; LLVM IR from DionysiosB/CodeForces :: 1300-1399/1355A-SequenceWithDigits.ll (Z10getProductx)

; 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 i32 @_Z10getProductx(i64 noundef %0) #0 {
  %2 = alloca i64, align 8
  %3 = alloca i32, align 4
  %4 = alloca i32, align 4
  %5 = alloca i32, align 4
  store i64 %0, ptr %2, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %3) #2
  store i32 10, ptr %3, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %4) #2
  store i32 0, ptr %4, align 4, !tbaa !9
  br label %6

6:                                                ; preds = %29, %1
  %7 = load i64, ptr %2, align 8, !tbaa !5
  %8 = icmp sgt i64 %7, 0
  br i1 %8, label %9, label %33

9:                                                ; preds = %6
  call void @llvm.lifetime.start.p0(i64 4, ptr %5) #2
  %10 = load i64, ptr %2, align 8, !tbaa !5
  %11 = srem i64 %10, 10
  %12 = trunc i64 %11 to i32
  store i32 %12, ptr %5, align 4, !tbaa !9
  %13 = load i32, ptr %3, align 4, !tbaa !9
  %14 = load i32, ptr %5, align 4, !tbaa !9
  %15 = icmp slt i32 %13, %14
  br i1 %15, label %16, label %18

16:                                               ; preds = %9
  %17 = load i32, ptr %3, align 4, !tbaa !9
  br label %20

18:                                               ; preds = %9
  %19 = load i32, ptr %5, align 4, !tbaa !9
  br label %20

20:                                               ; preds = %18, %16
  %21 = phi i32 [ %17, %16 ], [ %19, %18 ]
  store i32 %21, ptr %3, align 4, !tbaa !9
  %22 = load i32, ptr %4, align 4, !tbaa !9
  %23 = load i32, ptr %5, align 4, !tbaa !9
  %24 = icmp sgt i32 %22, %23
  br i1 %24, label %25, label %27

25:                                               ; preds = %20
  %26 = load i32, ptr %4, align 4, !tbaa !9
  br label %29

27:                                               ; preds = %20
  %28 = load i32, ptr %5, align 4, !tbaa !9
  br label %29

29:                                               ; preds = %27, %25
  %30 = phi i32 [ %26, %25 ], [ %28, %27 ]
  store i32 %30, ptr %4, align 4, !tbaa !9
  %31 = load i64, ptr %2, align 8, !tbaa !5
  %32 = sdiv i64 %31, 10
  store i64 %32, ptr %2, align 8, !tbaa !5
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #2
  br label %6, !llvm.loop !11

33:                                               ; preds = %6
  %34 = load i32, ptr %3, align 4, !tbaa !9
  %35 = load i32, ptr %4, align 4, !tbaa !9
  %36 = mul nsw i32 %34, %35
  call void @llvm.lifetime.end.p0(i64 4, ptr %4) #2
  call void @llvm.lifetime.end.p0(i64 4, ptr %3) #2
  ret i32 %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 = !{!10, !10, i64 0}
!10 = !{!"int", !7, i64 0}
!11 = distinct !{!11, !12}
!12 = !{!"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(i32 0, 91) i32 @_Z10getProductx(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, %.lr.ph
  %.017 = phi i64 [ %7, %.lr.ph ], [ %0, %1 ]
  %.01316 = phi i32 [ %6, %.lr.ph ], [ 0, %1 ]
  %.01415 = phi i32 [ %5, %.lr.ph ], [ 10, %1 ]
  %3 = urem i64 %.017, 10
  %4 = trunc nuw nsw i64 %3 to i32
  %5 = tail call i32 @llvm.smin.i32(i32 %.01415, i32 %4)
  %6 = tail call i32 @llvm.smax.i32(i32 %.01316, i32 %4)
  %7 = udiv i64 %.017, 10
  %.not = icmp ult i64 %.017, 10
  br i1 %.not, label %._crit_edge.loopexit, label %.lr.ph, !llvm.loop !5

._crit_edge.loopexit:                             ; preds = %.lr.ph
  %8 = mul nuw nsw i32 %6, %5
  br label %._crit_edge

._crit_edge:                                      ; preds = %._crit_edge.loopexit, %1
  %9 = phi i32 [ 0, %1 ], [ %8, %._crit_edge.loopexit ]
  ret i32 %9
}

; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)
declare i32 @llvm.smin.i32(i32, i32) #1

; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)
declare i32 @llvm.smax.i32(i32, i32) #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,IPSCCPPass,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,LCSSAPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,ReassociatePass,SROAPass,SimplifyCFGPass,TailCallElimPass