* config.gcc (powerpc-*-linux*): Merge variants.

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

diff --git a/gcc/targhooks.c b/gcc/targhooks.c
index b446940..5b7b875 100644 (file)
--- a/gcc/targhooks.c
+++ b/gcc/targhooks.c
@@ -1,5 +1,5 @@
 /* Default target hook functions.
-   Copyright (C) 2003, 2004, 2005, 2007 Free Software Foundation, Inc.
+   Copyright (C) 2003, 2004, 2005, 2007, 2008 Free Software Foundation, Inc.
 
 This file is part of GCC.
 
@@ -75,6 +75,26 @@ default_external_libcall (rtx fun ATTRIBUTE_UNUSED)
 #endif
 }
 
+int
+default_unspec_may_trap_p (const_rtx x, unsigned flags)
+{
+  int i;
+
+  if (GET_CODE (x) == UNSPEC_VOLATILE
+      /* Any floating arithmetic may trap.  */
+      || (SCALAR_FLOAT_MODE_P (GET_MODE (x))
+         && flag_trapping_math))
+    return 1;
+
+  for (i = 0; i < XVECLEN (x, 0); ++i)
+    {
+      if (may_trap_p_1 (XVECEXP (x, 0, i), flags))
+       return 1;
+    }
+
+  return 0;
+}
+
 enum machine_mode
 default_cc_modes_compatible (enum machine_mode m1, enum machine_mode m2)
 {
@@ -87,11 +107,7 @@ bool
 default_return_in_memory (const_tree type,
                          const_tree fntype ATTRIBUTE_UNUSED)
 {
-#ifndef RETURN_IN_MEMORY
   return (TYPE_MODE (type) == BLKmode);
-#else
-  return RETURN_IN_MEMORY (type);
-#endif
 }
 
 rtx
@@ -136,7 +152,7 @@ default_pretend_outgoing_varargs_named (CUMULATIVE_ARGS *ca ATTRIBUTE_UNUSED)
 enum machine_mode
 default_eh_return_filter_mode (void)
 {
-  return word_mode;
+  return targetm.unwind_word_mode ();
 }
 
 enum machine_mode
@@ -151,6 +167,12 @@ default_libgcc_shift_count_mode (void)
   return word_mode;
 }
 
+enum machine_mode
+default_unwind_word_mode (void)
+{
+  return word_mode;
+}
+
 /* The default implementation of TARGET_SHIFT_TRUNCATION_MASK.  */
 
 unsigned HOST_WIDE_INT
@@ -553,13 +575,22 @@ default_internal_arg_pointer (void)
     return virtual_incoming_args_rtx;
 }
 
+#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,
                          secondary_reload_info *sri)
 {
-  enum reg_class class = NO_REGS;
+  enum reg_class rclass = NO_REGS;
 
   if (sri->prev_sri && sri->prev_sri->t_icode != CODE_FOR_nothing)
     {
@@ -568,13 +599,13 @@ default_secondary_reload (bool in_p ATTRIBUTE_UNUSED, rtx x ATTRIBUTE_UNUSED,
     }
 #ifdef SECONDARY_INPUT_RELOAD_CLASS
   if (in_p)
-    class = SECONDARY_INPUT_RELOAD_CLASS (reload_class, reload_mode, x);
+    rclass = SECONDARY_INPUT_RELOAD_CLASS (reload_class, reload_mode, x);
 #endif
 #ifdef SECONDARY_OUTPUT_RELOAD_CLASS
   if (! in_p)
-    class = SECONDARY_OUTPUT_RELOAD_CLASS (reload_class, reload_mode, x);
+    rclass = SECONDARY_OUTPUT_RELOAD_CLASS (reload_class, reload_mode, x);
 #endif
-  if (class != NO_REGS)
+  if (rclass != NO_REGS)
     {
       enum insn_code icode = (in_p ? reload_in_optab[(int) reload_mode]
                              : reload_out_optab[(int) reload_mode]);
@@ -626,19 +657,19 @@ default_secondary_reload (bool in_p ATTRIBUTE_UNUSED, rtx x ATTRIBUTE_UNUSED,
 
          if (reg_class_subset_p (reload_class, insn_class))
            {
-             gcc_assert (scratch_class == class);
-             class = NO_REGS;
+             gcc_assert (scratch_class == rclass);
+             rclass = NO_REGS;
            }
          else
-           class = insn_class;
+           rclass = insn_class;
 
         }
-      if (class == NO_REGS)
+      if (rclass == NO_REGS)
        sri->icode = icode;
       else
        sri->t_icode = icode;
     }
-  return class;
+  return rclass;
 }
 
 bool
@@ -681,4 +712,57 @@ default_builtin_vector_alignment_reachable (const_tree type, bool is_packed)
   return true;
 }
 
+bool
+default_hard_regno_scratch_ok (unsigned int regno ATTRIBUTE_UNUSED)
+{
+  return true;
+}
+
+bool
+default_target_option_valid_attribute_p (tree ARG_UNUSED (fndecl),
+                                        tree ARG_UNUSED (name),
+                                        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;
+}
+
+bool
+default_target_option_can_inline_p (tree caller, tree callee)
+{
+  bool ret = false;
+  tree callee_opts = DECL_FUNCTION_SPECIFIC_TARGET (callee);
+  tree caller_opts = DECL_FUNCTION_SPECIFIC_TARGET (caller);
+
+  /* If callee has no option attributes, then it is ok to inline */
+  if (!callee_opts)
+    ret = true;
+
+  /* If caller has no option attributes, but callee does then it is not ok to
+     inline */
+  else if (!caller_opts)
+    ret = false;
+
+  /* If both caller and callee have attributes, assume that if the pointer is
+     different, the the two functions have different target options since
+     build_target_option_node uses a hash table for the options.  */
+  else
+    ret = (callee_opts == caller_opts);
+
+  return ret;
+}
+
 #include "gt-targhooks.h"