[Bug tree-optimization/23821] [4.0/4.1/4.2/4.3 Regression] DOM and VRP creating harder to optimize code

[rguenth at gcc dot gnu dot org]

------- Comment #15 from rguenth at gcc dot gnu dot org  2008-01-12 10:49 
-------
I think symbolic substitutions should be only done if the resulting stmt can
be simplified to a constant.  Now for VRP my long-term plan is to get rid of
symbolic ranges altogether to make it cheaper and easier to keep value-range
information across passes.


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rguenth at gcc dot gnu dot org changed:

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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23821