Minor improvement to double-word register allocations

[Jeff Law]

On 05/21/10 08:52, Vladimir N. Makarov wrote:
> On 05/21/2010 09:34 AM, Jeff Law wrote:
>> On 05/20/10 21:38, Hans-Peter Nilsson wrote:
>>> On Thu, 20 May 2010, Jeff Law wrote:
>>>> I've been using this patch for about 6 months on the reload-v2 branch
>>>> (including bootstrapping x86 rather than x86_64 for a while) -- I also
>>>> bootstrapped and regression tested the patch using the mainline 
>>>> sources on
>>>> x86_64-unknown-linux-gnu.
>>>>
>>>> Approved and installed.
>>> See<http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44224>  for
>>> resulting carnage.
>> Strange.  I'll take care of it today or revert as necessary.
>>
> Jeff, I am going to look at this too.
I just fired up a sh4 build.  Reports are it also fails on cris-elf and 
ia64...

Jeff