[Bug tree-optimization/118232] [12/13/14/15 regression] wrong union member size identification in -Os optimization, starting from gcc 11 till current

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=118232

Richard Biener <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
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           Priority|P3                          |P2

--- Comment #4 from Richard Biener <rguenth at gcc dot gnu.org> ---
It's going to be difficult to prevent.  At some point I considered making FRE
dumb down addresses it CSEs to &base + offset.  The late diagnostics are too
late here.