; LLVM IR from viveakrt/Competitive-programing :: CodeChef/CHEFORA_Chef vs Bharat.ll (Z7cheforax)

; 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: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: mustprogress nounwind uwtable
define dso_local noundef i64 @_Z7cheforax(i64 noundef %0) #1 {
  %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
  %5 = load i64, ptr %2, align 8, !tbaa !5
  store i64 %5, ptr %3, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %4) #2
  store i64 0, ptr %4, align 8, !tbaa !5
  %6 = load i64, ptr %2, align 8, !tbaa !5
  %7 = icmp slt i64 %6, 10
  br i1 %7, label %8, label %10

8:                                                ; preds = %1
  %9 = load i64, ptr %3, align 8, !tbaa !5
  store i64 %9, ptr %4, align 8, !tbaa !5
  br label %30

10:                                               ; preds = %1
  %11 = load i64, ptr %2, align 8, !tbaa !5
  %12 = icmp sge i64 %11, 10
  br i1 %12, label %13, label %29

13:                                               ; preds = %10
  %14 = load i64, ptr %2, align 8, !tbaa !5
  %15 = sdiv i64 %14, 10
  store i64 %15, ptr %2, align 8, !tbaa !5
  br label %16

16:                                               ; preds = %19, %13
  %17 = load i64, ptr %2, align 8, !tbaa !5
  %18 = icmp ne i64 %17, 0
  br i1 %18, label %19, label %27

19:                                               ; preds = %16
  %20 = load i64, ptr %3, align 8, !tbaa !5
  %21 = mul nsw i64 %20, 10
  %22 = load i64, ptr %2, align 8, !tbaa !5
  %23 = srem i64 %22, 10
  %24 = add nsw i64 %21, %23
  store i64 %24, ptr %3, align 8, !tbaa !5
  %25 = load i64, ptr %2, align 8, !tbaa !5
  %26 = sdiv i64 %25, 10
  store i64 %26, ptr %2, align 8, !tbaa !5
  br label %16, !llvm.loop !9

27:                                               ; preds = %16
  %28 = load i64, ptr %3, align 8, !tbaa !5
  store i64 %28, ptr %4, align 8, !tbaa !5
  br label %29

29:                                               ; preds = %27, %10
  br label %30

30:                                               ; preds = %29, %8
  %31 = load i64, ptr %4, 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 %31
}

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { 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 #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 i64 @_Z7cheforax(i64 noundef %0) local_unnamed_addr #0 {
  %2 = icmp slt i64 %0, 10
  br i1 %2, label %.loopexit, label %.preheader

.preheader:                                       ; preds = %1, %.preheader
  %.01115 = phi i64 [ %5, %.preheader ], [ %0, %1 ]
  %.012.in14 = phi i64 [ %.012, %.preheader ], [ %0, %1 ]
  %.012 = udiv i64 %.012.in14, 10
  %3 = mul nsw i64 %.01115, 10
  %4 = urem i64 %.012, 10
  %5 = add nsw i64 %3, %4
  %.not = icmp ult i64 %.012.in14, 100
  br i1 %.not, label %.loopexit, label %.preheader, !llvm.loop !5

.loopexit:                                        ; preds = %.preheader, %1
  %.0 = phi i64 [ %0, %1 ], [ %5, %.preheader ]
  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: EarlyCSEPass,GVNPass,GlobalOptPass,IPSCCPPass,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,JumpThreadingPass,LCSSAPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass