[OpenACC 3/11] new target hook

[Nathan Sidwell]

On 10/22/15 01:15, Jakub Jelinek wrote:
> On Wed, Oct 21, 2015 at 03:13:26PM -0400, Nathan Sidwell wrote:
>> 2015-10-20  Nathan Sidwell  <nathan@codesourcery.com>
>>
>> 	* target.def (fork_join): New GOACC hook.
>> 	* targhooks.h (default_goacc_fork_join): Declare.
>> 	* omp-low.c (default_goacc_forkjoin): New.
>> 	* doc/tm.texi.in (TARGET_GOACC_FORK_JOIN): Add.
>> 	* doc/tm.texi: Regenerate.
>> 	* config/nvptx/nvptx.c (nvptx_xform_fork_join): New.
>> 	(TARGET_GOACC_FOR_JOIN): Override.

this is  what I've committed.  Other than nits, the changes are
1) use targetm.have_... rather than #ifdef HAVE_...

2) don't include the nvptx hunk.  I'll apply that with the  nvptx bits to turn 
all this stuff on.

nathan

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