Vectorization of strided access and bootstrap failure problem

[François-Xavier Coudert]

> However, with current mainline, and with this patch bootstrap *with
> vectorization enabled* fails on x86. It seems to me that this is the same
> failure we've had for a while on mainline on ppc-linux, as reported in
> pr28752, which has nothing to do with this patch (probably just exposed by
> it).
>
> I'm thinking, if no objection (within, say, 48 hours), to commit the patch
> despite the above, while I continue to try to track down the cause of the
> bootstrap failure with vectorization enabled.

Did your regular bootstrap (i.e. without vectorization) include
Fortran? If not, then I would like to suggest you bootstrap with
Fortran enabled, because the Fortran runtime library (libgfortran)
compiles a few files with vectorization. We've had a few regressions
due to that already, and we could do without another.

Thanks,
FX