This patch removes graphite-scop-detection.c:limit_scops function and fix
related issues arising because of that. The functionality limit_scop was added
as an intermediate step to discard the loops which graphite could not
handle. Removing limit_scop required handling of different cases of loops and
surrounding code. The scop is now larger so most test cases required 'number of
scops detected' to be fixed. By increasing the size of scop we can now optimize
loops which are 'siblings' of each other. This could enable loop fusion on a
number of loops. Since in the graphite framework we mostly want to opimize
loop-nests/adjacent-loops, we now discard scops with less than 2 loops. We
also discard scops without any data references.
Essentially:
- Remove limite_scops.
- Only select scops when there are at least two loops (loop nest or, side by side).
- Discard loops without data-refs.
- Fix test cases.
Passes bootstrap and reg-test.
gcc/ChangeLog:
2015-09-02 Aditya Kumar <hiraditya@msn.com>
Sebastian Pop <s.pop@samsung.com>
* graphite-isl-ast-to-gimple.c (gcc_expression_from_isl_ast_expr_id):
Return the parameter if it was saved in corresponding
parameter_rename_map of the region.
(copy_def): Copy def from sese region to the newly created region.
(copy_internal_parameters): Copy all the internal parameters defined
within a region to the newly created region.
(graphite_regenerate_ast_isl): Copy parameters to the new region before
translating isl to gimple.
* graphite-scop-detection.c (graphite_can_represent_loop): Bail out if
the loop-nest does not have any data-references.
(build_graphite_scops): Create a scop only when there is at least one
loop inside it.
(contains_only_close_phi_nodes): Deleted.
(print_graphite_scop_statistics): Deleted
(print_graphite_statistics): Deleted
(limit_scops): Deleted.
(build_scops): Removed call to limit_scops.
* sese.c (new_sese): Construct.
(free_sese): Destruct.
(sese_add_exit_phis_edge): update_stmt after exit phi edge has been
added.
(set_rename): Pass sese region so that parameters inside the region can
be added to its parameter_rename_map.
(rename_uses): Pass sese region.
(graphite_copy_stmts_from_block): Do not copy parameters that have been
generated in the header of the scop. For each SSA_NAME in the
parameter_rename_map rename its usage.
(invariant_in_sese_p_rec): Return false if tree t is defined outside
sese region.
(scalar_evolution_in_region): If the tree t is invariant just return t.
* sese.h: Added a parameter renamne map (parameter_rename_map_t) to
struct sese to keep track of all the parameters which need renaming.
* tree-data-ref.c (loop_nest_has_data_refs): Check if a loop nest has
any data-refs.
* tree-data-ref.h: Declaration of loop_nest_has_data_refs.
gcc/testsuite/ChangeLog:
2015-09-02 Aditya Kumar <hiraditya@msn.com>
Sebastian Pop <s.pop@samsung.com>
* gcc.dg/graphite/block-0.c: Modifed test case to match current output.
* gcc.dg/graphite/block-1.c: Same.
* gcc.dg/graphite/block-5.c: Same.
* gcc.dg/graphite/block-6.c: Same.
* gcc.dg/graphite/interchange-1.c: Same.
* gcc.dg/graphite/interchange-10.c: Same.
* gcc.dg/graphite/interchange-11.c: Same.
* gcc.dg/graphite/interchange-13.c: Same.
* gcc.dg/graphite/interchange-14.c: Same.
* gcc.dg/graphite/interchange-3.c: Same.
* gcc.dg/graphite/interchange-4.c: Same.
* gcc.dg/graphite/interchange-7.c: Same.
* gcc.dg/graphite/interchange-8.c: Same.
* gcc.dg/graphite/interchange-9.c: Same.
* gcc.dg/graphite/isl-codegen-loop-dumping.c: Same.
* gcc.dg/graphite/pr35356-1.c (foo): Same.
* gcc.dg/graphite/pr37485.c: Same.
* gcc.dg/graphite/scop-0.c (int toto): Same.
* gcc.dg/graphite/scop-1.c: Same.
* gcc.dg/graphite/scop-10.c: Same.
* gcc.dg/graphite/scop-11.c: Same.
* gcc.dg/graphite/scop-12.c: Same.
* gcc.dg/graphite/scop-13.c: Same.
* gcc.dg/graphite/scop-16.c: Same.
* gcc.dg/graphite/scop-17.c: Same.
* gcc.dg/graphite/scop-18.c: Same.
* gcc.dg/graphite/scop-2.c: Same.
* gcc.dg/graphite/scop-21.c (int test): Same.
* gcc.dg/graphite/scop-22.c (void foo): Same.
* gcc.dg/graphite/scop-4.c: Same.
* gcc.dg/graphite/scop-5.c: Same.
* gcc.dg/graphite/scop-6.c: Same.
* gcc.dg/graphite/scop-7.c: Same.
* gcc.dg/graphite/scop-8.c: Same.
* gcc.dg/graphite/scop-9.c: Same.
* gcc.dg/graphite/scop-mvt.c (void mvt): Introduced dependency so that
data-refs remain inside the inner loop.
* gcc.dg/graphite/uns-block-1.c: Modifed test case to match o/p.
* gcc.dg/graphite/uns-interchange-14.c: Same.
* gcc.dg/graphite/uns-interchange-9.c: Same.
* gfortran.dg/graphite/interchange-3.f90
libgomp/ChangeLog:
2015-09-04 Aditya Kumar <hiraditya@msn.com>
Sebastian Pop <s.pop@samsung.com>
* testsuite/libgomp.graphite/bounds.c (int foo): Modifed test case to
match o/p.
* testsuite/libgomp.graphite/force-parallel-1.c (void parloop): Same.
* testsuite/libgomp.graphite/force-parallel-4.c: Same.
* testsuite/libgomp.graphite/force-parallel-5.c: Same.
* testsuite/libgomp.graphite/force-parallel-7.c: Same.
* testsuite/libgomp.graphite/force-parallel-8.c: Same.
Co-Authored-By: Sebastian Pop <s.pop@samsung.com>
From-SVN: r227567
2015-03-27 Tom de Vries <tom@codesourcery.com>
PR testsuite/65594
* testsuite/libgomp.graphite/force-parallel-6.c (abort): Declare.
(init, check): New function.
(foo): Change return type to void.
(main): Call init and check.
From-SVN: r221728
2015-03-27 Tom de Vries <tom@codesourcery.com>
PR testsuite/65594
* testsuite/libgomp.graphite/force-parallel-6.c (M): Define.
(foo): Use M for non-inner loops to scale down test-case.
From-SVN: r221727
2013-06-20 Iain Sandoe <iain@codesourcery.com>
Cesar Philippidis <cesar@codesourcery.com>
* testsuite/lib/libgomp.exp: Reorder lib loads into dependency order.
Do not load_gcc_lib gcc-dg.exp and add a comment as to why.
* testsuite/libgomp.c/c.exp: load_gcc_lib gcc-dg.exp.
* testsuite/libgomp.fortran/fortran.exp: Likewise.
* testsuite/libgomp.graphite/graphite.exp: Likewise.
* testsuite/libgomp.c++/c++.exp: load_gcc_lib gcc-dg.exp.
Use dg-runtest rather than gfortran-dg-runtest.
Co-Authored-By: Cesar Philippidis <cesar@codesourcery.com>
From-SVN: r200253
2011-07-27 Sebastian Pop <sebastian.pop@amd.com>
PR tree-optimization/49471
* tree-ssa-loop-manip.c (canonicalize_loop_ivs): Build an unsigned
iv only when the largest type is unsigned. Do not call
lang_hooks.types.type_for_size.
* testsuite/libgomp.graphite/force-parallel-1.c: Un-xfail.
* testsuite/libgomp.graphite/force-parallel-2.c: Adjust pattern.
From-SVN: r176838
Fix pr42644.
Fix pr42130 (dealII).
2010-03-03 Tobias Grosser <grosser@fim.uni-passau.de>
* gcc/graphite-clast-to-gimple.c (clast_to_gcc_expression): Also
handle conversions from pointer to integers.
(gcc_type_for_cloog_iv): Choose the smalles signed integer as an
induction variable, to be able to work with code generated by
CLooG.
* gcc/graphite-sese-to-poly.c (scop_ivs_can_be_represented): New.
(build_poly_scop): Bail out if we cannot codegen a loop.
* gcc/testsuite/gcc.dg/graphite/id-18.c: New.
* gcc/testsuite/gcc.dg/graphite/run-id-pr42644.c: New.
* libgomp/testsuite/libgomp.graphite/force-parallel-1.c: Adjust.
* libgomp/testsuite/libgomp.graphite/force-parallel-2.c: Adjust.
From-SVN: r157286
2010-02-07 Sebastian Pop <sebastian.pop@amd.com>
PR middle-end/42988
* graphite-dependences.c (dependence_polyhedron): Set PDDR_KIND
to unknown_dependence.
(graphite_legal_transform_dr): Handle the unknown_dependence.
(graphite_carried_dependence_level_k): Same.
* testsuite/libgomp.graphite/force-parallel-5.c: Un-XFAILed.
* testsuite/libgomp.graphite/pr41118.c: Renamed from pr4118.
From-SVN: r156582
2009-10-22 Razya Ladelsky <razya@il.ibm.com>
* cfgloopmanip.c (duplicate_subloops): Export.
* tree-parloops.c (loop_parallel_p): Dump if loop is innermost.
(transform_to_exit_first_loop): Duplicate bbs starting from
header up to loop->latch instead of exit->src.
Initialize control variable to the correct number of iterations.
(gather_scalar_reductions): Do not register double reductions.
(parallelize_loops): Dump which loop is tested.
Indicate whether the parallelized loop is inner or not.
Remove the innermost-loop requirement.
* cfgloop.h (duplicate_subloops): Export.
* tree-cfg.c (add_phi_args_after_redirect): New function.
(gimple_duplicate_sese_tail): Remove the no-subloops constraint.
Call duplicate_subloops.
Update number of iterations at the exit condition.
Don't redirect nexits always to the loop exit.
Redirect copied edges from latch to the loop exit.
* testsuite/libgomp.graphite/force-parallel-2.c: Adjust scan.
* testsuite/gcc.dg/autopar/outer-1.c: New testcase.
* testsuite/gcc.dg/autopar/outer-2.c: New testcase.
* testsuite/gcc.dg/autopar/outer-3.c: New testcase.
* testsuite/gcc.dg/autopar/outer-4.c: New testcase.
* testsuite/gcc.dg/autopar/outer-5.c: New testcase.
* testsuite/gcc.dg/autopar/outer-6.c: New testcase.
From-SVN: r153457
2009-09-17 Alexander Monakov <amonakov@ispras.ru>
gcc:
* graphite-sese-to-poly.c (pdr_add_data_dimensions): Add bounds only
for ARRAY_REFs. Use array_ref_{low,up}_bound to determine bounds.
libgomp:
* testsuite/libgomp.graphite/bounds.c: New test.
From-SVN: r151802
