RFA[powerpc]: patch to fix PR79916

[Segher Boessenkool]

Hi!

On Fri, Apr 13, 2018 at 04:43:02PM -0400, Vladimir Makarov wrote:
> On 04/13/2018 03:58 PM, Alexander Monakov wrote:
> >Here's another compact variant:
> >
> >  	  regno = reg_renumber[regno];
> >  	  if (regno < 0)
> >  	    regno = cl == NO_REGS ? -1 : ira_class_hard_regs[cl][1];
> >
> Thanks, Alexander.  I like your variant more.

Me too :-)

> --- testsuite/gcc.target/powerpc/pr79916.c	(nonexistent)
> +++ testsuite/gcc.target/powerpc/pr79916.c	(working copy)
> @@ -0,0 +1,556 @@
> +/* { dg-do compile  { target { powerpc64le-*-* } } } */

Is the testcase specific to LE?  If not, please use powerpc*-*-*, or
powerpc*-*-* && lp64  if it needs 64-bit.

> +/* { dg-options "-Idfp -fno-expensive-optimizations --param ira-max-conflict-table-size=0 -mno-popcntd -O3" } */

I think you can drop the -Idfp ?  If that option would do anything we
have bigger problems ;-)

Looks fine to me otherwise.  Thanks for working on this!


Segher