langhooks.h (struct lang_hooks): Document that tree_size langhook may be also called on tcc_type nodes.

	* langhooks.h (struct lang_hooks): Document that tree_size langhook
	may be also called on tcc_type nodes.
	* langhooks.c (lhd_tree_size): Likewise.

	* gcc-interface/misc.c (gnat_tree_size): New function.
	(LANG_HOOKS_TREE_SIZE): Redefine.

From-SVN: r253829

5 files changed, 36 insertions, 6 deletions

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index fed7c36..f7de684 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,9 @@
+2017-10-17  Jakub Jelinek  <jakub@redhat.com>
+
+	* langhooks.h (struct lang_hooks): Document that tree_size langhook
+	may be also called on tcc_type nodes.
+	* langhooks.c (lhd_tree_size): Likewise.
+
 2017-10-17  David Malcolm  <dmalcolm@redhat.com>
 
 	* gimple-ssa-sprintf.c (fmtwarn): Update for changed signature of
diff --git a/gcc/ada/ChangeLog b/gcc/ada/ChangeLog
index 7708c58..7d50dbb 100644
--- a/gcc/ada/ChangeLog
+++ b/gcc/ada/ChangeLog
@@ -1,3 +1,8 @@
+2017-10-17  Jakub Jelinek  <jakub@redhat.com>
+
+	* gcc-interface/misc.c (gnat_tree_size): New function.
+	(LANG_HOOKS_TREE_SIZE): Redefine.
+
 2017-10-14  Hristian Kirtchev  <kirtchev@adacore.com>
 
 	* sem_elab.adb (In_Preelaborated_Context): A generic package subject to
diff --git a/gcc/ada/gcc-interface/misc.c b/gcc/ada/gcc-interface/misc.c
index 081a63a..5083c71 100644
--- a/gcc/ada/gcc-interface/misc.c
+++ b/gcc/ada/gcc-interface/misc.c
@@ -343,6 +343,23 @@ internal_error_function (diagnostic_context *context, const char *msgid,
   Compiler_Abort (sp, sp_loc, true);
 }
 
+/* lang_hooks.tree_size: Determine the size of a tree with code C,
+   which is a language-specific tree code in category tcc_constant,
+   tcc_exceptional or tcc_type.  The default expects never to be called.  */
+
+static size_t
+gnat_tree_size (enum tree_code code)
+{
+  gcc_checking_assert (code >= NUM_TREE_CODES);
+  switch (code)
+    {
+    case UNCONSTRAINED_ARRAY_TYPE:
+      return sizeof (tree_type_non_common);
+    default:
+      gcc_unreachable ();
+    }
+}
+
 /* Perform all the initialization steps that are language-specific.  */
 
 static bool
@@ -1387,6 +1404,8 @@ get_lang_specific (tree node)
 #define LANG_HOOKS_NAME			"GNU Ada"
 #undef  LANG_HOOKS_IDENTIFIER_SIZE
 #define LANG_HOOKS_IDENTIFIER_SIZE	sizeof (struct tree_identifier)
+#undef  LANG_HOOKS_TREE_SIZE
+#define LANG_HOOKS_TREE_SIZE		gnat_tree_size
 #undef  LANG_HOOKS_INIT
 #define LANG_HOOKS_INIT			gnat_init
 #undef  LANG_HOOKS_OPTION_LANG_MASK
diff --git a/gcc/langhooks.c b/gcc/langhooks.c
index c54b790..9b3212b 100644
--- a/gcc/langhooks.c
+++ b/gcc/langhooks.c
@@ -266,8 +266,8 @@ lhd_gimplify_expr (tree *expr_p ATTRIBUTE_UNUSED,
 }
 
 /* lang_hooks.tree_size: Determine the size of a tree with code C,
-   which is a language-specific tree code in category tcc_constant or
-   tcc_exceptional.  The default expects never to be called.  */
+   which is a language-specific tree code in category tcc_constant,
+   tcc_exceptional or tcc_type.  The default expects never to be called.  */
 size_t
 lhd_tree_size (enum tree_code c ATTRIBUTE_UNUSED)
 {
diff --git a/gcc/langhooks.h b/gcc/langhooks.h
index b0c9829..d1288f1 100644
--- a/gcc/langhooks.h
+++ b/gcc/langhooks.h
@@ -307,10 +307,10 @@ struct lang_hooks
   /* Remove any parts of the tree that are used only by the FE. */
   void (*free_lang_data) (tree);
 
-  /* Determines the size of any language-specific tcc_constant or
-     tcc_exceptional nodes.  Since it is called from make_node, the
-     only information available is the tree code.  Expected to die
-     on unrecognized codes.  */
+  /* Determines the size of any language-specific tcc_constant,
+     tcc_exceptional or tcc_type nodes.  Since it is called from
+     make_node, the only information available is the tree code.
+     Expected to die on unrecognized codes.  */
   size_t (*tree_size) (enum tree_code);
 
   /* Return the language mask used for converting argv into a sequence