[Bug rtl-optimization/30957] Misscompare with variable expansion optimization

[eres at il dot ibm dot com]

------- Comment #5 from eres at il dot ibm dot com  2007-02-26 13:51 -------
The reason that this tescase fails is because the expansion is been initialized
with +0, which means that it's final result will be +0  and not -0 as expected.

expansion += d --> expansion += -0 --> +0


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=30957