; LLVM IR from Dev-XYS/Algorithms :: Link-Cut-Tree(with-Reverse).ll (Z6accessi)

; 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"

@ch = external dso_local global [10010 x [2 x i32]], align 16
@fa = external dso_local global [10010 x i32], align 16
@tf = external dso_local global [10010 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 uwtable
declare dso_local void @_Z5splayii(i32 noundef, i32 noundef) #1

; Function Attrs: mustprogress uwtable
declare dso_local noundef i32 @_Z8find_topi(i32 noundef) #1

; Function Attrs: mustprogress uwtable
define dso_local void @_Z6accessi(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 = %32, %1
  %5 = load i32, ptr %2, align 4, !tbaa !5
  %6 = icmp ne i32 %5, 0
  br i1 %6, label %7, label %48

7:                                                ; preds = %4
  %8 = load i32, ptr %2, align 4, !tbaa !5
  call void @_Z5splayii(i32 noundef %8, i32 noundef 0)
  %9 = load i32, ptr %2, align 4, !tbaa !5
  %10 = sext i32 %9 to i64
  %11 = getelementptr inbounds [10010 x [2 x i32]], ptr @ch, i64 0, i64 %10
  %12 = getelementptr inbounds [2 x i32], ptr %11, i64 0, i64 1
  %13 = load i32, ptr %12, align 4, !tbaa !5
  %14 = sext i32 %13 to i64
  %15 = getelementptr inbounds [10010 x i32], ptr @fa, i64 0, i64 %14
  store i32 0, ptr %15, align 4, !tbaa !5
  %16 = load i32, ptr %2, align 4, !tbaa !5
  %17 = sext i32 %16 to i64
  %18 = getelementptr inbounds [10010 x [2 x i32]], ptr @ch, i64 0, i64 %17
  %19 = getelementptr inbounds [2 x i32], ptr %18, i64 0, i64 1
  %20 = load i32, ptr %19, align 4, !tbaa !5
  %21 = icmp ne i32 %20, 0
  br i1 %21, label %22, label %32

22:                                               ; preds = %7
  %23 = load i32, ptr %2, align 4, !tbaa !5
  %24 = load i32, ptr %2, align 4, !tbaa !5
  %25 = sext i32 %24 to i64
  %26 = getelementptr inbounds [10010 x [2 x i32]], ptr @ch, i64 0, i64 %25
  %27 = getelementptr inbounds [2 x i32], ptr %26, i64 0, i64 1
  %28 = load i32, ptr %27, align 4, !tbaa !5
  %29 = call noundef i32 @_Z8find_topi(i32 noundef %28)
  %30 = sext i32 %29 to i64
  %31 = getelementptr inbounds [10010 x i32], ptr @tf, i64 0, i64 %30
  store i32 %23, ptr %31, align 4, !tbaa !5
  br label %32

32:                                               ; preds = %22, %7
  %33 = load i32, ptr %3, align 4, !tbaa !5
  %34 = load i32, ptr %2, align 4, !tbaa !5
  %35 = sext i32 %34 to i64
  %36 = getelementptr inbounds [10010 x [2 x i32]], ptr @ch, i64 0, i64 %35
  %37 = getelementptr inbounds [2 x i32], ptr %36, i64 0, i64 1
  store i32 %33, ptr %37, align 4, !tbaa !5
  %38 = load i32, ptr %2, align 4, !tbaa !5
  %39 = load i32, ptr %3, align 4, !tbaa !5
  %40 = sext i32 %39 to i64
  %41 = getelementptr inbounds [10010 x i32], ptr @fa, i64 0, i64 %40
  store i32 %38, ptr %41, align 4, !tbaa !5
  %42 = load i32, ptr %2, align 4, !tbaa !5
  %43 = call noundef i32 @_Z8find_topi(i32 noundef %42)
  store i32 %43, ptr %3, align 4, !tbaa !5
  %44 = load i32, ptr %3, align 4, !tbaa !5
  %45 = sext i32 %44 to i64
  %46 = getelementptr inbounds [10010 x i32], ptr @tf, i64 0, i64 %45
  %47 = load i32, ptr %46, align 4, !tbaa !5
  store i32 %47, ptr %2, align 4, !tbaa !5
  br label %4, !llvm.loop !9

48:                                               ; preds = %4
  call void @llvm.lifetime.end.p0(i64 4, ptr %3) #2
  ret void
}

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { 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 #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"

@ch = external dso_local local_unnamed_addr global [10010 x [2 x i32]], align 16
@fa = external dso_local local_unnamed_addr global [10010 x i32], align 16
@tf = external dso_local local_unnamed_addr global [10010 x i32], align 16

; Function Attrs: mustprogress uwtable
declare dso_local void @_Z5splayii(i32 noundef, i32 noundef) local_unnamed_addr #0

; Function Attrs: mustprogress uwtable
declare dso_local noundef i32 @_Z8find_topi(i32 noundef) local_unnamed_addr #0

; Function Attrs: mustprogress uwtable
define dso_local void @_Z6accessi(i32 noundef %0) local_unnamed_addr #0 {
  %.not15 = icmp eq i32 %0, 0
  br i1 %.not15, label %._crit_edge, label %.lr.ph

.lr.ph:                                           ; preds = %1, %11
  %.017 = phi i32 [ %14, %11 ], [ 0, %1 ]
  %.01216 = phi i32 [ %17, %11 ], [ %0, %1 ]
  tail call void @_Z5splayii(i32 noundef %.01216, i32 noundef 0)
  %2 = sext i32 %.01216 to i64
  %3 = getelementptr inbounds [10010 x [2 x i32]], ptr @ch, i64 0, i64 %2, i64 1
  %4 = load i32, ptr %3, align 4, !tbaa !5
  %5 = sext i32 %4 to i64
  %6 = getelementptr inbounds [10010 x i32], ptr @fa, i64 0, i64 %5
  store i32 0, ptr %6, align 4, !tbaa !5
  %.not14 = icmp eq i32 %4, 0
  br i1 %.not14, label %11, label %7

7:                                                ; preds = %.lr.ph
  %8 = tail call noundef i32 @_Z8find_topi(i32 noundef %4)
  %9 = sext i32 %8 to i64
  %10 = getelementptr inbounds [10010 x i32], ptr @tf, i64 0, i64 %9
  store i32 %.01216, ptr %10, align 4, !tbaa !5
  br label %11

11:                                               ; preds = %7, %.lr.ph
  store i32 %.017, ptr %3, align 4, !tbaa !5
  %12 = sext i32 %.017 to i64
  %13 = getelementptr inbounds [10010 x i32], ptr @fa, i64 0, i64 %12
  store i32 %.01216, ptr %13, align 4, !tbaa !5
  %14 = tail call noundef i32 @_Z8find_topi(i32 noundef %.01216)
  %15 = sext i32 %14 to i64
  %16 = getelementptr inbounds [10010 x i32], ptr @tf, i64 0, i64 %15
  %17 = load i32, ptr %16, align 4, !tbaa !5
  %.not = icmp eq i32 %17, 0
  br i1 %.not, label %._crit_edge, label %.lr.ph, !llvm.loop !9

._crit_edge:                                      ; preds = %11, %1
  ret void
}

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" }

!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,GlobalOptPass,InferFunctionAttrsPass,InstCombinePass,JumpThreadingPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,SROAPass,SimplifyCFGPass,TailCallElimPass