[cfe-dev] Question on __attribute__((vector_size)) and templates

Alexey Frolov alexfrolov1878 at yandex.ru
Thu Jun 18 05:35:26 PDT 2015

Hi Richard, Aaron,

I have a question regarding issue described in http://llvm.org/PR15730 and http://llvm.org/PR16986.
In comment 1 of PR16986 Richard said:
  >> We should generalize the handling of dependent expressions from the alignment attributes to deal with this case too.
As far as I know, alignment attributes only appertain to variables or typedefs (which both have AST nodes). I don't think we can generalize this approach for vector_size attribute as it appertains to types (which do not have AST nodes).

What about creating a new property for VectorType that would state that this vector type is dependent (dependent vector types are vector types with dependent base types and/or dependent size expressions)? It seems to be somewhat more appropriate to me.
This will be somewhat similat to the way ExtVectorType and DependentSizedExtVectorType are treated.

What do you think?

Thank you,
Alexey Frolov
Software Engineer
Intel Compiler Team

More information about the cfe-dev mailing list