sh.c (sh_gimplify_va_arg_expr): Loop to substitute a RECORD_TYPE record with the…

sh.c (sh_gimplify_va_arg_expr): Loop to substitute a RECORD_TYPE record with the type of its only member.

	* sh.c (sh_gimplify_va_arg_expr): Loop to substitute a RECORD_TYPE
	record with the type of its only member.

From-SVN: r103254

gcc/ChangeLog

+2005-08-18  J"orn Rennecke <joern.rennecke@st.com>
+
+	* sh.c (sh_gimplify_va_arg_expr): Loop to substitute a RECORD_TYPE
+	record with the type of its only member.
+
 2005-08-18  David Edelsohn  <edelsohn@gnu.org>
 
 	* config/rs6000/rs6000.md (ltu<mode>_compare): Convert to
@@ -81,6 +86,9 @@
 
 2005-08-17  J"orn Rennecke <joern.rennecke@st.com>
 
+	* sh.c (sh_gimplify_va_arg_expr): Don't substitute a RECORD_TYPE
+	record with the type of its only member if the modes don't match.
+
 	* varasm.c (decode_reg_name): Skip empty additional register names.
 
 2005-08-16  Zdenek Dvorak  <dvorakz@suse.cz>

gcc/config/sh/sh.c

@@ -6678,11 +6678,12 @@ sh_gimplify_va_arg_expr (tree valist, tree type, tree *pre_p,
       /* Structures with a single member with a distinct mode are passed
 	 like their member.  This is relevant if the latter has a REAL_TYPE
 	 or COMPLEX_TYPE type.  */
-      if (TREE_CODE (type) == RECORD_TYPE
+      while (TREE_CODE (type) == RECORD_TYPE
 	     && TYPE_FIELDS (type)
 	     && TREE_CODE (TYPE_FIELDS (type)) == FIELD_DECL
 	     && (TREE_CODE (TREE_TYPE (TYPE_FIELDS (type))) == REAL_TYPE
-	      || TREE_CODE (TREE_TYPE (TYPE_FIELDS (type))) == COMPLEX_TYPE)
+		 || TREE_CODE (TREE_TYPE (TYPE_FIELDS (type))) == COMPLEX_TYPE
+		 || TREE_CODE (TREE_TYPE (TYPE_FIELDS (type))) == RECORD_TYPE)
              && TREE_CHAIN (TYPE_FIELDS (type)) == NULL_TREE)
 	{
 	  tree field_type = TREE_TYPE (TYPE_FIELDS (type));
@@ -6690,8 +6691,11 @@ sh_gimplify_va_arg_expr (tree valist, tree type, tree *pre_p,
 	  if (TYPE_MODE (type) == TYPE_MODE (field_type))
 	    type = field_type;
 	  else
+	    {
 	      gcc_assert (TYPE_ALIGN (type)
 			  < GET_MODE_ALIGNMENT (TYPE_MODE (field_type)));
+	    break;
+	    }
 	}
 
       if (TARGET_SH4)