https://gcc.gnu.org/bugzilla/show_bug.cgi?id=33562
--- Comment #26 from Jeffrey A. Law ---
Author: law
Date: Fri Jan 13 15:42:08 2017
New Revision: 22
URL: https://gcc.gnu.org/viewcvs?rev=22=gcc=rev
Log:
PR tree-optimization/33562
PR tree-optimization/61912
PR tree-optimization/77485
* doc/invoke.texi: Document new dse-max-object-size param.
* params.def (PARM_DSE_MAX_OBJECT_SIZE): New PARAM.
* tree-ssa-dse.c: Include params.h.
(dse_store_status): New enum.
(initialize_ao_ref_for_dse): New, partially extracted from
dse_optimize_stmt.
(valid_ao_ref_for_dse, normalize_ref): New.
(setup_live_bytes_from_ref, compute_trims): Likewise.
(clear_bytes_written_by, maybe_trim_complex_store): Likewise.
(maybe_trim_partially_dead_store): Likewise.
(maybe_trim_complex_store): Likewise.
(dse_classify_store): Renamed from dse_possibly_dead_store_p.
Track what bytes live from the original store. Return tri-state
for dead, partially dead or live.
(dse_dom_walker): Add constructor, destructor and new private members.
(delete_dead_call, delete_dead_assignment): New extracted from
dse_optimize_stmt.
(dse_optimize_stmt): Make a member of dse_dom_walker.
Use initialize_ao_ref_for_dse.
PR tree-optimization/33562
PR tree-optimization/61912
PR tree-optimization/77485
* gcc.dg/tree-ssa/complex-4.c: Remove xfail.
* gcc.dg/tree-ssa/complex-5.c: Likewise.
* gcc.dg/tree-ssa/ssa-dse-9.c: Likewise.
* gcc.dg/tree-ssa/ssa-dse-18.c: New test.
* gcc.dg/tree-ssa/ssa-dse-19.c: Likewise.
* gcc.dg/tree-ssa/ssa-dse-20.c: Likewise.
* gcc.dg/tree-ssa/ssa-dse-21.c: Likewise.
Added:
trunk/gcc/testsuite/gcc.dg/tree-ssa/ssa-dse-18.c
- copied, changed from r21,
trunk/gcc/testsuite/gcc.dg/tree-ssa/complex-4.c
trunk/gcc/testsuite/gcc.dg/tree-ssa/ssa-dse-19.c
- copied, changed from r21,
trunk/gcc/testsuite/gcc.dg/tree-ssa/complex-4.c
trunk/gcc/testsuite/gcc.dg/tree-ssa/ssa-dse-20.c
- copied, changed from r21,
trunk/gcc/testsuite/gcc.dg/tree-ssa/complex-5.c
trunk/gcc/testsuite/gcc.dg/tree-ssa/ssa-dse-21.c
- copied, changed from r21,
trunk/gcc/testsuite/gcc.dg/tree-ssa/complex-5.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/doc/invoke.texi
trunk/gcc/params.def
trunk/gcc/testsuite/ChangeLog
trunk/gcc/testsuite/gcc.dg/tree-ssa/complex-4.c
trunk/gcc/testsuite/gcc.dg/tree-ssa/complex-5.c
trunk/gcc/testsuite/gcc.dg/tree-ssa/ssa-dse-9.c
trunk/gcc/tree-ssa-dse.c
