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1. reduce size of ByteCodeBlock, CodeBlock classes

Browse source 
2. optimize function calling performance
 - change local variable binding order (this, function name first)
 - revise opcode table init method
3. remove OpcodeTable::m_reverseTable
4. use shared thrower JSGetterSetter instance for arguments, function object
5. revise Function.prototype.toString for to print function's source

Signed-off-by: seonghyun kim <sh8281.kim@samsung.com>
This commit is contained in:
seonghyun kim 2017-03-15 15:05:19 +09:00
commit b1cc608191
29 changed files with 378 additions and 359 deletions
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17
src/parser/Script.cpp
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@ -33,13 +33,12 @@ namespace Escargot {
Value Script::execute(ExecutionState& state, bool isEvalMode, bool needNewEnv, bool isOnGlobal)
{
Node* programNode = m_topCodeBlock->cachedASTNode();
m_topCodeBlock->m_cachedASTNode = nullptr;
ASSERT(programNode && programNode->type() == ASTNodeType::Program);
ByteCodeGenerator g;
m_topCodeBlock->m_byteCodeBlock = g.generateByteCode(state.context(), m_topCodeBlock, programNode, ((ProgramNode*)programNode)->scopeContext(), isEvalMode, isOnGlobal);
delete m_topCodeBlock->m_cachedASTNode;
m_topCodeBlock->m_cachedASTNode = nullptr;
delete programNode;
LexicalEnvironment* env;
ExecutionContext* prevEc;
@ -72,8 +71,9 @@ Value Script::execute(ExecutionState& state, bool isEvalMode, bool needNewEnv, b
literalStorage[i] = src[i];
}
size_t unused;
Value resultValue = ByteCodeInterpreter::interpret(newState, m_topCodeBlock->byteCodeBlock(), 0, registerFile, &unused);
clearStack<512>();
Value resultValue = ByteCodeInterpreter::interpret(newState, m_topCodeBlock->byteCodeBlock(), 0, registerFile);
return resultValue;
}
@ -107,6 +107,7 @@ Value Script::executeLocal(ExecutionState& state, Value thisValue, CodeBlock* pa
{
Node* programNode = m_topCodeBlock->cachedASTNode();
ASSERT(programNode && programNode->type() == ASTNodeType::Program);
m_topCodeBlock->m_cachedASTNode = nullptr;
bool isOnGlobal = true;
FunctionEnvironmentRecord* fnRecord;
@ -125,8 +126,7 @@ Value Script::executeLocal(ExecutionState& state, Value thisValue, CodeBlock* pa
ByteCodeGenerator g;
m_topCodeBlock->m_byteCodeBlock = g.generateByteCode(state.context(), m_topCodeBlock, programNode, ((ProgramNode*)programNode)->scopeContext(), isEvalMode, isOnGlobal);
delete m_topCodeBlock->m_cachedASTNode;
m_topCodeBlock->m_cachedASTNode = nullptr;
delete programNode;
EnvironmentRecord* record;
if (UNLIKELY(needNewRecord)) {
@ -162,7 +162,7 @@ Value Script::executeLocal(ExecutionState& state, Value thisValue, CodeBlock* pa
literalStorage[i] = src[i];
}
stackStorage[m_topCodeBlock->thisSymbolIndex()] = thisValue;
stackStorage[0] = thisValue;
if (!isOnGlobal && m_topCodeBlock->usesArgumentsObject()) {
AtomicString arguments = state.context()->staticStrings().arguments;
@ -171,8 +171,9 @@ Value Script::executeLocal(ExecutionState& state, Value thisValue, CodeBlock* pa
}
}
size_t unused;
Value resultValue = ByteCodeInterpreter::interpret(newState, m_topCodeBlock->byteCodeBlock(), 0, registerFile, &unused);
clearStack<512>();
Value resultValue = ByteCodeInterpreter::interpret(newState, m_topCodeBlock->byteCodeBlock(), 0, registerFile);
return resultValue;
}