[Bug target/80210] ICE in in extract_insn, at recog.c:2311 on ppc64 for with __builtin_pow

[meissner at linux dot vnet.ibm.com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80210

--- Comment #5 from Michael Meissner <meissner at linux dot vnet.ibm.com> ---
On Fri, Apr 14, 2017 at 07:26:57PM +0000, bergner at gcc dot gnu.org wrote:
> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80210
> 
> --- Comment #4 from Peter Bergner <bergner at gcc dot gnu.org> ---
> So it seems rs6000_pragma_target_parse() ends up calling
> rs6000_option_override_internal(), which is modifying the options via global
> variables.  All other arches pass in the option variables to their
> *__option_override_internal(), that they want updated/set and those seem to be
> scoped to the area of the file they reside in.

If that is the case, then we need to modify the code not to touch the global
variables.