1 files changed, 0 insertions, 78 deletions
diff --git a/gcc/tree-cfg.c b/gcc/tree-cfg.c
index 33c8325..621ea57 100644
--- a/gcc/tree-cfg.c
+++ b/gcc/tree-cfg.c
@@ -2171,84 +2171,6 @@ phi_alternatives_equal (basic_block dest, edge e1, edge e2)
 }
 
 
-/* Computing the Dominance Frontier:
-
-   As described in Morgan, section 3.5, this may be done simply by
-   walking the dominator tree bottom-up, computing the frontier for
-   the children before the parent.  When considering a block B,
-   there are two cases:
-
-   (1) A flow graph edge leaving B that does not lead to a child
-   of B in the dominator tree must be a block that is either equal
-   to B or not dominated by B.  Such blocks belong in the frontier
-   of B.
-
-   (2) Consider a block X in the frontier of one of the children C
-   of B.  If X is not equal to B and is not dominated by B, it
-   is in the frontier of B.  */
-
-static void
-compute_dominance_frontiers_1 (bitmap *frontiers, basic_block bb, sbitmap done)
-{
-  edge e;
-  basic_block c;
-
-  SET_BIT (done, bb->index);
-
-  /* Do the frontier of the children first.  Not all children in the
-     dominator tree (blocks dominated by this one) are children in the
-     CFG, so check all blocks.  */
-  for (c = first_dom_son (CDI_DOMINATORS, bb);
-       c;
-       c = next_dom_son (CDI_DOMINATORS, c))
-    {
-      if (! TEST_BIT (done, c->index))
-    	compute_dominance_frontiers_1 (frontiers, c, done);
-    }
-      
-  /* Find blocks conforming to rule (1) above.  */
-  for (e = bb->succ; e; e = e->succ_next)
-    {
-      if (e->dest == EXIT_BLOCK_PTR)
-	continue;
-      if (get_immediate_dominator (CDI_DOMINATORS, e->dest) != bb)
-	bitmap_set_bit (frontiers[bb->index], e->dest->index);
-    }
-
-  /* Find blocks conforming to rule (2).  */
-  for (c = first_dom_son (CDI_DOMINATORS, bb);
-       c;
-       c = next_dom_son (CDI_DOMINATORS, c))
-    {
-      int x;
-
-      EXECUTE_IF_SET_IN_BITMAP (frontiers[c->index], 0, x,
-	{
-	  if (get_immediate_dominator (CDI_DOMINATORS, BASIC_BLOCK (x)) != bb)
-	    bitmap_set_bit (frontiers[bb->index], x);
-	});
-    }
-}
-
-
-void
-compute_dominance_frontiers (bitmap *frontiers)
-{
-  sbitmap done = sbitmap_alloc (last_basic_block);
-
-  timevar_push (TV_DOM_FRONTIERS);
-
-  sbitmap_zero (done);
-
-  compute_dominance_frontiers_1 (frontiers, ENTRY_BLOCK_PTR->succ->dest, done);
-
-  sbitmap_free (done);
-
-  timevar_pop (TV_DOM_FRONTIERS);
-}
-
-
-
 /*---------------------------------------------------------------------------
 			      Debugging functions
 ---------------------------------------------------------------------------*/