RFA: fix PR90553, IRA assigning a call-clobbered reg to call with post-increment

[Hans-Peter Nilsson]

> From: Vladimir Makarov <vmakarov@redhat.com>
> Date: Tue, 21 May 2019 17:05:50 -0400

> Yes, the patch is ok to commit.  Thank you for working on the problem.
> 
> It is hard to reproduce the same problem in LRA as LRA mostly follows 
> IRA decisions.
> 
> I'll probably do the analogous patch for LRA on this week.

Thanks!

> > gcc:
> > 	* lra-lives.c (process_bb_node_lives): Consider defs
> It should be ira-lives.c here.
> > 	for a call insn to be die before the call, not after.

I also missed the "PR middle-end/90553" heading above and
misspelled the GNU spacing at the end of the moved and expanded
comment.  Fixed before the commit.  Thanks.

brgds, H-P