; LLVM IR from AdarshGaur/Competitive-Programming :: Codeforces/CodeCraft-22 and Codeforces Round #795 (Div. 2)/C. Sum of Substrings/faf6c78d/Z1fNSt7 (traitsIcESaIcEEE)

; 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 uwtable
define dso_local noundef i64 @_Z1fNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEE(ptr noundef %0) #1 {
  %2 = alloca ptr, align 8
  %3 = alloca i64, align 8
  %4 = alloca i64, align 8
  store ptr %0, ptr %2, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %3) #3
  store i64 0, ptr %3, align 8, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 8, ptr %4) #3
  store i64 0, ptr %4, align 8, !tbaa !9
  br label %5

5:                                                ; preds = %62, %1
  %6 = load i64, ptr %4, align 8, !tbaa !9
  %7 = call noundef i64 @_ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(32) %0) #3
  %8 = sub nsw i64 %7, 1
  %9 = icmp slt i64 %6, %8
  br i1 %9, label %11, label %10

10:                                               ; preds = %5
  call void @llvm.lifetime.end.p0(i64 8, ptr %4) #3
  br label %65

11:                                               ; preds = %5
  %12 = load i64, ptr %4, align 8, !tbaa !9
  %13 = call noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEixEm(ptr noundef nonnull align 8 dereferenceable(32) %0, i64 noundef %12)
  %14 = load i8, ptr %13, align 1, !tbaa !11
  %15 = sext i8 %14 to i32
  %16 = icmp eq i32 %15, 48
  br i1 %16, label %17, label %27

17:                                               ; preds = %11
  %18 = load i64, ptr %4, align 8, !tbaa !9
  %19 = add nsw i64 %18, 1
  %20 = call noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEixEm(ptr noundef nonnull align 8 dereferenceable(32) %0, i64 noundef %19)
  %21 = load i8, ptr %20, align 1, !tbaa !11
  %22 = sext i8 %21 to i32
  %23 = icmp eq i32 %22, 49
  br i1 %23, label %24, label %27

24:                                               ; preds = %17
  %25 = load i64, ptr %3, align 8, !tbaa !9
  %26 = add nsw i64 %25, 1
  store i64 %26, ptr %3, align 8, !tbaa !9
  br label %61

27:                                               ; preds = %17, %11
  %28 = load i64, ptr %4, align 8, !tbaa !9
  %29 = call noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEixEm(ptr noundef nonnull align 8 dereferenceable(32) %0, i64 noundef %28)
  %30 = load i8, ptr %29, align 1, !tbaa !11
  %31 = sext i8 %30 to i32
  %32 = icmp eq i32 %31, 49
  br i1 %32, label %33, label %43

33:                                               ; preds = %27
  %34 = load i64, ptr %4, align 8, !tbaa !9
  %35 = add nsw i64 %34, 1
  %36 = call noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEixEm(ptr noundef nonnull align 8 dereferenceable(32) %0, i64 noundef %35)
  %37 = load i8, ptr %36, align 1, !tbaa !11
  %38 = sext i8 %37 to i32
  %39 = icmp eq i32 %38, 49
  br i1 %39, label %40, label %43

40:                                               ; preds = %33
  %41 = load i64, ptr %3, align 8, !tbaa !9
  %42 = add nsw i64 %41, 11
  store i64 %42, ptr %3, align 8, !tbaa !9
  br label %60

43:                                               ; preds = %33, %27
  %44 = load i64, ptr %4, align 8, !tbaa !9
  %45 = call noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEixEm(ptr noundef nonnull align 8 dereferenceable(32) %0, i64 noundef %44)
  %46 = load i8, ptr %45, align 1, !tbaa !11
  %47 = sext i8 %46 to i32
  %48 = icmp eq i32 %47, 49
  br i1 %48, label %49, label %59

49:                                               ; preds = %43
  %50 = load i64, ptr %4, align 8, !tbaa !9
  %51 = add nsw i64 %50, 1
  %52 = call noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEixEm(ptr noundef nonnull align 8 dereferenceable(32) %0, i64 noundef %51)
  %53 = load i8, ptr %52, align 1, !tbaa !11
  %54 = sext i8 %53 to i32
  %55 = icmp eq i32 %54, 48
  br i1 %55, label %56, label %59

56:                                               ; preds = %49
  %57 = load i64, ptr %3, align 8, !tbaa !9
  %58 = add nsw i64 %57, 10
  store i64 %58, ptr %3, align 8, !tbaa !9
  br label %59

59:                                               ; preds = %56, %49, %43
  br label %60

60:                                               ; preds = %59, %40
  br label %61

61:                                               ; preds = %60, %24
  br label %62

62:                                               ; preds = %61
  %63 = load i64, ptr %4, align 8, !tbaa !9
  %64 = add nsw i64 %63, 1
  store i64 %64, ptr %4, align 8, !tbaa !9
  br label %5, !llvm.loop !12

65:                                               ; preds = %10
  %66 = load i64, ptr %3, align 8, !tbaa !9
  call void @llvm.lifetime.end.p0(i64 8, ptr %3) #3
  ret i64 %66
}

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

; Function Attrs: mustprogress nounwind uwtable
declare noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEixEm(ptr noundef nonnull align 8 dereferenceable(32), i64 noundef) #2 align 2

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { 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 #2 = { 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 #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++ 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
define dso_local noundef i64 @_Z1fNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEE(ptr noundef nonnull %0) local_unnamed_addr #0 {
  %2 = tail call noundef i64 @_ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(32) %0) #1
  %3 = icmp sgt i64 %2, 1
  br i1 %3, label %.lr.ph, label %._crit_edge

._crit_edge:                                      ; preds = %._crit_edge16, %1
  %.012.lcssa = phi i64 [ 0, %1 ], [ %.1, %._crit_edge16 ]
  ret i64 %.012.lcssa

.lr.ph:                                           ; preds = %1, %._crit_edge16
  %.014 = phi i64 [ %.pre-phi, %._crit_edge16 ], [ 0, %1 ]
  %.01213 = phi i64 [ %.1, %._crit_edge16 ], [ 0, %1 ]
  %4 = tail call noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEixEm(ptr noundef nonnull align 8 dereferenceable(32) %0, i64 noundef %.014)
  %5 = load i8, ptr %4, align 1, !tbaa !5
  %6 = icmp eq i8 %5, 48
  br i1 %6, label %7, label %14

7:                                                ; preds = %.lr.ph
  %8 = add nuw nsw i64 %.014, 1
  %9 = tail call noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEixEm(ptr noundef nonnull align 8 dereferenceable(32) %0, i64 noundef %8)
  %10 = load i8, ptr %9, align 1, !tbaa !5
  %11 = icmp eq i8 %10, 49
  br i1 %11, label %12, label %14

12:                                               ; preds = %7
  %13 = add nsw i64 %.01213, 1
  br label %._crit_edge16

14:                                               ; preds = %7, %.lr.ph
  %15 = tail call noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEixEm(ptr noundef nonnull align 8 dereferenceable(32) %0, i64 noundef %.014)
  %16 = load i8, ptr %15, align 1, !tbaa !5
  %17 = icmp eq i8 %16, 49
  br i1 %17, label %18, label %25

18:                                               ; preds = %14
  %19 = add nuw nsw i64 %.014, 1
  %20 = tail call noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEixEm(ptr noundef nonnull align 8 dereferenceable(32) %0, i64 noundef %19)
  %21 = load i8, ptr %20, align 1, !tbaa !5
  %22 = icmp eq i8 %21, 49
  br i1 %22, label %23, label %25

23:                                               ; preds = %18
  %24 = add nsw i64 %.01213, 11
  br label %._crit_edge16

25:                                               ; preds = %18, %14
  %26 = tail call noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEixEm(ptr noundef nonnull align 8 dereferenceable(32) %0, i64 noundef %.014)
  %27 = load i8, ptr %26, align 1, !tbaa !5
  %28 = icmp eq i8 %27, 49
  %29 = add nuw nsw i64 %.014, 1
  br i1 %28, label %30, label %._crit_edge16

30:                                               ; preds = %25
  %31 = tail call noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEixEm(ptr noundef nonnull align 8 dereferenceable(32) %0, i64 noundef %29)
  %32 = load i8, ptr %31, align 1, !tbaa !5
  %33 = icmp eq i8 %32, 48
  %34 = add nsw i64 %.01213, 10
  %spec.select = select i1 %33, i64 %34, i64 %.01213
  br label %._crit_edge16

._crit_edge16:                                    ; preds = %25, %30, %12, %23
  %.pre-phi = phi i64 [ %29, %30 ], [ %8, %12 ], [ %19, %23 ], [ %29, %25 ]
  %.1 = phi i64 [ %spec.select, %30 ], [ %13, %12 ], [ %24, %23 ], [ %.01213, %25 ]
  %35 = tail call noundef i64 @_ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(32) %0) #1
  %36 = add nsw i64 %35, -1
  %37 = icmp slt i64 %.pre-phi, %36
  br i1 %37, label %.lr.ph, label %._crit_edge, !llvm.loop !8
}

; 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 @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEixEm(ptr noundef nonnull align 8 dereferenceable(32), 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: GVNPass,GlobalOptPass,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,JumpThreadingPass,LCSSAPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass,TailCallElimPass