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Don't use heap allocated lexical environment if possible (#378)

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- We should not heap allocated env on...
  * functions uses variable on upper function
  * functions have `typeof` operation
  * functions have unmapped arguments object
- Improve calling function performance by remove accessing vtable once in interpreter(from isCallable, call to just call)

Signed-off-by: seonghyun kim <sh8281.kim@samsung.com>
This commit is contained in:
Patrick Kim 2019-08-20 10:41:06 +09:00 • committed by Hyukwoo Park
commit 3c0a1cfddd
23 changed files with 297 additions and 65 deletions
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3
src/runtime/ScriptFunctionObject.cpp
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@ -148,6 +148,9 @@ public:
Object* ScriptFunctionObject::construct(ExecutionState& state, const size_t argc, NULLABLE Value* argv, Object* newTarget)
{
if (UNLIKELY(!newTarget->isConstructor())) {
ErrorObject::throwBuiltinError(state, ErrorObject::TypeError, errorMessage_Not_Constructor_Function, codeBlock()->functionName());
}
// Assert: Type(newTarget) is Object.
ASSERT(newTarget->isObject());
ASSERT(newTarget->isConstructor());