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Diffstat (limited to 'gcc-4.2.1-5666.3/gcc/tree-ssa-loop.c')
| -rw-r--r-- | gcc-4.2.1-5666.3/gcc/tree-ssa-loop.c | 511 |
1 files changed, 0 insertions, 511 deletions
diff --git a/gcc-4.2.1-5666.3/gcc/tree-ssa-loop.c b/gcc-4.2.1-5666.3/gcc/tree-ssa-loop.c deleted file mode 100644 index 475f31e3b..000000000 --- a/gcc-4.2.1-5666.3/gcc/tree-ssa-loop.c +++ /dev/null @@ -1,511 +0,0 @@ -/* Loop optimizations over tree-ssa. - Copyright (C) 2003, 2005 Free Software Foundation, Inc. - -This file is part of GCC. - -GCC is free software; you can redistribute it and/or modify it -under the terms of the GNU General Public License as published by the -Free Software Foundation; either version 2, or (at your option) any -later version. - -GCC is distributed in the hope that it will be useful, but WITHOUT -ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or -FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License -for more details. - -You should have received a copy of the GNU General Public License -along with GCC; see the file COPYING. If not, write to the Free -Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA -02110-1301, USA. */ - -#include "config.h" -#include "system.h" -#include "coretypes.h" -#include "tm.h" -#include "tree.h" -#include "rtl.h" -#include "tm_p.h" -#include "hard-reg-set.h" -#include "basic-block.h" -#include "output.h" -#include "diagnostic.h" -#include "tree-flow.h" -#include "tree-dump.h" -#include "tree-pass.h" -#include "timevar.h" -#include "cfgloop.h" -#include "flags.h" -#include "tree-inline.h" -#include "tree-scalar-evolution.h" - -/* The loop tree currently optimized. */ - -struct loops *current_loops = NULL; - -/* Initializes the loop structures. */ - -static struct loops * -tree_loop_optimizer_init (void) -{ - struct loops *loops; - - loops = loop_optimizer_init (LOOPS_NORMAL - | LOOPS_HAVE_MARKED_SINGLE_EXITS); - - if (!loops) - return NULL; - - rewrite_into_loop_closed_ssa (NULL, TODO_update_ssa); - - return loops; -} - -/* The loop superpass. */ - -static bool -gate_tree_loop (void) -{ - return flag_tree_loop_optimize != 0; -} - -struct tree_opt_pass pass_tree_loop = -{ - "loop", /* name */ - gate_tree_loop, /* gate */ - NULL, /* execute */ - NULL, /* sub */ - NULL, /* next */ - 0, /* static_pass_number */ - TV_TREE_LOOP, /* tv_id */ - PROP_cfg, /* properties_required */ - 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 */ -}; - -/* Loop optimizer initialization. */ - -static unsigned int -tree_ssa_loop_init (void) -{ - current_loops = tree_loop_optimizer_init (); - if (!current_loops) - return 0; - - scev_initialize (current_loops); - return 0; -} - -struct tree_opt_pass pass_tree_loop_init = -{ - "loopinit", /* name */ - NULL, /* gate */ - tree_ssa_loop_init, /* execute */ - NULL, /* sub */ - NULL, /* next */ - 0, /* static_pass_number */ - TV_TREE_LOOP_INIT, /* tv_id */ - PROP_cfg, /* properties_required */ - 0, /* properties_provided */ - 0, /* properties_destroyed */ - 0, /* todo_flags_start */ - TODO_dump_func | TODO_verify_loops, /* todo_flags_finish */ - 0 /* letter */ -}; - -/* Loop invariant motion pass. */ - -static unsigned int -tree_ssa_loop_im (void) -{ - if (!current_loops) - return 0; - - tree_ssa_lim (current_loops); - return 0; -} - -static bool -gate_tree_ssa_loop_im (void) -{ - return flag_tree_loop_im != 0; -} - -struct tree_opt_pass pass_lim = -{ - "lim", /* name */ - gate_tree_ssa_loop_im, /* gate */ - tree_ssa_loop_im, /* execute */ - NULL, /* sub */ - NULL, /* next */ - 0, /* static_pass_number */ - TV_LIM, /* tv_id */ - PROP_cfg, /* properties_required */ - 0, /* properties_provided */ - 0, /* properties_destroyed */ - 0, /* todo_flags_start */ - TODO_dump_func | TODO_verify_loops, /* todo_flags_finish */ - 0 /* letter */ -}; - -/* Loop unswitching pass. */ - -static unsigned int -tree_ssa_loop_unswitch (void) -{ - if (!current_loops) - return 0; - - return tree_ssa_unswitch_loops (current_loops); -} - -static bool -gate_tree_ssa_loop_unswitch (void) -{ - return flag_unswitch_loops != 0; -} - -struct tree_opt_pass pass_tree_unswitch = -{ - "unswitch", /* name */ - gate_tree_ssa_loop_unswitch, /* gate */ - tree_ssa_loop_unswitch, /* execute */ - NULL, /* sub */ - NULL, /* next */ - 0, /* static_pass_number */ - TV_TREE_LOOP_UNSWITCH, /* tv_id */ - PROP_cfg, /* properties_required */ - 0, /* properties_provided */ - 0, /* properties_destroyed */ - 0, /* todo_flags_start */ - TODO_dump_func | TODO_verify_loops, /* todo_flags_finish */ - 0 /* letter */ -}; - -/* Loop autovectorization. */ - -static unsigned int -tree_vectorize (void) -{ - vectorize_loops (current_loops); - return 0; -} - -static bool -gate_tree_vectorize (void) -{ - return flag_tree_vectorize && current_loops; -} - -struct tree_opt_pass pass_vectorize = -{ - "vect", /* name */ - gate_tree_vectorize, /* gate */ - tree_vectorize, /* execute */ - NULL, /* sub */ - NULL, /* next */ - 0, /* static_pass_number */ - TV_TREE_VECTORIZATION, /* tv_id */ - PROP_cfg | PROP_ssa, /* properties_required */ - 0, /* properties_provided */ - 0, /* properties_destroyed */ - TODO_verify_loops, /* todo_flags_start */ - TODO_dump_func | TODO_update_ssa, /* todo_flags_finish */ - 0 /* letter */ -}; - -/* Loop nest optimizations. */ - -static unsigned int -tree_linear_transform (void) -{ - if (!current_loops) - return 0; - - linear_transform_loops (current_loops); - return 0; -} - -static bool -gate_tree_linear_transform (void) -{ - return flag_tree_loop_linear != 0; -} - -struct tree_opt_pass pass_linear_transform = -{ - "ltrans", /* name */ - gate_tree_linear_transform, /* gate */ - tree_linear_transform, /* execute */ - NULL, /* sub */ - NULL, /* next */ - 0, /* static_pass_number */ - TV_TREE_LINEAR_TRANSFORM, /* 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 */ - 0 /* letter */ -}; - -/* Canonical induction variable creation pass. */ - -static unsigned int -tree_ssa_loop_ivcanon (void) -{ - if (!current_loops) - return 0; - - return canonicalize_induction_variables (current_loops); -} - -static bool -gate_tree_ssa_loop_ivcanon (void) -{ - return flag_tree_loop_ivcanon != 0; -} - -struct tree_opt_pass pass_iv_canon = -{ - "ivcanon", /* name */ - gate_tree_ssa_loop_ivcanon, /* gate */ - tree_ssa_loop_ivcanon, /* execute */ - NULL, /* sub */ - NULL, /* next */ - 0, /* static_pass_number */ - TV_TREE_LOOP_IVCANON, /* 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 */ - 0 /* letter */ -}; - -/* Propagation of constants using scev. */ - -static bool -gate_scev_const_prop (void) -{ - return true; -} - -struct tree_opt_pass pass_scev_cprop = -{ - "sccp", /* name */ - gate_scev_const_prop, /* gate */ - scev_const_prop, /* execute */ - NULL, /* sub */ - NULL, /* next */ - 0, /* static_pass_number */ - TV_SCEV_CONST, /* tv_id */ - PROP_cfg | PROP_ssa, /* properties_required */ - 0, /* properties_provided */ - 0, /* properties_destroyed */ - 0, /* todo_flags_start */ - TODO_dump_func | TODO_cleanup_cfg - | TODO_update_ssa_only_virtuals, - /* todo_flags_finish */ - 0 /* letter */ -}; - -/* Remove empty loops. */ - -static unsigned int -tree_ssa_empty_loop (void) -{ - if (!current_loops) - return 0; - - return remove_empty_loops (current_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_flags_finish */ - 0 /* letter */ -}; - -/* Record bounds on numbers of iterations of loops. */ - -static unsigned int -tree_ssa_loop_bounds (void) -{ - if (!current_loops) - return 0; - - estimate_numbers_of_iterations (current_loops); - scev_reset (); - return 0; -} - -struct tree_opt_pass pass_record_bounds = -{ - NULL, /* name */ - NULL, /* gate */ - tree_ssa_loop_bounds, /* execute */ - NULL, /* sub */ - NULL, /* next */ - 0, /* static_pass_number */ - TV_TREE_LOOP_BOUNDS, /* tv_id */ - PROP_cfg | PROP_ssa, /* properties_required */ - 0, /* properties_provided */ - 0, /* properties_destroyed */ - 0, /* todo_flags_start */ - 0, /* todo_flags_finish */ - 0 /* letter */ -}; - -/* Complete unrolling of loops. */ - -static unsigned int -tree_complete_unroll (void) -{ - if (!current_loops) - return 0; - - return tree_unroll_loops_completely (current_loops, - flag_unroll_loops - || flag_peel_loops - || optimize >= 3); -} - -static bool -gate_tree_complete_unroll (void) -{ - return true; -} - -struct tree_opt_pass pass_complete_unroll = -{ - "cunroll", /* name */ - gate_tree_complete_unroll, /* gate */ - tree_complete_unroll, /* 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_flags_finish */ - 0 /* letter */ -}; - -/* Prefetching. */ - -static unsigned int -tree_ssa_loop_prefetch (void) -{ - if (!current_loops) - return 0; - - return tree_ssa_prefetch_arrays (current_loops); -} - -static bool -gate_tree_ssa_loop_prefetch (void) -{ - return flag_prefetch_loop_arrays != 0; -} - -struct tree_opt_pass pass_loop_prefetch = -{ - "prefetch", /* name */ - gate_tree_ssa_loop_prefetch, /* gate */ - tree_ssa_loop_prefetch, /* execute */ - NULL, /* sub */ - NULL, /* next */ - 0, /* static_pass_number */ - TV_TREE_PREFETCH, /* 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 */ - 0 /* letter */ -}; - -/* Induction variable optimizations. */ - -static unsigned int -tree_ssa_loop_ivopts (void) -{ - if (!current_loops) - return 0; - - tree_ssa_iv_optimize (current_loops); - return 0; -} - -static bool -gate_tree_ssa_loop_ivopts (void) -{ - return flag_ivopts != 0; -} - -struct tree_opt_pass pass_iv_optimize = -{ - "ivopts", /* name */ - gate_tree_ssa_loop_ivopts, /* gate */ - tree_ssa_loop_ivopts, /* execute */ - NULL, /* sub */ - NULL, /* next */ - 0, /* static_pass_number */ - TV_TREE_LOOP_IVOPTS, /* 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_update_ssa, /* todo_flags_finish */ - 0 /* letter */ -}; - -/* Loop optimizer finalization. */ - -static unsigned int -tree_ssa_loop_done (void) -{ - if (!current_loops) - return 0; - - free_numbers_of_iterations_estimates (current_loops); - scev_finalize (); - loop_optimizer_finalize (current_loops); - current_loops = NULL; - return 0; -} - -struct tree_opt_pass pass_tree_loop_done = -{ - "loopdone", /* name */ - NULL, /* gate */ - tree_ssa_loop_done, /* execute */ - NULL, /* sub */ - NULL, /* next */ - 0, /* static_pass_number */ - TV_TREE_LOOP_FINI, /* tv_id */ - PROP_cfg, /* properties_required */ - 0, /* properties_provided */ - 0, /* properties_destroyed */ - 0, /* todo_flags_start */ - TODO_cleanup_cfg | TODO_dump_func, /* todo_flags_finish */ - 0 /* letter */ -}; |