[Bug tree-optimization/23940] SSA_NAMEs are not released after no longer being used.

[amacleod at redhat dot com]

------- Additional Comments From amacleod at redhat dot com  2005-09-19 15:59 -------
I don't understand.  Exactly what mess did I make?

We also probably have to set SSA_NAME_DEF_STMT to NULL in bsi_remove in order to
be sure that an SSA name with no uses isn't actually associated with a stmt any
more (you can have valid defs with no uses). It is set when the SSA_NAME is
created, but I don't think that field ever gets cleared anywhere else.

 

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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23940