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/*
* Copyright (C) 2011 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "config.h"
#include "DFGCapabilities.h"
#include "CodeBlock.h"
#include "Interpreter.h"
namespace JSC { namespace DFG {
#if ENABLE(DFG_JIT)
template<bool (*canHandleOpcode)(OpcodeID)>
bool canHandleOpcodes(CodeBlock* codeBlock)
{
Interpreter* interpreter = codeBlock->globalData()->interpreter;
Instruction* instructionsBegin = codeBlock->instructions().begin();
unsigned instructionCount = codeBlock->instructions().size();
for (unsigned bytecodeOffset = 0; bytecodeOffset < instructionCount; ) {
switch (interpreter->getOpcodeID(instructionsBegin[bytecodeOffset].u.opcode)) {
#define DEFINE_OP(opcode, length) \
case opcode: \
if (!canHandleOpcode(opcode)) \
return false; \
bytecodeOffset += length; \
break;
FOR_EACH_OPCODE_ID(DEFINE_OP)
#undef DEFINE_OP
default:
ASSERT_NOT_REACHED();
break;
}
}
return true;
}
bool canCompileOpcodes(CodeBlock* codeBlock)
{
return canHandleOpcodes<canCompileOpcode>(codeBlock);
}
bool canInlineOpcodes(CodeBlock* codeBlock)
{
return canHandleOpcodes<canInlineOpcode>(codeBlock);
}
#endif
} } // namespace JSC::DFG
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