferFromDataEPKv(ptr noundef %5)
  %7 = tail call noundef i32 @_ZNK7android12SharedBuffer7releaseEj(ptr noundef nonnull align 8 dereferenceable(24) %6, i32 noundef 0)
  store ptr %4, ptr %0, align 8, !tbaa !5
  %.not = icmp eq ptr %4, null
  br i1 %.not, label %8, label %10

8:                                                ; preds = %2
  %9 = tail call noundef ptr @_ZN7androidL14getEmptyStringEv()
  store ptr %9, ptr %0, align 8, !tbaa !5
  br label %10

10:                                               ; preds = %2, %8
  %.0 = phi i32 [ -12, %8 ], [ 0, %2 ]
  ret i32 %.0
}

attributes #0 = { 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 #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 = { 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 = { mustprogress nofree nounwind willreturn memory(argmem: read) "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 = { "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 willreturn memory(read) }

!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"}


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