Split BB_HEAD et al into BB_HEAD/SET_BB_HEAD variants

gcc/
2014-08-18  David Malcolm  <dmalcolm@redhat.com>

	* basic-block.h (BB_HEAD): Split macro in two: the existing one,
	for rvalues, and...
	(SET_BB_HEAD): New macro, for use as a lvalue.
	(BB_END, SET_BB_END): Likewise.
	(BB_HEADER, SET_BB_HEADER): Likewise.
	(BB_FOOTER, SET_BB_FOOTER): Likewise.

	* bb-reorder.c (add_labels_and_missing_jumps): Convert lvalue use
	of BB_* macros into SET_BB_* macros.
	(fix_crossing_unconditional_branches): Likewise.
	* caller-save.c (save_call_clobbered_regs): Likewise.
	(insert_one_insn): Likewise.
	* cfgbuild.c (find_bb_boundaries): Likewise.
	* cfgcleanup.c (merge_blocks_move_successor_nojumps): Likewise.
	(outgoing_edges_match): Likewise.
	(try_optimize_cfg): Likewise.
	* cfgexpand.c (expand_gimple_cond): Likewise.
	(expand_gimple_tailcall): Likewise.
	(expand_gimple_basic_block): Likewise.
	(construct_exit_block): Likewise.
	* cfgrtl.c (delete_insn): Likewise.
	(create_basic_block_structure): Likewise.
	(rtl_delete_block): Likewise.
	(rtl_split_block): Likewise.
	(emit_nop_for_unique_locus_between): Likewise.
	(rtl_merge_blocks): Likewise.
	(block_label): Likewise.
	(try_redirect_by_replacing_jump): Likewise.
	(emit_barrier_after_bb): Likewise.
	(fixup_abnormal_edges): Likewise.
	(record_effective_endpoints): Likewise.
	(relink_block_chain): Likewise.
	(fixup_reorder_chain): Likewise.
	(fixup_fallthru_exit_predecessor): Likewise.
	(cfg_layout_duplicate_bb): Likewise.
	(cfg_layout_split_block): Likewise.
	(cfg_layout_delete_block): Likewise.
	(cfg_layout_merge_blocks): Likewise.
	* combine.c (update_cfg_for_uncondjump): Likewise.
	* emit-rtl.c (add_insn_after): Likewise.
	(remove_insn): Likewise.
	(reorder_insns): Likewise.
	(emit_insn_after_1): Likewise.
	* haifa-sched.c (get_ebb_head_tail): Likewise.
	(restore_other_notes): Likewise.
	(move_insn): Likewise.
	(sched_extend_bb): Likewise.
	(fix_jump_move): Likewise.
	* ifcvt.c (noce_process_if_block): Likewise.
	(dead_or_predicable): Likewise.
	* ira.c (update_equiv_regs): Likewise.
	* reg-stack.c (change_stack): Likewise.
	* sel-sched-ir.c (sel_move_insn): Likewise.
	* sel-sched.c (move_nop_to_previous_block): Likewise.

	* config/c6x/c6x.c (hwloop_optimize): Likewise.
	* config/ia64/ia64.c (emit_predicate_relation_info): Likewise.

/
2014-08-18  David Malcolm  <dmalcolm@redhat.com>

	* rtx-classes-status.txt (TODO): Add SET_BB_HEAD, SET_BB_END,
	SET_BB_HEADER, SET_BB_FOOTER

From-SVN: r214121

1 files changed, 11 insertions, 11 deletions

diff --git a/gcc/cfgexpand.c b/gcc/cfgexpand.c
index f6da5d6..1235ff1 100644
--- a/gcc/cfgexpand.c
+++ b/gcc/cfgexpand.c
@@ -2170,9 +2170,9 @@ expand_gimple_cond (basic_block bb, gimple stmt)
     set_curr_insn_location (false_edge->goto_locus);
   emit_jump (label_rtx_for_bb (false_edge->dest));
 
-  BB_END (bb) = last;
+  SET_BB_END (bb) = last;
   if (BARRIER_P (BB_END (bb)))
-    BB_END (bb) = PREV_INSN (BB_END (bb));
+    SET_BB_END (bb) = PREV_INSN (BB_END (bb));
   update_bb_for_insn (bb);
 
   new_bb = create_basic_block (NEXT_INSN (last), get_last_insn (), bb);
@@ -2186,7 +2186,7 @@ expand_gimple_cond (basic_block bb, gimple stmt)
   new_edge->probability = REG_BR_PROB_BASE;
   new_edge->count = new_bb->count;
   if (BARRIER_P (BB_END (new_bb)))
-    BB_END (new_bb) = PREV_INSN (BB_END (new_bb));
+    SET_BB_END (new_bb) = PREV_INSN (BB_END (new_bb));
   update_bb_for_insn (new_bb);
 
   maybe_dump_rtl_for_gimple_stmt (stmt, last2);
@@ -3485,7 +3485,7 @@ expand_gimple_tailcall (basic_block bb, gimple stmt, bool *can_fallthru)
 		 | EDGE_SIBCALL);
   e->probability += probability;
   e->count += count;
-  BB_END (bb) = last;
+  SET_BB_END (bb) = last;
   update_bb_for_insn (bb);
 
   if (NEXT_INSN (last))
@@ -3494,7 +3494,7 @@ expand_gimple_tailcall (basic_block bb, gimple stmt, bool *can_fallthru)
 
       last = BB_END (bb);
       if (BARRIER_P (last))
-	BB_END (bb) = PREV_INSN (last);
+	SET_BB_END (bb) = PREV_INSN (last);
     }
 
   maybe_dump_rtl_for_gimple_stmt (stmt, last2);
@@ -4955,15 +4955,15 @@ expand_gimple_basic_block (basic_block bb, bool disable_tail_calls)
 
       /* Java emits line number notes in the top of labels.
 	 ??? Make this go away once line number notes are obsoleted.  */
-      BB_HEAD (bb) = NEXT_INSN (last);
+      SET_BB_HEAD (bb) = NEXT_INSN (last);
       if (NOTE_P (BB_HEAD (bb)))
-	BB_HEAD (bb) = NEXT_INSN (BB_HEAD (bb));
+	SET_BB_HEAD (bb) = NEXT_INSN (BB_HEAD (bb));
       note = emit_note_after (NOTE_INSN_BASIC_BLOCK, BB_HEAD (bb));
 
       maybe_dump_rtl_for_gimple_stmt (stmt, last);
     }
   else
-    note = BB_HEAD (bb) = emit_note (NOTE_INSN_BASIC_BLOCK);
+    note = SET_BB_HEAD (bb) = emit_note (NOTE_INSN_BASIC_BLOCK);
 
   NOTE_BASIC_BLOCK (note) = bb;
 
@@ -5246,7 +5246,7 @@ expand_gimple_basic_block (basic_block bb, bool disable_tail_calls)
     last = PREV_INSN (last);
   if (JUMP_TABLE_DATA_P (last))
     last = PREV_INSN (PREV_INSN (last));
-  BB_END (bb) = last;
+  SET_BB_END (bb) = last;
 
   update_bb_for_insn (bb);
 
@@ -5348,7 +5348,7 @@ construct_exit_block (void)
     return;
   /* While emitting the function end we could move end of the last basic
      block.  */
-  BB_END (prev_bb) = orig_end;
+  SET_BB_END (prev_bb) = orig_end;
   while (NEXT_INSN (head) && NOTE_P (NEXT_INSN (head)))
     head = NEXT_INSN (head);
   /* But make sure exit_block starts with RETURN_LABEL, otherwise the
@@ -5360,7 +5360,7 @@ construct_exit_block (void)
       while (NEXT_INSN (head) != return_label)
 	{
 	  if (!NOTE_P (NEXT_INSN (head)))
-	    BB_END (prev_bb) = NEXT_INSN (head);
+	    SET_BB_END (prev_bb) = NEXT_INSN (head);
 	  head = NEXT_INSN (head);
 	}
     }