re PR ipa/64776 (FAIL: gcc.dg/ipa/pr64307.c (internal compiler error) on x86_64-apple-darwin14)

	PR ipa/64776
	* cgraphunit.c (cgraph_node::expand_thunk): If not this_adjusting,
	handle the first argument in the same loop as all the other arguments.

From-SVN: r220156

gcc/ChangeLog

 2015-01-27  Jakub Jelinek  <jakub@redhat.com>
 
+	PR ipa/64776
+	* cgraphunit.c (cgraph_node::expand_thunk): If not this_adjusting,
+	handle the first argument in the same loop as all the other arguments.
+
 	PR rtl-optimization/61058
 	* jump.c (cleanup_barriers): Update basic block boundaries
 	if BLOCK_FOR_INSN is non-NULL on PREV.

gcc/cgraphunit.c

@@ -1610,14 +1610,18 @@ cgraph_node::expand_thunk (bool output_asm_thunks, bool force_gimple_thunk)
       for (arg = a; arg; arg = DECL_CHAIN (arg))
         nargs++;
       auto_vec<tree> vargs (nargs);
+      i = 0;
+      arg = a;
       if (this_adjusting)
-        vargs.quick_push (thunk_adjust (&bsi, a, 1, fixed_offset,
-					virtual_offset));
-      else if (nargs)
-        vargs.quick_push (a);
+	{
+	  vargs.quick_push (thunk_adjust (&bsi, a, 1, fixed_offset,
+					  virtual_offset));
+	  arg = DECL_CHAIN (a);
+	  i = 1;
+	}
 
       if (nargs)
-        for (i = 1, arg = DECL_CHAIN (a); i < nargs; i++, arg = DECL_CHAIN (arg))
+	for (; i < nargs; i++, arg = DECL_CHAIN (arg))
 	  {
 	    tree tmp = arg;
 	    if (!is_gimple_val (arg))