[Bug tree-optimization/52009] Another missed tail merging opportunity
vries at gcc dot gnu.org
gcc-bugzilla@gcc.gnu.org
Fri Jul 6 11:08:00 GMT 2012
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52009
--- Comment #5 from vries at gcc dot gnu.org 2012-07-06 11:07:36 UTC ---
Author: vries
Date: Fri Jul 6 11:07:32 2012
New Revision: 189321
URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=189321
Log:
2012-07-06 Tom de Vries <tom@codesourcery.com>
PR tree-optimization/52009
* tree-ssa-tail-merge.c (gimple_equal_p): For GIMPLE_ASSIGN, compare
value numbers of gimple_vdef.
* tree-ssa-sccvn.h (vn_reference_insert): Add vdef parameter to
prototype.
* tree-ssa-sccvn.c (copy_reference_ops_from_ref): Handle MODIFY_EXPR.
(vn_reference_insert): Add and handle vdef parameter.
(visit_reference_op_load): Add argument to vn_reference_insert call.
(visit_reference_op_store): Find value number of vdef of store. Insert
value number of vdef of store.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/tree-ssa-sccvn.c
trunk/gcc/tree-ssa-sccvn.h
trunk/gcc/tree-ssa-tail-merge.c
--- Comment #6 from vries at gcc dot gnu.org 2012-07-06 11:07:41 UTC ---
Author: vries
Date: Fri Jul 6 11:07:37 2012
New Revision: 189322
URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=189322
Log:
2012-07-06 Tom de Vries <tom@codesourcery.com>
PR tree-optimization/52009
* gcc.dg/pr51879-7.c: New test.
* gcc.dg/pr51879-18.c: New test.
Added:
trunk/gcc/testsuite/gcc.dg/pr51879-18.c
trunk/gcc/testsuite/gcc.dg/pr51879-7.c
Modified:
trunk/gcc/testsuite/ChangeLog
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