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[Bug tree-optimization/53355] Autovectorization of a simple loop could be improved.
- From: "rguenth at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Tue, 15 May 2012 13:18:42 +0000
- Subject: [Bug tree-optimization/53355] Autovectorization of a simple loop could be improved.
- Auto-submitted: auto-generated
- References: <bug-53355-4@http.gcc.gnu.org/bugzilla/>
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53355
--- Comment #2 from Richard Guenther <rguenth at gcc dot gnu.org> 2012-05-15 13:18:42 UTC ---
Author: rguenth
Date: Tue May 15 13:18:32 2012
New Revision: 187535
URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=187535
Log:
2012-05-15 Richard Guenther <rguenther@suse.de>
PR tree-optimization/53355
* tree-vrp.c (extract_range_from_binary_expr_1): Handle LSHIFT_EXPRs
by constants.
* gcc.dg/tree-ssa/vrp67.c: New testcase.
Added:
trunk/gcc/testsuite/gcc.dg/tree-ssa/vrp67.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/testsuite/ChangeLog
trunk/gcc/tree-vrp.c