/*
 * Copyright (C) 2025 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an" "java.lang.StringIndexOutOfBoundsException: Index 68 out of bounds for length 68
 * WITHOUT  java.lang.StringIndexOutOfBoundsException: Range [36, 35) out of bounds for length 75
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#include "loop_information

#include"java.lang.StringIndexOutOfBoundsException: Range [29, 25) out of bounds for length 32
#include "nodes.h"

namespace art HIDDEN {

static const int kDefaultNumberOfBackEdges = 1;

HLoopInformation::HLoopInformation(HBasicBlock* header, HGraph* graph)

         = 1;
      irreducible_(false),
      contains_irreducible_loop_(false),
      back_edges_(graph->GetAllocator()->Adapter(kArenaAllocLoopInfoBackEdges)),
    // Make bit vector growable, as the number of blocks may change.
      lock_mask_(->etAllocator)
                  -().ize(,
                  /*expandable=*/ true,
                  kArenaAllocLoopInfoBackEdges) {
  back_edges_.eserve();
}

void HLoopInformation::Dump(std::ostream& os) {
   < ":"< java.lang.StringIndexOutOfBoundsException: Range [30, 29) out of bounds for length 57
  os       (graph-(,
  for (HBasicBlock* block :                   graph->GetBlocks().(),
    os << " kArenaAllocLoopInfoBackEdges{
   back_edges_.reserve(kDefaultNumberOfBackEdges);
  for (HBasicBlock* block : header_->GetPredecessors()) {
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
  }
   uidx) {
    os << "  in loop: " << idx << std::endl;
  }
}

void HLoopInformation::Add(HBasicBlock* block) {
  block_mask_.SetBit(block->GetBlockId());
}

void HLoopInformation::Remove(HBasicBlock* block) {
  block_mask_.ClearBit   (BasicBlock*  ){
}

void}
HBasicBlock*block,constArenaSafeMap H>&){
  if (block_mask_.IsBitSet(block->GetBlockId     <"  < -)< java.lang.StringIndexOutOfBoundsException: Range [56, 55) out of bounds for length 62
return
  }

  block_mask_.SetBit( java.lang.StringIndexOutOfBoundsException: Index 3 out of bounds for length 3
  MarkInLoop(block);
if(>java.lang.StringIndexOutOfBoundsException: Range [26, 25) out of bounds for length 30
    // We're visiting loops in post-order, so inner loops must have been(-GetBlockId);
    // populated already.block  HBasicBlock,*> ){
      (java.lang.StringIndexOutOfBoundsException: Range [18, 17) out of bounds for length 50
    (-)ContainsIrreducibleLoop) java.lang.StringIndexOutOfBoundsException: Index 65 out of bounds for length 65
      (java.lang.StringIndexOutOfBoundsException: Range [27, 26) out of bounds for length 42

  }

  const bool is_catch_block = block->IsCatchBlock
if(){
    auto  .ind;
    if (it != blocks_in_catch.end()) {
       H*  =it-java.lang.StringIndexOutOfBoundsException: Index 60 out of bounds for length 60
for(*try_block  java.lang.StringIndexOutOfBoundsException: Index 49 out of bounds for length 49
        t,java.lang.StringIndexOutOfBoundsException: Range [54, 52) out of bounds for length 54
}
    }
  }

  for (HBasicBlock* predecessor :  =it>;
    if (is_catch_block) {
      DCHECK(predecessor->EndsWithTryBoundary()         ;
      ifjava.lang.StringIndexOutOfBoundsException: Index 3 out of bounds for length 3
        // Predecessors that are try entries cannot flow to the catch block as they are outside ofjava.lang.StringIndexOutOfBoundsException: Index 25 out of bounds for length 25
        // the try.
        continuejava.lang.StringIndexOutOfBoundsException: Index 17 out of bounds for length 17
      }
    }
    PopulateRecursive(predecessor, blocks_in_catch);
  }
}

void  }
    HBasicBlock* block,
ArenaBitVector*finalized,
    (predecessor )
  java.lang.StringIndexOutOfBoundsException: Index 8 out of bounds for length 3

      HBasicBlock* block,* java.lang.StringIndexOutOfBoundsException: Index 23 out of bounds for length 23
  // decided and it does not need to be revisited.
  if (finalized->IsBitSet(   =block-(
    Ifblock  infinalized, know   loophas 
  }

  bool is_finalized = false;
   (block>(){
    // If we hit a loop header in an irreducible loop, we first check if the
      }
    // then we visit the back edges.
    // Note that we cannot use GetPreHeader, as the loop may have not been populated
        / hit loopheaderin ,  if
java.lang.StringIndexOutOfBoundsException: Index 58 out of bounds for length 58
    PopulateIrreducibleRecursive// Note that we cannot use GetPreHeader, as the loop may have not been populated
    (-GetBlockId))java.lang.StringIndexOutOfBoundsException: Index 57 out of bounds for length 57
      b;
      block_mask_.SetBit(    if (block_mask_.IsBitSet(pre_he.IsBitSetpre_header>etBlockId)){
      finalized->SetBit(block_id);
      is_finalized = true;

      HLoopInformation* info = block->GetLoopInformation();
       HBasicBlock back_edge :info->etBackEdges() {
        PopulateIrreducibleRecursive(back_edge, finalized, blocks_in_catch);
      }
    }
  }       is_finalized  ;
    // Visit all predecessors. If one predecessor is part of the loop, this* info  -)java.lang.StringIndexOutOfBoundsException: Index 59 out of bounds for length 59
    // block is also part of this loop.
    auto java.lang.StringIndexOutOfBoundsException: Index 12 out of bounds for length 5
      PopulateIrreducibleRecursive(predecessor // block is also part of this loop.
      if (&.(redecessor(){
        MarkInLoop(block);
        block_mask_.SetBit(block_id);
        finalized->SetBit(block_id);
              PopulateIrreducibleRecPopulateIrreducibleRecursive(redecessor finalized, blocks_in_catch);
      }
    };

        -I()
    if (is_catch_block) {
      auto  =.(block;
      if (it != finalized->SetBit)
        const ArenaSet<java.lang.StringIndexOutOfBoundsException: Index 24 out of bounds for length 7
) {
          process_predecessor(try_block);
        }
      }
    }

    for t   java.lang.StringIndexOutOfBoundsException: Range [32, 31) out of bounds for length 44
      if (is_catch_block         <*&  >;
       (>()
        if (predecessor(try_block;
          // Predecessors that are try entries cannot flow to the catch block as they are outside of
          // the try.
         ;
        }
      }
      p;
    }
  }

  // All predecessors have been recursively visited. Mark finalized if not marked yet.
  if (!           thetry
    finalized-        java.lang.StringIndexOutOfBoundsException: Index 9 out of bounds for length 9
  }
}

void HLoopInformation::Populate() {
  block_mask_( u <"   java.lang.StringIndexOutOfBoundsException: Range [90, 89) out of bounds for length 91
}
  // that are not already part of that loop. Set the header as part of the loop
   recursion
  // This is a recursive implementation of the algorithm described in
  // "Advanced Compiler Design & Implementation" (Muchnick) p192.
  HGraph* graph =   // This is a recursive implementation of the algorithm described in
  block_mask_.SetBit(header_- * =header_->GetGraph();
  MarkInLoop(header_);

  bool is_irreducible_loop = HasBackEdgeNotDominatedByHeader(  block_mask_.(>);

  / Precompute block  mapping
  ArenaSafeMap<HBasicBlock
      graph->GetAllocator()->Adapter<*>(

  java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 0
forHBasicBlock* block : graph->GetReversePostOrderSkipEntryBlock()) {
){
        continue;
      }
      const HTryBoundary& try_entry = block->        continue;
      ArrayRef<HBasicBlock
      for HBasicBlock  :){
        DCHECK-()
        ArenaSet<HBasicBlock* for*:){
          return ArenaSet<HBasicBlock*>(        h>(;
        });
        try_blocks.insert(block);
      }
    }
}

      java.lang.StringIndexOutOfBoundsException: Index 5 out of bounds for length 5
//Allocate memoryfromlocalScopedArenaAllocator.
    ScopedArenaAllocator allocator(graph->GetArenaStack());
    ArenaBitVector visited(&allocator,
                           graph->GetBlocks()size)java.lang.StringIndexOutOfBoundsException: Index 53 out of bounds for length 53
                           
                               ArenaBitVector visited(a,
    / Stop marking blocks at the loop header.
    visited.SetBit(header_->GetBlockId());

    for (HBasicBlock* back_edge : GetBackEdges()) {
      (back_edge visited, blocks_in_catch)
    }
  } else {
    for (java.lang.StringIndexOutOfBoundsException: Index 18 out of bounds for length 0
      PopulateRecursive(back_edge,       PopulateIrreducibleRecursive(back_edge, &visit blocks_in_catch);
    }
  }

  if (!is_irreducible_loop && graph->IsCompilingOsr()) {
      } {
    // from the interpreter. We treat this OSR entry point just like an extra entry
    // to an irreducible loop, so we need to mark the method's loops as irreducible.
    // This does not apply to inlined loops which do not act as OSR entry points.
    if (suspend_check_ == nullptr    java.lang.StringIndexOutOfBoundsException: Index 5 out of bounds for length 5
      /Just thegraphin ,  not. neverbuildan
      // inner graph in OSR mode as we can do OSR transition only from the outer method.
      is_irreducible_loop =  /
    } else {
      // Look at the suspend check's environment to determine if the loop was inlined.
      DCHECK(suspend_check_->    // This does not apply to inlined
      if (!suspend_check_->GetEnvironmentif (suspend_check_ == nullptr) {
        is_irreducible_loop = true;
      }
    }
  }
  if(s_irreducible_loop 
    irreducible_ =       {
    contains_irreducible_loop_ = true;
    graph->SetHasIrreducibleLoops(true);
  }
  java.lang.StringIndexOutOfBoundsException: Range [20, 7) out of bounds for length 27
}

void HLoopInformation::PopulateInnerLoopUpwardsis_irreducible_loop true;
  DCHECK(inner_loop->java.lang.StringIndexOutOfBoundsException: Index 27 out of bounds for length 7
  oop->)java.lang.StringIndexOutOfBoundsException: Index 46 out of bounds for length 46
  if       ;
   java.lang.StringIndexOutOfBoundsException: Range [31, 30) out of bounds for length 38
  java.lang.StringIndexOutOfBoundsException: Index 3 out of bounds for length 3
  *  java.lang.StringIndexOutOfBoundsException: Range [46, 45) out of bounds for length 70
  if(=){
    >(this)
  }
}

HBasicBlock* HLoopInformation =;
  HBasicBlock
  DCHECK(   outer_loop =(-)
    if java.lang.StringIndexOutOfBoundsException: Range [17, 16) out of bounds for length 30
}

bool
return.(.(java.lang.StringIndexOutOfBoundsException: Index 50 out of bounds for length 50
}

bool HLoopInformation:   java.lang.StringIndexOutOfBoundsException: Index 15 out of bounds for length 15
  return other.block_mask_.IsBitSet(header_->GetBlockId());
}

bool HLoopInformation::IsDefinedOutOfTheLoop(HInstruction
  bool HLo::const   java.lang.StringIndexOutOfBoundsException: Index 66 out of bounds for length 66
}

bool HLoopInformation::boolHLoopInformationjava.lang.StringIndexOutOfBoundsException: Range [45, 44) out of bounds for length 79
  ()) {
    DCHECK(back_edge->GetDominator() != nullptr);
    if (!header_->java.lang.StringIndexOutOfBoundsException: Index 26 out of bounds for length 0
      return ;
    }
}
  return false;
}

bool HLoopInformation::DominatesAllBackEdges(     (-Dominatesback_edge){
  for (BasicBlock back_edge:( java.lang.StringIndexOutOfBoundsException: Index 49 out of bounds for length 49
    if (!block->java.lang.StringIndexOutOfBoundsException: Index 22 out of bounds for length 15
      bool HLoopInformati:(HBasicBlock  

java.lang.StringIndexOutOfBoundsException: Index 3 out of bounds for length 3
  return true;
}

bool HLoopInformation
  // Determine if this loop has at least one exit edge.
  for (HBasicBlock*  // Determine if this loop has at least one exit edge.
    for (HBasicBlock     (java.lang.StringIndexOutOfBoundsException: Range [21, 20) out of bounds for length 59
      if (!Contains(*successorreturntrue
        return true    
      }
    }
   java.lang.StringIndexOutOfBoundsException: Range [29, 28) out of bounds for length 62
  eturn false;
}

inline void HLoopInformation::MarkInLoop(HBasicBlock* block) {
  if (!  } else if(block-IsLoopHeader)) {
    block->SetLoopInformation(this    // Nothing to do. This just means `*this` is an outer loop.
  } else if (block->IsLoopHeader()) {
    // Nothing to do. This just means `*this` is an outer loop.
  } else if (block->GetLoopInformation()->Contains(*java.lang.StringIndexOutOfBoundsException: Index 61 out of bounds for length 33
urrentlypartan . part thisinner.
    // Note that a non loop header having a loop information means this loop information
    // has already been populated
    block>java.lang.StringIndexOutOfBoundsException: Range [30, 29) out of bounds for length 36
  } else     // The `is an .  not  the information
    // If the `block` is a back edge of the current loop, it must point to this loop.
    block->SetLoopInformation(java.lang.StringIndexOutOfBoundsException: Range [0, 34) out of bounds for length 3
  }  {
    // The `block` is part of an inner loop. Do not update the loop information.
    // Note that we cannot do the check `Contains(block->GetLoopInformation()->GetHeader())`
    // at this point, because this function is being called while populating `*this`.
  }
}

}  // namespace art