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[Bug gas/25550] Review .arch directives

From: hjl.tools at gmail dot com
Subject: [Bug gas/25550] Review .arch directives
Date: Tue, 18 Feb 2020 16:59:25 +0000


--- Comment #12 from H.J. Lu <hjl.tools at gmail dot com> ---
(In reply to Jan Beulich from comment #11)
> (In reply to H.J. Lu from comment #10)
> > We need a directive for SSE instructions without MMX registers.
> > We can give it a different name, something like pure-SSE.
> But what practical use would such an option be? You said yourself that
> anything that can engage MMX state in the CPU also is liable to want/need
> access to EMMS (or FEMMS), which won't be accessible with just SSE insns
> permitted.

I want assembler to enforce assembly codes without any access to MMX state.

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