[Bug middle-end/19721] [meta-bug] optimizations that CSE still catches

[bonzini at gcc dot gnu dot org]

------- Additional Comments From bonzini at gcc dot gnu dot org  2005-04-26 17:35 -------
Another thing that CSE does is promoting paradoxical subregs to regs.  On
PowerPC at least, recursive calls of fold_rtx are almost ineffective except for
this.  Such promotion helps because equiv_constant does not look into subregs.

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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=19721