[Ada] Add support for noinline and noclone attributes

[Eric Botcazou]

They are automatically set by the middle-end when the interrupt attribute is.

Tested on x86_64-suse-linux, applied on the mainline and 6 branch.


2016-06-06  Eric Botcazou  <ebotca...@adacore.com>

        * gcc-interface/utils.c (gnat_internal_attribute_table): Add support
        for noinline and noclone attributes.
        (handle_noinline_attribute): New handler.
        (handle_noclone_attribute): Likewise.

-- 
Eric Botcazou
Index: gcc-interface/utils.c
===================================================================
--- gcc-interface/utils.c	(revision 237119)
+++ gcc-interface/utils.c	(working copy)
@@ -90,6 +90,8 @@ static tree handle_novops_attribute (tre
 static tree handle_nonnull_attribute (tree *, tree, tree, int, bool *);
 static tree handle_sentinel_attribute (tree *, tree, tree, int, bool *);
 static tree handle_noreturn_attribute (tree *, tree, tree, int, bool *);
+static tree handle_noinline_attribute (tree *, tree, tree, int, bool *);
+static tree handle_noclone_attribute (tree *, tree, tree, int, bool *);
 static tree handle_leaf_attribute (tree *, tree, tree, int, bool *);
 static tree handle_always_inline_attribute (tree *, tree, tree, int, bool *);
 static tree handle_malloc_attribute (tree *, tree, tree, int, bool *);
@@ -121,6 +123,10 @@ const struct attribute_spec gnat_interna
     false },
   { "noreturn",     0, 0,  true,  false, false, handle_noreturn_attribute,
     false },
+  { "noinline",     0, 0,  true,  false, false, handle_noinline_attribute,
+    false },
+  { "noclone",      0, 0,  true,  false, false, handle_noclone_attribute,
+    false },
   { "leaf",         0, 0,  true,  false, false, handle_leaf_attribute,
     false },
   { "always_inline",0, 0,  true,  false, false, handle_always_inline_attribute,
@@ -5960,6 +5966,51 @@ handle_noreturn_attribute (tree *node, t
       *no_add_attrs = true;
     }
 
+  return NULL_TREE;
+}
+
+/* Handle a "noinline" attribute; arguments as in
+   struct attribute_spec.handler.  */
+
+static tree
+handle_noinline_attribute (tree *node, tree name,
+			   tree ARG_UNUSED (args),
+			   int ARG_UNUSED (flags), bool *no_add_attrs)
+{
+  if (TREE_CODE (*node) == FUNCTION_DECL)
+    {
+      if (lookup_attribute ("always_inline", DECL_ATTRIBUTES (*node)))
+	{
+	  warning (OPT_Wattributes, "%qE attribute ignored due to conflict "
+		   "with attribute %qs", name, "always_inline");
+	  *no_add_attrs = true;
+	}
+      else
+	DECL_UNINLINABLE (*node) = 1;
+    }
+  else
+    {
+      warning (OPT_Wattributes, "%qE attribute ignored", name);
+      *no_add_attrs = true;
+    }
+
+  return NULL_TREE;
+}
+
+/* Handle a "noclone" attribute; arguments as in
+   struct attribute_spec.handler.  */
+
+static tree
+handle_noclone_attribute (tree *node, tree name,
+			  tree ARG_UNUSED (args),
+			  int ARG_UNUSED (flags), bool *no_add_attrs)
+{
+  if (TREE_CODE (*node) != FUNCTION_DECL)
+    {
+      warning (OPT_Wattributes, "%qE attribute ignored", name);
+      *no_add_attrs = true;
+    }
+
   return NULL_TREE;
 }