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[Bug middle-end/44576] [4.5/4.6 Regression] testsuite/gfortran.dg/zero_sized_1.f90 with huge compile time on prefetching + peeling
- From: "borntraeger at de dot ibm dot com" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 27 Jun 2010 11:09:35 -0000
- Subject: [Bug middle-end/44576] [4.5/4.6 Regression] testsuite/gfortran.dg/zero_sized_1.f90 with huge compile time on prefetching + peeling
- References: <bug-44576-18712@http.gcc.gnu.org/bugzilla/>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Comment #9 from borntraeger at de dot ibm dot com 2010-06-27 11:09 -------
So there seem to be at least two problems:
1. exploding complexity in compute_miss_rate (the start for this bugzilla)
2. effects due to prefetching seen in other passes
I think the attached patch cures 1. What shall we do about 2? Opening another
bugzilla or tracking the problems here?
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44576