<commit_before>//===---- llvm/Analysis/ScalarEvolutionExpander.h - SCEV Exprs --*- C++ -*-===//
//
//                     The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file defines the classes used to generate code from scalar expressions.
//
//===----------------------------------------------------------------------===//

#ifndef LLVM_ANALYSIS_SCALAREVOLUTION_EXPANDER_H
#define LLVM_ANALYSIS_SCALAREVOLUTION_EXPANDER_H

#include "llvm/Analysis/ScalarEvolutionExpressions.h"
#include "llvm/Support/IRBuilder.h"
#include "llvm/Support/TargetFolder.h"
#include <set>

namespace llvm {
  /// SCEVExpander - This class uses information about analyze scalars to
  /// rewrite expressions in canonical form.
  ///
  /// Clients should create an instance of this class when rewriting is needed,
  /// and destroy it when finished to allow the release of the associated
  /// memory.
  class SCEVExpander : public SCEVVisitor<SCEVExpander, Value*> {
    ScalarEvolution &SE;
    std::map<std::pair<const SCEV *, Instruction *>, AssertingVH<Value> >
      InsertedExpressions;
    std::set<Value*> InsertedValues;

    /// PostIncLoop - When non-null, expanded addrecs referring to the given
    /// loop expanded in post-inc mode. For example, expanding {1,+,1}<L> in
    /// post-inc mode returns the add instruction that adds one to the phi
    /// for {0,+,1}<L>, as opposed to a new phi starting at 1. This is only
    /// supported in non-canonical mode.
    const Loop *PostIncLoop;

    /// IVIncInsertPos - When this is non-null, addrecs expanded in the
    /// loop it indicates should be inserted with increments at
    /// IVIncInsertPos.
    const Loop *IVIncInsertLoop;

    /// IVIncInsertPos - When expanding addrecs in the IVIncInsertLoop loop,
    /// insert the IV increment at this position.
    Instruction *IVIncInsertPos;

    /// CanonicalMode - When true, expressions are expanded in "canonical"
    /// form. In particular, addrecs are expanded as arithmetic based on
    /// a canonical induction variable. When false, expression are expanded
    /// in a more literal form.
    bool CanonicalMode;

  protected:
    typedef IRBuilder<true, TargetFolder> BuilderType;
    BuilderType Builder;

    friend struct SCEVVisitor<SCEVExpander, Value*>;
  public:
    /// SCEVExpander - Construct a SCEVExpander in "canonical" mode.
    explicit SCEVExpander(ScalarEvolution &se)
      : SE(se), PostIncLoop(0), IVIncInsertLoop(0), CanonicalMode(true),
        Builder(se.getContext(), TargetFolder(se.TD)) {}

    /// clear - Erase the contents of the InsertedExpressions map so that users
    /// trying to expand the same expression into multiple BasicBlocks or
    /// different places within the same BasicBlock can do so.
    void clear() { InsertedExpressions.clear(); }

    /// getOrInsertCanonicalInductionVariable - This method returns the
    /// canonical induction variable of the specified type for the specified
    /// loop (inserting one if there is none).  A canonical induction variable
    /// starts at zero and steps by one on each iteration.
    Value *getOrInsertCanonicalInductionVariable(const Loop *L, const Type *Ty);

    /// expandCodeFor - Insert code to directly compute the specified SCEV
    /// expression into the program.  The inserted code is inserted into the
    /// specified block.
    Value *expandCodeFor(const SCEV *SH, const Type *Ty, Instruction *I) {
      BasicBlock::iterator IP = I;
      while (isInsertedInstruction(IP)) ++IP;
      Builder.SetInsertPoint(IP->getParent(), IP);
      return expandCodeFor(SH, Ty);<commit_msg>Remove a 'protected' keyword, now that SCEVExpander is no longer intended to be subclassed.<commit_after>//===---- llvm/Analysis/ScalarEvolutionExpander.h - SCEV Exprs --*- C++ -*-===//
//
//                     The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file defines the classes used to generate code from scalar expressions.
//
//===----------------------------------------------------------------------===//

#ifndef LLVM_ANALYSIS_SCALAREVOLUTION_EXPANDER_H
#define LLVM_ANALYSIS_SCALAREVOLUTION_EXPANDER_H

#include "llvm/Analysis/ScalarEvolutionExpressions.h"
#include "llvm/Support/IRBuilder.h"
#include "llvm/Support/TargetFolder.h"
#include <set>

namespace llvm {
  /// SCEVExpander - This class uses information about analyze scalars to
  /// rewrite expressions in canonical form.
  ///
  /// Clients should create an instance of this class when rewriting is needed,
  /// and destroy it when finished to allow the release of the associated
  /// memory.
  class SCEVExpander : public SCEVVisitor<SCEVExpander, Value*> {
    ScalarEvolution &SE;
    std::map<std::pair<const SCEV *, Instruction *>, AssertingVH<Value> >
      InsertedExpressions;
    std::set<Value*> InsertedValues;

    /// PostIncLoop - When non-null, expanded addrecs referring to the given
    /// loop expanded in post-inc mode. For example, expanding {1,+,1}<L> in
    /// post-inc mode returns the add instruction that adds one to the phi
    /// for {0,+,1}<L>, as opposed to a new phi starting at 1. This is only
    /// supported in non-canonical mode.
    const Loop *PostIncLoop;

    /// IVIncInsertPos - When this is non-null, addrecs expanded in the
    /// loop it indicates should be inserted with increments at
    /// IVIncInsertPos.
    const Loop *IVIncInsertLoop;

    /// IVIncInsertPos - When expanding addrecs in the IVIncInsertLoop loop,
    /// insert the IV increment at this position.
    Instruction *IVIncInsertPos;

    /// CanonicalMode - When true, expressions are expanded in "canonical"
    /// form. In particular, addrecs are expanded as arithmetic based on
    /// a canonical induction variable. When false, expression are expanded
    /// in a more literal form.
    bool CanonicalMode;

    typedef IRBuilder<true, TargetFolder> BuilderType;
    BuilderType Builder;

    friend struct SCEVVisitor<SCEVExpander, Value*>;

  public:
    /// SCEVExpander - Construct a SCEVExpander in "canonical" mode.
    explicit SCEVExpander(ScalarEvolution &se)
      : SE(se), PostIncLoop(0), IVIncInsertLoop(0), CanonicalMode(true),
        Builder(se.getContext(), TargetFolder(se.TD)) {}

    /// clear - Erase the contents of the InsertedExpressions map so that users
    /// trying to expand the same expression into multiple BasicBlocks or
    /// different places within the same BasicBlock can do so.
    void clear() { InsertedExpressions.clear(); }

    /// getOrInsertCanonicalInductionVariable - This method returns the
    /// canonical induction variable of the specified type for the specified
    /// loop (inserting one if there is none).  A canonical induction variable
    /// starts at zero and steps by one on each iteration.
    Value *getOrInsertCanonicalInductionVariable(const Loop *L, const Type *Ty);

    /// expandCodeFor - Insert code to directly compute the specified SCEV
    /// expression into the program.  The inserted code is inserted into the
    /// specified block.
    Value *expandCodeFor(const SCEV *SH, const Type *Ty, Instruction *I) {
      BasicBlock::iterator IP = I;
      while (isInsertedInstruction(IP)) ++IP;
      Builder.SetInsertPoint(IP->getParent(), IP);
      return expandCodeFor(SH, Ty);
{'fraction_non_alphanumeric': 0.13398692810457516, 'fraction_numerical': 0.0018300653594771241, 'mean_word_length': 2.741320293398533, 'pattern_counts': {'":': 0, '<': 23, '<?xml version=': 0, '>': 25, 'https://': 0, 'lorem ipsum': 0, 'www.': 0, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 0, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
{'dir': 'git-commits-cleaned', 'id': '5993074', 'n_tokens_mistral': 2110, 'n_tokens_neox': 2025, 'n_words': 761}