; LLVM IR from libtcod/libtcod :: src/libtcod (lex_c)

; 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 willreturn memory(none)
declare ptr @__ctype_toupper_loc() #1

; Function Attrs: nounwind uwtable
define dso_local i32 @TCOD_lex_hextoint(i8 noundef signext %0) #2 {
  %2 = alloca i32, align 4
  %3 = alloca i8, align 1
  %4 = alloca i32, align 4
  %5 = alloca i32, align 4
  %6 = alloca i32, align 4
  %7 = alloca i32, align 4
  store i8 %0, ptr %3, align 1, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %4) #3
  call void @llvm.lifetime.start.p0(i64 4, ptr %5) #3
  %8 = call ptr @__ctype_toupper_loc() #4
  %9 = load ptr, ptr %8, align 8, !tbaa !8
  %10 = load i8, ptr %3, align 1, !tbaa !5
  %11 = sext i8 %10 to i32
  %12 = sext i32 %11 to i64
  %13 = getelementptr inbounds i32, ptr %9, i64 %12
  %14 = load i32, ptr %13, align 4, !tbaa !10
  store i32 %14, ptr %5, align 4, !tbaa !10
  %15 = load i32, ptr %5, align 4, !tbaa !10
  store i32 %15, ptr %6, align 4, !tbaa !10
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #3
  %16 = load i32, ptr %6, align 4, !tbaa !10
  store i32 %16, ptr %4, align 4, !tbaa !10
  %17 = load i32, ptr %4, align 4, !tbaa !10
  %18 = icmp sge i32 %17, 48
  br i1 %18, label %19, label %25

19:                                               ; preds = %1
  %20 = load i32, ptr %4, align 4, !tbaa !10
  %21 = icmp sle i32 %20, 57
  br i1 %21, label %22, label %25

22:                                               ; preds = %19
  %23 = load i32, ptr %4, align 4, !tbaa !10
  %24 = sub nsw i32 %23, 48
  store i32 %24, ptr %2, align 4
  store i32 1, ptr %7, align 4
  br label %29

25:                                               ; preds = %19, %1
  %26 = load i32, ptr %4, align 4, !tbaa !10
  %27 = sub nsw i32 %26, 65
  %28 = add nsw i32 10, %27
  store i32 %28, ptr %2, align 4
  store i32 1, ptr %7, align 4
  br label %29

29:                                               ; preds = %25, %22
  call void @llvm.lifetime.end.p0(i64 4, ptr %4) #3
  %30 = load i32, ptr %2, align 4
  ret i32 %30
}

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { nounwind willreturn memory(none) "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 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 }
attributes #4 = { nounwind willreturn memory(none) }

!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"}
!8 = !{!9, !9, i64 0}
!9 = !{!"any pointer", !6, i64 0}
!10 = !{!11, !11, i64 0}
!11 = !{!"int", !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: mustprogress nofree nosync nounwind willreturn memory(none)
declare ptr @__ctype_toupper_loc() local_unnamed_addr #0

; Function Attrs: mustprogress nofree nosync nounwind willreturn memory(read, inaccessiblemem: none) uwtable
define dso_local range(i32 -2147483638, 2147483593) i32 @TCOD_lex_hextoint(i8 noundef signext %0) local_unnamed_addr #1 {
  %2 = tail call ptr @__ctype_toupper_loc() #2
  %3 = load ptr, ptr %2, align 8, !tbaa !5
  %4 = sext i8 %0 to i64
  %5 = getelementptr inbounds i32, ptr %3, i64 %4
  %6 = load i32, ptr %5, align 4, !tbaa !9
  %7 = add i32 %6, -48
  %or.cond = icmp ult i32 %7, 10
  %8 = add nsw i32 %6, -55
  %.0 = select i1 %or.cond, i32 %7, i32 %8
  ret i32 %.0
}

attributes #0 = { mustprogress nofree nosync nounwind willreturn memory(none) "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 nofree nosync nounwind willreturn memory(read, inaccessiblemem: 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" }
attributes #2 = { nounwind willreturn memory(none) }

!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 = !{!10, !10, i64 0}
!10 = !{!"int", !7, i64 0}


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