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

; 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 uwtable
define dso_local ptr @rcutils_cli_get_option(ptr noundef %0, ptr noundef %1, ptr noundef %2) #1 {
  %4 = alloca ptr, align 8
  %5 = alloca ptr, align 8
  %6 = alloca ptr, align 8
  %7 = alloca ptr, align 8
  %8 = alloca i64, align 8
  %9 = alloca i64, align 8
  %10 = alloca i32, align 4
  store ptr %0, ptr %5, align 8, !tbaa !5
  store ptr %1, ptr %6, align 8, !tbaa !5
  store ptr %2, ptr %7, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %8) #3
  store i64 0, ptr %8, align 8, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 8, ptr %9) #3
  %11 = load ptr, ptr %6, align 8, !tbaa !5
  %12 = load ptr, ptr %5, align 8, !tbaa !5
  %13 = ptrtoint ptr %11 to i64
  %14 = ptrtoint ptr %12 to i64
  %15 = sub i64 %13, %14
  %16 = sdiv exact i64 %15, 8
  store i64 %16, ptr %9, align 8, !tbaa !9
  br label %17

17:                                               ; preds = %33, %3
  %18 = load i64, ptr %8, align 8, !tbaa !9
  %19 = load i64, ptr %9, align 8, !tbaa !9
  %20 = icmp ult i64 %18, %19
  br i1 %20, label %21, label %36

21:                                               ; preds = %17
  %22 = load ptr, ptr %5, align 8, !tbaa !5
  %23 = load i64, ptr %8, align 8, !tbaa !9
  %24 = getelementptr inbounds ptr, ptr %22, i64 %23
  %25 = load ptr, ptr %24, align 8, !tbaa !5
  %26 = load ptr, ptr %7, align 8, !tbaa !5
  %27 = load ptr, ptr %7, align 8, !tbaa !5
  %28 = call i64 @strlen(ptr noundef %27) #4
  %29 = call i32 @strncmp(ptr noundef %25, ptr noundef %26, i64 noundef %28) #4
  %30 = icmp eq i32 %29, 0
  br i1 %30, label %31, label %32

31:                                               ; preds = %21
  br label %36

32:                                               ; preds = %21
  br label %33

33:                                               ; preds = %32
  %34 = load i64, ptr %8, align 8, !tbaa !9
  %35 = add i64 %34, 1
  store i64 %35, ptr %8, align 8, !tbaa !9
  br label %17, !llvm.loop !11

36:                                               ; preds = %31, %17
  %37 = load i64, ptr %8, align 8, !tbaa !9
  %38 = load i64, ptr %9, align 8, !tbaa !9
  %39 = sub i64 %38, 1
  %40 = icmp ult i64 %37, %39
  br i1 %40, label %41, label %53

41:                                               ; preds = %36
  %42 = load ptr, ptr %5, align 8, !tbaa !5
  %43 = load i64, ptr %8, align 8, !tbaa !9
  %44 = add i64 %43, 1
  store i64 %44, ptr %8, align 8, !tbaa !9
  %45 = getelementptr inbounds ptr, ptr %42, i64 %43
  %46 = load ptr, ptr %45, align 8, !tbaa !5
  %47 = icmp ne ptr %46, null
  br i1 %47, label %48, label %53

48:                                               ; preds = %41
  %49 = load ptr, ptr %5, align 8, !tbaa !5
  %50 = load i64, ptr %8, align 8, !tbaa !9
  %51 = getelementptr inbounds ptr, ptr %49, i64 %50
  %52 = load ptr, ptr %51, align 8, !tbaa !5
  store ptr %52, ptr %4, align 8
  store i32 1, ptr %10, align 4
  br label %54

53:                                               ; preds = %41, %36
  store ptr null, ptr %4, align 8
  store i32 1, ptr %10, align 4
  br label %54

54:                                               ; preds = %53, %48
  call void @llvm.lifetime.end.p0(i64 8, ptr %9) #3
  call void @llvm.lifetime.end.p0(i64 8, ptr %8) #3
  %55 = load ptr, ptr %4, align 8
  ret ptr %55
}

; Function Attrs: nounwind willreturn memory(read)
declare i32 @strncmp(ptr noundef, ptr noundef, i64 noundef) #2

; Function Attrs: nounwind willreturn memory(read)
declare i64 @strlen(ptr noundef) #2

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 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 #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"}
!9 = !{!10, !10, i64 0}
!10 = !{!"long", !7, i64 0}
!11 = distinct !{!11, !12}
!12 = !{!"llvm.loop.mustprogress"}


; 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: nofree nounwind memory(read, inaccessiblemem: none) uwtable
define dso_local ptr @rcutils_cli_get_option(ptr noundef %0, ptr noundef %1, ptr nocapture noundef readonly %2) local_unnamed_addr #0 {
  %4 = ptrtoint ptr %1 to i64
  %5 = ptrtoint ptr %0 to i64
  %6 = sub i64 %4, %5
  %7 = ashr exact i64 %6, 3
  %.not19 = icmp eq ptr %1, %0
  br i1 %.not19, label %._crit_edge, label %.lr.ph

.lr.ph:                                           ; preds = %3
  %8 = tail call i64 @strlen(ptr noundef nonnull dereferenceable(1) %2) #3
  %umax = tail call i64 @llvm.umax.i64(i64 %7, i64 1)
  br label %9

9:                                                ; preds = %.lr.ph, %14
  %.01516 = phi i64 [ 0, %.lr.ph ], [ %15, %14 ]
  %10 = getelementptr inbounds ptr, ptr %0, i64 %.01516
  %11 = load ptr, ptr %10, align 8, !tbaa !5
  %12 = tail call i32 @strncmp(ptr noundef %11, ptr noundef %2, i64 noundef %8) #3
  %13 = icmp eq i32 %12, 0
  br i1 %13, label %._crit_edge, label %14

14:                                               ; preds = %9
  %15 = add nuw i64 %.01516, 1
  %exitcond.not = icmp eq i64 %15, %umax
  br i1 %exitcond.not, label %._crit_edge, label %9, !llvm.loop !9

._crit_edge:                                      ; preds = %14, %9, %3
  %.015.lcssa = phi i64 [ 0, %3 ], [ %.01516, %9 ], [ %umax, %14 ]
  %16 = add nsw i64 %7, -1
  %17 = icmp ult i64 %.015.lcssa, %16
  br i1 %17, label %18, label %24

18:                                               ; preds = %._crit_edge
  %19 = getelementptr inbounds ptr, ptr %0, i64 %.015.lcssa
  %20 = load ptr, ptr %19, align 8, !tbaa !5
  %.not = icmp eq ptr %20, null
  br i1 %.not, label %24, label %21

21:                                               ; preds = %18
  %22 = getelementptr i8, ptr %19, i64 8
  %23 = load ptr, ptr %22, align 8, !tbaa !5
  br label %24

24:                                               ; preds = %._crit_edge, %18, %21
  %.0 = phi ptr [ %23, %21 ], [ null, %18 ], [ null, %._crit_edge ]
  ret ptr %.0
}

; Function Attrs: mustprogress nofree nounwind willreturn memory(argmem: read)
declare i32 @strncmp(ptr nocapture noundef, ptr nocapture noundef, i64 noundef) local_unnamed_addr #1

; Function Attrs: mustprogress nofree nounwind willreturn memory(argmem: read)
declare i64 @strlen(ptr nocapture noundef) local_unnamed_addr #1

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

attributes #0 = { nofree nounwind 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 #1 = { 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 #2 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }
attributes #3 = { 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"}
!9 = distinct !{!9, !10}
!10 = !{!"llvm.loop.mustprogress"}


; Effective O3 passes: EarlyCSEPass,GlobalOptPass,IPSCCPPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,JumpThreadingPass,LCSSAPass,LICMPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass,TailCallElimPass