This is the mail archive of the
gcc-bugs@gcc.gnu.org
mailing list for the GCC project.
[Bug tree-optimization/45970] tree DSE misses many obvious dead stores
- 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: Wed, 13 Oct 2010 13:03:55 +0000
- Subject: [Bug tree-optimization/45970] tree DSE misses many obvious dead stores
- Auto-submitted: auto-generated
- References: <bug-45970-4@http.gcc.gnu.org/bugzilla/>
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45970
--- Comment #2 from Richard Guenther <rguenth at gcc dot gnu.org> 2010-10-13 13:03:37 UTC ---
Author: rguenth
Date: Wed Oct 13 13:03:31 2010
New Revision: 165422
URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=165422
Log:
2010-10-13 Richard Guenther <rguenther@suse.de>
PR tree-optimization/45970
* tree-ssa-alias.h (stmt_kills_ref_p): Declare.
* tree-ssa-alias.c (stmt_kills_ref_p_1): New function.
(stmt_kills_ref_p): Likewise.
* tree-ssa-dse.c (dse_optimize_stmt): Use it.
* gcc.dg/tree-ssa/ssa-dse-13.c: New testcase.
Added:
trunk/gcc/testsuite/gcc.dg/tree-ssa/ssa-dse-13.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/testsuite/ChangeLog
trunk/gcc/tree-ssa-alias.c
trunk/gcc/tree-ssa-alias.h
trunk/gcc/tree-ssa-dse.c