; LLVM IR from facebook/redex :: libresource/String8.ll (ZN7android7String811setPathNameEPKcm)

; 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: 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 uwtable
declare dso_local noundef ptr @_ZN7android7String810lockBufferEm(ptr noundef nonnull align 8 dereferenceable(8), i64 noundef) #1 align 2

; Function Attrs: nocallback nofree nounwind willreturn memory(argmem: readwrite)
declare void @llvm.memcpy.p0.p0.i64(ptr noalias nocapture writeonly, ptr noalias nocapture readonly, i64, i1 immarg) #2

; Function Attrs: mustprogress uwtable
declare dso_local noundef i32 @_ZN7android7String812unlockBufferEm(ptr noundef nonnull align 8 dereferenceable(8), i64 noundef) #1 align 2

; Function Attrs: mustprogress uwtable
define dso_local void @_ZN7android7String811setPathNameEPKcm(ptr noundef nonnull align 8 dereferenceable(8) %0, ptr noundef %1, i64 noundef %2) #1 align 2 {
  %4 = alloca ptr, align 8
  %5 = alloca ptr, align 8
  %6 = alloca i64, align 8
  %7 = alloca ptr, align 8
  store ptr %0, ptr %4, align 8, !tbaa !5
  store ptr %1, ptr %5, align 8, !tbaa !5
  store i64 %2, ptr %6, align 8, !tbaa !9
  %8 = load ptr, ptr %4, align 8
  call void @llvm.lifetime.start.p0(i64 8, ptr %7) #3
  %9 = load i64, ptr %6, align 8, !tbaa !9
  %10 = call noundef ptr @_ZN7android7String810lockBufferEm(ptr noundef nonnull align 8 dereferenceable(8) %8, i64 noundef %9)
  store ptr %10, ptr %7, align 8, !tbaa !5
  %11 = load ptr, ptr %7, align 8, !tbaa !5
  %12 = load ptr, ptr %5, align 8, !tbaa !5
  %13 = load i64, ptr %6, align 8, !tbaa !9
  call void @llvm.memcpy.p0.p0.i64(ptr align 1 %11, ptr align 1 %12, i64 %13, i1 false)
  %14 = load i64, ptr %6, align 8, !tbaa !9
  %15 = icmp ugt i64 %14, 0
  br i1 %15, label %16, label %27

16:                                               ; preds = %3
  %17 = load ptr, ptr %7, align 8, !tbaa !5
  %18 = load i64, ptr %6, align 8, !tbaa !9
  %19 = sub i64 %18, 1
  %20 = getelementptr inbounds i8, ptr %17, i64 %19
  %21 = load i8, ptr %20, align 1, !tbaa !11
  %22 = sext i8 %21 to i32
  %23 = icmp eq i32 %22, 47
  br i1 %23, label %24, label %27

24:                                               ; preds = %16
  %25 = load i64, ptr %6, align 8, !tbaa !9
  %26 = add i64 %25, -1
  store i64 %26, ptr %6, align 8, !tbaa !9
  br label %27

27:                                               ; preds = %24, %16, %3
  %28 = load ptr, ptr %7, align 8, !tbaa !5
  %29 = load i64, ptr %6, align 8, !tbaa !9
  %30 = getelementptr inbounds i8, ptr %28, i64 %29
  store i8 0, ptr %30, align 1, !tbaa !11
  %31 = load i64, ptr %6, align 8, !tbaa !9
  %32 = call noundef i32 @_ZN7android7String812unlockBufferEm(ptr noundef nonnull align 8 dereferenceable(8) %8, i64 noundef %31)
  call void @llvm.lifetime.end.p0(i64 8, ptr %7) #3
  ret void
}

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { 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 #2 = { nocallback nofree nounwind willreturn memory(argmem: readwrite) }
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 = !{!"long", !7, i64 0}
!11 = !{!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: mustprogress uwtable
declare dso_local noundef ptr @_ZN7android7String810lockBufferEm(ptr noundef nonnull align 8 dereferenceable(8), i64 noundef) local_unnamed_addr #0 align 2

; Function Attrs: mustprogress nocallback nofree nounwind willreturn memory(argmem: readwrite)
declare void @llvm.memcpy.p0.p0.i64(ptr noalias nocapture writeonly, ptr noalias nocapture readonly, i64, i1 immarg) #1

; Function Attrs: mustprogress uwtable
declare dso_local noundef i32 @_ZN7android7String812unlockBufferEm(ptr noundef nonnull align 8 dereferenceable(8), i64 noundef) local_unnamed_addr #0 align 2

; Function Attrs: mustprogress uwtable
define dso_local void @_ZN7android7String811setPathNameEPKcm(ptr noundef nonnull align 8 dereferenceable(8) %0, ptr nocapture noundef readonly %1, i64 noundef %2) local_unnamed_addr #0 align 2 {
  %4 = tail call noundef ptr @_ZN7android7String810lockBufferEm(ptr noundef nonnull align 8 dereferenceable(8) %0, i64 noundef %2)
  tail call void @llvm.memcpy.p0.p0.i64(ptr align 1 %4, ptr align 1 %1, i64 %2, i1 false)
  %.not = icmp eq i64 %2, 0
  br i1 %.not, label %11, label %5

5:                                                ; preds = %3
  %6 = getelementptr i8, ptr %4, i64 %2
  %7 = getelementptr i8, ptr %6, i64 -1
  %8 = load i8, ptr %7, align 1, !tbaa !5
  %9 = icmp eq i8 %8, 47
  %10 = sext i1 %9 to i64
  %spec.select = add i64 %10, %2
  br label %11

11:                                               ; preds = %5, %3
  %.0 = phi i64 [ 0, %3 ], [ %spec.select, %5 ]
  %12 = getelementptr inbounds i8, ptr %4, i64 %.0
  store i8 0, ptr %12, align 1, !tbaa !5
  %13 = tail call noundef i32 @_ZN7android7String812unlockBufferEm(ptr noundef nonnull align 8 dereferenceable(8) %0, i64 noundef %.0)
  ret void
}

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 nounwind willreturn memory(argmem: readwrite) }

!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 = !{!"omnipotent char", !7, i64 0}
!7 = !{!"Simple C++ TBAA"}


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