targhooks.c (std_gimplify_va_arg_expr): Properly handle case of when…

targhooks.c (std_gimplify_va_arg_expr): Properly handle case of when TARGET_SPLIT_COMPLEX_ARG is defined.

	* targhooks.c (std_gimplify_va_arg_expr): Properly handle case of when
	TARGET_SPLIT_COMPLEX_ARG is defined.

From-SVN: r263671

gcc/ChangeLog

+2018-08-20  Chung-Lin Tang  <cltang@codesourcery.com>
+
+	* targhooks.c (std_gimplify_va_arg_expr): Properly handle case of when
+	TARGET_SPLIT_COMPLEX_ARG is defined.
+
 2018-08-20  Bernd Edlinger  <bernd.edlinger@hotmail.de>
 
 	* expr.c (store_field): Change gcc_assert to gcc_checking_assert.

gcc/targhooks.c

@@ -2154,6 +2154,23 @@ std_gimplify_va_arg_expr (tree valist, tree type, gimple_seq *pre_p,
   if (indirect)
     type = build_pointer_type (type);
 
+  if (targetm.calls.split_complex_arg
+      && TREE_CODE (type) == COMPLEX_TYPE
+      && targetm.calls.split_complex_arg (type))
+    {
+      tree real_part, imag_part;
+
+      real_part = std_gimplify_va_arg_expr (valist,
+					    TREE_TYPE (type), pre_p, NULL);
+      real_part = get_initialized_tmp_var (real_part, pre_p, NULL);
+
+      imag_part = std_gimplify_va_arg_expr (unshare_expr (valist),
+					    TREE_TYPE (type), pre_p, NULL);
+      imag_part = get_initialized_tmp_var (imag_part, pre_p, NULL);
+
+      return build2 (COMPLEX_EXPR, type, real_part, imag_part);
+   }
+
   align = PARM_BOUNDARY / BITS_PER_UNIT;
   boundary = targetm.calls.function_arg_boundary (TYPE_MODE (type), type);