; LLVM IR from ros2/rcutils :: src (char_array)

; 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.rcutils_char_array_s = type { ptr, i8, i64, i64, %struct.rcutils_allocator_s }
%struct.rcutils_allocator_s = type { ptr, ptr, ptr, ptr, ptr }

@.str = external hidden unnamed_addr constant [28 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [63 x i8], align 1

declare void @rcutils_set_error_state(ptr noundef, ptr noundef, i64 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

; Function Attrs: nounwind uwtable
declare dso_local i32 @rcutils_char_array_resize(ptr noundef, i64 noundef) #2

; Function Attrs: nounwind uwtable
define dso_local i32 @rcutils_char_array_expand_as_needed(ptr noundef %0, i64 noundef %1) #2 {
  %3 = alloca i32, align 4
  %4 = alloca ptr, align 8
  %5 = alloca i64, align 8
  %6 = alloca i64, align 8
  store ptr %0, ptr %4, align 8, !tbaa !5
  store i64 %1, ptr %5, align 8, !tbaa !9
  br label %7

7:                                                ; preds = %2
  %8 = load ptr, ptr %4, align 8, !tbaa !5
  %9 = icmp eq ptr null, %8
  br i1 %9, label %10, label %13

10:                                               ; preds = %7
  br label %11

11:                                               ; preds = %10
  call void @rcutils_set_error_state(ptr noundef @.str, ptr noundef @.str.1, i64 noundef 130)
  br label %12

12:                                               ; preds = %11
  store i32 2, ptr %3, align 4
  br label %39

13:                                               ; preds = %7
  br label %14

14:                                               ; preds = %13
  %15 = load i64, ptr %5, align 8, !tbaa !9
  %16 = load ptr, ptr %4, align 8, !tbaa !5
  %17 = getelementptr inbounds %struct.rcutils_char_array_s, ptr %16, i32 0, i32 3
  %18 = load i64, ptr %17, align 8, !tbaa !11
  %19 = icmp ule i64 %15, %18
  br i1 %19, label %20, label %21

20:                                               ; preds = %14
  store i32 0, ptr %3, align 4
  br label %39

21:                                               ; preds = %14
  call void @llvm.lifetime.start.p0(i64 8, ptr %6) #3
  %22 = load ptr, ptr %4, align 8, !tbaa !5
  %23 = getelementptr inbounds %struct.rcutils_char_array_s, ptr %22, i32 0, i32 3
  %24 = load i64, ptr %23, align 8, !tbaa !11
  %25 = load ptr, ptr %4, align 8, !tbaa !5
  %26 = getelementptr inbounds %struct.rcutils_char_array_s, ptr %25, i32 0, i32 3
  %27 = load i64, ptr %26, align 8, !tbaa !11
  %28 = lshr i64 %27, 1
  %29 = add i64 %24, %28
  store i64 %29, ptr %6, align 8, !tbaa !9
  %30 = load i64, ptr %5, align 8, !tbaa !9
  %31 = load i64, ptr %6, align 8, !tbaa !9
  %32 = icmp ult i64 %30, %31
  br i1 %32, label %33, label %35

33:                                               ; preds = %21
  %34 = load i64, ptr %6, align 8, !tbaa !9
  store i64 %34, ptr %5, align 8, !tbaa !9
  br label %35

35:                                               ; preds = %33, %21
  %36 = load ptr, ptr %4, align 8, !tbaa !5
  %37 = load i64, ptr %5, align 8, !tbaa !9
  %38 = call i32 @rcutils_char_array_resize(ptr noundef %36, i64 noundef %37)
  store i32 %38, ptr %3, align 4
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #3
  br label %39

39:                                               ; preds = %35, %20, %12
  %40 = load i32, ptr %3, align 4
  ret i32 %40
}

attributes #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 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 }

!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, !10, i64 24}
!12 = !{!"rcutils_char_array_s", !6, i64 0, !13, i64 8, !10, i64 16, !10, i64 24, !14, i64 32}
!13 = !{!"_Bool", !7, i64 0}
!14 = !{!"rcutils_allocator_s", !6, i64 0, !6, i64 8, !6, i64 16, !6, i64 24, !6, i64 32}


; 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"

@.str = external hidden unnamed_addr constant [28 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [63 x i8], align 1

declare void @rcutils_set_error_state(ptr noundef, ptr noundef, i64 noundef) local_unnamed_addr #0

; Function Attrs: nounwind uwtable
declare dso_local i32 @rcutils_char_array_resize(ptr noundef, i64 noundef) local_unnamed_addr #1

; Function Attrs: nounwind uwtable
define dso_local i32 @rcutils_char_array_expand_as_needed(ptr noundef %0, i64 noundef %1) local_unnamed_addr #1 {
  %3 = icmp eq ptr %0, null
  br i1 %3, label %4, label %5

4:                                                ; preds = %2
  tail call void @rcutils_set_error_state(ptr noundef nonnull @.str, ptr noundef nonnull @.str.1, i64 noundef 130) #3
  br label %12

5:                                                ; preds = %2
  %6 = getelementptr inbounds i8, ptr %0, i64 24
  %7 = load i64, ptr %6, align 8, !tbaa !5
  %.not = icmp ult i64 %7, %1
  br i1 %.not, label %8, label %12

8:                                                ; preds = %5
  %9 = lshr i64 %7, 1
  %10 = add i64 %9, %7
  %spec.select = tail call i64 @llvm.umax.i64(i64 %10, i64 %1)
  %11 = tail call i32 @rcutils_char_array_resize(ptr noundef nonnull %0, i64 noundef %spec.select)
  br label %12

12:                                               ; preds = %5, %8, %4
  %.0 = phi i32 [ 2, %4 ], [ %11, %8 ], [ 0, %5 ]
  ret i32 %.0
}

; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)
declare i64 @llvm.umax.i64(i64, i64) #2

attributes #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 = { 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 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }
attributes #3 = { 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, !11, i64 24}
!6 = !{!"rcutils_char_array_s", !7, i64 0, !10, i64 8, !11, i64 16, !11, i64 24, !12, i64 32}
!7 = !{!"any pointer", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C/C++ TBAA"}
!10 = !{!"_Bool", !8, i64 0}
!11 = !{!"long", !8, i64 0}
!12 = !{!"rcutils_allocator_s", !7, i64 0, !7, i64 8, !7, i64 16, !7, i64 24, !7, i64 32}


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