[Bug target/89071] AVX vcvtsd2ss lets us avoid PXOR dependency breaking for scalar float<->double and other scalar xmm,xmm instructions

[ubizjak at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89071

Uroš Bizjak <ubizjak at gmail dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|ASSIGNED                    |RESOLVED
         Resolution|---                         |FIXED

--- Comment #20 from Uroš Bizjak <ubizjak at gmail dot com> ---
(In reply to H.J. Lu from comment #19)

> > Do we need XOR for cvtsd2ss mem->xmm?
> 
> Yes, we do since
> 
>      vcvtss2sd f(%rip), %xmm0, %xmm0
> 
> partially updates %xmm0.

This is part of PR 87007, so let's call this PR FIXED.