; LLVM IR from lzyrapx/Competitive-Programming :: Retired_code/String (BZOJ 1009 （AC自动机+矩阵乘法优化dp）)

; 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"

@End = external dso_local global [1000100 x i32], align 16
@ch = external dso_local global [1000100 x [26 x i32]], align 16
@sz = external dso_local global i32, align 4

; 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 void @_Z6insertNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEE(ptr noundef %0) #1 {
  %2 = alloca ptr, align 8
  %3 = alloca i32, align 4
  %4 = alloca i32, align 4
  %5 = alloca i32, align 4
  store ptr %0, ptr %2, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %3) #3
  store i32 0, ptr %3, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %4) #3
  store i32 0, ptr %4, align 4, !tbaa !9
  br label %6

6:                                                ; preds = %44, %1
  %7 = load i32, ptr %4, align 4, !tbaa !9
  %8 = call noundef i64 @_ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(32) %0) #3
  %9 = trunc i64 %8 to i32
  %10 = icmp slt i32 %7, %9
  br i1 %10, label %12, label %11

11:                                               ; preds = %6
  call void @llvm.lifetime.end.p0(i64 4, ptr %4) #3
  br label %47

12:                                               ; preds = %6
  call void @llvm.lifetime.start.p0(i64 4, ptr %5) #3
  %13 = load i32, ptr %4, align 4, !tbaa !9
  %14 = sext i32 %13 to i64
  %15 = call noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEixEm(ptr noundef nonnull align 8 dereferenceable(32) %0, i64 noundef %14)
  %16 = load i8, ptr %15, align 1, !tbaa !11
  %17 = sext i8 %16 to i32
  %18 = sub nsw i32 %17, 48
  store i32 %18, ptr %5, align 4, !tbaa !9
  %19 = load i32, ptr %3, align 4, !tbaa !9
  %20 = sext i32 %19 to i64
  %21 = getelementptr inbounds [1000100 x [26 x i32]], ptr @ch, i64 0, i64 %20
  %22 = load i32, ptr %5, align 4, !tbaa !9
  %23 = sext i32 %22 to i64
  %24 = getelementptr inbounds [26 x i32], ptr %21, i64 0, i64 %23
  %25 = load i32, ptr %24, align 4, !tbaa !9
  %26 = icmp ne i32 %25, 0
  br i1 %26, label %36, label %27

27:                                               ; preds = %12
  %28 = load i32, ptr @sz, align 4, !tbaa !9
  %29 = add nsw i32 %28, 1
  store i32 %29, ptr @sz, align 4, !tbaa !9
  %30 = load i32, ptr %3, align 4, !tbaa !9
  %31 = sext i32 %30 to i64
  %32 = getelementptr inbounds [1000100 x [26 x i32]], ptr @ch, i64 0, i64 %31
  %33 = load i32, ptr %5, align 4, !tbaa !9
  %34 = sext i32 %33 to i64
  %35 = getelementptr inbounds [26 x i32], ptr %32, i64 0, i64 %34
  store i32 %29, ptr %35, align 4, !tbaa !9
  br label %36

36:                                               ; preds = %27, %12
  %37 = load i32, ptr %3, align 4, !tbaa !9
  %38 = sext i32 %37 to i64
  %39 = getelementptr inbounds [1000100 x [26 x i32]], ptr @ch, i64 0, i64 %38
  %40 = load i32, ptr %5, align 4, !tbaa !9
  %41 = sext i32 %40 to i64
  %42 = getelementptr inbounds [26 x i32], ptr %39, i64 0, i64 %41
  %43 = load i32, ptr %42, align 4, !tbaa !9
  store i32 %43, ptr %3, align 4, !tbaa !9
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #3
  br label %44

44:                                               ; preds = %36
  %45 = load i32, ptr %4, align 4, !tbaa !9
  %46 = add nsw i32 %45, 1
  store i32 %46, ptr %4, align 4, !tbaa !9
  br label %6, !llvm.loop !12

47:                                               ; preds = %11
  %48 = load i32, ptr %3, align 4, !tbaa !9
  %49 = sext i32 %48 to i64
  %50 = getelementptr inbounds [1000100 x i32], ptr @End, i64 0, i64 %49
  store i32 1, ptr %50, align 4, !tbaa !9
  call void @llvm.lifetime.end.p0(i64 4, ptr %3) #3
  ret void
}

; 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 = !{!"int", !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"

@End = external dso_local local_unnamed_addr global [1000100 x i32], align 16
@ch = external dso_local local_unnamed_addr global [1000100 x [26 x i32]], align 16
@sz = external dso_local local_unnamed_addr global i32, align 4

; Function Attrs: mustprogress nounwind uwtable
define dso_local void @_Z6insertNSt7__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 = trunc i64 %2 to i32
  %4 = icmp sgt i32 %3, 0
  br i1 %4, label %.lr.ph, label %._crit_edge

._crit_edge.loopexit:                             ; preds = %17
  %5 = sext i32 %18 to i64
  br label %._crit_edge

._crit_edge:                                      ; preds = %._crit_edge.loopexit, %1
  %.0.lcssa = phi i64 [ 0, %1 ], [ %5, %._crit_edge.loopexit ]
  %6 = getelementptr inbounds [1000100 x i32], ptr @End, i64 0, i64 %.0.lcssa
  store i32 1, ptr %6, align 4, !tbaa !5
  ret void

.lr.ph:                                           ; preds = %1, %17
  %indvars.iv = phi i64 [ %indvars.iv.next, %17 ], [ 0, %1 ]
  %.012 = phi i32 [ %18, %17 ], [ 0, %1 ]
  %7 = tail call noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEixEm(ptr noundef nonnull align 8 dereferenceable(32) %0, i64 noundef %indvars.iv)
  %8 = load i8, ptr %7, align 1, !tbaa !9
  %9 = sext i8 %8 to i64
  %10 = add nsw i64 %9, -48
  %11 = sext i32 %.012 to i64
  %12 = getelementptr inbounds [1000100 x [26 x i32]], ptr @ch, i64 0, i64 %11, i64 %10
  %13 = load i32, ptr %12, align 4, !tbaa !5
  %.not = icmp eq i32 %13, 0
  br i1 %.not, label %14, label %17

14:                                               ; preds = %.lr.ph
  %15 = load i32, ptr @sz, align 4, !tbaa !5
  %16 = add nsw i32 %15, 1
  store i32 %16, ptr @sz, align 4, !tbaa !5
  store i32 %16, ptr %12, align 4, !tbaa !5
  br label %17

17:                                               ; preds = %14, %.lr.ph
  %18 = phi i32 [ %16, %14 ], [ %13, %.lr.ph ]
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %19 = tail call noundef i64 @_ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(32) %0) #1
  %sext = shl i64 %19, 32
  %20 = ashr exact i64 %sext, 32
  %21 = icmp slt i64 %indvars.iv.next, %20
  br i1 %21, label %.lr.ph, label %._crit_edge.loopexit, !llvm.loop !10
}

; 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 = !{!"int", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = !{!7, !7, i64 0}
!10 = distinct !{!10, !11}
!11 = !{!"llvm.loop.mustprogress"}


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