// optimize them.
add_flag(kDontInline);
} else if (node->function()->intrinsic_type == Runtime::INLINE &&
- (node->raw_name()->IsOneByteEqualTo("_ArgumentsLength") ||
- node->raw_name()->IsOneByteEqualTo("_Arguments"))) {
- // Don't inline the %_ArgumentsLength or %_Arguments because their
- // implementation will not work. There is no stack frame to get them
- // from.
+ node->raw_name()->IsOneByteEqualTo("_Arguments")) {
+ // Don't inline the %_Arguments because it's implementation will not work.
+ // There is no stack frame to get them from.
add_flag(kDontInline);
}
}
// Support for arguments.length and arguments[?].
void HOptimizedGraphBuilder::GenerateArgumentsLength(CallRuntime* call) {
- // Our implementation of arguments (based on this stack frame or an
- // adapter below it) does not work for inlined functions. This runtime
- // function is blacklisted by AstNode::IsInlineable.
- ASSERT(function_state()->outer() == NULL);
ASSERT(call->arguments()->length() == 0);
- HInstruction* elements = Add<HArgumentsElements>(false);
- HArgumentsLength* result = New<HArgumentsLength>(elements);
+ HInstruction* result = NULL;
+ if (function_state()->outer() == NULL) {
+ HInstruction* elements = Add<HArgumentsElements>(false);
+ result = New<HArgumentsLength>(elements);
+ } else {
+ // Number of arguments without receiver.
+ int argument_count = environment()->
+ arguments_environment()->parameter_count() - 1;
+ result = New<HConstant>(argument_count);
+ }
return ast_context()->ReturnInstruction(result, call->id());
}