[Bug target/104704] [12 Regression] ix86_gen_scratch_sse_rtx doesn't work with explicit XMM7/XMM15/XMM31 usage

[hjl.tools at gmail dot com via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104704

--- Comment #4 from H.J. Lu <hjl.tools at gmail dot com> ---
(In reply to Hongtao.liu from comment #3)
> (In reply to H.J. Lu from comment #1)
> > ix86_expand_vector_move shouldn't use ix86_gen_scratch_sse_rtx.
> 
> Is it problematic for TARGET_GEN_MEMSET_SCRATCH_RTX?

It is OK as long as it is used only by memset expander.