; LLVM IR from tangjz/acm-icpc :: buaa/oj3rd/727.ll (Z6updateiiiii)

; 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"

@seg = external dso_local global [262377 x i32], align 16

; Function Attrs: mustprogress uwtable
define dso_local void @_Z6updateiiiii(i32 noundef %0, i32 noundef %1, i32 noundef %2, i32 noundef %3, i32 noundef %4) #0 {
  %6 = alloca i32, align 4
  %7 = alloca i32, align 4
  %8 = alloca i32, align 4
  %9 = alloca i32, align 4
  %10 = alloca i32, align 4
  %11 = alloca i32, align 4
  store i32 %0, ptr %6, align 4, !tbaa !5
  store i32 %1, ptr %7, align 4, !tbaa !5
  store i32 %2, ptr %8, align 4, !tbaa !5
  store i32 %3, ptr %9, align 4, !tbaa !5
  store i32 %4, ptr %10, align 4, !tbaa !5
  %12 = load i32, ptr %6, align 4, !tbaa !5
  %13 = sext i32 %12 to i64
  %14 = getelementptr inbounds [262377 x i32], ptr @seg, i64 0, i64 %13
  %15 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZSt3maxIiERKT_S2_S2_(ptr noundef nonnull align 4 dereferenceable(4) %14, ptr noundef nonnull align 4 dereferenceable(4) %10)
  %16 = load i32, ptr %15, align 4, !tbaa !5
  %17 = load i32, ptr %6, align 4, !tbaa !5
  %18 = sext i32 %17 to i64
  %19 = getelementptr inbounds [262377 x i32], ptr @seg, i64 0, i64 %18
  store i32 %16, ptr %19, align 4, !tbaa !5
  %20 = load i32, ptr %7, align 4, !tbaa !5
  %21 = load i32, ptr %8, align 4, !tbaa !5
  %22 = icmp eq i32 %20, %21
  br i1 %22, label %23, label %24

23:                                               ; preds = %5
  br label %51

24:                                               ; preds = %5
  call void @llvm.lifetime.start.p0(i64 4, ptr %11) #3
  %25 = load i32, ptr %7, align 4, !tbaa !5
  %26 = load i32, ptr %8, align 4, !tbaa !5
  %27 = add nsw i32 %25, %26
  %28 = ashr i32 %27, 1
  store i32 %28, ptr %11, align 4, !tbaa !5
  %29 = load i32, ptr %9, align 4, !tbaa !5
  %30 = load i32, ptr %11, align 4, !tbaa !5
  %31 = icmp sle i32 %29, %30
  br i1 %31, label %32, label %40

32:                                               ; preds = %24
  %33 = load i32, ptr %6, align 4, !tbaa !5
  %34 = load i32, ptr %6, align 4, !tbaa !5
  %35 = add nsw i32 %33, %34
  %36 = load i32, ptr %7, align 4, !tbaa !5
  %37 = load i32, ptr %11, align 4, !tbaa !5
  %38 = load i32, ptr %9, align 4, !tbaa !5
  %39 = load i32, ptr %10, align 4, !tbaa !5
  call void @_Z6updateiiiii(i32 noundef %35, i32 noundef %36, i32 noundef %37, i32 noundef %38, i32 noundef %39)
  br label %50

40:                                               ; preds = %24
  %41 = load i32, ptr %6, align 4, !tbaa !5
  %42 = load i32, ptr %6, align 4, !tbaa !5
  %43 = add nsw i32 %41, %42
  %44 = add nsw i32 %43, 1
  %45 = load i32, ptr %11, align 4, !tbaa !5
  %46 = add nsw i32 %45, 1
  %47 = load i32, ptr %8, align 4, !tbaa !5
  %48 = load i32, ptr %9, align 4, !tbaa !5
  %49 = load i32, ptr %10, align 4, !tbaa !5
  call void @_Z6updateiiiii(i32 noundef %44, i32 noundef %46, i32 noundef %47, i32 noundef %48, i32 noundef %49)
  br label %50

50:                                               ; preds = %40, %32
  call void @llvm.lifetime.end.p0(i64 4, ptr %11) #3
  br label %51

51:                                               ; preds = %50, %23
  ret void
}

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local noundef nonnull align 4 dereferenceable(4) ptr @_ZSt3maxIiERKT_S2_S2_(ptr noundef nonnull align 4 dereferenceable(4), ptr noundef nonnull align 4 dereferenceable(4)) #1

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #2

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #2

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 = { inlinehint 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 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #3 = { 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"}


; 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"

@seg = external dso_local global [262377 x i32], align 16

; Function Attrs: mustprogress nounwind uwtable
define dso_local void @_Z6updateiiiii(i32 noundef %0, i32 noundef %1, i32 noundef %2, i32 noundef %3, i32 noundef %4) local_unnamed_addr #0 {
  %6 = alloca i32, align 4
  store i32 %4, ptr %6, align 4, !tbaa !5
  %7 = sext i32 %0 to i64
  %8 = getelementptr inbounds [262377 x i32], ptr @seg, i64 0, i64 %7
  %9 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZSt3maxIiERKT_S2_S2_(ptr noundef nonnull align 4 dereferenceable(4) %8, ptr noundef nonnull align 4 dereferenceable(4) %6)
  %10 = load i32, ptr %9, align 4, !tbaa !5
  store i32 %10, ptr %8, align 4, !tbaa !5
  %11 = icmp eq i32 %1, %2
  br i1 %11, label %22, label %12

12:                                               ; preds = %5
  %13 = add nsw i32 %2, %1
  %14 = ashr i32 %13, 1
  %.not = icmp slt i32 %14, %3
  %15 = shl nsw i32 %0, 1
  br i1 %.not, label %18, label %16

16:                                               ; preds = %12
  %17 = load i32, ptr %6, align 4, !tbaa !5
  call void @_Z6updateiiiii(i32 noundef %15, i32 noundef %1, i32 noundef %14, i32 noundef %3, i32 noundef %17)
  br label %22

18:                                               ; preds = %12
  %19 = or disjoint i32 %15, 1
  %20 = add nsw i32 %14, 1
  %21 = load i32, ptr %6, align 4, !tbaa !5
  call void @_Z6updateiiiii(i32 noundef %19, i32 noundef %20, i32 noundef %2, i32 noundef %3, i32 noundef %21)
  br label %22

22:                                               ; preds = %16, %18, %5
  ret void
}

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local noundef nonnull align 4 dereferenceable(4) ptr @_ZSt3maxIiERKT_S2_S2_(ptr noundef nonnull align 4 dereferenceable(4), ptr noundef nonnull align 4 dereferenceable(4)) local_unnamed_addr #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 = { inlinehint 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" }

!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"}


; Effective O3 passes: EarlyCSEPass,GlobalOptPass,InferFunctionAttrsPass,InstCombinePass,PostOrderFunctionAttrsPass,ReassociatePass,SROAPass,SimplifyCFGPass