; LLVM IR from tangjz/acm-icpc :: buaa/oj3rd/1113.ll (Z7rebuildv)

; 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"

@all = external dso_local global [40 x i32], align 16
@wan = external dso_local global [40 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: mustprogress nounwind uwtable
define dso_local void @_Z7rebuildv() #1 {
  %1 = alloca i32, align 4
  call void @llvm.lifetime.start.p0(i64 4, ptr %1) #2
  store i32 0, ptr %1, align 4, !tbaa !5
  br label %2

2:                                                ; preds = %19, %0
  %3 = load i32, ptr %1, align 4, !tbaa !5
  %4 = icmp slt i32 %3, 34
  br i1 %4, label %6, label %5

5:                                                ; preds = %2
  call void @llvm.lifetime.end.p0(i64 4, ptr %1) #2
  br label %22

6:                                                ; preds = %2
  %7 = load i32, ptr %1, align 4, !tbaa !5
  %8 = sext i32 %7 to i64
  %9 = getelementptr inbounds [40 x i32], ptr @wan, i64 0, i64 %8
  %10 = load i32, ptr %9, align 4, !tbaa !5
  %11 = load i32, ptr %1, align 4, !tbaa !5
  %12 = sext i32 %11 to i64
  %13 = getelementptr inbounds [40 x i32], ptr @all, i64 0, i64 %12
  %14 = load i32, ptr %13, align 4, !tbaa !5
  %15 = add nsw i32 %14, %10
  store i32 %15, ptr %13, align 4, !tbaa !5
  %16 = load i32, ptr %1, align 4, !tbaa !5
  %17 = sext i32 %16 to i64
  %18 = getelementptr inbounds [40 x i32], ptr @wan, i64 0, i64 %17
  store i32 0, ptr %18, align 4, !tbaa !5
  br label %19

19:                                               ; preds = %6
  %20 = load i32, ptr %1, align 4, !tbaa !5
  %21 = add nsw i32 %20, 1
  store i32 %21, ptr %1, align 4, !tbaa !5
  br label %2, !llvm.loop !9

22:                                               ; preds = %5
  ret void
}

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 = !{!"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"

@all = external dso_local local_unnamed_addr global [40 x i32], align 16
@wan = external dso_local local_unnamed_addr global [40 x i32], align 16

; Function Attrs: mustprogress nofree norecurse nosync nounwind willreturn memory(readwrite, argmem: none, inaccessiblemem: none) uwtable
define dso_local void @_Z7rebuildv() local_unnamed_addr #0 {
  %1 = load <4 x i32>, ptr @wan, align 16, !tbaa !5
  %2 = load <4 x i32>, ptr @all, align 16, !tbaa !5
  %3 = add nsw <4 x i32> %2, %1
  store <4 x i32> %3, ptr @all, align 16, !tbaa !5
  store <4 x i32> zeroinitializer, ptr @wan, align 16, !tbaa !5
  %4 = load <4 x i32>, ptr getelementptr inbounds (i8, ptr @wan, i64 16), align 16, !tbaa !5
  %5 = load <4 x i32>, ptr getelementptr inbounds (i8, ptr @all, i64 16), align 16, !tbaa !5
  %6 = add nsw <4 x i32> %5, %4
  store <4 x i32> %6, ptr getelementptr inbounds (i8, ptr @all, i64 16), align 16, !tbaa !5
  store <4 x i32> zeroinitializer, ptr getelementptr inbounds (i8, ptr @wan, i64 16), align 16, !tbaa !5
  %7 = load <4 x i32>, ptr getelementptr inbounds (i8, ptr @wan, i64 32), align 16, !tbaa !5
  %8 = load <4 x i32>, ptr getelementptr inbounds (i8, ptr @all, i64 32), align 16, !tbaa !5
  %9 = add nsw <4 x i32> %8, %7
  store <4 x i32> %9, ptr getelementptr inbounds (i8, ptr @all, i64 32), align 16, !tbaa !5
  store <4 x i32> zeroinitializer, ptr getelementptr inbounds (i8, ptr @wan, i64 32), align 16, !tbaa !5
  %10 = load <4 x i32>, ptr getelementptr inbounds (i8, ptr @wan, i64 48), align 16, !tbaa !5
  %11 = load <4 x i32>, ptr getelementptr inbounds (i8, ptr @all, i64 48), align 16, !tbaa !5
  %12 = add nsw <4 x i32> %11, %10
  store <4 x i32> %12, ptr getelementptr inbounds (i8, ptr @all, i64 48), align 16, !tbaa !5
  store <4 x i32> zeroinitializer, ptr getelementptr inbounds (i8, ptr @wan, i64 48), align 16, !tbaa !5
  %13 = load <4 x i32>, ptr getelementptr inbounds (i8, ptr @wan, i64 64), align 16, !tbaa !5
  %14 = load <4 x i32>, ptr getelementptr inbounds (i8, ptr @all, i64 64), align 16, !tbaa !5
  %15 = add nsw <4 x i32> %14, %13
  store <4 x i32> %15, ptr getelementptr inbounds (i8, ptr @all, i64 64), align 16, !tbaa !5
  store <4 x i32> zeroinitializer, ptr getelementptr inbounds (i8, ptr @wan, i64 64), align 16, !tbaa !5
  %16 = load <4 x i32>, ptr getelementptr inbounds (i8, ptr @wan, i64 80), align 16, !tbaa !5
  %17 = load <4 x i32>, ptr getelementptr inbounds (i8, ptr @all, i64 80), align 16, !tbaa !5
  %18 = add nsw <4 x i32> %17, %16
  store <4 x i32> %18, ptr getelementptr inbounds (i8, ptr @all, i64 80), align 16, !tbaa !5
  store <4 x i32> zeroinitializer, ptr getelementptr inbounds (i8, ptr @wan, i64 80), align 16, !tbaa !5
  %19 = load <4 x i32>, ptr getelementptr inbounds (i8, ptr @wan, i64 96), align 16, !tbaa !5
  %20 = load <4 x i32>, ptr getelementptr inbounds (i8, ptr @all, i64 96), align 16, !tbaa !5
  %21 = add nsw <4 x i32> %20, %19
  store <4 x i32> %21, ptr getelementptr inbounds (i8, ptr @all, i64 96), align 16, !tbaa !5
  store <4 x i32> zeroinitializer, ptr getelementptr inbounds (i8, ptr @wan, i64 96), align 16, !tbaa !5
  %22 = load <4 x i32>, ptr getelementptr inbounds (i8, ptr @wan, i64 112), align 16, !tbaa !5
  %23 = load <4 x i32>, ptr getelementptr inbounds (i8, ptr @all, i64 112), align 16, !tbaa !5
  %24 = add nsw <4 x i32> %23, %22
  store <4 x i32> %24, ptr getelementptr inbounds (i8, ptr @all, i64 112), align 16, !tbaa !5
  store <4 x i32> zeroinitializer, ptr getelementptr inbounds (i8, ptr @wan, i64 112), align 16, !tbaa !5
  %25 = load <2 x i32>, ptr getelementptr inbounds (i8, ptr @wan, i64 128), align 16, !tbaa !5
  store i32 0, ptr getelementptr inbounds (i8, ptr @wan, i64 128), align 16, !tbaa !5
  %26 = load <2 x i32>, ptr getelementptr inbounds (i8, ptr @all, i64 128), align 16, !tbaa !5
  %27 = add nsw <2 x i32> %26, %25
  store <2 x i32> %27, ptr getelementptr inbounds (i8, ptr @all, i64 128), align 16, !tbaa !5
  store i32 0, ptr getelementptr inbounds (i8, ptr @wan, i64 132), align 4, !tbaa !5
  ret void
}

attributes #0 = { mustprogress nofree norecurse nosync nounwind willreturn 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"}


; Effective O3 passes: EarlyCSEPass,GVNPass,GlobalOptPass,IndVarSimplifyPass,InferAlignmentPass,InferFunctionAttrsPass,InstCombinePass,LoopRotatePass,PostOrderFunctionAttrsPass,SLPVectorizerPass,SROAPass,SimplifyCFGPass