http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55158
--- Comment #5 from Steven Bosscher <steven at gcc dot gnu.org> 2012-11-07
21:19:42 UTC ---
Completely untested patch for someone else to foster-parent:
--- sched-rgn.c 2012-11-04 14:48:19.110019609 -0800
+++ sched-rgn.c 2012-11-07 13:17:06.740019608 -0800
@@ -2986,10 +2986,23 @@
if (dbg_cnt (sched_block))
{
edge f;
+ int saved_last_basic_block = last_basic_block;
schedule_block (&curr_bb, bb_state[first_bb->index]);
gcc_assert (EBB_FIRST_BB (bb) == first_bb);
sched_rgn_n_insns += sched_n_insns;
+ if (last_basic_block > saved_last_basic_block)
+ {
+ /* New basic blocks have been created, probably for
+ speculation recovery code. Fixup the state array. */
+ bb_state_array = (char *) xrealloc (last_basic_block *
dfa_state_size);
+ bb_state = XRESIZEVEC (state_t, bb_state, last_basic_block);
+ for (int i = saved_last_basic_block; i < last_basic_block; i++)
+ {
+ bb_state[i] = (state_t) (bb_state_array + i *
dfa_state_size);
+ state_reset (bb_state[i]);
+ }
+ }
f = find_fallthru_edge (last_bb->succs);
if (f && f->probability * 100 / REG_BR_PROB_BASE >=
PARAM_VALUE (PARAM_SCHED_STATE_EDGE_PROB_CUTOFF))
