* cfghooks.c (split_edge): Update IRREDUCIBLE_LOOP flags.
* cfgloopmanip.c (loop_split_edge_with): Updating of IRREDUCIBLE_LOOP
flags moved to split_edge.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@88665
138bc75d-0d04-0410-961f-
82ee72b054a4
+2004-10-07 Zdenek Dvorak <dvorakz@suse.cz>
+
+ PR tree-optimization/17806
+ * cfghooks.c (split_edge): Update IRREDUCIBLE_LOOP flags.
+ * cfgloopmanip.c (loop_split_edge_with): Updating of IRREDUCIBLE_LOOP
+ flags moved to split_edge.
+
2004-10-07 Eric Botcazou <ebotcazou@libertysurf.fr>
PR middle-end/17285
gcov_type count = e->count;
int freq = EDGE_FREQUENCY (e);
edge f;
+ bool irr = (e->flags & EDGE_IRREDUCIBLE_LOOP) != 0;
if (!cfg_hooks->split_edge)
internal_error ("%s does not support split_edge.", cfg_hooks->name);
EDGE_SUCC (ret, 0)->probability = REG_BR_PROB_BASE;
EDGE_SUCC (ret, 0)->count = count;
+ if (irr)
+ {
+ ret->flags |= BB_IRREDUCIBLE_LOOP;
+ EDGE_PRED (ret, 0)->flags |= EDGE_IRREDUCIBLE_LOOP;
+ EDGE_SUCC (ret, 0)->flags |= EDGE_IRREDUCIBLE_LOOP;
+ }
+
if (dom_computed[CDI_DOMINATORS])
set_immediate_dominator (CDI_DOMINATORS, ret, EDGE_PRED (ret, 0)->src);
{
basic_block src, dest, new_bb;
struct loop *loop_c;
- edge new_e;
src = e->src;
dest = e->dest;
new_bb = split_edge (e);
add_bb_to_loop (new_bb, loop_c);
- new_bb->flags = insns ? BB_SUPERBLOCK : 0;
-
- new_e = EDGE_SUCC (new_bb, 0);
- if (e->flags & EDGE_IRREDUCIBLE_LOOP)
- {
- new_bb->flags |= BB_IRREDUCIBLE_LOOP;
- new_e->flags |= EDGE_IRREDUCIBLE_LOOP;
- }
+ new_bb->flags |= (insns ? BB_SUPERBLOCK : 0);
if (insns)
emit_insn_after (insns, BB_END (new_bb));