[llvm-bugs] [Bug 35869] _mm_setzero_si64 violates the spec by generating xorps instead of pxor

[via llvm-bugs]

https://bugs.llvm.org/show_bug.cgi?id=35869

Gonzalo BG <gonzalobg88 at gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         Resolution|---                         |INVALID
             Status|NEW                         |RESOLVED

--- Comment #5 from Gonzalo BG <gonzalobg88 at gmail.com> ---
> Okay... so that function requests a zero value in an SSE register.

Oh. I screwed up, I thought that `__m64` was always going to be an MMX
register. What is happening in this case? Is the calling convention requiring
it to be turned into an SSE register?

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