; LLVM IR from DionysiosB/CodeForces :: 0100-0199/146B-LuckyMask.ll (Z9luckyMaskl)

; 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 @_Z9luckyMaskl(i64 noundef %0) #0 {
  %2 = alloca i64, align 8
  %3 = alloca i64, align 8
  %4 = alloca i64, align 8
  store i64 %0, ptr %2, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %3) #2
  store i64 0, ptr %3, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %4) #2
  store i64 1, ptr %4, align 8, !tbaa !5
  br label %5

5:                                                ; preds = %25, %1
  %6 = load i64, ptr %2, align 8, !tbaa !5
  %7 = icmp sgt i64 %6, 0
  br i1 %7, label %8, label %28

8:                                                ; preds = %5
  %9 = load i64, ptr %2, align 8, !tbaa !5
  %10 = srem i64 %9, 10
  %11 = icmp eq i64 %10, 4
  br i1 %11, label %16, label %12

12:                                               ; preds = %8
  %13 = load i64, ptr %2, align 8, !tbaa !5
  %14 = srem i64 %13, 10
  %15 = icmp eq i64 %14, 7
  br i1 %15, label %16, label %25

16:                                               ; preds = %12, %8
  %17 = load i64, ptr %4, align 8, !tbaa !5
  %18 = load i64, ptr %2, align 8, !tbaa !5
  %19 = srem i64 %18, 10
  %20 = mul nsw i64 %17, %19
  %21 = load i64, ptr %3, align 8, !tbaa !5
  %22 = add nsw i64 %21, %20
  store i64 %22, ptr %3, align 8, !tbaa !5
  %23 = load i64, ptr %4, align 8, !tbaa !5
  %24 = mul nsw i64 %23, 10
  store i64 %24, ptr %4, align 8, !tbaa !5
  br label %25

25:                                               ; preds = %16, %12
  %26 = load i64, ptr %2, align 8, !tbaa !5
  %27 = sdiv i64 %26, 10
  store i64 %27, ptr %2, align 8, !tbaa !5
  br label %5, !llvm.loop !9

28:                                               ; preds = %5
  %29 = load i64, ptr %3, align 8, !tbaa !5
  call void @llvm.lifetime.end.p0(i64 8, ptr %4) #2
  call void @llvm.lifetime.end.p0(i64 8, ptr %3) #2
  ret i64 %29
}

; 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", !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 i64 @_Z9luckyMaskl(i64 noundef %0) local_unnamed_addr #0 {
  %2 = icmp sgt i64 %0, 0
  br i1 %2, label %.lr.ph, label %._crit_edge

.lr.ph:                                           ; preds = %1, %9
  %.015 = phi i64 [ %.1, %9 ], [ 1, %1 ]
  %.0914 = phi i64 [ %.110, %9 ], [ 0, %1 ]
  %.01113 = phi i64 [ %4, %9 ], [ %0, %1 ]
  %3 = urem i64 %.01113, 10
  %4 = udiv i64 %.01113, 10
  switch i64 %3, label %9 [
    i64 4, label %5
    i64 7, label %5
  ]

5:                                                ; preds = %.lr.ph, %.lr.ph
  %6 = mul nsw i64 %.015, %3
  %7 = add nsw i64 %6, %.0914
  %8 = mul nsw i64 %.015, 10
  br label %9

9:                                                ; preds = %.lr.ph, %5
  %.110 = phi i64 [ %7, %5 ], [ %.0914, %.lr.ph ]
  %.1 = phi i64 [ %8, %5 ], [ %.015, %.lr.ph ]
  %.not = icmp ult i64 %.01113, 10
  br i1 %.not, label %._crit_edge, label %.lr.ph, !llvm.loop !5

._crit_edge:                                      ; preds = %9, %1
  %.09.lcssa = phi i64 [ 0, %1 ], [ %.110, %9 ]
  ret i64 %.09.lcssa
}

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,EarlyCSEPass,GVNPass,GlobalOptPass,IPSCCPPass,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,JumpThreadingPass,LCSSAPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,ReassociatePass,SROAPass,SimplifyCFGPass