Re: [RFC][PATCH LRA] WIP patch to fix one part of PR87507

[Jeff Law <law@redhat.com>]

On 10/19/18 4:39 PM, Peter Bergner wrote:
> On 10/19/18 4:16 PM, Peter Bergner wrote:
>> Thoughts?  I'll note that this does not fix the S390 bugs, since those seem
>> to be due to problems with early clobber operands and "matching" constraint
>> operands.  I'm still working on that and hope to have something soon.
> [snip]
>> 	* lra-constraints.c (process_alt_operands): Abort on illegal hard
>> 	register usage.  Prefer reloading non hard register operands.
> 
> I stand corrected.  Using this patch, plus Segher's combine patch, I am
> able to bootstrap s390x-linux.  I'm running the test suite to see whether
> that looks clean as well.  Maybe those s390 issues were related to combine
> pushing hard regs into patterns and we just weren't handling them well?
> 
> Jeff, maybe once Segher commits his patch, can you give this patch a try
> on your testers?
Once committed to the trunk it's automatically picked up :-)  In fact,
commits to the trunk are triggers, though in reality there's *always*
something changing from one day to the next in the various relevant
repos (gcc, binutils, linux kernel, glibc & newlib).

It's only testing patches that aren't on the trunk that require manual
intervention.

jeff