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Re: 4.5 backport request...
On Thu, Mar 10, 2011 at 10:07 PM, DJ Delorie <dj@redhat.com> wrote:
>
>> This doesn't look like a regression fix. ?The changelog doesn't tell
>> if it is mere replacing macros by hooks, so please also attach the
>> patch.
>
> The original patch is here:
>
> http://gcc.gnu.org/ml/gcc/2010-10/msg00076.html
>
> It would need editing for 4.5, which I'll do if there's a good chance
> the change will be accepted into 4.5.
>
> It's just replacing macros with hooks. ?The macros do not pass enough
> information to the backend to do insn-specific alignments, which the
> RX needs for optimal performance. ?The hooks have an additional
> argument, which is the insn which will be aligned.
>
> On the RX, you pay a one cycle penalty if you branch to an insn which
> spans a fetch line.
I don't think this is suitable for the branch. Any reason why you can't work
on the trunk?
Richard.