[Bug tree-optimization/32540] [4.3 Regression] Exponential time behavior in PRE

[rguenth at gcc dot gnu dot org]

------- Comment #7 from rguenth at gcc dot gnu dot org  2007-10-20 10:14 -------
I guess we just compute all 2**26 constants that can end up at the conditional
store.  And indeed, the number of 'Created value .*' in the dump matches this
(modulo some constant offset).  This is PPRE at work, which probably should
be limited to a sub-CFG somehow.


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=32540