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[Bug tree-optimization/79663] [7 Regression] r244815 causes 10% regression for spec1k/172.mgrid on AArch64
- From: "law at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Thu, 23 Feb 2017 22:02:32 +0000
- Subject: [Bug tree-optimization/79663] [7 Regression] r244815 causes 10% regression for spec1k/172.mgrid on AArch64
- Auto-submitted: auto-generated
- References: <bug-79663-4@http.gcc.gnu.org/bugzilla/>
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=79663
--- Comment #5 from Jeffrey A. Law <law at gcc dot gnu.org> ---
Author: law
Date: Thu Feb 23 22:02:01 2017
New Revision: 245689
URL: https://gcc.gnu.org/viewcvs?rev=245689&root=gcc&view=rev
Log:
2017-01-21 Bin Cheng <bin.cheng@arm.com>
PR tree-optimization/79663
* tree-predcom.c (combine_chains): Process refs in reverse order
only for ZERO length chains, and add explaining comment.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/tree-predcom.c