[Bug middle-end/106892] [11/12/13 Regression] Wrong code at -O3 on x86_64-linux-gnu since r11-963-g80d6f89e78fc3b77

[rguenth at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106892

--- Comment #10 from Richard Biener <rguenth at gcc dot gnu.org> ---
So it's aready dataref analysis that tears apart the constant offset for
dr.innermost, here as

DR_BASE_ADDRESS &f
DR_OFFSET (ssizetype) ((sizetype) prephitmp_80 * 18446744073709551612)
DR_INIT 16

but ref_at_iteration associates that in an invalid way.

I'm testing a patch.