[PATCH] Improve -Ofast vectorization of std::sin etc. (PR libstdc++/81706)

[Joseph Myers]

On Fri, 29 Sep 2017, Jakub Jelinek wrote:

> Here is a patch which does that.  Also bootstrapped/regtested on
> x86_64-linux and i686-linux, ok for trunk?

> 	* c-decl.c (merge_decls): Copy "omp declare simd" attributes from
> 	newdecl to corresponding __builtin_ if any.

The C front-end changes are OK.

-- 
Joseph S. Myers
joseph@codesourcery.com