https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113268
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Ever confirmed|0 |1
Keywords| |missed-optimization
Status|UNCONFIRMED |NEW
Last reconfirmed| |2024-01-09
--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
(i + 1) * CST and i * CST + 1 * CST can have different overflow behavior,
so (i + 1) * CST cannot be turned into i * CST + CST unconditionally.
The reverse transform would be valid through I think.
RTL or GIMPLE with -fwrapv should be able to handle both the same. There's
still the old idea of making late GIMPLE effectively -fwrapv, the same as RTL
behaves.
