invoke.texi (-flto-partition, [...]): Document.

	* doc/invoke.texi (-flto-partition, lto-partitions, lto-minpartition):
	Document.
	* opts.c (decode_options): Handle lto partitions.
	* common.opt (flto-partition=1to1, flto-partition=balanced): New.
	* params.def (PARAM_LTO_PARTITIONS, MIN_PARTITION_SIZE): New.

	* lto.c:  Include params.h.
	(add_cgraph_node_to_partition, add_varpool_node_to_partition): Do
	refcounting in aux field.
	(undo_partition, partition_cgraph_node_p, partition_varpool_node_p):
	New functions.
	(lto_1_to_1_map): Simplify.
	(lto_balanced_map): New function.
	(do_whole_program_analysis): Chose proper partitioning alg.
	* Make-lang.in (lto.o): Add dependency on params.h

From-SVN: r164995

1 files changed, 7 insertions, 0 deletions

diff --git a/gcc/opts.c b/gcc/opts.c
index 0560335..03098b5 100644
--- a/gcc/opts.c
+++ b/gcc/opts.c
@@ -1081,6 +1081,13 @@ decode_options (unsigned int argc, const char **argv,
       error ("LTO support has not been enabled in this configuration");
 #endif
     }
+  if (flag_lto_partition_balanced || flag_lto_partition_1to1)
+    {
+      if (flag_lto_partition_balanced && flag_lto_partition_1to1)
+	error ("Only one -flto-partitoin value can be specified");
+      if (!flag_whopr)
+	error ("-flto-partitoin has effect only with -fwhopr");
+    }
 
   /* Reconcile -flto and -fwhopr.  Set additional flags as appropriate and
      check option consistency.  */