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[Bug tree-optimization/41490] tree-ssa-sink does not really work
- 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 11:09:18 +0000
- Subject: [Bug tree-optimization/41490] tree-ssa-sink does not really work
- Auto-submitted: auto-generated
- References: <bug-41490-4@http.gcc.gnu.org/bugzilla/>
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=41490
--- Comment #3 from Richard Guenther <rguenth at gcc dot gnu.org> 2011-03-15 11:09:14 UTC ---
Author: rguenth
Date: Tue Mar 15 11:09:09 2011
New Revision: 170984
URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=170984
Log:
2011-03-15 Richard Guenther <rguenther@suse.de>
PR tree-optimization/41490
* tree-ssa-dce.c (propagate_necessity): Handle returns without
value but with VUSE.
* tree-ssa-operands.c (parse_ssa_operands): Add a VUSE on all
return statements.
* tree-ssa-sink.c (statement_sink_location): Fix store sinking.
* tree-ssa-phiopt.c (tree_ssa_phiopt_worker): Handle virtual PHIs.
* tree-tailcall.c (find_tail_calls): Ignore returns.
* gcc.dg/tree-ssa/ssa-sink-6.c: New testcase.
* gcc.dg/tree-ssa/ssa-sink-7.c: Likewise.
* gcc.dg/tree-ssa/ssa-sink-8.c: Likewise.
* gcc.dg/tree-ssa/ssa-sink-9.c: Likewise.
* g++.dg/tree-ssa/pr33604.C: Adjust.
Added:
trunk/gcc/testsuite/gcc.dg/tree-ssa/ssa-sink-6.c
trunk/gcc/testsuite/gcc.dg/tree-ssa/ssa-sink-7.c
trunk/gcc/testsuite/gcc.dg/tree-ssa/ssa-sink-8.c
trunk/gcc/testsuite/gcc.dg/tree-ssa/ssa-sink-9.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/testsuite/ChangeLog
trunk/gcc/testsuite/g++.dg/tree-ssa/pr33604.C
trunk/gcc/tree-ssa-dce.c
trunk/gcc/tree-ssa-operands.c
trunk/gcc/tree-ssa-phiopt.c
trunk/gcc/tree-ssa-sink.c
trunk/gcc/tree-tailcall.c