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[Bug rtl-optimization/48037] Missed optimization: unnecessary register moves
- 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 Mar 2011 12:22:28 +0000
- Subject: [Bug rtl-optimization/48037] Missed optimization: unnecessary register moves
- Auto-submitted: auto-generated
- References: <bug-48037-4@http.gcc.gnu.org/bugzilla/>
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48037
--- Comment #7 from Richard Guenther <rguenth at gcc dot gnu.org> 2011-03-15 12:22:18 UTC ---
Author: rguenth
Date: Tue Mar 15 12:22:12 2011
New Revision: 170986
URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=170986
Log:
2011-03-15 Richard Guenther <rguenther@suse.de>
PR tree-optimization/48037
* tree-ssa.c (maybe_rewrite_mem_ref_base): Rewrite vector
selects into BIT_FIELD_REFs.
(non_rewritable_mem_ref_base): Check if a MEM_REF is a
vector select.
* gcc.target/i386/pr48037-1.c: New testcase.
Added:
trunk/gcc/testsuite/gcc.target/i386/pr48037-1.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/testsuite/ChangeLog
trunk/gcc/tree-ssa.c