Merge pull request #70602 from ApolloZhu/macro/expression-as-default-argument

[Macros] Expression macro as caller-side default argument

lib/SILGen/SILGenFunction.cpp

@@ -344,6 +344,7 @@ static MacroInfo getMacroInfo(GeneratedSourceInfo &Info,
   }
   case GeneratedSourceInfo::PrettyPrinted:
   case GeneratedSourceInfo::ReplacedFunctionBody:
+  case GeneratedSourceInfo::DefaultArgument:
     break;
   }
   return Result;