[Bug tree-optimization/87785] [9 Regression] ICE in dr_misalignment, at tree-vectorizer.h:1245 on 454.calculix with -Ofast and -flto

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87785

--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> ---
With the right set of caching/failing events we miss loads for
slp_instance->loads.  I have a patch gathering loads after the fact which fixes
the issue but I don't have a nice testcase.