; LLVM IR from tangjz/acm-icpc :: hdu/5468.ll (Z3updii)

; 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"

@cnt = external dso_local global i32, align 4
@p = external dso_local global [7 x i32], align 16
@c = external dso_local global [7 x i32], align 16
@f = external dso_local global [100001 x i32], align 16

; Function Attrs: mustprogress uwtable
define dso_local void @_Z3updii(i32 noundef %0, i32 noundef %1) #0 {
  %3 = alloca i32, align 4
  %4 = alloca i32, align 4
  %5 = alloca i32, align 4
  store i32 %0, ptr %3, align 4, !tbaa !5
  store i32 %1, ptr %4, align 4, !tbaa !5
  %6 = load i32, ptr %3, align 4, !tbaa !5
  %7 = load i32, ptr @cnt, align 4, !tbaa !5
  %8 = icmp eq i32 %6, %7
  br i1 %8, label %9, label %15

9:                                                ; preds = %2
  %10 = load i32, ptr %4, align 4, !tbaa !5
  %11 = sext i32 %10 to i64
  %12 = getelementptr inbounds [100001 x i32], ptr @f, i64 0, i64 %11
  %13 = load i32, ptr %12, align 4, !tbaa !5
  %14 = add nsw i32 %13, 1
  store i32 %14, ptr %12, align 4, !tbaa !5
  br label %39

15:                                               ; preds = %2
  %16 = load i32, ptr %3, align 4, !tbaa !5
  %17 = add nsw i32 %16, 1
  %18 = load i32, ptr %4, align 4, !tbaa !5
  call void @_Z3updii(i32 noundef %17, i32 noundef %18)
  call void @llvm.lifetime.start.p0(i64 4, ptr %5) #2
  store i32 0, ptr %5, align 4, !tbaa !5
  br label %19

19:                                               ; preds = %36, %15
  %20 = load i32, ptr %5, align 4, !tbaa !5
  %21 = load i32, ptr %3, align 4, !tbaa !5
  %22 = sext i32 %21 to i64
  %23 = getelementptr inbounds [7 x i32], ptr @c, i64 0, i64 %22
  %24 = load i32, ptr %23, align 4, !tbaa !5
  %25 = icmp slt i32 %20, %24
  br i1 %25, label %27, label %26

26:                                               ; preds = %19
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #2
  br label %39

27:                                               ; preds = %19
  %28 = load i32, ptr %3, align 4, !tbaa !5
  %29 = add nsw i32 %28, 1
  %30 = load i32, ptr %3, align 4, !tbaa !5
  %31 = sext i32 %30 to i64
  %32 = getelementptr inbounds [7 x i32], ptr @p, i64 0, i64 %31
  %33 = load i32, ptr %32, align 4, !tbaa !5
  %34 = load i32, ptr %4, align 4, !tbaa !5
  %35 = mul nsw i32 %34, %33
  store i32 %35, ptr %4, align 4, !tbaa !5
  call void @_Z3updii(i32 noundef %29, i32 noundef %35)
  br label %36

36:                                               ; preds = %27
  %37 = load i32, ptr %5, align 4, !tbaa !5
  %38 = add nsw i32 %37, 1
  store i32 %38, ptr %5, align 4, !tbaa !5
  br label %19, !llvm.loop !9

39:                                               ; preds = %26, %9
  ret void
}

; 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 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"}


; 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"

@cnt = external dso_local local_unnamed_addr global i32, align 4
@p = external dso_local local_unnamed_addr global [7 x i32], align 16
@c = external dso_local local_unnamed_addr global [7 x i32], align 16
@f = external dso_local local_unnamed_addr global [100001 x i32], align 16

; Function Attrs: mustprogress nofree nosync nounwind memory(readwrite, argmem: none, inaccessiblemem: none) uwtable
define dso_local void @_Z3updii(i32 noundef %0, i32 noundef %1) local_unnamed_addr #0 {
  %3 = load i32, ptr @cnt, align 4, !tbaa !5
  %4 = icmp eq i32 %3, %0
  br i1 %4, label %5, label %10

5:                                                ; preds = %2
  %6 = sext i32 %1 to i64
  %7 = getelementptr inbounds [100001 x i32], ptr @f, i64 0, i64 %6
  %8 = load i32, ptr %7, align 4, !tbaa !5
  %9 = add nsw i32 %8, 1
  store i32 %9, ptr %7, align 4, !tbaa !5
  br label %.loopexit

10:                                               ; preds = %2
  %11 = add nsw i32 %0, 1
  tail call void @_Z3updii(i32 noundef %11, i32 noundef %1)
  %12 = sext i32 %0 to i64
  %13 = getelementptr inbounds [7 x i32], ptr @c, i64 0, i64 %12
  %14 = load i32, ptr %13, align 4, !tbaa !5
  %15 = icmp sgt i32 %14, 0
  br i1 %15, label %.lr.ph, label %.loopexit

.lr.ph:                                           ; preds = %10
  %16 = getelementptr inbounds [7 x i32], ptr @p, i64 0, i64 %12
  br label %17

17:                                               ; preds = %.lr.ph, %17
  %.013 = phi i32 [ 0, %.lr.ph ], [ %20, %17 ]
  %.01012 = phi i32 [ %1, %.lr.ph ], [ %19, %17 ]
  %18 = load i32, ptr %16, align 4, !tbaa !5
  %19 = mul nsw i32 %18, %.01012
  tail call void @_Z3updii(i32 noundef %11, i32 noundef %19)
  %20 = add nuw nsw i32 %.013, 1
  %21 = load i32, ptr %13, align 4, !tbaa !5
  %22 = icmp slt i32 %20, %21
  br i1 %22, label %17, label %.loopexit, !llvm.loop !9

.loopexit:                                        ; preds = %17, %10, %5
  ret void
}

attributes #0 = { mustprogress nofree nosync nounwind memory(readwrite, argmem: none, inaccessiblemem: 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 = !{!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"}


; Effective O3 passes: EarlyCSEPass,GlobalOptPass,InferFunctionAttrsPass,InstCombinePass,JumpThreadingPass,LICMPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,ReassociatePass,SROAPass,SimplifyCFGPass,TailCallElimPass