}
+void FullCodeGenerator::EmitIsJSProxy(CallRuntime* expr) {
+ ZoneList<Expression*>* args = expr->arguments();
+ DCHECK(args->length() == 1);
+
+ VisitForAccumulatorValue(args->at(0));
+
+ Label materialize_true, materialize_false;
+ Label* if_true = NULL;
+ Label* if_false = NULL;
+ Label* fall_through = NULL;
+ context()->PrepareTest(&materialize_true, &materialize_false, &if_true,
+ &if_false, &fall_through);
+
+ __ JumpIfSmi(eax, if_false);
+ Register map = ebx;
+ __ mov(map, FieldOperand(eax, HeapObject::kMapOffset));
+ __ CmpInstanceType(map, FIRST_JS_PROXY_TYPE);
+ __ j(less, if_false);
+ __ CmpInstanceType(map, LAST_JS_PROXY_TYPE);
+ PrepareForBailoutBeforeSplit(expr, true, if_true, if_false);
+ Split(less_equal, if_true, if_false, fall_through);
+
+ context()->Plug(if_true, if_false);
+}
+
void FullCodeGenerator::EmitIsConstructCall(CallRuntime* expr) {
DCHECK(expr->arguments()->length() == 0);