[Bug tree-optimization/66396] [6 regression] FAIL: gcc.dg/graphite/run-id-pr47593.c execution test

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66396

--- Comment #7 from Richard Biener <rguenth at gcc dot gnu.org> ---
The code in SESE doesn't deal with virtual operands correctly.  In other places
GRAPHITE tries to paper over this with marking all vops for renaming.  But
that isn't done when no code is generated, thus this breaks.