; LLVM IR from facebook/redex :: libresource (Unicode)

; 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
define dso_local i32 @utf32_from_utf8_at(ptr noundef %0, i64 noundef %1, i64 noundef %2, ptr noundef %3) #1 {
  %5 = alloca i32, align 4
  %6 = alloca ptr, align 8
  %7 = alloca i64, align 8
  %8 = alloca i64, align 8
  %9 = alloca ptr, align 8
  %10 = alloca i64, align 8
  %11 = alloca i64, align 8
  %12 = alloca i32, align 4
  store ptr %0, ptr %6, align 8, !tbaa !5
  store i64 %1, ptr %7, align 8, !tbaa !9
  store i64 %2, ptr %8, align 8, !tbaa !9
  store ptr %3, ptr %9, align 8, !tbaa !5
  %13 = load i64, ptr %8, align 8, !tbaa !9
  %14 = load i64, ptr %7, align 8, !tbaa !9
  %15 = icmp uge i64 %13, %14
  br i1 %15, label %16, label %17

16:                                               ; preds = %4
  store i32 -1, ptr %5, align 4
  br label %35

17:                                               ; preds = %4
  call void @llvm.lifetime.start.p0(i64 8, ptr %10) #3
  %18 = load ptr, ptr %9, align 8, !tbaa !5
  %19 = icmp eq ptr %18, null
  br i1 %19, label %20, label %21

20:                                               ; preds = %17
  store ptr %10, ptr %9, align 8, !tbaa !5
  br label %21

21:                                               ; preds = %20, %17
  call void @llvm.lifetime.start.p0(i64 8, ptr %11) #3
  call void @llvm.lifetime.start.p0(i64 4, ptr %12) #3
  %22 = load ptr, ptr %6, align 8, !tbaa !5
  %23 = load i64, ptr %8, align 8, !tbaa !9
  %24 = getelementptr inbounds i8, ptr %22, i64 %23
  %25 = call noundef i32 @_ZL17utf32_at_internalPKcPm(ptr noundef %24, ptr noundef %11)
  store i32 %25, ptr %12, align 4, !tbaa !11
  %26 = load i32, ptr %12, align 4, !tbaa !11
  %27 = icmp sge i32 %26, 0
  br i1 %27, label %28, label %33

28:                                               ; preds = %21
  %29 = load i64, ptr %8, align 8, !tbaa !9
  %30 = load i64, ptr %11, align 8, !tbaa !9
  %31 = add i64 %29, %30
  %32 = load ptr, ptr %9, align 8, !tbaa !5
  store i64 %31, ptr %32, align 8, !tbaa !9
  br label %33

33:                                               ; preds = %28, %21
  %34 = load i32, ptr %12, align 4, !tbaa !11
  store i32 %34, ptr %5, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %12) #3
  call void @llvm.lifetime.end.p0(i64 8, ptr %11) #3
  call void @llvm.lifetime.end.p0(i64 8, ptr %10) #3
  br label %35

35:                                               ; preds = %33, %16
  %36 = load i32, ptr %5, align 4
  ret i32 %36
}

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare hidden noundef i32 @_ZL17utf32_at_internalPKcPm(ptr noundef, ptr noundef) #2

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 = { 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 = { 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, !12, i64 0}
!12 = !{!"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 nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: mustprogress 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 i32 @utf32_from_utf8_at(ptr noundef %0, i64 noundef %1, i64 noundef %2, ptr noundef writeonly %3) local_unnamed_addr #1 {
  %5 = alloca i64, align 8
  %.not = icmp ult i64 %2, %1
  br i1 %.not, label %6, label %13

6:                                                ; preds = %4
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %5) #3
  %7 = getelementptr inbounds i8, ptr %0, i64 %2
  %8 = call noundef i32 @_ZL17utf32_at_internalPKcPm(ptr noundef %7, ptr noundef nonnull %5)
  %9 = icmp slt i32 %8, 0
  %10 = icmp eq ptr %3, null
  %or.cond = or i1 %10, %9
  br i1 %or.cond, label %.cont, label %.else

.else:                                            ; preds = %6
  %11 = load i64, ptr %5, align 8, !tbaa !5
  %12 = add i64 %11, %2
  store i64 %12, ptr %3, align 8, !tbaa !5
  br label %.cont

.cont:                                            ; preds = %.else, %6
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %5) #3
  br label %13

13:                                               ; preds = %4, %.cont
  %.0 = phi i32 [ %8, %.cont ], [ -1, %4 ]
  ret i32 %.0
}

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare hidden noundef i32 @_ZL17utf32_at_internalPKcPm(ptr noundef, ptr noundef) local_unnamed_addr #2

attributes #0 = { mustprogress 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 = { 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 = { 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 = !{!"long", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}


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