; LLVM IR from kazunetakahashi/atcoder :: 2017/0325_yahoo-procon2017-final/C2.ll (Z8make_cnti)

; 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"

@sq = external dso_local global [317 x [317 x i32]], align 16
@cnt = external dso_local global [317 x [100010 x i32]], align 16

; Function Attrs: mustprogress nounwind uwtable
define dso_local void @_Z8make_cnti(i32 noundef %0) #0 {
  %2 = alloca i32, align 4
  %3 = alloca i32, align 4
  %4 = alloca i32, align 4
  store i32 %0, ptr %2, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %3) #2
  store i32 0, ptr %3, align 4, !tbaa !5
  br label %5

5:                                                ; preds = %16, %1
  %6 = load i32, ptr %3, align 4, !tbaa !5
  %7 = icmp slt i32 %6, 100010
  br i1 %7, label %9, label %8

8:                                                ; preds = %5
  call void @llvm.lifetime.end.p0(i64 4, ptr %3) #2
  br label %19

9:                                                ; preds = %5
  %10 = load i32, ptr %2, align 4, !tbaa !5
  %11 = sext i32 %10 to i64
  %12 = getelementptr inbounds [317 x [100010 x i32]], ptr @cnt, i64 0, i64 %11
  %13 = load i32, ptr %3, align 4, !tbaa !5
  %14 = sext i32 %13 to i64
  %15 = getelementptr inbounds [100010 x i32], ptr %12, i64 0, i64 %14
  store i32 0, ptr %15, align 4, !tbaa !5
  br label %16

16:                                               ; preds = %9
  %17 = load i32, ptr %3, align 4, !tbaa !5
  %18 = add nsw i32 %17, 1
  store i32 %18, ptr %3, align 4, !tbaa !5
  br label %5, !llvm.loop !9

19:                                               ; preds = %8
  call void @llvm.lifetime.start.p0(i64 4, ptr %4) #2
  %20 = load i32, ptr %2, align 4, !tbaa !5
  %21 = mul nsw i32 %20, 317
  store i32 %21, ptr %4, align 4, !tbaa !5
  br label %22

22:                                               ; preds = %45, %19
  %23 = load i32, ptr %4, align 4, !tbaa !5
  %24 = load i32, ptr %2, align 4, !tbaa !5
  %25 = add nsw i32 %24, 1
  %26 = mul nsw i32 %25, 317
  %27 = icmp slt i32 %23, %26
  br i1 %27, label %29, label %28

28:                                               ; preds = %22
  call void @llvm.lifetime.end.p0(i64 4, ptr %4) #2
  br label %48

29:                                               ; preds = %22
  %30 = load i32, ptr %2, align 4, !tbaa !5
  %31 = sext i32 %30 to i64
  %32 = getelementptr inbounds [317 x [100010 x i32]], ptr @cnt, i64 0, i64 %31
  %33 = load i32, ptr %2, align 4, !tbaa !5
  %34 = sext i32 %33 to i64
  %35 = getelementptr inbounds [317 x [317 x i32]], ptr @sq, i64 0, i64 %34
  %36 = load i32, ptr %4, align 4, !tbaa !5
  %37 = srem i32 %36, 317
  %38 = sext i32 %37 to i64
  %39 = getelementptr inbounds [317 x i32], ptr %35, i64 0, i64 %38
  %40 = load i32, ptr %39, align 4, !tbaa !5
  %41 = sext i32 %40 to i64
  %42 = getelementptr inbounds [100010 x i32], ptr %32, i64 0, i64 %41
  %43 = load i32, ptr %42, align 4, !tbaa !5
  %44 = add nsw i32 %43, 1
  store i32 %44, ptr %42, align 4, !tbaa !5
  br label %45

45:                                               ; preds = %29
  %46 = load i32, ptr %4, align 4, !tbaa !5
  %47 = add nsw i32 %46, 1
  store i32 %47, ptr %4, align 4, !tbaa !5
  br label %22, !llvm.loop !11

48:                                               ; preds = %28
  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 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"

@sq = external dso_local local_unnamed_addr global [317 x [317 x i32]], align 16
@cnt = external dso_local local_unnamed_addr global [317 x [100010 x i32]], align 16

; Function Attrs: mustprogress nofree norecurse nosync nounwind memory(readwrite, argmem: none, inaccessiblemem: none) uwtable
define dso_local void @_Z8make_cnti(i32 noundef %0) local_unnamed_addr #0 {
  %2 = sext i32 %0 to i64
  %3 = mul nsw i64 %2, 400040
  %scevgep = getelementptr i8, ptr @cnt, i64 %3
  tail call void @llvm.memset.p0.i64(ptr noundef nonnull align 8 dereferenceable(400040) %scevgep, i8 0, i64 400040, i1 false), !tbaa !5
  %4 = mul i32 %0, 317
  %5 = add i32 %4, 317
  %6 = icmp slt i32 %4, 2147483331
  br i1 %6, label %.lr.ph, label %._crit_edge

._crit_edge:                                      ; preds = %.lr.ph, %1
  ret void

.lr.ph:                                           ; preds = %1, %.lr.ph
  %.013 = phi i32 [ %15, %.lr.ph ], [ %4, %1 ]
  %7 = srem i32 %.013, 317
  %8 = sext i32 %7 to i64
  %9 = getelementptr inbounds [317 x [317 x i32]], ptr @sq, i64 0, i64 %2, i64 %8
  %10 = load i32, ptr %9, align 4, !tbaa !5
  %11 = sext i32 %10 to i64
  %12 = getelementptr inbounds [317 x [100010 x i32]], ptr @cnt, i64 0, i64 %2, 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
  %15 = add nsw i32 %.013, 1
  %16 = icmp slt i32 %15, %5
  br i1 %16, label %.lr.ph, label %._crit_edge, !llvm.loop !9
}

; Function Attrs: nocallback nofree nounwind willreturn memory(argmem: write)
declare void @llvm.memset.p0.i64(ptr nocapture writeonly, i8, i64, i1 immarg) #1

attributes #0 = { mustprogress nofree norecurse 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" }
attributes #1 = { nocallback nofree nounwind willreturn memory(argmem: write) }

!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,GVNPass,GlobalOptPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,JumpThreadingPass,LICMPass,LoopIdiomRecognizePass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass,TailCallElimPass