* doc/install.texi: Document --enable-linker-build-id option.

[pf3gnuchains/gcc-fork.git] / gcc / targhooks.c

diff --git a/gcc/targhooks.c b/gcc/targhooks.c
index 4e9b9ad..7035c49 100644 (file)
--- a/gcc/targhooks.c
+++ b/gcc/targhooks.c
@@ -1,5 +1,6 @@
 /* Default target hook functions.
-   Copyright (C) 2003, 2004, 2005, 2007 Free Software Foundation, Inc.
+   Copyright (C) 2003, 2004, 2005, 2007, 2008, 2009
+   Free Software Foundation, Inc.
 
 This file is part of GCC.
 
@@ -576,6 +577,21 @@ default_internal_arg_pointer (void)
 }
 
 enum reg_class
+default_branch_target_register_class (void)
+{
+  return NO_REGS;
+}
+
+#ifdef IRA_COVER_CLASSES
+const enum reg_class *
+default_ira_cover_classes (void)
+{
+  static enum reg_class classes[] = IRA_COVER_CLASSES;
+  return classes;
+}
+#endif
+
+enum reg_class
 default_secondary_reload (bool in_p ATTRIBUTE_UNUSED, rtx x ATTRIBUTE_UNUSED,
                          enum reg_class reload_class ATTRIBUTE_UNUSED,
                          enum machine_mode reload_mode ATTRIBUTE_UNUSED,
@@ -715,6 +731,19 @@ default_target_option_valid_attribute_p (tree ARG_UNUSED (fndecl),
                                         tree ARG_UNUSED (args),
                                         int ARG_UNUSED (flags))
 {
+  warning (OPT_Wattributes,
+          "target attribute is not supported on this machine");
+
+  return false;
+}
+
+bool
+default_target_option_pragma_parse (tree ARG_UNUSED (args),
+                                   tree ARG_UNUSED (pop_target))
+{
+  warning (OPT_Wpragmas,
+          "#pragma GCC target is not supported for this machine");
+
   return false;
 }
 
@@ -743,4 +772,17 @@ default_target_option_can_inline_p (tree caller, tree callee)
   return ret;
 }
 
+#ifndef HAVE_casesi
+# define HAVE_casesi 0
+#endif
+
+/* If the machine does not have a case insn that compares the bounds,
+   this means extra overhead for dispatch tables, which raises the
+   threshold for using them.  */
+
+unsigned int default_case_values_threshold (void)
+{
+  return (HAVE_casesi ? 4 : 5);
+}
+
 #include "gt-targhooks.h"