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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: "spop at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 2 Jul 2010 16:34:45 -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 #16 from spop at gcc dot gnu dot org 2010-07-02 16:34 -------
Subject: Bug 44576
Author: spop
Date: Fri Jul 2 16:34:29 2010
New Revision: 161727
URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=161727
Log:
PR 44576: miss rate computation improvement for prefetching loop arrays.
2010-07-02 Changpeng Fang <changpeng.fang@amd.com>
PR middle-end/44576
* tree-ssa-loop-prefetch.c (compute_miss_rate): Return 1000 (out
of 1000) for miss rate if the address diference is greater than or
equal to the cache line size (the two reference will never hit the
same cache line).
Modified:
trunk/gcc/ChangeLog
trunk/gcc/tree-ssa-loop-prefetch.c
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44576