re PR bootstrap/63204 (gtype-desc.c:887:40: error: 'struct loop' has no member…

re PR bootstrap/63204 (gtype-desc.c:887:40: error: 'struct loop' has no member named 'former_header' breaks bootstrap)

2014-09-08  Richard Biener  <rguenther@suse.de>

	PR bootstrap/63204
	* cfgloop.c (mark_loop_for_removal): Track former header
	unconditionally.
	* cfgloop.h (struct loop): Add former_header member unconditionally.
	* loop-init.c (fix_loop_structure): Enable bogus loop removal
	diagnostic unconditionally.

From-SVN: r215012

gcc/ChangeLog

+2014-09-08  Richard Biener  <rguenther@suse.de>
+
+	PR bootstrap/63204
+	* cfgloop.c (mark_loop_for_removal): Track former header
+	unconditionally.
+	* cfgloop.h (struct loop): Add former_header member unconditionally.
+	* loop-init.c (fix_loop_structure): Enable bogus loop removal
+	diagnostic unconditionally.
+
 2014-09-07 Venkataramanan Kumar <venkataramanan.kumar@linaro.org>
 
 	PR target/63190

gcc/cfgloop.c

@@ -1927,9 +1927,7 @@ bb_loop_depth (const_basic_block bb)
 void
 mark_loop_for_removal (loop_p loop)
 {
-#ifdef ENABLE_CHECKING
   loop->former_header = loop->header;
-#endif
   loop->header = NULL;
   loop->latch = NULL;
   loops_state_set (LOOPS_NEED_FIXUP);

gcc/cfgloop.h

@@ -194,13 +194,11 @@ struct GTY ((chain_next ("%h.next"))) loop {
   /* Number of iteration analysis data for RTL.  */
   struct niter_desc *simple_loop_desc;
 
-#ifdef ENABLE_CHECKING
   /* For sanity checking during loop fixup we record here the former
      loop header for loops marked for removal.  Note that this prevents
      the basic-block from being collected but its index can still be
      reused.  */
   basic_block former_header;
-#endif
 };
 
 /* Flags for state of loop structure.  */

gcc/loop-init.c

@@ -245,12 +245,10 @@ fix_loop_structure (bitmap changed_bbs)
 	}
 
       /* Remove the loop.  */
-#ifdef ENABLE_CHECKING
       if (loop->header)
 	loop->former_header = loop->header;
       else
 	gcc_assert (loop->former_header != NULL);
-#endif
       loop->header = NULL;
       flow_loop_tree_node_remove (loop);
     }
@@ -278,7 +276,6 @@ fix_loop_structure (bitmap changed_bbs)
   FOR_EACH_VEC_ELT (*get_loops (cfun), i, loop)
     if (loop && loop->header == NULL)
       {
-#ifdef ENABLE_CHECKING
 	if (dump_file
 	    && ((unsigned) loop->former_header->index
 		< basic_block_info_for_fn (cfun)->length ()))
@@ -306,7 +303,6 @@ fix_loop_structure (bitmap changed_bbs)
 			   former_header->loop_father->header->index);
 	      }
 	  }
-#endif
 	(*get_loops (cfun))[i] = NULL;
 	flow_loop_free (loop);
       }