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

[pinskia at gcc dot gnu dot org]

------- Additional Comments From pinskia at gcc dot gnu dot org  2004-11-22 23:49 -------
Oh, this has nothing to do with tree aliasing analysis at all but:
 tree operand scan     :  26.65 ( 7%) usr   3.78 (10%) sys  31.64 ( 6%) wall

With a hash table for these two we get:
 tree operand scan     :  14.89 ( 9%) usr   2.57 (11%) sys  17.61 ( 8%) wall

(alias analysis also goes down too):
 tree alias analysis   :  22.82 (14%) usr   0.16 ( 1%) sys  31.26 (13%) wall


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