kc3-lang/angle/src/compiler/translator/Cache.h

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• Author : Dmitry Skiba
  Date : 2015-07-10 14:54:00
  Hash : 01971113
  Message : Cache TTypes. *re-land with build fix for Win/Release* This change saves us ~70KiB per compiler with just ~3KiB of cache. BUG=492725 Change-Id: I4382c55b2480f70b00c5d117fcb7e0c51d0dfbb4 Reviewed-on: https://chromium-review.googlesource.com/284735 Tested-by: Jamie Madill <jmadill@chromium.org> Reviewed-by: Dmitry Skiba <dskiba@google.com> Reviewed-by: Alexis Hétu <sugoi@chromium.org>

• src/compiler/translator/Cache.h

• //
  // Copyright (c) 2015 The ANGLE Project Authors. All rights reserved.
  // Use of this source code is governed by a BSD-style license that can be
  // found in the LICENSE file.
  //
  
  // Cache.h: Implements a cache for various commonly created objects.
  
  #ifndef COMPILER_TRANSLATOR_CACHE_H_
  #define COMPILER_TRANSLATOR_CACHE_H_
  
  #include <stdint.h>
  #include <string.h>
  #include <map>
  
  #include "compiler/translator/Types.h"
  #include "compiler/translator/PoolAlloc.h"
  
  class TCache
  {
    public:
  
      static void initialize();
      static void destroy();
  
      static const TType *getType(TBasicType basicType,
                                  TPrecision precision)
      {
          return getType(basicType, precision, EvqTemporary,
                         1, 1);
      }
      static const TType *getType(TBasicType basicType,
                                  unsigned char primarySize = 1,
                                  unsigned char secondarySize = 1)
      {
          return getType(basicType, EbpUndefined, EvqGlobal,
                         primarySize, secondarySize);
      }
      static const TType *getType(TBasicType basicType,
                                  TQualifier qualifier,
                                  unsigned char primarySize = 1,
                                  unsigned char secondarySize = 1)
      {
          return getType(basicType, EbpUndefined, qualifier,
                         primarySize, secondarySize);
      }
      static const TType *getType(TBasicType basicType,
                                  TPrecision precision,
                                  TQualifier qualifier,
                                  unsigned char primarySize,
                                  unsigned char secondarySize);
  
    private:
      TCache()
      {
      }
  
      union TypeKey
      {
          TypeKey(TBasicType basicType,
                  TPrecision precision,
                  TQualifier qualifier,
                  unsigned char primarySize,
                  unsigned char secondarySize);
  
          typedef uint8_t EnumComponentType;
          struct
          {
              EnumComponentType basicType;
              EnumComponentType precision;
              EnumComponentType qualifier;
              unsigned char primarySize;
              unsigned char secondarySize;
          } components;
          uint64_t value;
  
          bool operator < (const TypeKey &other) const
          {
              return value < other.value;
          }
      };
      typedef std::map<TypeKey, const TType*> TypeMap;
  
      TypeMap mTypes;
      TPoolAllocator mAllocator;
  
      static TCache *sCache;
  };
  
  #endif  // COMPILER_TRANSLATOR_CACHE_H_