diff options
Diffstat (limited to 'gcc/sched-rgn.c')
| -rw-r--r-- | gcc/sched-rgn.c | 39 |
1 files changed, 38 insertions, 1 deletions
diff --git a/gcc/sched-rgn.c b/gcc/sched-rgn.c index 5d39a36..ba85238 100644 --- a/gcc/sched-rgn.c +++ b/gcc/sched-rgn.c @@ -124,6 +124,9 @@ int current_blocks; static basic_block *bblst_table; static int bblst_size, bblst_last; +static char *bb_state_array; +static state_t *bb_state; + /* Target info declarations. The block currently being scheduled is referred to as the "target" block, @@ -2982,9 +2985,21 @@ schedule_region (int rgn) curr_bb = first_bb; if (dbg_cnt (sched_block)) { - schedule_block (&curr_bb); + edge f; + + schedule_block (&curr_bb, bb_state[first_bb->index]); gcc_assert (EBB_FIRST_BB (bb) == first_bb); sched_rgn_n_insns += sched_n_insns; + f = find_fallthru_edge (last_bb->succs); + if (f && f->probability * 100 / REG_BR_PROB_BASE >= + PARAM_VALUE (PARAM_SCHED_STATE_EDGE_PROB_CUTOFF)) + { + memcpy (bb_state[f->dest->index], curr_state, + dfa_state_size); + if (sched_verbose >= 5) + fprintf (sched_dump, "saving state for edge %d->%d\n", + f->src->index, f->dest->index); + } } else { @@ -3017,6 +3032,8 @@ schedule_region (int rgn) void sched_rgn_init (bool single_blocks_p) { + int i; + min_spec_prob = ((PARAM_VALUE (PARAM_MIN_SPEC_PROB) * REG_BR_PROB_BASE) / 100); @@ -3028,6 +3045,23 @@ sched_rgn_init (bool single_blocks_p) CONTAINING_RGN (ENTRY_BLOCK) = -1; CONTAINING_RGN (EXIT_BLOCK) = -1; + if (!sel_sched_p ()) + { + bb_state_array = (char *) xmalloc (last_basic_block * dfa_state_size); + bb_state = XNEWVEC (state_t, last_basic_block); + for (i = 0; i < last_basic_block; i++) + { + bb_state[i] = (state_t) (bb_state_array + i * dfa_state_size); + + state_reset (bb_state[i]); + } + } + else + { + bb_state_array = NULL; + bb_state = NULL; + } + /* Compute regions for scheduling. */ if (single_blocks_p || n_basic_blocks == NUM_FIXED_BLOCKS + 1 @@ -3064,6 +3098,9 @@ sched_rgn_init (bool single_blocks_p) void sched_rgn_finish (void) { + free (bb_state_array); + free (bb_state); + /* Reposition the prologue and epilogue notes in case we moved the prologue/epilogue insns. */ if (reload_completed) |