; LLVM IR from lzyrapx/Competitive-Programming :: HDUOJ/5751 (2).ll (Z6getmaxiiiii)

; 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"

@mx = external dso_local global [262144 x i32], align 16

; 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: 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: mustprogress uwtable
define dso_local noundef i32 @_Z6getmaxiiiii(i32 noundef %0, i32 noundef %1, i32 noundef %2, i32 noundef %3, i32 noundef %4) #2 {
  %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
  %12 = alloca i32, align 4
  %13 = alloca i32, align 4
  %14 = alloca i32, align 4
  %15 = alloca i32, align 4
  store i32 %0, ptr %7, align 4, !tbaa !5
  store i32 %1, ptr %8, align 4, !tbaa !5
  store i32 %2, ptr %9, align 4, !tbaa !5
  store i32 %3, ptr %10, align 4, !tbaa !5
  store i32 %4, ptr %11, align 4, !tbaa !5
  %16 = load i32, ptr %7, align 4, !tbaa !5
  %17 = load i32, ptr %10, align 4, !tbaa !5
  %18 = icmp sge i32 %16, %17
  br i1 %18, label %19, label %28

19:                                               ; preds = %5
  %20 = load i32, ptr %8, align 4, !tbaa !5
  %21 = load i32, ptr %11, align 4, !tbaa !5
  %22 = icmp sle i32 %20, %21
  br i1 %22, label %23, label %28

23:                                               ; preds = %19
  %24 = load i32, ptr %9, align 4, !tbaa !5
  %25 = sext i32 %24 to i64
  %26 = getelementptr inbounds [262144 x i32], ptr @mx, i64 0, i64 %25
  %27 = load i32, ptr %26, align 4, !tbaa !5
  store i32 %27, ptr %6, align 4
  br label %64

28:                                               ; preds = %19, %5
  call void @llvm.lifetime.start.p0(i64 4, ptr %12) #3
  %29 = load i32, ptr %7, align 4, !tbaa !5
  %30 = load i32, ptr %8, align 4, !tbaa !5
  %31 = add nsw i32 %29, %30
  %32 = ashr i32 %31, 1
  store i32 %32, ptr %12, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %13) #3
  store i32 0, ptr %13, align 4, !tbaa !5
  %33 = load i32, ptr %10, align 4, !tbaa !5
  %34 = load i32, ptr %12, align 4, !tbaa !5
  %35 = icmp sle i32 %33, %34
  br i1 %35, label %36, label %46

36:                                               ; preds = %28
  call void @llvm.lifetime.start.p0(i64 4, ptr %14) #3
  %37 = load i32, ptr %7, align 4, !tbaa !5
  %38 = load i32, ptr %12, align 4, !tbaa !5
  %39 = load i32, ptr %9, align 4, !tbaa !5
  %40 = shl i32 %39, 1
  %41 = load i32, ptr %10, align 4, !tbaa !5
  %42 = load i32, ptr %11, align 4, !tbaa !5
  %43 = call noundef i32 @_Z6getmaxiiiii(i32 noundef %37, i32 noundef %38, i32 noundef %40, i32 noundef %41, i32 noundef %42)
  store i32 %43, ptr %14, align 4, !tbaa !5
  %44 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZSt3maxIiERKT_S2_S2_(ptr noundef nonnull align 4 dereferenceable(4) %13, ptr noundef nonnull align 4 dereferenceable(4) %14)
  %45 = load i32, ptr %44, align 4, !tbaa !5
  store i32 %45, ptr %13, align 4, !tbaa !5
  call void @llvm.lifetime.end.p0(i64 4, ptr %14) #3
  br label %46

46:                                               ; preds = %36, %28
  %47 = load i32, ptr %11, align 4, !tbaa !5
  %48 = load i32, ptr %12, align 4, !tbaa !5
  %49 = icmp sgt i32 %47, %48
  br i1 %49, label %50, label %62

50:                                               ; preds = %46
  call void @llvm.lifetime.start.p0(i64 4, ptr %15) #3
  %51 = load i32, ptr %12, align 4, !tbaa !5
  %52 = add nsw i32 %51, 1
  %53 = load i32, ptr %8, align 4, !tbaa !5
  %54 = load i32, ptr %9, align 4, !tbaa !5
  %55 = shl i32 %54, 1
  %56 = or i32 %55, 1
  %57 = load i32, ptr %10, align 4, !tbaa !5
  %58 = load i32, ptr %11, align 4, !tbaa !5
  %59 = call noundef i32 @_Z6getmaxiiiii(i32 noundef %52, i32 noundef %53, i32 noundef %56, i32 noundef %57, i32 noundef %58)
  store i32 %59, ptr %15, align 4, !tbaa !5
  %60 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZSt3maxIiERKT_S2_S2_(ptr noundef nonnull align 4 dereferenceable(4) %13, ptr noundef nonnull align 4 dereferenceable(4) %15)
  %61 = load i32, ptr %60, align 4, !tbaa !5
  store i32 %61, ptr %13, align 4, !tbaa !5
  call void @llvm.lifetime.end.p0(i64 4, ptr %15) #3
  br label %62

62:                                               ; preds = %50, %46
  %63 = load i32, ptr %13, align 4, !tbaa !5
  store i32 %63, ptr %6, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %13) #3
  call void @llvm.lifetime.end.p0(i64 4, ptr %12) #3
  br label %64

64:                                               ; preds = %62, %23
  %65 = load i32, ptr %6, align 4
  ret i32 %65
}

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
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 = { 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 #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"

@mx = external dso_local local_unnamed_addr global [262144 x i32], align 16

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

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

; 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

; Function Attrs: mustprogress nounwind uwtable
define dso_local noundef i32 @_Z6getmaxiiiii(i32 noundef %0, i32 noundef %1, i32 noundef %2, i32 noundef %3, i32 noundef %4) local_unnamed_addr #2 {
  %6 = alloca i32, align 4
  %7 = alloca i32, align 4
  %8 = alloca i32, align 4
  %.not = icmp slt i32 %0, %3
  %.not25 = icmp sgt i32 %1, %4
  %or.cond = or i1 %.not, %.not25
  br i1 %or.cond, label %13, label %9

9:                                                ; preds = %5
  %10 = sext i32 %2 to i64
  %11 = getelementptr inbounds [262144 x i32], ptr @mx, i64 0, i64 %10
  %12 = load i32, ptr %11, align 4, !tbaa !5
  br label %33

13:                                               ; preds = %5
  %14 = add nsw i32 %1, %0
  %15 = ashr i32 %14, 1
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %6) #3
  store i32 0, ptr %6, align 4, !tbaa !5
  %.not26 = icmp slt i32 %15, %3
  br i1 %.not26, label %21, label %16

16:                                               ; preds = %13
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %7) #3
  %17 = shl i32 %2, 1
  %18 = tail call noundef i32 @_Z6getmaxiiiii(i32 noundef %0, i32 noundef %15, i32 noundef %17, i32 noundef %3, i32 noundef %4)
  store i32 %18, ptr %7, align 4, !tbaa !5
  %19 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZSt3maxIiERKT_S2_S2_(ptr noundef nonnull align 4 dereferenceable(4) %6, ptr noundef nonnull align 4 dereferenceable(4) %7)
  %20 = load i32, ptr %19, align 4, !tbaa !5
  store i32 %20, ptr %6, align 4, !tbaa !5
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %7) #3
  br label %21

21:                                               ; preds = %16, %13
  %22 = phi i32 [ %20, %16 ], [ 0, %13 ]
  %23 = icmp slt i32 %15, %4
  br i1 %23, label %24, label %31

24:                                               ; preds = %21
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %8) #3
  %25 = add nsw i32 %15, 1
  %26 = shl i32 %2, 1
  %27 = or disjoint i32 %26, 1
  %28 = call noundef i32 @_Z6getmaxiiiii(i32 noundef %25, i32 noundef %1, i32 noundef %27, i32 noundef %3, i32 noundef %4)
  store i32 %28, ptr %8, align 4, !tbaa !5
  %29 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZSt3maxIiERKT_S2_S2_(ptr noundef nonnull align 4 dereferenceable(4) %6, ptr noundef nonnull align 4 dereferenceable(4) %8)
  %30 = load i32, ptr %29, align 4, !tbaa !5
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %8) #3
  br label %31

31:                                               ; preds = %24, %21
  %32 = phi i32 [ %30, %24 ], [ %22, %21 ]
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %6) #3
  br label %33

33:                                               ; preds = %31, %9
  %.0 = phi i32 [ %12, %9 ], [ %32, %31 ]
  ret i32 %.0
}

attributes #0 = { mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
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 = { 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 #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"}


; Effective O3 passes: DSEPass,GVNPass,GlobalOptPass,InferFunctionAttrsPass,InstCombinePass,PostOrderFunctionAttrsPass,ReassociatePass,SROAPass,SimplifyCFGPass,TailCallElimPass