; LLVM IR from DionysiosB/CodeForces :: 2036C-AnyaAnd1100.ll/Z6scountRNSt7 (cxx1112basic_stringIcSt11char_traitsIcESaIcEEEl)

; 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: mustprogress uwtable
declare dso_local noundef zeroext i1 @_Z5checkRNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEl(ptr noundef nonnull align 8 dereferenceable(32), i64 noundef) #0

; Function Attrs: mustprogress uwtable
define dso_local noundef i64 @_Z6scountRNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEl(ptr noundef nonnull align 8 dereferenceable(32) %0, i64 noundef %1) #0 {
  %3 = alloca ptr, align 8
  %4 = alloca i64, align 8
  %5 = alloca i64, align 8
  %6 = alloca i64, align 8
  store ptr %0, ptr %3, align 8, !tbaa !5
  store i64 %1, ptr %4, align 8, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 8, ptr %5) #2
  store i64 0, ptr %5, align 8, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 8, ptr %6) #2
  store i64 -3, ptr %6, align 8, !tbaa !9
  br label %7

7:                                                ; preds = %20, %2
  %8 = load i64, ptr %6, align 8, !tbaa !9
  %9 = icmp sle i64 %8, 3
  br i1 %9, label %11, label %10

10:                                               ; preds = %7
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #2
  br label %23

11:                                               ; preds = %7
  %12 = load ptr, ptr %3, align 8, !tbaa !5
  %13 = load i64, ptr %4, align 8, !tbaa !9
  %14 = load i64, ptr %6, align 8, !tbaa !9
  %15 = add nsw i64 %13, %14
  %16 = call noundef zeroext i1 @_Z5checkRNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEl(ptr noundef nonnull align 8 dereferenceable(32) %12, i64 noundef %15)
  %17 = zext i1 %16 to i64
  %18 = load i64, ptr %5, align 8, !tbaa !9
  %19 = add nsw i64 %18, %17
  store i64 %19, ptr %5, align 8, !tbaa !9
  br label %20

20:                                               ; preds = %11
  %21 = load i64, ptr %6, align 8, !tbaa !9
  %22 = add nsw i64 %21, 1
  store i64 %22, ptr %6, align 8, !tbaa !9
  br label %7, !llvm.loop !11

23:                                               ; preds = %10
  %24 = load i64, ptr %5, align 8, !tbaa !9
  call void @llvm.lifetime.end.p0(i64 8, ptr %5) #2
  ret i64 %24
}

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #1

attributes #0 = { mustprogress 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 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
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 = 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: mustprogress uwtable
declare dso_local noundef zeroext i1 @_Z5checkRNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEl(ptr noundef nonnull align 8 dereferenceable(32), i64 noundef) local_unnamed_addr #0

; Function Attrs: mustprogress uwtable
define dso_local noundef i64 @_Z6scountRNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEl(ptr noundef nonnull align 8 dereferenceable(32) %0, i64 noundef %1) local_unnamed_addr #0 {
  %3 = add nsw i64 %1, -3
  %4 = tail call noundef zeroext i1 @_Z5checkRNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEl(ptr noundef nonnull align 8 dereferenceable(32) %0, i64 noundef %3)
  %5 = zext i1 %4 to i64
  %6 = add nsw i64 %1, -2
  %7 = tail call noundef zeroext i1 @_Z5checkRNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEl(ptr noundef nonnull align 8 dereferenceable(32) %0, i64 noundef %6)
  %8 = zext i1 %7 to i64
  %9 = add nuw nsw i64 %5, %8
  %10 = add nsw i64 %1, -1
  %11 = tail call noundef zeroext i1 @_Z5checkRNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEl(ptr noundef nonnull align 8 dereferenceable(32) %0, i64 noundef %10)
  %12 = zext i1 %11 to i64
  %13 = add nuw nsw i64 %9, %12
  %14 = tail call noundef zeroext i1 @_Z5checkRNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEl(ptr noundef nonnull align 8 dereferenceable(32) %0, i64 noundef %1)
  %15 = zext i1 %14 to i64
  %16 = add nuw nsw i64 %13, %15
  %17 = add nsw i64 %1, 1
  %18 = tail call noundef zeroext i1 @_Z5checkRNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEl(ptr noundef nonnull align 8 dereferenceable(32) %0, i64 noundef %17)
  %19 = zext i1 %18 to i64
  %20 = add nuw nsw i64 %16, %19
  %21 = add nsw i64 %1, 2
  %22 = tail call noundef zeroext i1 @_Z5checkRNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEl(ptr noundef nonnull align 8 dereferenceable(32) %0, i64 noundef %21)
  %23 = zext i1 %22 to i64
  %24 = add nuw nsw i64 %20, %23
  %25 = add nsw i64 %1, 3
  %26 = tail call noundef zeroext i1 @_Z5checkRNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEl(ptr noundef nonnull align 8 dereferenceable(32) %0, i64 noundef %25)
  %27 = zext i1 %26 to i64
  %28 = add nuw nsw i64 %24, %27
  ret i64 %28
}

attributes #0 = { mustprogress 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" }

!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)"}


; Effective O3 passes: GVNPass,GlobalOptPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,LCSSAPass,LoopRotatePass,ReassociatePass,SROAPass,SimplifyCFGPass,TailCallElimPass