; LLVM IR from DionysiosB/CodeForces :: 0900-0999/991C-Candies.ll (Z5checkxx)

; 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 zeroext i1 @_Z5checkxx(i64 noundef %0, i64 noundef %1) #0 {
  %3 = alloca i64, align 8
  %4 = alloca i64, align 8
  %5 = alloca i64, align 8
  %6 = alloca i64, align 8
  %7 = alloca i64, align 8
  store i64 %0, ptr %3, align 8, !tbaa !5
  store i64 %1, ptr %4, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %5) #2
  store i64 0, ptr %5, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %6) #2
  %8 = load i64, ptr %3, align 8, !tbaa !5
  store i64 %8, ptr %6, align 8, !tbaa !5
  br label %9

9:                                                ; preds = %20, %2
  %10 = load i64, ptr %6, align 8, !tbaa !5
  %11 = icmp sgt i64 %10, 0
  br i1 %11, label %12, label %32

12:                                               ; preds = %9
  call void @llvm.lifetime.start.p0(i64 8, ptr %7) #2
  %13 = load i64, ptr %6, align 8, !tbaa !5
  %14 = load i64, ptr %4, align 8, !tbaa !5
  %15 = icmp slt i64 %13, %14
  br i1 %15, label %16, label %18

16:                                               ; preds = %12
  %17 = load i64, ptr %6, align 8, !tbaa !5
  br label %20

18:                                               ; preds = %12
  %19 = load i64, ptr %4, align 8, !tbaa !5
  br label %20

20:                                               ; preds = %18, %16
  %21 = phi i64 [ %17, %16 ], [ %19, %18 ]
  store i64 %21, ptr %7, align 8, !tbaa !5
  %22 = load i64, ptr %7, align 8, !tbaa !5
  %23 = load i64, ptr %5, align 8, !tbaa !5
  %24 = add nsw i64 %23, %22
  store i64 %24, ptr %5, align 8, !tbaa !5
  %25 = load i64, ptr %7, align 8, !tbaa !5
  %26 = load i64, ptr %6, align 8, !tbaa !5
  %27 = sub nsw i64 %26, %25
  store i64 %27, ptr %6, align 8, !tbaa !5
  %28 = load i64, ptr %6, align 8, !tbaa !5
  %29 = sdiv i64 %28, 10
  %30 = load i64, ptr %6, align 8, !tbaa !5
  %31 = sub nsw i64 %30, %29
  store i64 %31, ptr %6, align 8, !tbaa !5
  call void @llvm.lifetime.end.p0(i64 8, ptr %7) #2
  br label %9, !llvm.loop !9

32:                                               ; preds = %9
  %33 = load i64, ptr %5, align 8, !tbaa !5
  %34 = mul nsw i64 2, %33
  %35 = load i64, ptr %3, align 8, !tbaa !5
  %36 = icmp sge i64 %34, %35
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #2
  call void @llvm.lifetime.end.p0(i64 8, ptr %5) #2
  ret i1 %36
}

; 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 zeroext i1 @_Z5checkxx(i64 noundef %0, i64 noundef %1) local_unnamed_addr #0 {
  %3 = icmp sgt i64 %0, 0
  br i1 %3, label %.lr.ph, label %._crit_edge

.lr.ph:                                           ; preds = %2, %.lr.ph
  %.016 = phi i64 [ %5, %.lr.ph ], [ 0, %2 ]
  %.01415 = phi i64 [ %7, %.lr.ph ], [ %0, %2 ]
  %4 = tail call i64 @llvm.smin.i64(i64 %.01415, i64 %1)
  %5 = add nsw i64 %.016, %4
  %6 = sub nsw i64 %.01415, %4
  %.neg = sdiv i64 %6, -10
  %7 = add i64 %.neg, %6
  %8 = icmp sgt i64 %7, 0
  br i1 %8, label %.lr.ph, label %._crit_edge.loopexit, !llvm.loop !5

._crit_edge.loopexit:                             ; preds = %.lr.ph
  %9 = shl nsw i64 %5, 1
  br label %._crit_edge

._crit_edge:                                      ; preds = %._crit_edge.loopexit, %2
  %.0.lcssa = phi i64 [ 0, %2 ], [ %9, %._crit_edge.loopexit ]
  %10 = icmp sge i64 %.0.lcssa, %0
  ret i1 %10
}

; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)
declare i64 @llvm.smin.i64(i64, i64) #1

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" }
attributes #1 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }

!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: GVNPass,GlobalOptPass,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,LCSSAPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass,TailCallElimPass