/* Loop optimizations over tree-ssa.
- Copyright (C) 2003, 2005, 2006, 2007 Free Software Foundation, Inc.
+ Copyright (C) 2003, 2005, 2006, 2007, 2008 Free Software Foundation, Inc.
This file is part of GCC.
#include "flags.h"
#include "tree-inline.h"
#include "tree-scalar-evolution.h"
-
-/* Initializes the loop structures. */
-
-static void
-tree_loop_optimizer_init (void)
-{
- loop_optimizer_init (LOOPS_NORMAL
- | LOOPS_HAVE_RECORDED_EXITS);
- rewrite_into_loop_closed_ssa (NULL, TODO_update_ssa);
-}
+#include "tree-vectorizer.h"
/* The loop superpass. */
return flag_tree_loop_optimize != 0;
}
-struct tree_opt_pass pass_tree_loop =
+struct gimple_opt_pass pass_tree_loop =
{
+ {
+ GIMPLE_PASS,
"loop", /* name */
gate_tree_loop, /* gate */
NULL, /* execute */
0, /* properties_provided */
0, /* properties_destroyed */
TODO_ggc_collect, /* todo_flags_start */
- TODO_dump_func | TODO_verify_ssa | TODO_ggc_collect, /* todo_flags_finish */
- 0 /* letter */
+ TODO_dump_func | TODO_verify_ssa | TODO_ggc_collect /* todo_flags_finish */
+ }
};
/* Loop optimizer initialization. */
static unsigned int
tree_ssa_loop_init (void)
{
- tree_loop_optimizer_init ();
+ loop_optimizer_init (LOOPS_NORMAL
+ | LOOPS_HAVE_RECORDED_EXITS);
+ rewrite_into_loop_closed_ssa (NULL, TODO_update_ssa);
+
if (number_of_loops () <= 1)
return 0;
return 0;
}
-struct tree_opt_pass pass_tree_loop_init =
+struct gimple_opt_pass pass_tree_loop_init =
{
+ {
+ GIMPLE_PASS,
"loopinit", /* name */
NULL, /* gate */
tree_ssa_loop_init, /* execute */
0, /* properties_provided */
0, /* properties_destroyed */
0, /* todo_flags_start */
- TODO_dump_func | TODO_verify_loops, /* todo_flags_finish */
- 0 /* letter */
+ TODO_dump_func | TODO_verify_loops /* todo_flags_finish */
+ }
};
/* Loop invariant motion pass. */
return flag_tree_loop_im != 0;
}
-struct tree_opt_pass pass_lim =
+struct gimple_opt_pass pass_lim =
{
+ {
+ GIMPLE_PASS,
"lim", /* name */
gate_tree_ssa_loop_im, /* gate */
tree_ssa_loop_im, /* execute */
0, /* properties_provided */
0, /* properties_destroyed */
0, /* todo_flags_start */
- TODO_dump_func | TODO_verify_loops, /* todo_flags_finish */
- 0 /* letter */
+ TODO_dump_func | TODO_verify_loops /* todo_flags_finish */
+ }
};
/* Loop unswitching pass. */
return flag_unswitch_loops != 0;
}
-struct tree_opt_pass pass_tree_unswitch =
+struct gimple_opt_pass pass_tree_unswitch =
{
+ {
+ GIMPLE_PASS,
"unswitch", /* name */
gate_tree_ssa_loop_unswitch, /* gate */
tree_ssa_loop_unswitch, /* execute */
0, /* properties_destroyed */
0, /* todo_flags_start */
TODO_ggc_collect | TODO_dump_func
- | TODO_verify_loops, /* todo_flags_finish */
- 0 /* letter */
+ | TODO_verify_loops /* todo_flags_finish */
+ }
};
/* Predictive commoning. */
return flag_predictive_commoning != 0;
}
-struct tree_opt_pass pass_predcom =
+struct gimple_opt_pass pass_predcom =
{
+ {
+ GIMPLE_PASS,
"pcom", /* name */
gate_tree_predictive_commoning, /* gate */
run_tree_predictive_commoning, /* execute */
0, /* properties_destroyed */
0, /* todo_flags_start */
TODO_dump_func | TODO_verify_loops
- | TODO_update_ssa_only_virtuals, /* todo_flags_finish */
- 0 /* letter */
+ | TODO_update_ssa_only_virtuals /* todo_flags_finish */
+ }
};
/* Loop autovectorization. */
static unsigned int
tree_vectorize (void)
{
+ if (number_of_loops () <= 1)
+ return 0;
+
return vectorize_loops ();
}
static bool
gate_tree_vectorize (void)
{
- return flag_tree_vectorize && number_of_loops () > 1;
+ return flag_tree_vectorize;
}
-struct tree_opt_pass pass_vectorize =
+struct gimple_opt_pass pass_vectorize =
{
+ {
+ GIMPLE_PASS,
"vect", /* name */
gate_tree_vectorize, /* gate */
tree_vectorize, /* execute */
0, /* properties_destroyed */
TODO_verify_loops, /* todo_flags_start */
TODO_dump_func | TODO_update_ssa
- | TODO_ggc_collect, /* todo_flags_finish */
- 0 /* letter */
+ | TODO_ggc_collect /* todo_flags_finish */
+ }
};
/* Loop nest optimizations. */
return flag_tree_loop_linear != 0;
}
-struct tree_opt_pass pass_linear_transform =
+struct gimple_opt_pass pass_linear_transform =
{
+ {
+ GIMPLE_PASS,
"ltrans", /* name */
gate_tree_linear_transform, /* gate */
tree_linear_transform, /* execute */
0, /* properties_destroyed */
0, /* todo_flags_start */
TODO_dump_func | TODO_verify_loops
- | TODO_ggc_collect, /* todo_flags_finish */
- 0 /* letter */
+ | TODO_update_ssa_only_virtuals
+ | TODO_ggc_collect /* todo_flags_finish */
+ }
+};
+
+/* GRAPHITE optimizations. */
+
+static unsigned int
+graphite_transforms (void)
+{
+ if (!current_loops)
+ return 0;
+
+ graphite_transform_loops ();
+
+ return 0;
+}
+
+static bool
+gate_graphite_transforms (void)
+{
+ /* Enable -fgraphite pass if any one of the graphite optimization flags
+ is turned on. */
+ if (flag_loop_block || flag_loop_interchange || flag_loop_strip_mine
+ || flag_graphite_identity)
+ flag_graphite = 1;
+
+ return flag_graphite != 0;
+}
+
+struct gimple_opt_pass pass_graphite_transforms =
+{
+ {
+ GIMPLE_PASS,
+ "graphite", /* name */
+ gate_graphite_transforms, /* gate */
+ graphite_transforms, /* execute */
+ NULL, /* sub */
+ NULL, /* next */
+ 0, /* static_pass_number */
+ TV_GRAPHITE_TRANSFORMS, /* tv_id */
+ PROP_cfg | PROP_ssa, /* properties_required */
+ 0, /* properties_provided */
+ 0, /* properties_destroyed */
+ 0, /* todo_flags_start */
+ TODO_verify_loops /* todo_flags_finish */
+ }
};
/* Check the correctness of the data dependence analyzers. */
return flag_check_data_deps != 0;
}
-struct tree_opt_pass pass_check_data_deps =
+struct gimple_opt_pass pass_check_data_deps =
{
+ {
+ GIMPLE_PASS,
"ckdd", /* name */
gate_check_data_deps, /* gate */
check_data_deps, /* execute */
0, /* properties_provided */
0, /* properties_destroyed */
0, /* todo_flags_start */
- TODO_dump_func, /* todo_flags_finish */
- 0 /* letter */
+ TODO_dump_func /* todo_flags_finish */
+ }
};
/* Canonical induction variable creation pass. */
return flag_tree_loop_ivcanon != 0;
}
-struct tree_opt_pass pass_iv_canon =
+struct gimple_opt_pass pass_iv_canon =
{
+ {
+ GIMPLE_PASS,
"ivcanon", /* name */
gate_tree_ssa_loop_ivcanon, /* gate */
tree_ssa_loop_ivcanon, /* execute */
0, /* properties_provided */
0, /* properties_destroyed */
0, /* todo_flags_start */
- TODO_dump_func | TODO_verify_loops, /* todo_flags_finish */
- 0 /* letter */
+ TODO_dump_func | TODO_verify_loops /* todo_flags_finish */
+ }
};
/* Propagation of constants using scev. */
return flag_tree_scev_cprop;
}
-struct tree_opt_pass pass_scev_cprop =
+struct gimple_opt_pass pass_scev_cprop =
{
+ {
+ GIMPLE_PASS,
"sccp", /* name */
gate_scev_const_prop, /* gate */
scev_const_prop, /* execute */
0, /* properties_destroyed */
0, /* todo_flags_start */
TODO_dump_func | TODO_cleanup_cfg
- | TODO_update_ssa_only_virtuals,
+ | TODO_update_ssa_only_virtuals
/* todo_flags_finish */
- 0 /* letter */
-};
-
-/* Remove empty loops. */
-
-static unsigned int
-tree_ssa_empty_loop (void)
-{
- if (number_of_loops () <= 1)
- return 0;
-
- return remove_empty_loops ();
-}
-
-struct tree_opt_pass pass_empty_loop =
-{
- "empty", /* name */
- NULL, /* gate */
- tree_ssa_empty_loop, /* execute */
- NULL, /* sub */
- NULL, /* next */
- 0, /* static_pass_number */
- TV_COMPLETE_UNROLL, /* tv_id */
- PROP_cfg | PROP_ssa, /* properties_required */
- 0, /* properties_provided */
- 0, /* properties_destroyed */
- 0, /* todo_flags_start */
- TODO_dump_func | TODO_verify_loops
- | TODO_ggc_collect, /* todo_flags_finish */
- 0 /* letter */
+ }
};
/* Record bounds on numbers of iterations of loops. */
return 0;
}
-struct tree_opt_pass pass_record_bounds =
+struct gimple_opt_pass pass_record_bounds =
{
+ {
+ GIMPLE_PASS,
NULL, /* name */
NULL, /* gate */
tree_ssa_loop_bounds, /* execute */
0, /* properties_provided */
0, /* properties_destroyed */
0, /* todo_flags_start */
- 0, /* todo_flags_finish */
- 0 /* letter */
+ 0 /* todo_flags_finish */
+ }
};
/* Complete unrolling of loops. */
return tree_unroll_loops_completely (flag_unroll_loops
|| flag_peel_loops
- || optimize >= 3);
+ || optimize >= 3, true);
}
static bool
return true;
}
-struct tree_opt_pass pass_complete_unroll =
+struct gimple_opt_pass pass_complete_unroll =
{
+ {
+ GIMPLE_PASS,
"cunroll", /* name */
gate_tree_complete_unroll, /* gate */
tree_complete_unroll, /* execute */
0, /* properties_destroyed */
0, /* todo_flags_start */
TODO_dump_func | TODO_verify_loops
- | TODO_ggc_collect, /* todo_flags_finish */
- 0 /* letter */
+ | TODO_ggc_collect /* todo_flags_finish */
+ }
+};
+
+/* Complete unrolling of inner loops. */
+
+static unsigned int
+tree_complete_unroll_inner (void)
+{
+ unsigned ret = 0;
+
+ loop_optimizer_init (LOOPS_NORMAL
+ | LOOPS_HAVE_RECORDED_EXITS);
+ if (number_of_loops () > 1)
+ {
+ scev_initialize ();
+ ret = tree_unroll_loops_completely (optimize >= 3, false);
+ free_numbers_of_iterations_estimates ();
+ scev_finalize ();
+ }
+ loop_optimizer_finalize ();
+
+ return ret;
+}
+
+static bool
+gate_tree_complete_unroll_inner (void)
+{
+ return optimize >= 2;
+}
+
+struct gimple_opt_pass pass_complete_unrolli =
+{
+ {
+ GIMPLE_PASS,
+ "cunrolli", /* name */
+ gate_tree_complete_unroll_inner, /* gate */
+ tree_complete_unroll_inner, /* execute */
+ NULL, /* sub */
+ NULL, /* next */
+ 0, /* static_pass_number */
+ TV_COMPLETE_UNROLL, /* tv_id */
+ PROP_cfg | PROP_ssa, /* properties_required */
+ 0, /* properties_provided */
+ 0, /* properties_destroyed */
+ 0, /* todo_flags_start */
+ TODO_dump_func | TODO_verify_loops
+ | TODO_ggc_collect /* todo_flags_finish */
+ }
+};
+
+/* Parallelization. */
+
+static bool
+gate_tree_parallelize_loops (void)
+{
+ return flag_tree_parallelize_loops > 1;
+}
+
+static unsigned
+tree_parallelize_loops (void)
+{
+ if (number_of_loops () <= 1)
+ return 0;
+
+ if (parallelize_loops ())
+ return TODO_cleanup_cfg | TODO_rebuild_alias;
+ return 0;
+}
+
+struct gimple_opt_pass pass_parallelize_loops =
+{
+ {
+ GIMPLE_PASS,
+ "parloops", /* name */
+ gate_tree_parallelize_loops, /* gate */
+ tree_parallelize_loops, /* execute */
+ NULL, /* sub */
+ NULL, /* next */
+ 0, /* static_pass_number */
+ TV_TREE_PARALLELIZE_LOOPS, /* tv_id */
+ PROP_cfg | PROP_ssa, /* properties_required */
+ 0, /* properties_provided */
+ 0, /* properties_destroyed */
+ 0, /* todo_flags_start */
+ TODO_dump_func | TODO_verify_loops /* todo_flags_finish */
+ }
};
/* Prefetching. */
return flag_prefetch_loop_arrays != 0;
}
-struct tree_opt_pass pass_loop_prefetch =
+struct gimple_opt_pass pass_loop_prefetch =
{
+ {
+ GIMPLE_PASS,
"aprefetch", /* name */
gate_tree_ssa_loop_prefetch, /* gate */
tree_ssa_loop_prefetch, /* execute */
0, /* properties_provided */
0, /* properties_destroyed */
0, /* todo_flags_start */
- TODO_dump_func | TODO_verify_loops, /* todo_flags_finish */
- 0 /* letter */
+ TODO_dump_func | TODO_verify_loops /* todo_flags_finish */
+ }
};
/* Induction variable optimizations. */
return flag_ivopts != 0;
}
-struct tree_opt_pass pass_iv_optimize =
+struct gimple_opt_pass pass_iv_optimize =
{
+ {
+ GIMPLE_PASS,
"ivopts", /* name */
gate_tree_ssa_loop_ivopts, /* gate */
tree_ssa_loop_ivopts, /* execute */
0, /* properties_destroyed */
0, /* todo_flags_start */
TODO_dump_func | TODO_verify_loops
- | TODO_update_ssa | TODO_ggc_collect, /* todo_flags_finish */
- 0 /* letter */
+ | TODO_update_ssa | TODO_ggc_collect /* todo_flags_finish */
+ }
};
/* Loop optimizer finalization. */
return 0;
}
-struct tree_opt_pass pass_tree_loop_done =
+struct gimple_opt_pass pass_tree_loop_done =
{
+ {
+ GIMPLE_PASS,
"loopdone", /* name */
NULL, /* gate */
tree_ssa_loop_done, /* execute */
0, /* properties_provided */
0, /* properties_destroyed */
0, /* todo_flags_start */
- TODO_cleanup_cfg | TODO_dump_func, /* todo_flags_finish */
- 0 /* letter */
+ TODO_cleanup_cfg | TODO_dump_func /* todo_flags_finish */
+ }
};
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