; LLVM IR from jingweizhanghuai/Morn :: src/util (morn_codec)

; 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"

%struct.MArray = type { i32, i16, %union.anon }
%union.anon = type { ptr }

@.str.1 = external hidden unnamed_addr constant [77 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [35 x i8], align 1
@__FUNCTION__.m_Base16Decode = external hidden unnamed_addr constant [15 x i8], align 1

; Function Attrs: nounwind willreturn memory(read)
declare i64 @strlen(ptr noundef) #0

; 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

declare void @ArrayRedefine(ptr noundef, i32 noundef, i32 noundef, ptr noundef) #2

declare void @m_Exception(i32 noundef, i32 noundef, ptr noundef, i32 noundef, ptr noundef, ptr noundef, ...) #2

; Function Attrs: nounwind uwtable
declare dso_local void @_Base16Decode(ptr noundef, i32 noundef, ptr noundef, ptr noundef) #3

; Function Attrs: nounwind uwtable
define dso_local void @m_Base16Decode(ptr noundef %0, i32 noundef %1, ptr noundef %2) #3 {
  %4 = alloca ptr, align 8
  %5 = alloca i32, align 4
  %6 = alloca ptr, align 8
  %7 = alloca i32, align 4
  %8 = alloca i32, align 4
  %9 = alloca i32, align 4
  store ptr %0, ptr %4, align 8, !tbaa !5
  store i32 %1, ptr %5, align 4, !tbaa !9
  store ptr %2, ptr %6, align 8, !tbaa !5
  %10 = load i32, ptr %5, align 4, !tbaa !9
  %11 = icmp slt i32 %10, 0
  br i1 %11, label %12, label %16

12:                                               ; preds = %3
  %13 = load ptr, ptr %4, align 8, !tbaa !5
  %14 = call i64 @strlen(ptr noundef %13) #4
  %15 = trunc i64 %14 to i32
  store i32 %15, ptr %5, align 4, !tbaa !9
  br label %16

16:                                               ; preds = %12, %3
  call void @llvm.lifetime.start.p0(i64 4, ptr %7) #5
  %17 = load i32, ptr %5, align 4, !tbaa !9
  %18 = sdiv i32 %17, 2
  %19 = add nsw i32 %18, 1
  store i32 %19, ptr %7, align 4, !tbaa !9
  br label %20

20:                                               ; preds = %16
  call void @llvm.lifetime.start.p0(i64 4, ptr %8) #5
  store i32 2, ptr %8, align 4, !tbaa !9
  %21 = load i32, ptr %8, align 4, !tbaa !9
  %22 = icmp eq i32 %21, 1
  br i1 %22, label %23, label %25

23:                                               ; preds = %20
  %24 = load ptr, ptr %6, align 8, !tbaa !5
  call void @ArrayRedefine(ptr noundef %24, i32 noundef 1, i32 noundef -1, ptr noundef null)
  br label %48

25:                                               ; preds = %20
  %26 = load i32, ptr %8, align 4, !tbaa !9
  %27 = icmp eq i32 %26, 2
  br i1 %27, label %28, label %31

28:                                               ; preds = %25
  %29 = load ptr, ptr %6, align 8, !tbaa !5
  %30 = load i32, ptr %7, align 4, !tbaa !9
  call void @ArrayRedefine(ptr noundef %29, i32 noundef 1, i32 noundef %30, ptr noundef null)
  br label %47

31:                                               ; preds = %25
  %32 = load i32, ptr %8, align 4, !tbaa !9
  %33 = icmp eq i32 %32, 3
  br i1 %33, label %34, label %37

34:                                               ; preds = %31
  %35 = load ptr, ptr %6, align 8, !tbaa !5
  %36 = load i32, ptr %7, align 4, !tbaa !9
  call void @ArrayRedefine(ptr noundef %35, i32 noundef 1, i32 noundef %36, ptr noundef inttoptr (i64 -1 to ptr))
  br label %46

37:                                               ; preds = %31
  br label %38

38:                                               ; preds = %37
  call void @llvm.lifetime.start.p0(i64 4, ptr %9) #5
  store i32 1, ptr %9, align 4, !tbaa !9
  %39 = load i32, ptr %9, align 4, !tbaa !9
  %40 = icmp ne i32 %39, 0
  br i1 %40, label %41, label %43

41:                                               ; preds = %38
  %42 = load i32, ptr %9, align 4, !tbaa !9
  call void (i32, i32, ptr, i32, ptr, ptr, ...) @m_Exception(i32 noundef %42, i32 noundef -1, ptr noundef @.str.1, i32 noundef 311, ptr noundef @__FUNCTION__.m_Base16Decode, ptr noundef @.str.2)
  br label %43

43:                                               ; preds = %41, %38
  call void @llvm.lifetime.end.p0(i64 4, ptr %9) #5
  br label %44

44:                                               ; preds = %43
  br label %45

45:                                               ; preds = %44
  br label %46

46:                                               ; preds = %45, %34
  br label %47

47:                                               ; preds = %46, %28
  br label %48

48:                                               ; preds = %47, %23
  call void @llvm.lifetime.end.p0(i64 4, ptr %8) #5
  br label %49

49:                                               ; preds = %48
  br label %50

50:                                               ; preds = %49
  %51 = load ptr, ptr %4, align 8, !tbaa !5
  %52 = load i32, ptr %5, align 4, !tbaa !9
  %53 = load ptr, ptr %6, align 8, !tbaa !5
  %54 = getelementptr inbounds %struct.MArray, ptr %53, i32 0, i32 2
  %55 = load ptr, ptr %54, align 8, !tbaa !11
  call void @_Base16Decode(ptr noundef %51, i32 noundef %52, ptr noundef %55, ptr noundef null)
  call void @llvm.lifetime.end.p0(i64 4, ptr %7) #5
  ret void
}

attributes #0 = { nounwind willreturn memory(read) "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 = { "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 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 #4 = { nounwind willreturn memory(read) }
attributes #5 = { 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 = !{!10, !10, i64 0}
!10 = !{!"int", !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 nofree nounwind willreturn memory(argmem: read)
declare i64 @strlen(ptr nocapture noundef) local_unnamed_addr #0

declare void @ArrayRedefine(ptr noundef, i32 noundef, i32 noundef, ptr noundef) local_unnamed_addr #1

; Function Attrs: nounwind uwtable
declare dso_local void @_Base16Decode(ptr noundef, i32 noundef, ptr noundef, ptr noundef) local_unnamed_addr #2

; Function Attrs: nounwind uwtable
define dso_local void @m_Base16Decode(ptr noundef %0, i32 noundef %1, ptr noundef %2) local_unnamed_addr #2 {
  %4 = icmp slt i32 %1, 0
  br i1 %4, label %5, label %8

5:                                                ; preds = %3
  %6 = tail call i64 @strlen(ptr noundef nonnull dereferenceable(1) %0) #3
  %7 = trunc i64 %6 to i32
  br label %8

8:                                                ; preds = %5, %3
  %.0 = phi i32 [ %7, %5 ], [ %1, %3 ]
  %9 = sdiv i32 %.0, 2
  %10 = add nsw i32 %9, 1
  tail call void @ArrayRedefine(ptr noundef %2, i32 noundef 1, i32 noundef %10, ptr noundef null) #4
  %11 = getelementptr inbounds i8, ptr %2, i64 8
  %12 = load ptr, ptr %11, align 8, !tbaa !5
  tail call void @_Base16Decode(ptr noundef %0, i32 noundef %.0, ptr noundef %12, ptr noundef null)
  ret void
}

attributes #0 = { mustprogress nofree nounwind willreturn memory(argmem: read) "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 = { "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 willreturn memory(read) }
attributes #4 = { 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"}


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