; LLVM IR from Discngine/fpocket :: 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"

; 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 void @extract_path(ptr noundef %0, ptr noundef %1) #1 {
  %3 = alloca ptr, align 8
  %4 = alloca ptr, align 8
  %5 = alloca i8, align 1
  %6 = alloca ptr, align 8
  %7 = alloca ptr, align 8
  store ptr %0, ptr %3, align 8, !tbaa !5
  store ptr %1, ptr %4, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 1, ptr %5) #3
  call void @llvm.lifetime.start.p0(i64 8, ptr %6) #3
  %8 = load ptr, ptr %3, align 8, !tbaa !5
  store ptr %8, ptr %6, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %7) #3
  store ptr null, ptr %7, align 8, !tbaa !5
  br label %9

9:                                                ; preds = %20, %2
  %10 = load ptr, ptr %6, align 8, !tbaa !5
  %11 = load i8, ptr %10, align 1, !tbaa !9
  %12 = icmp ne i8 %11, 0
  br i1 %12, label %13, label %23

13:                                               ; preds = %9
  %14 = load ptr, ptr %6, align 8, !tbaa !5
  %15 = load i8, ptr %14, align 1, !tbaa !9
  %16 = sext i8 %15 to i32
  %17 = icmp eq i32 %16, 47
  br i1 %17, label %18, label %20

18:                                               ; preds = %13
  %19 = load ptr, ptr %6, align 8, !tbaa !5
  store ptr %19, ptr %7, align 8, !tbaa !5
  br label %20

20:                                               ; preds = %18, %13
  %21 = load ptr, ptr %6, align 8, !tbaa !5
  %22 = getelementptr inbounds i8, ptr %21, i32 1
  store ptr %22, ptr %6, align 8, !tbaa !5
  br label %9, !llvm.loop !10

23:                                               ; preds = %9
  %24 = load ptr, ptr %7, align 8, !tbaa !5
  %25 = icmp ne ptr %24, null
  br i1 %25, label %26, label %35

26:                                               ; preds = %23
  %27 = load ptr, ptr %7, align 8, !tbaa !5
  %28 = load i8, ptr %27, align 1, !tbaa !9
  store i8 %28, ptr %5, align 1, !tbaa !9
  %29 = load ptr, ptr %7, align 8, !tbaa !5
  store i8 0, ptr %29, align 1, !tbaa !9
  %30 = load ptr, ptr %4, align 8, !tbaa !5
  %31 = load ptr, ptr %3, align 8, !tbaa !5
  %32 = call ptr @strcpy(ptr noundef %30, ptr noundef %31) #3
  %33 = load i8, ptr %5, align 1, !tbaa !9
  %34 = load ptr, ptr %7, align 8, !tbaa !5
  store i8 %33, ptr %34, align 1, !tbaa !9
  br label %38

35:                                               ; preds = %23
  %36 = load ptr, ptr %4, align 8, !tbaa !5
  %37 = getelementptr inbounds i8, ptr %36, i64 0
  store i8 0, ptr %37, align 1, !tbaa !9
  br label %38

38:                                               ; preds = %35, %26
  call void @llvm.lifetime.end.p0(i64 8, ptr %7) #3
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #3
  call void @llvm.lifetime.end.p0(i64 1, ptr %5) #3
  ret void
}

; Function Attrs: nounwind
declare ptr @strcpy(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 "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 = !{!7, !7, i64 0}
!10 = distinct !{!10, !11}
!11 = !{!"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(readwrite, inaccessiblemem: none) uwtable
define dso_local void @extract_path(ptr noundef %0, ptr noundef %1) local_unnamed_addr #0 {
  br label %3

3:                                                ; preds = %6, %2
  %.012 = phi ptr [ %0, %2 ], [ %7, %6 ]
  %.0 = phi ptr [ null, %2 ], [ %.1, %6 ]
  %4 = load i8, ptr %.012, align 1, !tbaa !5
  switch i8 %4, label %6 [
    i8 0, label %8
    i8 47, label %5
  ]

5:                                                ; preds = %3
  br label %6

6:                                                ; preds = %3, %5
  %.1 = phi ptr [ %.012, %5 ], [ %.0, %3 ]
  %7 = getelementptr inbounds i8, ptr %.012, i64 1
  br label %3, !llvm.loop !8

8:                                                ; preds = %3
  %.not14 = icmp eq ptr %.0, null
  br i1 %.not14, label %12, label %9

9:                                                ; preds = %8
  %10 = load i8, ptr %.0, align 1, !tbaa !5
  store i8 0, ptr %.0, align 1, !tbaa !5
  %11 = tail call ptr @strcpy(ptr noundef nonnull dereferenceable(1) %1, ptr noundef nonnull dereferenceable(1) %0) #2
  store i8 %10, ptr %.0, align 1, !tbaa !5
  br label %13

12:                                               ; preds = %8
  store i8 0, ptr %1, align 1, !tbaa !5
  br label %13

13:                                               ; preds = %12, %9
  ret void
}

; Function Attrs: mustprogress nofree nounwind willreturn memory(argmem: readwrite)
declare ptr @strcpy(ptr noalias noundef returned writeonly, ptr noalias nocapture noundef readonly) local_unnamed_addr #1

attributes #0 = { nofree nounwind memory(readwrite, 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: readwrite) "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 = !{!"omnipotent char", !7, i64 0}
!7 = !{!"Simple C/C++ TBAA"}
!8 = distinct !{!8, !9}
!9 = !{!"llvm.loop.mustprogress"}


; Effective O3 passes: EarlyCSEPass,GVNPass,GlobalOptPass,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,LCSSAPass,LoopUnrollPass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass,TailCallElimPass