[RFC] patch to fix an ICE involving sign-extract of mmx expression

[Fariborz Jahanian]

On Sep 23, 2005, at 12:41 PM, Richard Henderson wrote:

> On Thu, Sep 22, 2005 at 01:21:06PM -0700, Fariborz Jahanian wrote:
>
>>                   /* Avoid creating invalid subregs, for example when
>>                      simplifying (x>>32)&255.  */
>> !                 if (final_word >= GET_MODE_SIZE (inner_mode)
>> !                     || (final_word % GET_MODE_SIZE (tmode)) != 0)
>>                     return NULL_RTX;
>>
>
> I think you should just call validate_subreg.  Ok with that change.

This is the patch I am checking in.

- fariborz (fjahanian@apple.com)

ChangeLog:

2005-09-26    Fariborz Jahanian <fjahanian@apple.com>

         * combine.c (make_extraction): Check for valid use of subreg.

-------------- next part --------------
An embedded and charset-unspecified text was scrubbed...
Name: patch-fsf.txt
URL: <https://gcc.gnu.org/pipermail/gcc/attachments/20050926/110d3247/attachment.txt>
-------------- next part --------------


>
>
> r~
>