SSE/x86_64 fix

[Jan Hubicka]

> On Fri, 5 Jan 2001, Alan Modra wrote:
> 
> > You can probably fix this problem with the following.
> > 
> > {"lfence",    0, 0x0fae, 0xe8, CpuP4, FP|ImmExt,	{ 0, 0, 0 } },
> > {"mfence",    0, 0x0fae, 0xf0, CpuP4, FP|ImmExt,	{ 0, 0, 0 } },
> > 
> > If this works (please check it, I haven't!), the patch is OK to commit
> > (with spelling fix for `either')
> 
> Following up, again.  "sfence" needs fixing similarly too.
I've checked it and it works.  So I am going to install the patch.

Thanks!

Honza
> 
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