d: Add always_inline to the internal attribute table.

This attribute is not directly accessible from user code, rather it is
indirectly added from the @forceinline attribute.  Even so, a handler
should be present for it to prevent false positive warnings.

Said warnings are not something that could happen currently, but will
become a problem from fixing PR90136 later.

gcc/d/ChangeLog:

	* d-attribs.cc (d_langhook_common_attribute_table): Add always_inline.
	(handle_always_inline_attribute): New function.

diff --git a/gcc/d/ChangeLog b/gcc/d/ChangeLog
index 9a3fbfa7c561ba06a6791d099328a5e6fa25707f..20817e38fc69fbe9f51dee1e487bdd2cf254de10 100644 (file)
--- a/gcc/d/ChangeLog
+++ b/gcc/d/ChangeLog
@@ -1,3 +1,8 @@
+2020-03-31  Iain Buclaw  <ibuclaw@gdcproject.org>
+
+       * d-attribs.cc (d_langhook_common_attribute_table): Add always_inline.
+       (handle_always_inline_attribute): New function.
+
 2020-03-31  Iain Buclaw  <ibuclaw@gdcproject.org>
 
        PR d/94424

diff --git a/gcc/d/d-attribs.cc b/gcc/d/d-attribs.cc
index c3b80ed5b9de48b415a923e1417c8d239b307243..bba6f516ea359a5f8c2cee13ec8b4d9d7c9e04cf 100644 (file)
--- a/gcc/d/d-attribs.cc
+++ b/gcc/d/d-attribs.cc
@@ -52,6 +52,7 @@ static tree handle_type_generic_attribute (tree *, tree, tree, int, bool *);
 static tree handle_transaction_pure_attribute (tree *, tree, tree, int, bool *);
 static tree handle_returns_twice_attribute (tree *, tree, tree, int, bool *);
 static tree handle_fnspec_attribute (tree *, tree, tree, int, bool *);
+static tree handle_always_inline_attribute (tree *, tree, tree, int, bool *);
 
 /* D attribute handlers for user defined attributes.  */
 static tree d_handle_noinline_attribute (tree *, tree, tree, int, bool *);
@@ -137,6 +138,8 @@ const attribute_spec d_langhook_common_attribute_table[] =
             handle_type_generic_attribute, NULL),
   ATTR_SPEC ("fn spec", 1, 1, false, true, true, false,
             handle_fnspec_attribute, NULL),
+  ATTR_SPEC ("always_inline", 0, 0, true,  false, false, false,
+            handle_always_inline_attribute, NULL),
   ATTR_SPEC (NULL, 0, 0, false, false, false, false, NULL, NULL),
 };
 
@@ -565,6 +568,19 @@ handle_fnspec_attribute (tree *node ATTRIBUTE_UNUSED, tree ARG_UNUSED (name),
   return NULL_TREE;
 }
 
+/* Handle a "always_inline" attribute; arguments as in
+   struct attribute_spec.handler.  */
+
+static tree
+handle_always_inline_attribute (tree *node, tree ARG_UNUSED (name),
+                               tree ARG_UNUSED (args), int ARG_UNUSED (flags),
+                               bool *no_add_attrs ATTRIBUTE_UNUSED)
+{
+  gcc_assert (TREE_CODE (*node) == FUNCTION_DECL);
+
+  return NULL_TREE;
+}
+
 /* Language specific attribute handlers.  */
 
 /* Handle a "noinline" attribute.  */