[PATCH] [x86] make reciprocal estimate code generation more flexible

hfinkel at anl.gov hfinkel at anl.gov
Sat Apr 11 18:30:06 PDT 2015


In http://reviews.llvm.org/D8982#155207, @spatel wrote:

> Hi Hal -
>
> Thanks for the quick feedback. I'm looking at the PPC variations that gcc supports. I'm thinking that we'll need an enum with bitmasks to cover all the potential variations. Just making sure that I'm not going into the weeds...


I think that sounds right.

> Also (if maintaining compatibility with gcc is a goal), we'll still need to accept and process different flags per arch.


Not exactly in that sense. If we accept a superset of the options that gcc supports because we apply them to targets/variants that gcc does not, that's fine. This seems pretty target independent, and I'd rather handle it in a uniform way if possible.


http://reviews.llvm.org/D8982

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