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

[spop 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


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