Re: [PATCH] PR tee-optimization/109564 - Do not ignore UNDEFINED ranges when determining PHI equivalences.

[Richard Biener via Gcc-patches]

> Am 20.04.2023 um 19:22 schrieb Andrew MacLeod <amacl...@redhat.com>:
> 
> This removes specal casing UNDEFINED ranges when we are checking to see if 
> all arguments are the same and registering an equivalence.
> 
> previously if there were 2 different names, and one was undefined, we ignored 
> it an created an equivaence with the other one.  as observed, this is not a 2 
> way relationship, and as such, we souldnt do it this way.   This removes the 
> bypass for undefined ranges in chekcing if arguments are the same symbol.
> 
> Bootstrapped/regtested successfully on x86_64-linux and i686-linux.  OK for 
> trunk?

LGTM

Richard.

> Andrew
> 
> 
> <564.patch>