[Bug tree-optimization/43186] [4.4 Regression] A loop in tree_unroll_loops_completely never ends

[hubicka at ucw dot cz]

------- Comment #16 from hubicka at ucw dot cz  2010-04-08 13:26 -------
Subject: Re:  [4.4 Regression] A loop in
        tree_unroll_loops_completely never ends

> The main issue is that we are doing a very poor job in limiting the work
> we do during complete unrolling (as well as leaving as little work for
> subsequent passes as possible).

Well, I guess in addition to number of instructions after optimizing we can
also estimate number of instruction we actually produce by unrolling and have
some cutoff (a lot bigger than for code size estimate growth) on those as
well...

Honza


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43186