https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103359
Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Ever confirmed|0 |1
Status|UNCONFIRMED |NEW
Last reconfirmed| |2021-11-22
Keywords| |missed-optimization
Target Milestone|--- |12.0
--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Confirmed.
In CCP1 on the trunk:
Visiting statement:
f_18 = (short intD.25) _6;
which is likely CONSTANT
Lattice value changed to CONSTANT 0x4 (0x1). Adding SSA edges to worklist.
In ccp1 on the trunk with -fno-tree-bit-ccp:
Visiting statement:
f_18 = (short intD.25) _6;
which is likely CONSTANT
Applying pattern match.pd:3663, gimple-match.c:42920
Applying pattern match.pd:3580, gimple-match.c:42859
Match-and-simplified (short int) _6 to _5
Lattice value changed to CONSTANT _5. Adding SSA edges to worklist.
marking stmt to be not simulated again
So ccp1 sometimes applies match and simplify and sometimes does not ....
