[Bug tree-optimization/18587] build_v_may_defs and build_vuses should be hastables instead of varray

[amacleod at redhat dot com]

------- Additional Comments From amacleod at redhat dot com  2004-11-22 17:39 -------
90% of what? the time spent in alias analysis?  how long is the average operand
list we are looking up then? is it because the lists are long, or is it because
there are a bazillion lookups? 

If the lists are longish, then we have a good argument for introducing sorted by
DECL_UID operand lists that have been discussed at various times in the past. 
The lookup time can be decreased significantly.



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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18587