[Bug tree-optimization/18888] [4.0 regression] loops miscompiled

[law at redhat dot com]

------- Additional Comments From law at redhat dot com  2004-12-14 17:55 -------
BTW, it's pretty easy now that I've sat down and analyzed this test to see
that my tree-ssa-dom.c patch from yesterday to fix pr18694 merely masked this
bug (pr18888) on Darwin.

As I mentioned earlier today, pr18888 is a problem in how we handle
coalescing and abnormal edges and is going to be very sensitive to the
precise order in which we decide to coalesce objects.

Yesterday's tree-ssa-dom.c patch for 18694 can very easily change coalescing
orderings and thus could easily mask this bug.



-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18888