[Bug c/40987] Wrong optimization with if-conversion

[thomas at coware dot com]

------- Comment #4 from thomas at coware dot com  2009-08-06 19:25 -------
By the way, I see the same failure also with gcc 4.1.2 and 4.2 without any fno-
options.

I thought it would be a good idea to hunt the problem down to a single
optimization mechanism, which seems to be if-conversion. I guess on 4.3 and 4.4
some of the tree optimizations change the code in a way that the problem is not
visible - but it is most likely there anyway and might be triggered by other
test cases.


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=40987