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r153551 - in /trunk/gcc: ChangeLog testsuite/Ch...
- From: matz at gcc dot gnu dot org
- To: gcc-cvs at gcc dot gnu dot org
- Date: Mon, 26 Oct 2009 13:00:41 -0000
- Subject: r153551 - in /trunk/gcc: ChangeLog testsuite/Ch...
Author: matz
Date: Mon Oct 26 13:00:36 2009
New Revision: 153551
URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=153551
Log:
PR tree-optimization/41783
* tree-ssa-alias.c (get_continuation_for_phi): Export, add a special
case for simple diamonds
* tree-ssa-alias.h (get_continuation_for_phi): Declare.
* tree-ssa-pre.c (translate_vuse_through_block): Add same_valid
argument, use alias oracle to skip some vdefs.
(phi_translate_1): Change call to above, don't allocate new
value ids if they can stay the same.
(compute_avail): Allow vuse walking when looking up references.
testsuite/
* gcc.dg/pr41783.c: New test.
* gcc.dg/tree-ssa/ssa-pre-23.c: Adjust.
* gcc.dg/tree-ssa/ssa-pre-24.c: Don't xfail anymore.
* gcc.dg/tree-ssa/ssa-pre-27.c: New test.
Added:
trunk/gcc/testsuite/gcc.dg/pr41783.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/testsuite/ChangeLog
trunk/gcc/testsuite/gcc.dg/tree-ssa/ssa-pre-23.c
trunk/gcc/testsuite/gcc.dg/tree-ssa/ssa-pre-24.c
trunk/gcc/tree-ssa-alias.c
trunk/gcc/tree-ssa-alias.h
trunk/gcc/tree-ssa-pre.c