hphp/hhbbc/optimize.h

   1 /*
   2    +----------------------------------------------------------------------+
   3    | HipHop for PHP                                                       |
   4    +----------------------------------------------------------------------+
   5    | Copyright (c) 2010-present Facebook, Inc. (http://www.facebook.com)  |
   6    +----------------------------------------------------------------------+
   7    | This source file is subject to version 3.01 of the PHP license,      |
   8    | that is bundled with this package in the file LICENSE, and is        |
   9    | available through the world-wide-web at the following url:           |
  10    | http://www.php.net/license/3_01.txt                                  |
  11    | If you did not receive a copy of the PHP license and are unable to   |
  12    | obtain it through the world-wide-web, please send a note to          |
  13    | license@php.net so we can mail you a copy immediately.               |
  14    +----------------------------------------------------------------------+
  15 */
  16 #ifndef incl_HPHP_OPTIMIZE_H_
  17 #define incl_HPHP_OPTIMIZE_H_
  18
  19 #include "hphp/hhbbc/context.h"
  20
  21 namespace HPHP { namespace HHBBC {
  22
  23 //////////////////////////////////////////////////////////////////////
  24
  25 struct Index;
  26 struct FuncAnalysis;
  27 struct Bytecode;
  28 struct BlockUpdateInfo;
  29
  30 /*
  31  * Use information from an analyze call to perform various
  32  * optimizations on a function.
  33  *
  34  * The Index should be unchanged since the one that was provided to
  35  * the corresponding analyze_func call.
  36  *
  37  * This routine may modify the php::Blocks attached to the passed-in
  38  * php::Func, but it won't modify the top-level meta-data in the
  39  * php::Func itself.
  40  */
  41 void optimize_func(const Index&, FuncAnalysis&&, bool isFinal);
  42
  43 void update_bytecode(
  44     php::Func* func,
  45     CompactVector<std::pair<BlockId, BlockUpdateInfo>>&& blockUpdates,
  46     FuncAnalysis* = nullptr);
  47
  48 /*
  49  * Optimize property type hints for a particular class.
  50  */
  51 void optimize_class_prop_type_hints(const Index& index, Context ctx);
  52
  53 /*
  54  * Return a bytecode to generate the value in cell
  55  */
  56 Bytecode gen_constant(const TypedValue& cell);
  57
  58 //////////////////////////////////////////////////////////////////////
  59
  60 }}
  61
  62 #endif