; LLVM IR from ros2/rcutils :: src (string_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"

; 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(read)
declare i32 @strcmp(ptr noundef, ptr noundef) #1

; Function Attrs: nounwind uwtable
define dso_local i32 @rcutils_string_array_sort_compare(ptr noundef %0, ptr noundef %1) #2 {
  %3 = alloca i32, align 4
  %4 = alloca ptr, align 8
  %5 = alloca ptr, align 8
  %6 = alloca ptr, align 8
  %7 = alloca ptr, align 8
  %8 = alloca i32, align 4
  store ptr %0, ptr %4, align 8, !tbaa !5
  store ptr %1, ptr %5, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %6) #3
  %9 = load ptr, ptr %4, align 8, !tbaa !5
  %10 = load ptr, ptr %9, align 8, !tbaa !5
  store ptr %10, ptr %6, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %7) #3
  %11 = load ptr, ptr %5, align 8, !tbaa !5
  %12 = load ptr, ptr %11, align 8, !tbaa !5
  store ptr %12, ptr %7, align 8, !tbaa !5
  %13 = load ptr, ptr %6, align 8, !tbaa !5
  %14 = icmp eq ptr null, %13
  br i1 %14, label %15, label %20

15:                                               ; preds = %2
  %16 = load ptr, ptr %7, align 8, !tbaa !5
  %17 = icmp eq ptr null, %16
  %18 = zext i1 %17 to i64
  %19 = select i1 %17, i32 0, i32 1
  store i32 %19, ptr %3, align 4
  store i32 1, ptr %8, align 4
  br label %29

20:                                               ; preds = %2
  %21 = load ptr, ptr %7, align 8, !tbaa !5
  %22 = icmp eq ptr null, %21
  br i1 %22, label %23, label %24

23:                                               ; preds = %20
  store i32 -1, ptr %3, align 4
  store i32 1, ptr %8, align 4
  br label %29

24:                                               ; preds = %20
  br label %25

25:                                               ; preds = %24
  %26 = load ptr, ptr %6, align 8, !tbaa !5
  %27 = load ptr, ptr %7, align 8, !tbaa !5
  %28 = call i32 @strcmp(ptr noundef %26, ptr noundef %27) #4
  store i32 %28, ptr %3, align 4
  store i32 1, ptr %8, align 4
  br label %29

29:                                               ; preds = %25, %23, %15
  call void @llvm.lifetime.end.p0(i64 8, ptr %7) #3
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #3
  %30 = load i32, ptr %3, align 4
  ret i32 %30
}

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { 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 #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(read) }

!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"}


; 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 i32 @strcmp(ptr nocapture noundef, ptr nocapture noundef) local_unnamed_addr #0

; Function Attrs: mustprogress nofree nounwind willreturn memory(read, inaccessiblemem: none) uwtable
define dso_local i32 @rcutils_string_array_sort_compare(ptr nocapture noundef readonly %0, ptr nocapture noundef readonly %1) local_unnamed_addr #1 {
  %3 = load ptr, ptr %0, align 8, !tbaa !5
  %4 = load ptr, ptr %1, align 8, !tbaa !5
  %5 = icmp eq ptr %3, null
  br i1 %5, label %6, label %9

6:                                                ; preds = %2
  %7 = icmp ne ptr %4, null
  %8 = zext i1 %7 to i32
  br label %13

9:                                                ; preds = %2
  %10 = icmp eq ptr %4, null
  br i1 %10, label %13, label %11

11:                                               ; preds = %9
  %12 = tail call i32 @strcmp(ptr noundef nonnull dereferenceable(1) %3, ptr noundef nonnull dereferenceable(1) %4) #2
  br label %13

13:                                               ; preds = %9, %11, %6
  %.0 = phi i32 [ %8, %6 ], [ %12, %11 ], [ -1, %9 ]
  ret i32 %.0
}

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 = { mustprogress nofree 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(read) }

!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"}


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