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Re: [patch i386 4.4/trunk]: Fix sse restore for x86_64 in case of !sp_valid
2009/9/21 Jan Hubicka <hubicka@ucw.cz>:
>> Hello,
>>
>> In ix86_expand_epilogue for sp_valid == 0 are the xmm register
>> restored ?incorrectly. This leads to possible clobbered xmm register
>> on unwind. This issue could be related to the AVX fail, too.
>
> I must say I fail to see how 4.4 version can make difference. ?If
> padding0 is nonzero, nsse_regs is too, so I see it is redundant testing
> it, but it also should not hurt?
>
> Honza
>
padding0 can be != 0, if there are standard registers saved (or none
needs to be saved), as it aligns to always to 16 bytes.
Cheers,
Kai
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