check that it is not called too late in the game.
(gate_estimate_probability): New gate.
(pass_profile): Gate.
* tree-mudflap.c (mf_build_check_statement_for): Do not drop
predictions; update CFG instead.
* cfgrtl.c (rtl_verify_flow_info): Check that predcitions are consumed.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@100662
138bc75d-0d04-0410-961f-
82ee72b054a4
+2005-06-06 Jan Hubicka <jh@suse.cz>
+
+ * predict.c (tree_predict_edge): Don't drop useless predictions;
+ check that it is not called too late in the game.
+ (gate_estimate_probability): New gate.
+ (pass_profile): Gate.
+ * tree-mudflap.c (mf_build_check_statement_for): Do not drop
+ predictions; update CFG instead.
+ * cfgrtl.c (rtl_verify_flow_info): Check that predcitions are consumed.
+
2005-06-06 Jie Zhang <jie.zhang@analog.com>
* config.gcc (bfin*-uclinux*): New.
edge e;
edge_iterator ei;
+ if (bb->predictions)
+ {
+ error ("bb prediction set for block %i, but it is not used in RTL land", bb->index);
+ err = 1;
+ }
+
FOR_EACH_EDGE (e, ei, bb->succs)
if (e->flags & EDGE_FALLTHRU)
break;
void
tree_predict_edge (edge e, enum br_predictor predictor, int probability)
{
+ gcc_assert (profile_status != PROFILE_GUESSED);
if ((e->src != ENTRY_BLOCK_PTR && EDGE_COUNT (e->src->succs) > 1)
- && flag_guess_branch_prob)
+ && flag_guess_branch_prob && optimize)
{
struct edge_prediction *i = ggc_alloc (sizeof (struct edge_prediction));
UNLIKELY_EXECUTED_TEXT_SECTION_NAME);
}
+static bool
+gate_estimate_probability (void)
+{
+ return flag_guess_branch_prob;
+}
struct tree_opt_pass pass_profile =
{
"profile", /* name */
- NULL, /* gate */
+ gate_estimate_probability, /* gate */
tree_estimate_probability, /* execute */
NULL, /* sub */
NULL, /* next */
make_edge (cond_bb, then_bb, EDGE_TRUE_VALUE);
make_single_succ_edge (then_bb, join_bb, EDGE_FALLTHRU);
- /* We expect that the conditional jump we will construct will not
- be taken very often as it basically is an exception condition. */
- predict_edge_def (single_pred_edge (then_bb), PRED_MUDFLAP, NOT_TAKEN);
-
/* Mark the pseudo-fallthrough edge from cond_bb to join_bb. */
e = find_edge (cond_bb, join_bb);
e->flags = EDGE_FALSE_VALUE;
- predict_edge_def (e, PRED_MUDFLAP, TAKEN);
+ e->count = cond_bb->count;
+ e->probability = REG_BR_PROB_BASE;
/* Update dominance info. Note that bb_join's data was
updated by split_block. */