Use asm style type names and improve asm typer.

src/typing-asm.h

Index: src/typing-asm.h
diff --git a/src/typing-asm.h b/src/typing-asm.h
index a80fec5fbabaa45b56c2f1f823a0b6665b020465..33734692a8ec3db116154b1a9a59444d4edf1550 100644
--- a/src/typing-asm.h
+++ b/src/typing-asm.h
@@ -65,7 +65,7 @@ class AsmTyper : public AstVisitor {
   void VisitDeclarations(ZoneList<Declaration*>* d) override;
   void VisitStatements(ZoneList<Statement*>* s) override;
 
-  void VisitExpressionAnnotation(Expression* e);
+  void VisitExpressionAnnotation(Expression* e, bool is_return);
   void VisitFunctionAnnotation(FunctionLiteral* f);
   void VisitAsmModule(FunctionLiteral* f);
 
@@ -84,6 +84,8 @@ class AsmTyper : public AstVisitor {
   void VisitWithExpectation(Expression* expr, Type* expected_type,
                             const char* msg);
 
+  void VisitLiteral(Literal* expr, bool is_return);
+
   void VisitIntegerBitwiseOperator(BinaryOperation* expr, Type* left_expected,
                                    Type* right_expected, Type* result_type,
                                    bool conversion);