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[Bug tree-optimization/43491] Unnecessary temporary for global register variable
- From: "jye2 at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Fri, 23 Dec 2011 05:43:17 +0000
- Subject: [Bug tree-optimization/43491] Unnecessary temporary for global register variable
- Auto-submitted: auto-generated
- References: <bug-43491-4@http.gcc.gnu.org/bugzilla/>
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43491
--- Comment #6 from jye2 at gcc dot gnu.org 2011-12-23 05:43:17 UTC ---
Author: jye2
Date: Fri Dec 23 05:43:09 2011
New Revision: 182650
URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=182650
Log:
2011-12-22 Bin Cheng <bin.cheng@arm.com>
Richard Guenther <rguenther@suse.de>
PR tree-optimization/43491
* tree-ssa-pre.c (eliminate): Don't replace global register
variable when it is the RHS of a single assign.
testsuite:
* gcc.dg/tree-ssa/pr43491.c: New test.
Added:
trunk/gcc/testsuite/gcc.dg/tree-ssa/pr43491.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/testsuite/ChangeLog
trunk/gcc/tree-ssa-pre.c