Profile housekeeping 2/n (shrink wrapping fix)

[Jan Hubicka]

Hi,
this patch fixes updating in shrink wrapping.  Bootstrapped/regtested 
x86_64-linux.
Will commit it shortly.

Honza

        * function.c (dup_block_and_redirect): Update profile.
Index: function.c
===================================================================
--- function.c  (revision 191823)
+++ function.c  (working copy)
@@ -5668,6 +5668,15 @@ dup_block_and_redirect (basic_block bb,
   for (ei = ei_start (bb->preds); (e = ei_safe_edge (ei)); )
     if (!bitmap_bit_p (need_prologue, e->src->index))
       {
+       int freq = EDGE_FREQUENCY (e);
+       copy_bb->count += e->count;
+       copy_bb->frequency += EDGE_FREQUENCY (e);
+       e->dest->count -= e->count;
+       if (e->dest->count < 0)
+         e->dest->count = 0;
+       e->dest->frequency -= freq;
+       if (e->dest->frequency < 0)
+         e->dest->frequency = 0;
        redirect_edge_and_branch_force (e, copy_bb);
        continue;
       }