; LLVM IR from yellow-footed-honeyguide/facad :: src (display_utils)

; 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: nounwind uwtable
define dso_local i64 @get_utf8_char_width(ptr noundef %0) #0 {
  %2 = alloca i64, align 8
  %3 = alloca ptr, align 8
  %4 = alloca i8, align 1
  %5 = alloca i32, align 4
  store ptr %0, ptr %3, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 1, ptr %4) #2
  %6 = load ptr, ptr %3, align 8, !tbaa !5
  %7 = load i8, ptr %6, align 1, !tbaa !9
  store i8 %7, ptr %4, align 1, !tbaa !9
  %8 = load i8, ptr %4, align 1, !tbaa !9
  %9 = zext i8 %8 to i32
  %10 = icmp slt i32 %9, 128
  br i1 %10, label %11, label %12

11:                                               ; preds = %1
  store i64 1, ptr %2, align 8
  store i32 1, ptr %5, align 4
  br label %23

12:                                               ; preds = %1
  %13 = load i8, ptr %4, align 1, !tbaa !9
  %14 = zext i8 %13 to i32
  %15 = icmp slt i32 %14, 224
  br i1 %15, label %16, label %17

16:                                               ; preds = %12
  store i64 2, ptr %2, align 8
  store i32 1, ptr %5, align 4
  br label %23

17:                                               ; preds = %12
  %18 = load i8, ptr %4, align 1, !tbaa !9
  %19 = zext i8 %18 to i32
  %20 = icmp slt i32 %19, 240
  br i1 %20, label %21, label %22

21:                                               ; preds = %17
  store i64 3, ptr %2, align 8
  store i32 1, ptr %5, align 4
  br label %23

22:                                               ; preds = %17
  store i64 4, ptr %2, align 8
  store i32 1, ptr %5, align 4
  br label %23

23:                                               ; preds = %22, %21, %16, %11
  call void @llvm.lifetime.end.p0(i64 1, ptr %4) #2
  %24 = load i64, ptr %2, align 8
  ret i64 %24
}

; 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

attributes #0 = { 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 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { 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/C++ TBAA"}
!9 = !{!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 nofree norecurse nosync nounwind willreturn memory(argmem: read) uwtable
define dso_local range(i64 1, 5) i64 @get_utf8_char_width(ptr nocapture noundef readonly %0) local_unnamed_addr #0 {
  %2 = load i8, ptr %0, align 1, !tbaa !5
  %3 = icmp sgt i8 %2, -1
  br i1 %3, label %8, label %4

4:                                                ; preds = %1
  %5 = icmp ult i8 %2, -32
  br i1 %5, label %8, label %6

6:                                                ; preds = %4
  %7 = icmp ult i8 %2, -16
  %. = select i1 %7, i64 3, i64 4
  br label %8

8:                                                ; preds = %6, %4, %1
  %.0 = phi i64 [ 1, %1 ], [ 2, %4 ], [ %., %6 ]
  ret i64 %.0
}

attributes #0 = { mustprogress nofree norecurse nosync nounwind willreturn memory(argmem: read) 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, !6, i64 0}
!6 = !{!"omnipotent char", !7, i64 0}
!7 = !{!"Simple C/C++ TBAA"}


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