; LLVM IR from musetronstar/tagd :: tagd/src (file)

; 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: mustprogress nounwind uwtable
declare noundef i64 @_ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(32)) #1 align 2

; Function Attrs: mustprogress nounwind uwtable
declare noundef nonnull align 1 dereferenceable(1) ptr @_ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEixEm(ptr noundef nonnull align 8 dereferenceable(32), i64 noundef) #1 align 2

; Function Attrs: mustprogress nounwind uwtable
define dso_local noundef i64 @_ZN4tagd4file13dir_shift_posERKNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEE(ptr noundef nonnull align 8 dereferenceable(32) %0) #1 align 2 {
  %2 = alloca i64, align 8
  %3 = alloca ptr, align 8
  %4 = alloca i64, align 8
  %5 = alloca i32, align 4
  store ptr %0, ptr %3, align 8, !tbaa !5
  %6 = load ptr, ptr %3, align 8, !tbaa !5
  %7 = call noundef zeroext i1 @_ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE5emptyEv(ptr noundef nonnull align 8 dereferenceable(32) %6) #2
  br i1 %7, label %8, label %9

8:                                                ; preds = %1
  store i64 -1, ptr %2, align 8
  br label %57

9:                                                ; preds = %1
  call void @llvm.lifetime.start.p0(i64 8, ptr %4) #2
  store i64 0, ptr %4, align 8, !tbaa !9
  %10 = load ptr, ptr %3, align 8, !tbaa !5
  %11 = load i64, ptr %4, align 8, !tbaa !9
  %12 = call noundef nonnull align 1 dereferenceable(1) ptr @_ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEixEm(ptr noundef nonnull align 8 dereferenceable(32) %10, i64 noundef %11) #2
  %13 = load i8, ptr %12, align 1, !tbaa !11
  %14 = sext i8 %13 to i32
  %15 = icmp eq i32 %14, 47
  br i1 %15, label %16, label %25

16:                                               ; preds = %9
  %17 = load i64, ptr %4, align 8, !tbaa !9
  %18 = add i64 %17, 1
  store i64 %18, ptr %4, align 8, !tbaa !9
  %19 = load i64, ptr %4, align 8, !tbaa !9
  %20 = load ptr, ptr %3, align 8, !tbaa !5
  %21 = call noundef i64 @_ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(32) %20) #2
  %22 = icmp uge i64 %19, %21
  br i1 %22, label %23, label %24

23:                                               ; preds = %16
  store i64 -1, ptr %2, align 8
  store i32 1, ptr %5, align 4
  br label %56

24:                                               ; preds = %16
  br label %25

25:                                               ; preds = %24, %9
  %26 = load ptr, ptr %3, align 8, !tbaa !5
  %27 = load i64, ptr %4, align 8, !tbaa !9
  %28 = call noundef i64 @_ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE13find_first_ofEcm(ptr noundef nonnull align 8 dereferenceable(32) %26, i8 noundef signext 47, i64 noundef %27) #2
  store i64 %28, ptr %4, align 8, !tbaa !9
  br label %29

29:                                               ; preds = %54, %25
  %30 = load i64, ptr %4, align 8, !tbaa !9
  %31 = icmp ne i64 %30, -1
  br i1 %31, label %32, label %55

32:                                               ; preds = %29
  %33 = load i64, ptr %4, align 8, !tbaa !9
  %34 = add i64 %33, 1
  %35 = load ptr, ptr %3, align 8, !tbaa !5
  %36 = call noundef i64 @_ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(32) %35) #2
  %37 = icmp uge i64 %34, %36
  br i1 %37, label %38, label %39

38:                                               ; preds = %32
  store i64 -1, ptr %2, align 8
  store i32 1, ptr %5, align 4
  br label %56

39:                                               ; preds = %32
  %40 = load ptr, ptr %3, align 8, !tbaa !5
  %41 = load i64, ptr %4, align 8, !tbaa !9
  %42 = add i64 %41, 1
  %43 = call noundef nonnull align 1 dereferenceable(1) ptr @_ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEixEm(ptr noundef nonnull align 8 dereferenceable(32) %40, i64 noundef %42) #2
  %44 = load i8, ptr %43, align 1, !tbaa !11
  %45 = sext i8 %44 to i32
  %46 = icmp eq i32 %45, 47
  br i1 %46, label %47, label %51

47:                                               ; preds = %39
  %48 = load ptr, ptr %3, align 8, !tbaa !5
  %49 = load i64, ptr %4, align 8, !tbaa !9
  %50 = call noundef i64 @_ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE13find_first_ofEcm(ptr noundef nonnull align 8 dereferenceable(32) %48, i8 noundef signext 47, i64 noundef %49) #2
  store i64 %50, ptr %4, align 8, !tbaa !9
  br label %54

51:                                               ; preds = %39
  %52 = load i64, ptr %4, align 8, !tbaa !9
  %53 = add i64 %52, 1
  store i64 %53, ptr %2, align 8
  store i32 1, ptr %5, align 4
  br label %56

54:                                               ; preds = %47
  br label %29, !llvm.loop !12

55:                                               ; preds = %29
  store i64 0, ptr %2, align 8
  store i32 1, ptr %5, align 4
  br label %56

56:                                               ; preds = %55, %51, %38, %23
  call void @llvm.lifetime.end.p0(i64 8, ptr %4) #2
  br label %57

57:                                               ; preds = %56, %8
  %58 = load i64, ptr %2, align 8
  ret i64 %58
}

; Function Attrs: mustprogress nounwind uwtable
declare noundef zeroext i1 @_ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE5emptyEv(ptr noundef nonnull align 8 dereferenceable(32)) #1 align 2

; Function Attrs: mustprogress nounwind uwtable
declare noundef i64 @_ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE13find_first_ofEcm(ptr noundef nonnull align 8 dereferenceable(32), i8 noundef signext, i64 noundef) #1 align 2

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

!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++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"long", !7, i64 0}
!11 = !{!7, !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: mustprogress nounwind uwtable
declare noundef i64 @_ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(32)) local_unnamed_addr #0 align 2

; Function Attrs: mustprogress nounwind uwtable
declare noundef nonnull align 1 dereferenceable(1) ptr @_ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEixEm(ptr noundef nonnull align 8 dereferenceable(32), i64 noundef) local_unnamed_addr #0 align 2

; Function Attrs: mustprogress nounwind uwtable
define dso_local noundef i64 @_ZN4tagd4file13dir_shift_posERKNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEE(ptr noundef nonnull align 8 dereferenceable(32) %0) local_unnamed_addr #0 align 2 {
  %2 = tail call noundef zeroext i1 @_ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE5emptyEv(ptr noundef nonnull align 8 dereferenceable(32) %0) #1
  br i1 %2, label %.loopexit, label %3

3:                                                ; preds = %1
  %4 = tail call noundef nonnull align 1 dereferenceable(1) ptr @_ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEixEm(ptr noundef nonnull align 8 dereferenceable(32) %0, i64 noundef 0) #1
  %5 = load i8, ptr %4, align 1, !tbaa !5
  %6 = icmp eq i8 %5, 47
  br i1 %6, label %7, label %10

7:                                                ; preds = %3
  %8 = tail call noundef i64 @_ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(32) %0) #1
  %9 = icmp ult i64 %8, 2
  br i1 %9, label %.loopexit, label %10

10:                                               ; preds = %7, %3
  %.0 = phi i64 [ 1, %7 ], [ 0, %3 ]
  %11 = tail call noundef i64 @_ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE13find_first_ofEcm(ptr noundef nonnull align 8 dereferenceable(32) %0, i8 noundef signext 47, i64 noundef %.0) #1
  %.not20 = icmp eq i64 %11, -1
  br i1 %.not20, label %.loopexit, label %.lr.ph

.lr.ph:                                           ; preds = %10, %18
  %.121 = phi i64 [ %19, %18 ], [ %11, %10 ]
  %12 = add nuw i64 %.121, 1
  %13 = tail call noundef i64 @_ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(32) %0) #1
  %.not19 = icmp ult i64 %12, %13
  br i1 %.not19, label %14, label %.loopexit

14:                                               ; preds = %.lr.ph
  %15 = tail call noundef nonnull align 1 dereferenceable(1) ptr @_ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEixEm(ptr noundef nonnull align 8 dereferenceable(32) %0, i64 noundef %12) #1
  %16 = load i8, ptr %15, align 1, !tbaa !5
  %17 = icmp eq i8 %16, 47
  br i1 %17, label %18, label %.loopexit

18:                                               ; preds = %14
  %19 = tail call noundef i64 @_ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE13find_first_ofEcm(ptr noundef nonnull align 8 dereferenceable(32) %0, i8 noundef signext 47, i64 noundef %.121) #1
  %.not = icmp eq i64 %19, -1
  br i1 %.not, label %.loopexit, label %.lr.ph, !llvm.loop !8

.loopexit:                                        ; preds = %18, %14, %.lr.ph, %10, %7, %1
  %.117 = phi i64 [ -1, %1 ], [ -1, %7 ], [ 0, %10 ], [ 0, %18 ], [ %12, %14 ], [ -1, %.lr.ph ]
  ret i64 %.117
}

; Function Attrs: mustprogress nounwind uwtable
declare noundef zeroext i1 @_ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE5emptyEv(ptr noundef nonnull align 8 dereferenceable(32)) local_unnamed_addr #0 align 2

; Function Attrs: mustprogress nounwind uwtable
declare noundef i64 @_ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE13find_first_ofEcm(ptr noundef nonnull align 8 dereferenceable(32), i8 noundef signext, i64 noundef) local_unnamed_addr #0 align 2

attributes #0 = { mustprogress 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 #1 = { 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++ TBAA"}
!8 = distinct !{!8, !9}
!9 = !{!"llvm.loop.mustprogress"}


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