[Bug middle-end/44576] [4.5/4.6 Regression] testsuite/gfortran.dg/zero_sized_1.f90 with huge compile time on prefetching + peeling

[borntraeger at de dot ibm dot com]

------- Comment #3 from borntraeger at de dot ibm dot com  2010-06-25 09:02 
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Created an attachment (id=21001)
 --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=21001&action=view)
Potential fix for compile time regression

Here is a potential fix. We just limit prefetching to loops with a "low" amount
of memory references and bail out if the amount of references is too large.


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44576