; LLVM IR from sunkafei/xcpc-algorithm-templates :: 算法/字符串算法 (回文自动机)

; 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"

@ch = external dso_local global [110000 x [26 x i32]], align 16
@len = external dso_local global [110000 x i32], align 16
@__const.main.A = external hidden unnamed_addr constant [7 x i32], align 16
@__const.main.B = external hidden unnamed_addr constant [3 x i32], align 4
@.str = external hidden unnamed_addr constant [4 x i8], align 1

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_Z4initv() #0

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_Z6extendi(i32 noundef) #0

; 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

; Function Attrs: mustprogress norecurse uwtable
define dso_local noundef i32 @main() #2 {
  %1 = alloca i32, align 4
  %2 = alloca [7 x i32], align 16
  %3 = alloca [3 x i32], align 4
  %4 = alloca i32, align 4
  %5 = alloca i32, align 4
  %6 = alloca i32, align 4
  store i32 0, ptr %1, align 4
  call void @llvm.lifetime.start.p0(i64 28, ptr %2) #5
  call void @llvm.memcpy.p0.p0.i64(ptr align 16 %2, ptr align 16 @__const.main.A, i64 28, i1 false)
  call void @llvm.lifetime.start.p0(i64 12, ptr %3) #5
  call void @llvm.memcpy.p0.p0.i64(ptr align 4 %3, ptr align 4 @__const.main.B, i64 12, i1 false)
  call void @_Z4initv()
  call void @llvm.lifetime.start.p0(i64 4, ptr %4) #5
  store i32 0, ptr %4, align 4, !tbaa !5
  br label %7

7:                                                ; preds = %17, %0
  %8 = load i32, ptr %4, align 4, !tbaa !5
  %9 = sext i32 %8 to i64
  %10 = icmp ult i64 %9, 7
  br i1 %10, label %12, label %11

11:                                               ; preds = %7
  call void @llvm.lifetime.end.p0(i64 4, ptr %4) #5
  br label %20

12:                                               ; preds = %7
  %13 = load i32, ptr %4, align 4, !tbaa !5
  %14 = sext i32 %13 to i64
  %15 = getelementptr inbounds [7 x i32], ptr %2, i64 0, i64 %14
  %16 = load i32, ptr %15, align 4, !tbaa !5
  call void @_Z6extendi(i32 noundef %16)
  br label %17

17:                                               ; preds = %12
  %18 = load i32, ptr %4, align 4, !tbaa !5
  %19 = add nsw i32 %18, 1
  store i32 %19, ptr %4, align 4, !tbaa !5
  br label %7, !llvm.loop !9

20:                                               ; preds = %11
  call void @llvm.lifetime.start.p0(i64 4, ptr %5) #5
  store i32 0, ptr %5, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %6) #5
  store i32 0, ptr %6, align 4, !tbaa !5
  br label %21

21:                                               ; preds = %37, %20
  %22 = load i32, ptr %6, align 4, !tbaa !5
  %23 = sext i32 %22 to i64
  %24 = icmp ult i64 %23, 3
  br i1 %24, label %26, label %25

25:                                               ; preds = %21
  call void @llvm.lifetime.end.p0(i64 4, ptr %6) #5
  br label %40

26:                                               ; preds = %21
  %27 = load i32, ptr %5, align 4, !tbaa !5
  %28 = sext i32 %27 to i64
  %29 = getelementptr inbounds [110000 x [26 x i32]], ptr @ch, i64 0, i64 %28
  %30 = load i32, ptr %6, align 4, !tbaa !5
  %31 = sext i32 %30 to i64
  %32 = getelementptr inbounds [3 x i32], ptr %3, i64 0, i64 %31
  %33 = load i32, ptr %32, align 4, !tbaa !5
  %34 = sext i32 %33 to i64
  %35 = getelementptr inbounds [26 x i32], ptr %29, i64 0, i64 %34
  %36 = load i32, ptr %35, align 4, !tbaa !5
  store i32 %36, ptr %5, align 4, !tbaa !5
  br label %37

37:                                               ; preds = %26
  %38 = load i32, ptr %6, align 4, !tbaa !5
  %39 = add nsw i32 %38, 1
  store i32 %39, ptr %6, align 4, !tbaa !5
  br label %21, !llvm.loop !11

40:                                               ; preds = %25
  %41 = load i32, ptr %5, align 4, !tbaa !5
  %42 = sext i32 %41 to i64
  %43 = getelementptr inbounds [110000 x i32], ptr @len, i64 0, i64 %42
  %44 = load i32, ptr %43, align 4, !tbaa !5
  %45 = call i32 (ptr, ...) @printf(ptr noundef @.str, i32 noundef %44)
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #5
  call void @llvm.lifetime.end.p0(i64 12, ptr %3) #5
  call void @llvm.lifetime.end.p0(i64 28, ptr %2) #5
  ret i32 0
}

; Function Attrs: nocallback nofree nounwind willreturn memory(argmem: readwrite)
declare void @llvm.memcpy.p0.p0.i64(ptr noalias nocapture writeonly, ptr noalias nocapture readonly, i64, i1 immarg) #3

declare i32 @printf(ptr noundef, ...) #4

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 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { mustprogress norecurse 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 = { nocallback nofree nounwind willreturn memory(argmem: readwrite) }
attributes #4 = { "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 }

!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 = distinct !{!9, !10}
!10 = !{!"llvm.loop.mustprogress"}
!11 = distinct !{!11, !10}


; 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"

@ch = external dso_local local_unnamed_addr global [110000 x [26 x i32]], align 16
@len = external dso_local local_unnamed_addr global [110000 x i32], align 16
@__const.main.A = external hidden unnamed_addr constant [7 x i32], align 16
@__const.main.B = external hidden unnamed_addr constant [3 x i32], align 4
@.str = external hidden unnamed_addr constant [4 x i8], align 1

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_Z4initv() local_unnamed_addr #0

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_Z6extendi(i32 noundef) local_unnamed_addr #0

; Function Attrs: mustprogress norecurse nounwind uwtable
define dso_local noundef i32 @main() local_unnamed_addr #1 {
.preheader.preheader:
  tail call void @_Z4initv()
  %0 = load i32, ptr @__const.main.A, align 16, !tbaa !5
  tail call void @_Z6extendi(i32 noundef %0)
  %1 = load i32, ptr getelementptr inbounds (i8, ptr @__const.main.A, i64 4), align 4, !tbaa !5
  tail call void @_Z6extendi(i32 noundef %1)
  %2 = load i32, ptr getelementptr inbounds (i8, ptr @__const.main.A, i64 8), align 8, !tbaa !5
  tail call void @_Z6extendi(i32 noundef %2)
  %3 = load i32, ptr getelementptr inbounds (i8, ptr @__const.main.A, i64 12), align 4, !tbaa !5
  tail call void @_Z6extendi(i32 noundef %3)
  %4 = load i32, ptr getelementptr inbounds (i8, ptr @__const.main.A, i64 16), align 16, !tbaa !5
  tail call void @_Z6extendi(i32 noundef %4)
  %5 = load i32, ptr getelementptr inbounds (i8, ptr @__const.main.A, i64 20), align 4, !tbaa !5
  tail call void @_Z6extendi(i32 noundef %5)
  %6 = load i32, ptr getelementptr inbounds (i8, ptr @__const.main.A, i64 24), align 8, !tbaa !5
  tail call void @_Z6extendi(i32 noundef %6)
  %7 = load i32, ptr @__const.main.B, align 4, !tbaa !5
  %8 = sext i32 %7 to i64
  %9 = getelementptr inbounds [110000 x [26 x i32]], ptr @ch, i64 0, i64 0, i64 %8
  %10 = load i32, ptr %9, align 4, !tbaa !5
  %11 = sext i32 %10 to i64
  %12 = load i32, ptr getelementptr inbounds (i8, ptr @__const.main.B, i64 4), align 4, !tbaa !5
  %13 = sext i32 %12 to i64
  %14 = getelementptr inbounds [110000 x [26 x i32]], ptr @ch, i64 0, i64 %11, i64 %13
  %15 = load i32, ptr %14, align 4, !tbaa !5
  %16 = sext i32 %15 to i64
  %17 = load i32, ptr getelementptr inbounds (i8, ptr @__const.main.B, i64 8), align 4, !tbaa !5
  %18 = sext i32 %17 to i64
  %19 = getelementptr inbounds [110000 x [26 x i32]], ptr @ch, i64 0, i64 %16, i64 %18
  %20 = load i32, ptr %19, align 4, !tbaa !5
  %21 = sext i32 %20 to i64
  %22 = getelementptr inbounds [110000 x i32], ptr @len, i64 0, i64 %21
  %23 = load i32, ptr %22, align 4, !tbaa !5
  %24 = tail call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str, i32 noundef %23)
  ret i32 0
}

; Function Attrs: nofree nounwind
declare noundef i32 @printf(ptr nocapture noundef readonly, ...) local_unnamed_addr #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 = { mustprogress norecurse 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 = { nofree 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" }

!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"}


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