This fixes a bug in my r236491: on nvptx, functions without prologue

would not get an epilogue either.


	* function.c (thread_prologue_and_epilogue_insns): Commit the
	insertion of the epilogue.

From-SVN: r236545

gcc/ChangeLog

+2016-05-20  Segher Boessenkool  <segher@kernel.crashing.org>
+
+	* function.c (thread_prologue_and_epilogue_insns): Commit the
+	insertion of the epilogue.
+
 2016-05-20  Martin Jambor  <mjambor@suse.cz>
 
 	PR tree-optimization/70884

gcc/function.c

@@ -5966,6 +5966,7 @@ thread_prologue_and_epilogue_insns (void)
       if (epilogue_seq)
 	{
 	  insert_insn_on_edge (epilogue_seq, exit_fallthru_edge);
+	  commit_edge_insertions ();
 
 	  /* The epilogue insns we inserted may cause the exit edge to no longer
 	     be fallthru.  */