#include "basic-block.h"
#include "output.h"
#include "diagnostic.h"
-#include "basic-block.h"
#include "tree-flow.h"
#include "tree-dump.h"
#include "tree-pass.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;
+
+/* Initializes the loop structures. DUMP is the file to that the details
+ about the analysis should be dumped. */
+
+static struct loops *
+tree_loop_optimizer_init (FILE *dump)
+{
+ struct loops *loops = loop_optimizer_init (dump);
+
+ if (!loops)
+ return NULL;
+
+ /* Creation of preheaders may create redundant phi nodes if the loop is
+ entered by more than one edge, but the initial value of the induction
+ variable is the same on all of them. */
+ kill_redundant_phi_nodes ();
+ rewrite_into_ssa (false);
+ bitmap_clear (vars_to_rename);
+
+ rewrite_into_loop_closed_ssa ();
+#ifdef ENABLE_CHECKING
+ verify_loop_closed_ssa ();
+#endif
+
+ return loops;
+}
+
+/* The loop superpass. */
+
+static bool
+gate_loop (void)
+{
+ return flag_tree_loop_optimize != 0;
+}
+
+struct tree_opt_pass pass_loop =
+{
+ "loop", /* name */
+ gate_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 */
+};
+
+/* Loop optimizer initialization. */
+
+static void
+tree_ssa_loop_init (void)
+{
+ current_loops = tree_loop_optimizer_init (dump_file);
+ if (!current_loops)
+ return;
+
+ /* Find the loops that are exited just through a single edge. */
+ mark_single_exit_loops (current_loops);
+
+ scev_initialize (current_loops);
+}
+
+struct tree_opt_pass pass_loop_init =
+{
+ "loopinit", /* name */
+ NULL, /* gate */
+ tree_ssa_loop_init, /* execute */
+ NULL, /* sub */
+ NULL, /* next */
+ 0, /* static_pass_number */
+ 0, /* tv_id */
+ PROP_cfg, /* properties_required */
+ 0, /* properties_provided */
+ 0, /* properties_destroyed */
+ 0, /* todo_flags_start */
+ TODO_dump_func /* todo_flags_finish */
+};
+
+/* Loop invariant motion pass. */
+
+static void
+tree_ssa_loop_im (void)
+{
+ if (!current_loops)
+ return;
+
+ tree_ssa_lim (current_loops);
+}
+
+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_flags_finish */
+};
+
+/* Loop autovectorization. */
+
+static void
+tree_vectorize (void)
+{
+ if (!current_loops)
+ return;
+
+ bitmap_clear (vars_to_rename);
+ vectorize_loops (current_loops);
+}
+
+static bool
+gate_tree_vectorize (void)
+{
+ return flag_tree_vectorize != 0;
+}
+
+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 */
+ 0, /* todo_flags_start */
+ TODO_dump_func /* todo_flags_finish */
+};
+
+/* Canonical induction variable creation pass. */
+
+static void
+tree_ssa_loop_ivcanon (void)
+{
+ if (!current_loops)
+ 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_flags_finish */
+};
+
+/* Complete unrolling of loops. */
+
+static void
+tree_complete_unroll (void)
+{
+ if (!current_loops)
+ return;
+
+ tree_unroll_loops_completely (current_loops);
+}
+
+static bool
+gate_tree_complete_unroll (void)
+{
+ return flag_unroll_loops != 0;
+}
+
+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_flags_finish */
+};
+
+/* Induction variable optimizations. */
+
+static void
+tree_ssa_loop_ivopts (void)
+{
+ if (!current_loops)
+ return;
+
+ tree_ssa_iv_optimize (current_loops);
+}
+
+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_flags_finish */
+};
+
+/* Loop optimizer finalization. */
+
+static void
+tree_ssa_loop_done (void)
+{
+ if (!current_loops)
+ return;
+
+#ifdef ENABLE_CHECKING
+ verify_loop_closed_ssa ();
+#endif
+ free_numbers_of_iterations_estimates (current_loops);
+ scev_finalize ();
+ loop_optimizer_finalize (current_loops,
+ (dump_flags & TDF_DETAILS ? dump_file : NULL));
+ current_loops = NULL;
+ cleanup_tree_cfg ();
+}
+
+struct tree_opt_pass pass_loop_done =
+{
+ "loopdone", /* name */
+ NULL, /* gate */
+ tree_ssa_loop_done, /* execute */
+ NULL, /* sub */
+ NULL, /* next */
+ 0, /* static_pass_number */
+ 0, /* tv_id */
+ PROP_cfg, /* properties_required */
+ 0, /* properties_provided */
+ 0, /* properties_destroyed */
+ 0, /* todo_flags_start */
+ TODO_dump_func /* todo_flags_finish */
+};