[Bug target/107304] internal compiler error: in convert_move, at expr.cc:220 with -march=tigerlake

[hjl.tools at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=107304

--- Comment #12 from H.J. Lu <hjl.tools at gmail dot com> ---
(In reply to Hongyu Wang from comment #10)
> 
> Clang works properly as it overrides -march= to any target clones. I suppose
> we can do similar things in ix86_valid_target_attribute_p

That will be wrong since target attribute can be used to disable vector
instructions.