; LLVM IR from andreimaximov/algorithms :: codeforces/interactive-bulls-and-cows-hard (main)

; 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.result = type { i32, i32 }

@.str = external hidden unnamed_addr constant [21 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [110 x i8], align 1
@__PRETTY_FUNCTION__._Z4diffRKNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEES6_ = external hidden unnamed_addr constant [44 x i8], align 1

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local void @_ZN6resultC2Ev(ptr noundef nonnull align 4 dereferenceable(8)) unnamed_addr #0 align 2

; Function Attrs: mustprogress nounwind uwtable
define dso_local i64 @_Z4diffRKNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEES6_(ptr noundef nonnull align 8 dereferenceable(32) %0, ptr noundef nonnull align 8 dereferenceable(32) %1) #1 {
  %3 = alloca %struct.result, align 4
  %4 = alloca ptr, align 8
  %5 = alloca ptr, align 8
  %6 = alloca i64, align 8
  store ptr %0, ptr %4, align 8, !tbaa !5
  store ptr %1, ptr %5, align 8, !tbaa !5
  %7 = load ptr, ptr %4, align 8, !tbaa !5
  %8 = call noundef i64 @_ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(32) %7) #5
  %9 = load ptr, ptr %5, align 8, !tbaa !5
  %10 = call noundef i64 @_ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(32) %9) #5
  %11 = icmp eq i64 %8, %10
  br i1 %11, label %12, label %13

12:                                               ; preds = %2
  br label %15

13:                                               ; preds = %2
  call void @__assert_fail(ptr noundef @.str, ptr noundef @.str.1, i32 noundef 46, ptr noundef @__PRETTY_FUNCTION__._Z4diffRKNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEES6_) #6
  unreachable

14:                                               ; No predecessors!
  br label %15

15:                                               ; preds = %14, %12
  call void @_ZN6resultC2Ev(ptr noundef nonnull align 4 dereferenceable(8) %3) #5
  call void @llvm.lifetime.start.p0(i64 8, ptr %6) #5
  store i64 0, ptr %6, align 8, !tbaa !9
  br label %16

16:                                               ; preds = %52, %15
  %17 = load i64, ptr %6, align 8, !tbaa !9
  %18 = load ptr, ptr %4, align 8, !tbaa !5
  %19 = call noundef i64 @_ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(32) %18) #5
  %20 = icmp ult i64 %17, %19
  br i1 %20, label %22, label %21

21:                                               ; preds = %16
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #5
  br label %55

22:                                               ; preds = %16
  %23 = load ptr, ptr %4, align 8, !tbaa !5
  %24 = load i64, ptr %6, align 8, !tbaa !9
  %25 = call noundef nonnull align 1 dereferenceable(1) ptr @_ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEixEm(ptr noundef nonnull align 8 dereferenceable(32) %23, i64 noundef %24) #5
  %26 = load i8, ptr %25, align 1, !tbaa !11
  %27 = sext i8 %26 to i32
  %28 = load ptr, ptr %5, align 8, !tbaa !5
  %29 = load i64, ptr %6, align 8, !tbaa !9
  %30 = call noundef nonnull align 1 dereferenceable(1) ptr @_ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEixEm(ptr noundef nonnull align 8 dereferenceable(32) %28, i64 noundef %29) #5
  %31 = load i8, ptr %30, align 1, !tbaa !11
  %32 = sext i8 %31 to i32
  %33 = icmp eq i32 %27, %32
  br i1 %33, label %34, label %38

34:                                               ; preds = %22
  %35 = getelementptr inbounds %struct.result, ptr %3, i32 0, i32 0
  %36 = load i32, ptr %35, align 4, !tbaa !12
  %37 = add nsw i32 %36, 1
  store i32 %37, ptr %35, align 4, !tbaa !12
  br label %51

38:                                               ; preds = %22
  %39 = load ptr, ptr %4, align 8, !tbaa !5
  %40 = load ptr, ptr %5, align 8, !tbaa !5
  %41 = load i64, ptr %6, align 8, !tbaa !9
  %42 = call noundef nonnull align 1 dereferenceable(1) ptr @_ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEixEm(ptr noundef nonnull align 8 dereferenceable(32) %40, i64 noundef %41) #5
  %43 = load i8, ptr %42, align 1, !tbaa !11
  %44 = call noundef i64 @_ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE4findEcm(ptr noundef nonnull align 8 dereferenceable(32) %39, i8 noundef signext %43, i64 noundef 0) #5
  %45 = icmp ne i64 %44, -1
  br i1 %45, label %46, label %50

46:                                               ; preds = %38
  %47 = getelementptr inbounds %struct.result, ptr %3, i32 0, i32 1
  %48 = load i32, ptr %47, align 4, !tbaa !15
  %49 = add nsw i32 %48, 1
  store i32 %49, ptr %47, align 4, !tbaa !15
  br label %50

50:                                               ; preds = %46, %38
  br label %51

51:                                               ; preds = %50, %34
  br label %52

52:                                               ; preds = %51
  %53 = load i64, ptr %6, align 8, !tbaa !9
  %54 = add i64 %53, 1
  store i64 %54, ptr %6, align 8, !tbaa !9
  br label %16, !llvm.loop !16

55:                                               ; preds = %21
  %56 = load i64, ptr %3, align 4
  ret i64 %56
}

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

; Function Attrs: noreturn nounwind
declare void @__assert_fail(ptr noundef, ptr noundef, i32 noundef, ptr noundef) #2

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #3

; 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: nounwind
declare noundef i64 @_ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE4findEcm(ptr noundef nonnull align 8 dereferenceable(32), i8 noundef signext, i64 noundef) #4

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #3

attributes #0 = { inlinehint 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 = { 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 = { noreturn 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 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #4 = { 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 #5 = { nounwind }
attributes #6 = { noreturn 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 = !{!13, !14, i64 0}
!13 = !{!"_ZTS6result", !14, i64 0, !14, i64 4}
!14 = !{!"int", !7, i64 0}
!15 = !{!13, !14, i64 4}
!16 = distinct !{!16, !17}
!17 = !{!"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"

%struct.result = type { i32, i32 }

@.str = external hidden unnamed_addr constant [21 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [110 x i8], align 1
@__PRETTY_FUNCTION__._Z4diffRKNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEES6_ = external hidden unnamed_addr constant [44 x i8], align 1

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local void @_ZN6resultC2Ev(ptr noundef nonnull align 4 dereferenceable(8)) unnamed_addr #0 align 2

; Function Attrs: mustprogress nounwind uwtable
define dso_local i64 @_Z4diffRKNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEES6_(ptr noundef nonnull align 8 dereferenceable(32) %0, ptr noundef nonnull align 8 dereferenceable(32) %1) local_unnamed_addr #1 {
  %3 = alloca %struct.result, align 8
  %4 = tail call noundef i64 @_ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(32) %0) #4
  %5 = tail call noundef i64 @_ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(32) %1) #4
  %6 = icmp eq i64 %4, %5
  br i1 %6, label %8, label %7

7:                                                ; preds = %2
  tail call void @__assert_fail(ptr noundef nonnull @.str, ptr noundef nonnull @.str.1, i32 noundef 46, ptr noundef nonnull @__PRETTY_FUNCTION__._Z4diffRKNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEES6_) #5
  unreachable

8:                                                ; preds = %2
  call void @_ZN6resultC2Ev(ptr noundef nonnull align 4 dereferenceable(8) %3) #4
  %9 = call noundef i64 @_ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(32) %0) #4
  %.not12 = icmp eq i64 %9, 0
  br i1 %.not12, label %._crit_edge, label %.lr.ph

.lr.ph:                                           ; preds = %8
  %10 = getelementptr inbounds i8, ptr %3, i64 4
  br label %12

._crit_edge:                                      ; preds = %28, %8
  %11 = load i64, ptr %3, align 8
  ret i64 %11

12:                                               ; preds = %.lr.ph, %28
  %.011 = phi i64 [ 0, %.lr.ph ], [ %29, %28 ]
  %13 = call noundef nonnull align 1 dereferenceable(1) ptr @_ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEixEm(ptr noundef nonnull align 8 dereferenceable(32) %0, i64 noundef %.011) #4
  %14 = load i8, ptr %13, align 1, !tbaa !5
  %15 = call noundef nonnull align 1 dereferenceable(1) ptr @_ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEixEm(ptr noundef nonnull align 8 dereferenceable(32) %1, i64 noundef %.011) #4
  %16 = load i8, ptr %15, align 1, !tbaa !5
  %17 = icmp eq i8 %14, %16
  br i1 %17, label %18, label %21

18:                                               ; preds = %12
  %19 = load i32, ptr %3, align 8, !tbaa !8
  %20 = add nsw i32 %19, 1
  store i32 %20, ptr %3, align 8, !tbaa !8
  br label %28

21:                                               ; preds = %12
  %22 = call noundef nonnull align 1 dereferenceable(1) ptr @_ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEixEm(ptr noundef nonnull align 8 dereferenceable(32) %1, i64 noundef %.011) #4
  %23 = load i8, ptr %22, align 1, !tbaa !5
  %24 = call noundef i64 @_ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE4findEcm(ptr noundef nonnull align 8 dereferenceable(32) %0, i8 noundef signext %23, i64 noundef 0) #4
  %.not = icmp eq i64 %24, -1
  br i1 %.not, label %28, label %25

25:                                               ; preds = %21
  %26 = load i32, ptr %10, align 4, !tbaa !11
  %27 = add nsw i32 %26, 1
  store i32 %27, ptr %10, align 4, !tbaa !11
  br label %28

28:                                               ; preds = %18, %25, %21
  %29 = add nuw i64 %.011, 1
  %30 = call noundef i64 @_ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(32) %0) #4
  %31 = icmp ult i64 %29, %30
  br i1 %31, label %12, label %._crit_edge, !llvm.loop !12
}

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

; Function Attrs: noreturn nounwind
declare void @__assert_fail(ptr noundef, ptr noundef, i32 noundef, ptr noundef) local_unnamed_addr #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 #1 align 2

; Function Attrs: nounwind
declare noundef i64 @_ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE4findEcm(ptr noundef nonnull align 8 dereferenceable(32), i8 noundef signext, i64 noundef) local_unnamed_addr #3

attributes #0 = { inlinehint 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 = { 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 = { noreturn 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 "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 #4 = { nounwind }
attributes #5 = { noreturn 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 = !{!9, !10, i64 0}
!9 = !{!"_ZTS6result", !10, i64 0, !10, i64 4}
!10 = !{!"int", !6, i64 0}
!11 = !{!9, !10, i64 4}
!12 = distinct !{!12, !13}
!13 = !{!"llvm.loop.mustprogress"}


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