[Bug rtl-optimization/19097] [3.4/4.0/4.1 regression] Quadratic behavior with many sets for the same register in gcse CPROP

[phython at gcc dot gnu dot org]

------- Additional Comments From phython at gcc dot gnu dot org  2005-06-08 03:32 -------
 The problem with the hash table seems to be fixed in gcc 4.1, but not gcc 3.4
or 4.0.  In gcc 4.1 hash_rtx is used for the implicit sets instead of the really
dumb hash_set.

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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=19097