[PATCH] x86 NaCl: Emit LAHF/SAHF instead of PUSHF/POPF

[JF Bastien]

In http://reviews.llvm.org/D6629#101179, @t.p.northover wrote:

> In my second attempt to make an intelligent comment here...
>
> Doesn't this neglect the overflow flag?


Eek you're totally right... I updated the patch, and if you thought the first one was horrible you'll find this one even better!


http://reviews.llvm.org/D6629

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