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Re: PATCH: PR rtl-optimization/47502: Never combine asm statement
On 03/18/2011 01:56 PM, H.J. Lu wrote:
> On Fri, Mar 18, 2011 at 12:51 PM, Eric Botcazou <ebotcazou@adacore.com> wrote:
>>> Is this patch OK for trunk?
>>
>> This has always worked for the other ports AFAIK so I don't think we should
>> disable it without evaluating the impact on them. If reload has so many
>> problems with x32, maybe more fundamental changes should be made to the x86
>> back-end to support it.
>>
>
> X32 port exposed many issues in GCC middle-end and RTL optimizations.
> The other ports never generate such asm statements combine has to deal with.
> Do you have any suggestions how to fix it in backend?
How about analyzing the problem properly?
All you posted was a patch, with no explanation of how the problem occurred.
Without that, no one can say whether this is the x32 port really tickling a
latent bug in the compiler, or whether it's a bug in your port.
r~