Daily bump.

[pf3gnuchains/gcc-fork.git] / gcc / basic-block.h

diff --git a/gcc/basic-block.h b/gcc/basic-block.h
index 692ebe6..3594eea 100644 (file)
--- a/gcc/basic-block.h
+++ b/gcc/basic-block.h
@@ -99,7 +99,6 @@ extern const struct gcov_ctr_summary *profile_info;
 struct loop;
 
 /* Declared in tree-flow.h.  */
-struct edge_prediction;
 struct rtl_bb_info;
 
 /* A basic block is a sequence of instructions with only entry and
@@ -246,7 +245,13 @@ enum bb_flags
 
   /* Set on blocks that cannot be threaded through.
      Only used in cfgcleanup.c.  */
-  BB_NONTHREADABLE_BLOCK = 1 << 11
+  BB_NONTHREADABLE_BLOCK = 1 << 11,
+
+  /* Set on blocks that were modified in some way.  This bit is set in
+     df_set_bb_dirty, but not cleared by df_analyze, so it can be used
+     to test whether a block has been modified prior to a df_analyze
+     call.  */
+  BB_MODIFIED = 1 << 12
 };
 
 /* Dummy flag for convenience in the hot/cold partitioning code.  */
@@ -554,9 +559,7 @@ single_pred_p (const_basic_block bb)
 static inline edge
 single_succ_edge (const_basic_block bb)
 {
-#ifdef ENABLE_CHECKING
-  gcc_assert (single_succ_p (bb));
-#endif
+  gcc_checking_assert (single_succ_p (bb));
   return EDGE_SUCC (bb, 0);
 }
 
@@ -566,9 +569,7 @@ single_succ_edge (const_basic_block bb)
 static inline edge
 single_pred_edge (const_basic_block bb)
 {
-#ifdef ENABLE_CHECKING
-  gcc_assert (single_pred_p (bb));
-#endif
+  gcc_checking_assert (single_pred_p (bb));
   return EDGE_PRED (bb, 0);
 }
 
@@ -600,9 +601,7 @@ typedef struct {
 static inline VEC(edge,gc) *
 ei_container (edge_iterator i)
 {
-#ifdef ENABLE_CHECKING
-  gcc_assert (i.container);
-#endif
+  gcc_checking_assert (i.container);
   return *i.container;
 }
 
@@ -653,9 +652,7 @@ ei_one_before_end_p (edge_iterator i)
 static inline void
 ei_next (edge_iterator *i)
 {
-#ifdef ENABLE_CHECKING
-  gcc_assert (i->index < EDGE_COUNT (ei_container (*i)));
-#endif
+  gcc_checking_assert (i->index < EDGE_COUNT (ei_container (*i)));
   i->index++;
 }
 
@@ -663,9 +660,7 @@ ei_next (edge_iterator *i)
 static inline void
 ei_prev (edge_iterator *i)
 {
-#ifdef ENABLE_CHECKING
-  gcc_assert (i->index > 0);
-#endif
+  gcc_checking_assert (i->index > 0);
   i->index--;
 }
 
@@ -885,9 +880,6 @@ extern basic_block get_bb_copy (basic_block);
 void set_loop_copy (struct loop *, struct loop *);
 struct loop *get_loop_copy (struct loop *);
 
-
-extern rtx insert_insn_end_bb_new (rtx, basic_block);
-
 #include "cfghooks.h"
 
 /* Return true when one of the predecessor edges of BB is marked with EDGE_EH.  */
@@ -920,6 +912,20 @@ bb_has_abnormal_pred (basic_block bb)
   return false;
 }
 
+/* Return the fallthru edge in EDGES if it exists, NULL otherwise.  */
+static inline edge
+find_fallthru_edge (VEC(edge,gc) *edges)
+{
+  edge e;
+  edge_iterator ei;
+
+  FOR_EACH_EDGE (e, ei, edges)
+    if (e->flags & EDGE_FALLTHRU)
+      break;
+
+  return e;
+}
+
 /* In cfgloopmanip.c.  */
 extern edge mfb_kj_edge;
 extern bool mfb_keep_just (edge);