Parser.parseAsmPrimaryExp

Parses an AsmPrimaryExp

$(GRAMMAR $(RULEDEF asmPrimaryExp): $(LITERAL IntegerLiteral) | $(LITERAL FloatLiteral) | $(LITERAL StringLiteral) | $(RULE register) | $(RULE register : AsmExp) | $(RULE identifierChain) | $(LITERAL '$') | $(LITERAL 'this') | $(LITERAL '__LOCAL_SIZE') ;)