[Bug other/50582] Instruct GCC that added_clobbers_hard_reg_p shouldn't consider a specific register

[egallager at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=50582

Eric Gallager <egallager at gcc dot gnu.org> changed:

           What    |Removed                     |Added
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                 CC|                            |egallager at gcc dot gnu.org

--- Comment #4 from Eric Gallager <egallager at gcc dot gnu.org> ---
(In reply to Paulo J. Matos from comment #2)
> Created attachment 25389 [details]
> Patch for GCC 4.6.1 implementing suggested enhancement

(In reply to Paulo J. Matos from comment #3)
> Created attachment 25420 [details]
> Allows reload to remove trivial insn
> 
> I noticed that reload was failing to remove insn of the form:
> (parallel [(set rX rX) (clobber RCC)])
> 
> Attached is a patch that does this. Removes move instructions whose clobber,
> clobbers registers defined in NOT_REALLY_HARD_REG.

Do these patches still apply against trunk? If so, please submit to gcc-patches
for review.