Resubmit/ping: peephole2 vs cond-exec vs df

[Andrew Pinski]

On Tue, Jun 29, 2010 at 5:41 PM, Andrew Pinski <pinskia@gmail.com> wrote:
> On Tue, Jun 29, 2010 at 6:22 AM, Bernd Schmidt <bernds@codesourcery.com> wrote:
>> No, those parts of the buffer that weren't part of the match remain
>> unaffected, we keep both the insns and their life information.  We only
>> rebuild life for the new insns produced by the match.
>>
>> Here's a new version with a few more comments and a few remnants of old
>> code removed.  I've also removed some dead code found in genrecog.c (got
>> sidetracked today into debugging the current peephole2 code again...);
>> this was left in after your r34208 patch.
>
> I think this causes a bootstrap failure on x86_64-linux-gnu:
> /home/apinski/src/gcc-fsf/local//gcc/gcc/coverage.c:151:1: error:
> unrecognizable insn:
> (insn 25 7 26 2
> /home/apinski/src/gcc-fsf/local//gcc/gcc/coverage.c:150 (set (reg:DI 1
> dx)
>        (mem/s:SI (plus:DI (reg/v/f:DI 5 di [orig:64 of ] [64])
>                (const_int 4 [0x4])) [15 entry_2->ctr+0 S4 A32])) -1 (nil))
> /home/apinski/src/gcc-fsf/local//gcc/gcc/coverage.c:151:1: internal
> compiler error: in extract_insn, at recog.c:2127

+  [(match_scratch:SI 5 "r")

I think the :SI part is incorrect, we need a DI mode on x86_64 rather
than a SImode.

Thanks,
Andrew Pinski