[Bug rtl-optimization/93105] [8/9/10 Regression] Wrong optimization for pointers: provenance of `p + (q1 - q2)` is treated as `q` when the provenance of `p` is unknown

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=93105

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |RESOLVED
         Depends on|                            |49330
         Resolution|---                         |DUPLICATE

--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
It's actually the same as PR49330.  One of the reasons I've not even tried to
do major surgery on GIMPLE is that we can't seem to agree on a course of action
on the RTL blunder called find_base_term and base_alias_check which makes any
"fixing" on the GIMPLE side pointless.

*** This bug has been marked as a duplicate of bug 49330 ***


Referenced Bugs:

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=49330
[Bug 49330] Integer arithmetic on addresses optimised with pointer arithmetic
rules