; LLVM IR from nickmqb/muon :: bootstrap/mu.ll_Parser (isHexDigit__)

; 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: nounwind uwtable
define dso_local zeroext i8 @Parser__isHexDigit__(i8 noundef signext %0) #1 {
  %2 = alloca i8, align 1
  %3 = alloca i8, align 1
  %4 = alloca i8, align 1
  %5 = alloca i8, align 1
  %6 = alloca i8, align 1
  %7 = alloca i8, align 1
  store i8 %0, ptr %2, align 1, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 1, ptr %3) #2
  %8 = load i8, ptr %2, align 1, !tbaa !5
  %9 = zext i8 %8 to i32
  %10 = icmp sge i32 %9, 65
  %11 = zext i1 %10 to i32
  %12 = trunc i32 %11 to i8
  store i8 %12, ptr %3, align 1, !tbaa !5
  %13 = load i8, ptr %3, align 1, !tbaa !5
  %14 = icmp ne i8 %13, 0
  br i1 %14, label %15, label %21

15:                                               ; preds = %1
  %16 = load i8, ptr %2, align 1, !tbaa !5
  %17 = zext i8 %16 to i32
  %18 = icmp sle i32 %17, 70
  %19 = zext i1 %18 to i32
  %20 = trunc i32 %19 to i8
  store i8 %20, ptr %3, align 1, !tbaa !5
  br label %21

21:                                               ; preds = %15, %1
  call void @llvm.lifetime.start.p0(i64 1, ptr %4) #2
  %22 = load i8, ptr %3, align 1, !tbaa !5
  store i8 %22, ptr %4, align 1, !tbaa !5
  %23 = load i8, ptr %4, align 1, !tbaa !5
  %24 = icmp ne i8 %23, 0
  br i1 %24, label %41, label %25

25:                                               ; preds = %21
  call void @llvm.lifetime.start.p0(i64 1, ptr %5) #2
  %26 = load i8, ptr %2, align 1, !tbaa !5
  %27 = zext i8 %26 to i32
  %28 = icmp sge i32 %27, 97
  %29 = zext i1 %28 to i32
  %30 = trunc i32 %29 to i8
  store i8 %30, ptr %5, align 1, !tbaa !5
  %31 = load i8, ptr %5, align 1, !tbaa !5
  %32 = icmp ne i8 %31, 0
  br i1 %32, label %33, label %39

33:                                               ; preds = %25
  %34 = load i8, ptr %2, align 1, !tbaa !5
  %35 = zext i8 %34 to i32
  %36 = icmp sle i32 %35, 102
  %37 = zext i1 %36 to i32
  %38 = trunc i32 %37 to i8
  store i8 %38, ptr %5, align 1, !tbaa !5
  br label %39

39:                                               ; preds = %33, %25
  %40 = load i8, ptr %5, align 1, !tbaa !5
  store i8 %40, ptr %4, align 1, !tbaa !5
  call void @llvm.lifetime.end.p0(i64 1, ptr %5) #2
  br label %41

41:                                               ; preds = %39, %21
  call void @llvm.lifetime.start.p0(i64 1, ptr %6) #2
  %42 = load i8, ptr %4, align 1, !tbaa !5
  store i8 %42, ptr %6, align 1, !tbaa !5
  %43 = load i8, ptr %6, align 1, !tbaa !5
  %44 = icmp ne i8 %43, 0
  br i1 %44, label %61, label %45

45:                                               ; preds = %41
  call void @llvm.lifetime.start.p0(i64 1, ptr %7) #2
  %46 = load i8, ptr %2, align 1, !tbaa !5
  %47 = zext i8 %46 to i32
  %48 = icmp sge i32 %47, 48
  %49 = zext i1 %48 to i32
  %50 = trunc i32 %49 to i8
  store i8 %50, ptr %7, align 1, !tbaa !5
  %51 = load i8, ptr %7, align 1, !tbaa !5
  %52 = icmp ne i8 %51, 0
  br i1 %52, label %53, label %59

53:                                               ; preds = %45
  %54 = load i8, ptr %2, align 1, !tbaa !5
  %55 = zext i8 %54 to i32
  %56 = icmp sle i32 %55, 57
  %57 = zext i1 %56 to i32
  %58 = trunc i32 %57 to i8
  store i8 %58, ptr %7, align 1, !tbaa !5
  br label %59

59:                                               ; preds = %53, %45
  %60 = load i8, ptr %7, align 1, !tbaa !5
  store i8 %60, ptr %6, align 1, !tbaa !5
  call void @llvm.lifetime.end.p0(i64 1, ptr %7) #2
  br label %61

61:                                               ; preds = %59, %41
  %62 = load i8, ptr %6, align 1, !tbaa !5
  call void @llvm.lifetime.end.p0(i64 1, ptr %6) #2
  call void @llvm.lifetime.end.p0(i64 1, ptr %4) #2
  call void @llvm.lifetime.end.p0(i64 1, ptr %3) #2
  ret i8 %62
}

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { 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 = { 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 = !{!"omnipotent char", !7, i64 0}
!7 = !{!"Simple C/C++ TBAA"}


; 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(none) uwtable
define dso_local zeroext range(i8 0, 2) i8 @Parser__isHexDigit__(i8 noundef signext %0) local_unnamed_addr #0 {
.critedge:
  %1 = and i8 %0, -33
  %2 = add i8 %1, -65
  %or.cond = icmp ult i8 %2, 6
  %3 = add i8 %0, -48
  %narrow = icmp ult i8 %3, 10
  %narrow24 = or i1 %or.cond, %narrow
  %.016 = zext i1 %narrow24 to i8
  ret i8 %.016
}

attributes #0 = { mustprogress nofree norecurse nosync nounwind willreturn memory(none) 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)"}


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