Re: [PATCH, testsuite] Fix for PR47440 - Use LCM for vzeroupper insertion

[Steven Bosscher]

>        * a/gcc/gcse.c (alloc_gcse_mem): Added code to run in PRE2.

And this is necessary because...???

Why not just make it a separate pass in ix86-reorg that uses LCM? Look
at mode switching for an example.

Ciao!
Steven