; LLVM IR from VastoLorde95/Competitive-Programming :: CodeChef/SHORT/COOK72/Problem B/B.ll (Z2okii)

; 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 @_Z2okii(i32 noundef %0, i32 noundef %1) #0 {
  %3 = alloca i32, align 4
  %4 = alloca i32, align 4
  %5 = alloca i32, align 4
  %6 = alloca i32, align 4
  store i32 %0, ptr %3, align 4, !tbaa !5
  store i32 %1, ptr %4, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %5) #2
  %7 = load i32, ptr %3, align 4, !tbaa !5
  store i32 %7, ptr %5, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %6) #2
  store i32 0, ptr %6, align 4, !tbaa !5
  br label %8

8:                                                ; preds = %11, %2
  %9 = load i32, ptr %3, align 4, !tbaa !5
  %10 = icmp ne i32 %9, 0
  br i1 %10, label %11, label %18

11:                                               ; preds = %8
  %12 = load i32, ptr %3, align 4, !tbaa !5
  %13 = srem i32 %12, 10
  %14 = load i32, ptr %6, align 4, !tbaa !5
  %15 = add nsw i32 %14, %13
  store i32 %15, ptr %6, align 4, !tbaa !5
  %16 = load i32, ptr %3, align 4, !tbaa !5
  %17 = sdiv i32 %16, 10
  store i32 %17, ptr %3, align 4, !tbaa !5
  br label %8, !llvm.loop !9

18:                                               ; preds = %8
  %19 = load i32, ptr %6, align 4, !tbaa !5
  %20 = load i32, ptr %5, align 4, !tbaa !5
  %21 = add nsw i32 %20, %19
  store i32 %21, ptr %5, align 4, !tbaa !5
  %22 = load i32, ptr %6, align 4, !tbaa !5
  store i32 %22, ptr %3, align 4, !tbaa !5
  store i32 0, ptr %6, align 4, !tbaa !5
  br label %23

23:                                               ; preds = %26, %18
  %24 = load i32, ptr %3, align 4, !tbaa !5
  %25 = icmp ne i32 %24, 0
  br i1 %25, label %26, label %33

26:                                               ; preds = %23
  %27 = load i32, ptr %3, align 4, !tbaa !5
  %28 = srem i32 %27, 10
  %29 = load i32, ptr %6, align 4, !tbaa !5
  %30 = add nsw i32 %29, %28
  store i32 %30, ptr %6, align 4, !tbaa !5
  %31 = load i32, ptr %3, align 4, !tbaa !5
  %32 = sdiv i32 %31, 10
  store i32 %32, ptr %3, align 4, !tbaa !5
  br label %23, !llvm.loop !11

33:                                               ; preds = %23
  %34 = load i32, ptr %6, align 4, !tbaa !5
  %35 = load i32, ptr %5, align 4, !tbaa !5
  %36 = add nsw i32 %35, %34
  store i32 %36, ptr %5, align 4, !tbaa !5
  %37 = load i32, ptr %5, align 4, !tbaa !5
  %38 = load i32, ptr %4, align 4, !tbaa !5
  %39 = icmp eq i32 %37, %38
  call void @llvm.lifetime.end.p0(i64 4, ptr %6) #2
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #2
  ret i1 %39
}

; 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 = !{!"int", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = distinct !{!9, !10}
!10 = !{!"llvm.loop.mustprogress"}
!11 = distinct !{!11, !10}


; 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 @_Z2okii(i32 noundef %0, i32 noundef %1) local_unnamed_addr #0 {
  %.not19 = icmp eq i32 %0, 0
  br i1 %.not19, label %._crit_edge, label %.lr.ph

.preheader:                                       ; preds = %.lr.ph
  %.not1822 = icmp eq i32 %4, 0
  br i1 %.not1822, label %._crit_edge, label %.lr.ph25

.lr.ph:                                           ; preds = %2, %.lr.ph
  %.021 = phi i32 [ %4, %.lr.ph ], [ 0, %2 ]
  %.01620 = phi i32 [ %5, %.lr.ph ], [ %0, %2 ]
  %3 = srem i32 %.01620, 10
  %4 = add nsw i32 %.021, %3
  %5 = sdiv i32 %.01620, 10
  %.01620.off = add i32 %.01620, 9
  %.not = icmp ult i32 %.01620.off, 19
  br i1 %.not, label %.preheader, label %.lr.ph, !llvm.loop !5

.lr.ph25:                                         ; preds = %.preheader, %.lr.ph25
  %.124 = phi i32 [ %7, %.lr.ph25 ], [ 0, %.preheader ]
  %.11723 = phi i32 [ %8, %.lr.ph25 ], [ %4, %.preheader ]
  %6 = srem i32 %.11723, 10
  %7 = add nsw i32 %.124, %6
  %8 = sdiv i32 %.11723, 10
  %.11723.off = add i32 %.11723, 9
  %.not18 = icmp ult i32 %.11723.off, 19
  br i1 %.not18, label %._crit_edge, label %.lr.ph25, !llvm.loop !7

._crit_edge:                                      ; preds = %.lr.ph25, %2, %.preheader
  %.0.lcssa30 = phi i32 [ 0, %.preheader ], [ 0, %2 ], [ %4, %.lr.ph25 ]
  %.1.lcssa = phi i32 [ 0, %.preheader ], [ 0, %2 ], [ %7, %.lr.ph25 ]
  %9 = add nsw i32 %.0.lcssa30, %0
  %10 = add nsw i32 %9, %.1.lcssa
  %11 = icmp eq i32 %10, %1
  ret i1 %11
}

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"}
!7 = distinct !{!7, !6}


; Effective O3 passes: CorrelatedValuePropagationPass,GVNPass,GlobalOptPass,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,JumpThreadingPass,LCSSAPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass