[Bug target/66866] [miscompile] incorrect load address on manual vector shuffle

[ubizjak at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66866

--- Comment #7 from Uroš Bizjak <ubizjak at gmail dot com> ---
(In reply to Uroš Bizjak from comment #6)
> (In reply to Richard Biener from comment #5)
> > "Safe" fix:
> 
> No, no... pextr to a temporary should be used here.
> 
> I plan to introduce pextr handling to "insv<mode>" pattern. Then,

... "extzv<mode>" pattern.