; LLVM IR from DionysiosB/CodeForces :: 0200-0299/204A-LittleElephantAndInterval.ll (Z14countSymmetricx)

; 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 nounwind uwtable
define dso_local noundef i64 @_Z14countSymmetricx(i64 noundef %0) #0 {
  %2 = alloca i64, align 8
  %3 = alloca i64, align 8
  %4 = alloca i64, align 8
  %5 = alloca i64, align 8
  %6 = alloca i64, align 8
  store i64 %0, ptr %3, align 8, !tbaa !5
  %7 = load i64, ptr %3, align 8, !tbaa !5
  %8 = icmp slt i64 %7, 10
  br i1 %8, label %9, label %11

9:                                                ; preds = %1
  %10 = load i64, ptr %3, align 8, !tbaa !5
  store i64 %10, ptr %2, align 8
  br label %33

11:                                               ; preds = %1
  call void @llvm.lifetime.start.p0(i64 8, ptr %4) #2
  %12 = load i64, ptr %3, align 8, !tbaa !5
  %13 = sdiv i64 %12, 10
  %14 = add nsw i64 %13, 9
  store i64 %14, ptr %4, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %5) #2
  %15 = load i64, ptr %3, align 8, !tbaa !5
  store i64 %15, ptr %5, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %6) #2
  %16 = load i64, ptr %3, align 8, !tbaa !5
  %17 = srem i64 %16, 10
  store i64 %17, ptr %6, align 8, !tbaa !5
  br label %18

18:                                               ; preds = %21, %11
  %19 = load i64, ptr %5, align 8, !tbaa !5
  %20 = icmp sge i64 %19, 10
  br i1 %20, label %21, label %24

21:                                               ; preds = %18
  %22 = load i64, ptr %5, align 8, !tbaa !5
  %23 = sdiv i64 %22, 10
  store i64 %23, ptr %5, align 8, !tbaa !5
  br label %18, !llvm.loop !9

24:                                               ; preds = %18
  %25 = load i64, ptr %5, align 8, !tbaa !5
  %26 = load i64, ptr %6, align 8, !tbaa !5
  %27 = icmp sgt i64 %25, %26
  br i1 %27, label %28, label %31

28:                                               ; preds = %24
  %29 = load i64, ptr %4, align 8, !tbaa !5
  %30 = add nsw i64 %29, -1
  store i64 %30, ptr %4, align 8, !tbaa !5
  br label %31

31:                                               ; preds = %28, %24
  %32 = load i64, ptr %4, align 8, !tbaa !5
  store i64 %32, ptr %2, align 8
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #2
  call void @llvm.lifetime.end.p0(i64 8, ptr %5) #2
  call void @llvm.lifetime.end.p0(i64 8, ptr %4) #2
  br label %33

33:                                               ; preds = %31, %9
  %34 = load i64, ptr %2, align 8
  ret i64 %34
}

; 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 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 = { 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 = !{!"long long", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = distinct !{!9, !10}
!10 = !{!"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 nofree norecurse nosync nounwind willreturn memory(none) uwtable
define dso_local noundef range(i64 -9223372036854775808, 922337203685477590) i64 @_Z14countSymmetricx(i64 noundef %0) local_unnamed_addr #0 {
  %2 = icmp slt i64 %0, 10
  br i1 %2, label %11, label %3

3:                                                ; preds = %1
  %4 = udiv i64 %0, 10
  %5 = urem i64 %0, 10
  br label %6

6:                                                ; preds = %3, %6
  %.01215 = phi i64 [ %0, %3 ], [ %7, %6 ]
  %7 = udiv i64 %.01215, 10
  %8 = icmp ugt i64 %.01215, 99
  br i1 %8, label %6, label %9, !llvm.loop !5

9:                                                ; preds = %6
  %10 = icmp ugt i64 %7, %5
  %spec.select.v = select i1 %10, i64 8, i64 9
  %spec.select = add nuw nsw i64 %spec.select.v, %4
  br label %11

11:                                               ; preds = %1, %9
  %.0 = phi i64 [ %spec.select, %9 ], [ %0, %1 ]
  ret i64 %.0
}

attributes #0 = { mustprogress nofree norecurse nosync nounwind willreturn memory(none) 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)"}
!5 = distinct !{!5, !6}
!6 = !{!"llvm.loop.mustprogress"}


; Effective O3 passes: DivRemPairsPass,GVNPass,GlobalOptPass,IPSCCPPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,LCSSAPass,LoopRotatePass,LoopUnrollPass,PostOrderFunctionAttrsPass,ReassociatePass,SROAPass,SimplifyCFGPass