+2001-02-04 Bernd Schmidt <bernds@redhat.com>
+
+ * cfgrtl.c (force_nonfallthru_and_redirect): Don't try to redirect
+ the entry block.
+
2002-02-04 Richard Henderson <rth@redhat.com>
* combine.c (force_to_mode): Remove STACK_BIAS code.
abort ();
else if (!(e->flags & EDGE_FALLTHRU))
abort ();
- else if (e->src->succ->succ_next)
+ else if (e->src == ENTRY_BLOCK_PTR)
+ {
+ /* We can't redirect the entry block. Create an empty block at the
+ start of the function which we use to add the new jump. */
+ edge *pe1;
+ basic_block bb = create_basic_block (0, e->dest->head, NULL);
+
+ /* Change the existing edge's source to be the new block, and add
+ a new edge from the entry block to the new block. */
+ e->src = bb;
+ for (pe1 = &ENTRY_BLOCK_PTR->succ; *pe1; pe1 = &(*pe1)->succ_next)
+ if (*pe1 == e)
+ {
+ *pe1 = e->succ_next;
+ break;
+ }
+ e->succ_next = 0;
+ bb->succ = e;
+ make_single_succ_edge (ENTRY_BLOCK_PTR, bb, EDGE_FALLTHRU);
+ }
+
+ if (e->src->succ->succ_next)
{
/* Create the new structures. */
note = last_loop_beg_note (e->src->end);