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[Bug rtl-optimization/60947] [4.9/4.10 Regression] Unable to handle kernel paging request (linux kernel 2.6.28.9) with gcc 4.9 release
- From: "yufan8.chen at gmail dot com" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Mon, 28 Apr 2014 09:35:31 +0000
- Subject: [Bug rtl-optimization/60947] [4.9/4.10 Regression] Unable to handle kernel paging request (linux kernel 2.6.28.9) with gcc 4.9 release
- Auto-submitted: auto-generated
- References: <bug-60947-4 at http dot gcc dot gnu dot org/bugzilla/>
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60947
--- Comment #10 from YuFan <yufan8.chen at gmail dot com> ---
After more tests, I figure out the issue is caused by the commit:
SVN revision:
r206552 | amker | 2014-01-11 17:33:39 +0800 (å, 11 1æ 2014) | 7 lines
* tree-ssa-loop-ivopts.c (iv_ca_narrow): New parameter.
Start narrowing with START. Apply candidate-use pair
and check overall cost in narrowing.
(iv_ca_prune): Pass new argument.