Mirek Klimos
90b7170582
No emitted bytecode relies on Continuation being stored in local 0 anymore. Stop using local 0 for this purpose and compute offset to the Continuation at JIT time. 16 bytes of memory freed. At this point all locals of Continuation construction wrapper share the same indices with their respective locals of Continuation body, which should allow further optimizations.
78 linhas
2.8 KiB
C++
78 linhas
2.8 KiB
C++
/*
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+----------------------------------------------------------------------+
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| HipHop for PHP |
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+----------------------------------------------------------------------+
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| Copyright (c) 2010-2013 Facebook, Inc. (http://www.facebook.com) |
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+----------------------------------------------------------------------+
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| This source file is subject to version 3.01 of the PHP license, |
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| that is bundled with this package in the file LICENSE, and is |
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| available through the world-wide-web at the following url: |
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| http://www.php.net/license/3_01.txt |
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| If you did not receive a copy of the PHP license and are unable to |
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| obtain it through the world-wide-web, please send a note to |
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| license@php.net so we can mail you a copy immediately. |
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+----------------------------------------------------------------------+
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*/
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#ifndef incl_HPHP_SIMPLE_VARIABLE_H_
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#define incl_HPHP_SIMPLE_VARIABLE_H_
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#include "hphp/compiler/expression/expression.h"
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namespace HPHP {
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///////////////////////////////////////////////////////////////////////////////
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class Symbol;
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DECLARE_BOOST_TYPES(SimpleVariable);
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class SimpleVariable : public Expression {
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public:
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SimpleVariable(EXPRESSION_CONSTRUCTOR_PARAMETERS,
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const std::string &name,
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const std::string &docComment = "");
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DECLARE_BASE_EXPRESSION_VIRTUAL_FUNCTIONS;
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virtual int getLocalEffects() const;
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virtual bool isThis() const { return m_this;}
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bool isSuperGlobal() const { return m_superGlobal || m_globals; }
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virtual bool isRefable(bool checkError = false) const {
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return checkError || !m_this;
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}
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virtual TypePtr inferAndCheck(AnalysisResultPtr ar, TypePtr type,
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bool coerce);
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virtual bool canonCompare(ExpressionPtr e) const;
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virtual void setContext(Context context);
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const std::string &getName() const { return m_name;}
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const std::string &getDocComment() const {
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return m_docComment;
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}
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Symbol *getSymbol() const { return m_sym; }
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bool couldBeAliased() const;
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bool canKill(bool unset) const;
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bool isHidden() const;
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bool checkUnused() const;
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bool getAlwaysStash() const { return m_alwaysStash; }
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void setAlwaysStash() { m_alwaysStash = true; }
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void updateSymbol(SimpleVariablePtr src);
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void coalesce(SimpleVariablePtr other);
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private:
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std::string m_name;
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std::string m_docComment;
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TypePtr m_superGlobalType;
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Symbol *m_sym;
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Symbol *m_originalSym;
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unsigned m_this : 1; // whether this is a legitimate $this
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unsigned m_globals : 1; // whether is is $GLOBAL
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unsigned m_superGlobal : 1;
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unsigned m_alwaysStash : 1;
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};
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///////////////////////////////////////////////////////////////////////////////
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}
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#endif // incl_HPHP_SIMPLE_VARIABLE_H_
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