; LLVM IR from kala13x/libxutils :: src/data (str)

; 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.XString = type { ptr, i64, i64, i16, i8, i8 }

; 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
declare dso_local i32 @XString_Resize(ptr noundef, i64 noundef) #1

; Function Attrs: nounwind uwtable
define dso_local i32 @XString_Increase(ptr noundef %0, i64 noundef %1) #1 {
  %3 = alloca i32, align 4
  %4 = alloca ptr, align 8
  %5 = alloca i64, align 8
  %6 = alloca i64, align 8
  %7 = alloca i32, align 4
  store ptr %0, ptr %4, align 8, !tbaa !5
  store i64 %1, ptr %5, align 8, !tbaa !9
  %8 = load ptr, ptr %4, align 8, !tbaa !5
  %9 = getelementptr inbounds %struct.XString, ptr %8, i32 0, i32 3
  %10 = load i16, ptr %9, align 8, !tbaa !11
  %11 = sext i16 %10 to i32
  %12 = icmp eq i32 %11, -1
  br i1 %12, label %13, label %14

13:                                               ; preds = %2
  store i32 -1, ptr %3, align 4
  br label %44

14:                                               ; preds = %2
  call void @llvm.lifetime.start.p0(i64 8, ptr %6) #2
  %15 = load ptr, ptr %4, align 8, !tbaa !5
  %16 = getelementptr inbounds %struct.XString, ptr %15, i32 0, i32 1
  %17 = load i64, ptr %16, align 8, !tbaa !14
  %18 = load i64, ptr %5, align 8, !tbaa !9
  %19 = add i64 %17, %18
  store i64 %19, ptr %6, align 8, !tbaa !9
  %20 = load i64, ptr %6, align 8, !tbaa !9
  %21 = load ptr, ptr %4, align 8, !tbaa !5
  %22 = getelementptr inbounds %struct.XString, ptr %21, i32 0, i32 2
  %23 = load i64, ptr %22, align 8, !tbaa !15
  %24 = icmp ule i64 %20, %23
  br i1 %24, label %25, label %30

25:                                               ; preds = %14
  %26 = load ptr, ptr %4, align 8, !tbaa !5
  %27 = getelementptr inbounds %struct.XString, ptr %26, i32 0, i32 2
  %28 = load i64, ptr %27, align 8, !tbaa !15
  %29 = trunc i64 %28 to i32
  store i32 %29, ptr %3, align 4
  store i32 1, ptr %7, align 4
  br label %43

30:                                               ; preds = %14
  %31 = load ptr, ptr %4, align 8, !tbaa !5
  %32 = getelementptr inbounds %struct.XString, ptr %31, i32 0, i32 5
  %33 = load i8, ptr %32, align 1, !tbaa !16
  %34 = icmp ne i8 %33, 0
  br i1 %34, label %35, label %38

35:                                               ; preds = %30
  %36 = load i64, ptr %6, align 8, !tbaa !9
  %37 = mul i64 %36, 2
  store i64 %37, ptr %6, align 8, !tbaa !9
  br label %38

38:                                               ; preds = %35, %30
  br label %39

39:                                               ; preds = %38
  %40 = load ptr, ptr %4, align 8, !tbaa !5
  %41 = load i64, ptr %6, align 8, !tbaa !9
  %42 = call i32 @XString_Resize(ptr noundef %40, i64 noundef %41)
  store i32 %42, ptr %3, align 4
  store i32 1, ptr %7, align 4
  br label %43

43:                                               ; preds = %39, %25
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #2
  br label %44

44:                                               ; preds = %43, %13
  %45 = load i32, ptr %3, align 4
  ret i32 %45
}

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 = !{!"any pointer", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"long", !7, i64 0}
!11 = !{!12, !13, i64 24}
!12 = !{!"XString", !6, i64 0, !10, i64 8, !10, i64 16, !13, i64 24, !7, i64 26, !7, i64 27}
!13 = !{!"short", !7, i64 0}
!14 = !{!12, !10, i64 8}
!15 = !{!12, !10, i64 16}
!16 = !{!12, !7, i64 27}


; 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: nounwind uwtable
declare dso_local i32 @XString_Resize(ptr noundef, i64 noundef) local_unnamed_addr #0

; Function Attrs: nounwind uwtable
define dso_local i32 @XString_Increase(ptr noundef %0, i64 noundef %1) local_unnamed_addr #0 {
  %3 = getelementptr inbounds i8, ptr %0, i64 24
  %4 = load i16, ptr %3, align 8, !tbaa !5
  %5 = icmp eq i16 %4, -1
  br i1 %5, label %19, label %6

6:                                                ; preds = %2
  %7 = getelementptr inbounds i8, ptr %0, i64 8
  %8 = load i64, ptr %7, align 8, !tbaa !12
  %9 = add i64 %8, %1
  %10 = getelementptr inbounds i8, ptr %0, i64 16
  %11 = load i64, ptr %10, align 8, !tbaa !13
  %.not = icmp ugt i64 %9, %11
  br i1 %.not, label %14, label %12

12:                                               ; preds = %6
  %13 = trunc i64 %11 to i32
  br label %19

14:                                               ; preds = %6
  %15 = getelementptr inbounds i8, ptr %0, i64 27
  %16 = load i8, ptr %15, align 1, !tbaa !14
  %.not13 = icmp ne i8 %16, 0
  %17 = zext i1 %.not13 to i64
  %spec.select = shl i64 %9, %17
  %18 = tail call i32 @XString_Resize(ptr noundef nonnull %0, i64 noundef %spec.select)
  br label %19

19:                                               ; preds = %12, %14, %2
  %.1 = phi i32 [ -1, %2 ], [ %13, %12 ], [ %18, %14 ]
  ret i32 %.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" }

!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, !11, i64 24}
!6 = !{!"XString", !7, i64 0, !10, i64 8, !10, i64 16, !11, i64 24, !8, i64 26, !8, i64 27}
!7 = !{!"any pointer", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C/C++ TBAA"}
!10 = !{!"long", !8, i64 0}
!11 = !{!"short", !8, i64 0}
!12 = !{!6, !10, i64 8}
!13 = !{!6, !10, i64 16}
!14 = !{!6, !8, i64 27}


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