cond语句的处理

src/SysYIRGenerator.cpp

@@ -256,10 +256,6 @@ namespace sysy
     return call;
   }
 
-  any SysYIRGenerator::visitCondExp(SysYParser::ExpContext *ctx)
-  {
-  }
-
   any SysYIRGenerator::visitIfStmt(SysYParser::IfStmtContext *ctx)
   {
     // generate condition expression

src/SysYIRGenerator.h

@@ -246,7 +246,7 @@ namespace sysy
       return visitChildren(ctx);
     }
     virtual std::any
-    visitCondExp(SysYParser::ExpContext *ctx) override;
+    visitCondExp(SysYParser::ExpContext *ctx) { return visitChildren(ctx); }
 
   private:
     std::any visitGlobalDecl(SysYParser::DeclContext *ctx);