https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104947
Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Ever confirmed|0 |1
Status|UNCONFIRMED |NEW
Last reconfirmed| |2022-03-16
Target Milestone|--- |9.5
Summary|ICE: SSA corruption (Unable |[9/10/11/12 Regression]
|to coalesce ssa_names 5 and |ICE: SSA corruption (Unable
|11 which are marked as MUST |to coalesce ssa_names 5 and
|COALESCE.) |11 which are marked as MUST
| |COALESCE.)
--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Note in 4.9.4, ccp1 is able to remove the dead statement:
Removing dead stmt x_9 = x_8(D)(ab) + 1;
Which allowed the coalescing to happen.
