; LLVM IR from mwarning/KadNode :: src (utils)

; 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.option_t = type { ptr, i16, i16 }

; 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 @find_option(ptr noundef %0, ptr noundef %1) #1 {
  %3 = alloca ptr, align 8
  %4 = alloca ptr, align 8
  %5 = alloca ptr, align 8
  %6 = alloca ptr, align 8
  %7 = 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
  %8 = load ptr, ptr %4, align 8, !tbaa !5
  store ptr %8, ptr %6, align 8, !tbaa !5
  br label %9

9:                                                ; preds = %28, %2
  %10 = load ptr, ptr %6, align 8, !tbaa !5
  %11 = getelementptr inbounds %struct.option_t, ptr %10, i32 0, i32 0
  %12 = load ptr, ptr %11, align 8, !tbaa !9
  %13 = icmp ne ptr %12, null
  br i1 %13, label %14, label %17

14:                                               ; preds = %9
  %15 = load ptr, ptr %5, align 8, !tbaa !5
  %16 = icmp ne ptr %15, null
  br label %17

17:                                               ; preds = %14, %9
  %18 = phi i1 [ false, %9 ], [ %16, %14 ]
  br i1 %18, label %19, label %31

19:                                               ; preds = %17
  %20 = load ptr, ptr %5, align 8, !tbaa !5
  %21 = load ptr, ptr %6, align 8, !tbaa !5
  %22 = getelementptr inbounds %struct.option_t, ptr %21, i32 0, i32 0
  %23 = load ptr, ptr %22, align 8, !tbaa !9
  %24 = call i32 @strcmp(ptr noundef %20, ptr noundef %23) #4
  %25 = icmp eq i32 0, %24
  br i1 %25, label %26, label %28

26:                                               ; preds = %19
  %27 = load ptr, ptr %6, align 8, !tbaa !5
  store ptr %27, ptr %3, align 8
  store i32 1, ptr %7, align 4
  br label %32

28:                                               ; preds = %19
  %29 = load ptr, ptr %6, align 8, !tbaa !5
  %30 = getelementptr inbounds %struct.option_t, ptr %29, i32 1
  store ptr %30, ptr %6, align 8, !tbaa !5
  br label %9, !llvm.loop !12

31:                                               ; preds = %17
  store ptr null, ptr %3, align 8
  store i32 1, ptr %7, align 4
  br label %32

32:                                               ; preds = %31, %26
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #3
  %33 = load ptr, ptr %3, align 8
  ret ptr %33
}

; Function Attrs: nounwind willreturn memory(read)
declare i32 @strcmp(ptr noundef, 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, !6, i64 0}
!10 = !{!"", !6, i64 0, !11, i64 8, !11, i64 10}
!11 = !{!"short", !7, i64 0}
!12 = distinct !{!12, !13}
!13 = !{!"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 noundef ptr @find_option(ptr noundef readonly %0, ptr noundef readonly %1) local_unnamed_addr #0 {
  %3 = icmp ne ptr %1, null
  %4 = load ptr, ptr %0, align 8, !tbaa !5
  %5 = icmp ne ptr %4, null
  %6 = and i1 %3, %5
  br i1 %6, label %.lr.ph.split, label %._crit_edge

.lr.ph.split:                                     ; preds = %2, %10
  %7 = phi ptr [ %12, %10 ], [ %4, %2 ]
  %.011 = phi ptr [ %11, %10 ], [ %0, %2 ]
  %8 = tail call i32 @strcmp(ptr noundef nonnull dereferenceable(1) %1, ptr noundef nonnull dereferenceable(1) %7) #2
  %9 = icmp eq i32 %8, 0
  br i1 %9, label %._crit_edge, label %10

10:                                               ; preds = %.lr.ph.split
  %11 = getelementptr inbounds i8, ptr %.011, i64 16
  %12 = load ptr, ptr %11, align 8, !tbaa !5
  %.not = icmp eq ptr %12, null
  br i1 %.not, label %._crit_edge, label %.lr.ph.split, !llvm.loop !11

._crit_edge:                                      ; preds = %.lr.ph.split, %10, %2
  %.08 = phi ptr [ null, %2 ], [ null, %10 ], [ %.011, %.lr.ph.split ]
  ret ptr %.08
}

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

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 = { 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, !7, i64 0}
!6 = !{!"", !7, i64 0, !10, i64 8, !10, i64 10}
!7 = !{!"any pointer", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C/C++ TBAA"}
!10 = !{!"short", !8, i64 0}
!11 = distinct !{!11, !12}
!12 = !{!"llvm.loop.mustprogress"}


; Effective O3 passes: EarlyCSEPass,GlobalOptPass,InferFunctionAttrsPass,InstCombinePass,JumpThreadingPass,LICMPass,LoopInstSimplifyPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,ReassociatePass,SROAPass,SimplifyCFGPass,TailCallElimPass