; LLVM IR from Tunghohin/Competitive_Coding :: Hdu/hdu4635.ll (Z4initi)

; 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"

@head = external dso_local global [100010 x i32], align 16
@tot = external dso_local global i32, align 4
@in_d = external dso_local global [100010 x i32], align 16
@out_d = external dso_local global [100010 x i32], align 16
@dfn = external dso_local global [100010 x i32], align 16
@low = external dso_local global [100010 x i32], align 16
@timestamp = external dso_local global i32, align 4
@in_stk = external dso_local global [100010 x i8], align 16
@scc_cnt = external dso_local global i32, align 4
@scc_id = external dso_local global [100010 x i32], align 16
@scc_size = external dso_local global [100010 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 @_Z4initi(i32 noundef %0) #1 {
  %2 = alloca i32, align 4
  %3 = 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 %4

4:                                                ; preds = %34, %1
  %5 = load i32, ptr %3, align 4, !tbaa !5
  %6 = load i32, ptr %2, align 4, !tbaa !5
  %7 = icmp sle i32 %5, %6
  br i1 %7, label %9, label %8

8:                                                ; preds = %4
  call void @llvm.lifetime.end.p0(i64 4, ptr %3) #2
  br label %37

9:                                                ; preds = %4
  %10 = load i32, ptr %3, align 4, !tbaa !5
  %11 = sext i32 %10 to i64
  %12 = getelementptr inbounds [100010 x i32], ptr @low, i64 0, i64 %11
  store i32 0, ptr %12, align 4, !tbaa !5
  %13 = load i32, ptr %3, align 4, !tbaa !5
  %14 = sext i32 %13 to i64
  %15 = getelementptr inbounds [100010 x i32], ptr @dfn, i64 0, i64 %14
  store i32 0, ptr %15, align 4, !tbaa !5
  %16 = load i32, ptr %3, align 4, !tbaa !5
  %17 = sext i32 %16 to i64
  %18 = getelementptr inbounds [100010 x i32], ptr @scc_size, i64 0, i64 %17
  store i32 0, ptr %18, align 4, !tbaa !5
  %19 = load i32, ptr %3, align 4, !tbaa !5
  %20 = sext i32 %19 to i64
  %21 = getelementptr inbounds [100010 x i32], ptr @scc_id, i64 0, i64 %20
  store i32 0, ptr %21, align 4, !tbaa !5
  %22 = load i32, ptr %3, align 4, !tbaa !5
  %23 = sext i32 %22 to i64
  %24 = getelementptr inbounds [100010 x i8], ptr @in_stk, i64 0, i64 %23
  store i8 0, ptr %24, align 1, !tbaa !9
  %25 = load i32, ptr %3, align 4, !tbaa !5
  %26 = sext i32 %25 to i64
  %27 = getelementptr inbounds [100010 x i32], ptr @head, i64 0, i64 %26
  store i32 0, ptr %27, align 4, !tbaa !5
  %28 = load i32, ptr %3, align 4, !tbaa !5
  %29 = sext i32 %28 to i64
  %30 = getelementptr inbounds [100010 x i32], ptr @out_d, i64 0, i64 %29
  store i32 0, ptr %30, align 4, !tbaa !5
  %31 = load i32, ptr %3, align 4, !tbaa !5
  %32 = sext i32 %31 to i64
  %33 = getelementptr inbounds [100010 x i32], ptr @in_d, i64 0, i64 %32
  store i32 0, ptr %33, align 4, !tbaa !5
  br label %34

34:                                               ; preds = %9
  %35 = load i32, ptr %3, align 4, !tbaa !5
  %36 = add nsw i32 %35, 1
  store i32 %36, ptr %3, align 4, !tbaa !5
  br label %4, !llvm.loop !11

37:                                               ; preds = %8
  store i32 0, ptr @tot, align 4, !tbaa !5
  store i32 0, ptr @scc_cnt, align 4, !tbaa !5
  store i32 0, ptr @timestamp, align 4, !tbaa !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 = !{!10, !10, i64 0}
!10 = !{!"bool", !7, i64 0}
!11 = distinct !{!11, !12}
!12 = !{!"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"

@head = external dso_local local_unnamed_addr global [100010 x i32], align 16
@tot = external dso_local local_unnamed_addr global i32, align 4
@in_d = external dso_local local_unnamed_addr global [100010 x i32], align 16
@out_d = external dso_local local_unnamed_addr global [100010 x i32], align 16
@dfn = external dso_local local_unnamed_addr global [100010 x i32], align 16
@low = external dso_local local_unnamed_addr global [100010 x i32], align 16
@timestamp = external dso_local local_unnamed_addr global i32, align 4
@in_stk = external dso_local local_unnamed_addr global [100010 x i8], align 16
@scc_cnt = external dso_local local_unnamed_addr global i32, align 4
@scc_id = external dso_local local_unnamed_addr global [100010 x i32], align 16
@scc_size = external dso_local local_unnamed_addr global [100010 x i32], align 16

; Function Attrs: mustprogress nofree norecurse nosync nounwind willreturn memory(write, argmem: none, inaccessiblemem: none) uwtable
define dso_local void @_Z4initi(i32 noundef %0) local_unnamed_addr #0 {
  %.not11 = icmp slt i32 %0, 0
  br i1 %.not11, label %._crit_edge, label %.lr.ph.preheader

.lr.ph.preheader:                                 ; preds = %1
  %2 = add nuw i32 %0, 1
  %3 = zext i32 %2 to i64
  %4 = shl nuw nsw i64 %3, 2
  tail call void @llvm.memset.p0.i64(ptr noundef nonnull align 16 dereferenceable(1) @low, i8 0, i64 %4, i1 false), !tbaa !5
  tail call void @llvm.memset.p0.i64(ptr noundef nonnull align 16 dereferenceable(1) @dfn, i8 0, i64 %4, i1 false), !tbaa !5
  tail call void @llvm.memset.p0.i64(ptr noundef nonnull align 16 dereferenceable(1) @scc_size, i8 0, i64 %4, i1 false), !tbaa !5
  tail call void @llvm.memset.p0.i64(ptr noundef nonnull align 16 dereferenceable(1) @scc_id, i8 0, i64 %4, i1 false), !tbaa !5
  tail call void @llvm.memset.p0.i64(ptr noundef nonnull align 16 dereferenceable(1) @in_stk, i8 0, i64 %3, i1 false), !tbaa !9
  tail call void @llvm.memset.p0.i64(ptr noundef nonnull align 16 dereferenceable(1) @head, i8 0, i64 %4, i1 false), !tbaa !5
  tail call void @llvm.memset.p0.i64(ptr noundef nonnull align 16 dereferenceable(1) @out_d, i8 0, i64 %4, i1 false), !tbaa !5
  tail call void @llvm.memset.p0.i64(ptr noundef nonnull align 16 dereferenceable(1) @in_d, i8 0, i64 %4, i1 false), !tbaa !5
  br label %._crit_edge

._crit_edge:                                      ; preds = %.lr.ph.preheader, %1
  store i32 0, ptr @tot, align 4, !tbaa !5
  store i32 0, ptr @scc_cnt, align 4, !tbaa !5
  store i32 0, ptr @timestamp, align 4, !tbaa !5
  ret void
}

; 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 willreturn memory(write, 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 = !{!10, !10, i64 0}
!10 = !{!"bool", !7, i64 0}


; Effective O3 passes: EarlyCSEPass,GVNPass,GlobalOptPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,LoopIdiomRecognizePass,LoopRotatePass,LoopSimplifyPass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass,TailCallElimPass