[Bug tree-optimization/34195] missed optimization with store motion (vectorizer)

[eres at il dot ibm dot com]

------- Comment #2 from eres at il dot ibm dot com  2007-11-25 11:21 -------
I have been testing Zdenek's initial lim patch on SPEC2006 and tramp3d but saw
no effect on the preformance.  We had an example which is similar to the
testcase shown in (http://gcc.gnu.org/ml/gcc-patches/2007-03/txt00067.txt)
which boosted the performance x1.5 due to the store motion (it also opened
opportunity for the vectorizer).  On the other hand; this patch may increased
register pressure.


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=34195