--- a/gcc/optabs.h	Tue May 25 18:58:51 2010 +0900
+++ b/gcc/optabs.h	Tue Mar 22 17:18:12 2011 +0900
@@ -1,5 +1,5 @@
 /* Definitions for code generation pass of GNU compiler.
-   Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009
+   Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010
    Free Software Foundation, Inc.
 
 This file is part of GCC.
@@ -29,10 +29,6 @@
 
    For example, add_optab applies to addition.
 
-   The insn_code slot is the enum insn_code that says how to
-   generate an insn for this operation on a particular machine mode.
-   It is CODE_FOR_nothing if there is no such insn on the target machine.
-
    The `lib_call' slot is the name of the library function that
    can be used to perform the operation.
 
@@ -40,14 +36,17 @@
 
 struct optab_handlers
 {
-  enum insn_code insn_code;
+  /* I - CODE_FOR_nothing, where I is either the insn code of the
+     associated insn generator or CODE_FOR_nothing if there is no such
+     insn on the target machine.  */
+  int insn_code;
 };
 
 struct optab_d
 {
   enum rtx_code code;
+  char libcall_suffix;
   const char *libcall_basename;
-  char libcall_suffix;
   void (*libcall_gen)(struct optab_d *, const char *name, char suffix,
 		      enum machine_mode);
   struct optab_handlers handlers[NUM_MACHINE_MODES];
@@ -191,6 +190,11 @@
   OTI_pow,
   /* Arc tangent of y/x */
   OTI_atan2,
+  /* Floating multiply/add */
+  OTI_fma,
+  OTI_fms,
+  OTI_fnma,
+  OTI_fnms,
 
   /* Move instruction.  */
   OTI_mov,
@@ -372,8 +376,6 @@
   OTI_MAX
 };
 
-extern struct optab_d optab_table[OTI_MAX];
-
 #define ssadd_optab (&optab_table[OTI_ssadd])
 #define usadd_optab (&optab_table[OTI_usadd])
 #define sssub_optab (&optab_table[OTI_sssub])
@@ -435,6 +437,10 @@
 #define umax_optab (&optab_table[OTI_umax])
 #define pow_optab (&optab_table[OTI_pow])
 #define atan2_optab (&optab_table[OTI_atan2])
+#define fma_optab (&optab_table[OTI_fma])
+#define fms_optab (&optab_table[OTI_fms])
+#define fnma_optab (&optab_table[OTI_fnma])
+#define fnms_optab (&optab_table[OTI_fnms])
 
 #define mov_optab (&optab_table[OTI_mov])
 #define movstrict_optab (&optab_table[OTI_movstrict])
@@ -575,8 +581,6 @@
   COI_MAX
 };
 
-extern struct convert_optab_d convert_optab_table[COI_MAX];
-
 #define sext_optab (&convert_optab_table[COI_sext])
 #define zext_optab (&convert_optab_table[COI_zext])
 #define trunc_optab (&convert_optab_table[COI_trunc])
@@ -595,79 +599,152 @@
 #define satfract_optab (&convert_optab_table[COI_satfract])
 #define satfractuns_optab (&convert_optab_table[COI_satfractuns])
 
-/* These arrays record the insn_code of insns that may be needed to
-   perform input and output reloads of special objects.  They provide a
-   place to pass a scratch register.  */
-extern enum insn_code reload_in_optab[NUM_MACHINE_MODES];
-extern enum insn_code reload_out_optab[NUM_MACHINE_MODES];
-
 /* Contains the optab used for each rtx code.  */
 extern optab code_to_optab[NUM_RTX_CODE + 1];
 
 
 typedef rtx (*rtxfun) (rtx);
 
+/* Enumerates operations that have a named .md pattern associated
+   with them, but which are not implemented as library functions.  */
+enum direct_optab_index
+{
 #ifdef HAVE_conditional_move
-/* Indexed by the machine mode, gives the insn code to make a conditional
-   move insn.  */
-
-extern enum insn_code movcc_gen_code[NUM_MACHINE_MODES];
+  /* Conditional move operations.  */
+  DOI_movcc,
 #endif
 
-/* Indexed by the machine mode, gives the insn code for vector conditional
-   operation.  */
+  /* Operations that use a scratch register to perform input and output
+     reloads of special objects.  */
+  DOI_reload_in,
+  DOI_reload_out,
 
-extern enum insn_code vcond_gen_code[NUM_MACHINE_MODES];
-extern enum insn_code vcondu_gen_code[NUM_MACHINE_MODES];
+  /* Vector conditional operations.  */
+  DOI_vcond,
+  DOI_vcondu,
+
+  /* Block move operation.  */
+  DOI_movmem,
 
-/* This array records the insn_code of insns to perform block moves.  */
-extern enum insn_code movmem_optab[NUM_MACHINE_MODES];
+  /* Block set operation.  */
+  DOI_setmem,
+
+  /* Various types of block compare operation.  */
+  DOI_cmpstr,
+  DOI_cmpstrn,
+  DOI_cmpmem,
 
-/* This array records the insn_code of insns to perform block sets.  */
-extern enum insn_code setmem_optab[NUM_MACHINE_MODES];
+  /* Synchronization primitives.  This first set is atomic operation for
+     which we don't care about the resulting value.  */
+  DOI_sync_add,
+  DOI_sync_sub,
+  DOI_sync_ior,
+  DOI_sync_and,
+  DOI_sync_xor,
+  DOI_sync_nand,
 
-/* These arrays record the insn_code of two different kinds of insns
-   to perform block compares.  */
-extern enum insn_code cmpstr_optab[NUM_MACHINE_MODES];
-extern enum insn_code cmpstrn_optab[NUM_MACHINE_MODES];
-extern enum insn_code cmpmem_optab[NUM_MACHINE_MODES];
+  /* This second set is atomic operations in which we return the value
+     that existed in memory before the operation.  */
+  DOI_sync_old_add,
+  DOI_sync_old_sub,
+  DOI_sync_old_ior,
+  DOI_sync_old_and,
+  DOI_sync_old_xor,
+  DOI_sync_old_nand,
 
-/* Synchronization primitives.  This first set is atomic operation for
-   which we don't care about the resulting value.  */
-extern enum insn_code sync_add_optab[NUM_MACHINE_MODES];
-extern enum insn_code sync_sub_optab[NUM_MACHINE_MODES];
-extern enum insn_code sync_ior_optab[NUM_MACHINE_MODES];
-extern enum insn_code sync_and_optab[NUM_MACHINE_MODES];
-extern enum insn_code sync_xor_optab[NUM_MACHINE_MODES];
-extern enum insn_code sync_nand_optab[NUM_MACHINE_MODES];
+  /* This third set is atomic operations in which we return the value
+     that resulted after performing the operation.  */
+  DOI_sync_new_add,
+  DOI_sync_new_sub,
+  DOI_sync_new_ior,
+  DOI_sync_new_and,
+  DOI_sync_new_xor,
+  DOI_sync_new_nand,
+
+  /* Atomic compare and swap.  */
+  DOI_sync_compare_and_swap,
+
+  /* Atomic exchange with acquire semantics.  */
+  DOI_sync_lock_test_and_set,
+
+  /* Atomic clear with release semantics.  */
+  DOI_sync_lock_release,
+
+  DOI_MAX
+};
 
-/* This second set is atomic operations in which we return the value
-   that existed in memory before the operation.  */
-extern enum insn_code sync_old_add_optab[NUM_MACHINE_MODES];
-extern enum insn_code sync_old_sub_optab[NUM_MACHINE_MODES];
-extern enum insn_code sync_old_ior_optab[NUM_MACHINE_MODES];
-extern enum insn_code sync_old_and_optab[NUM_MACHINE_MODES];
-extern enum insn_code sync_old_xor_optab[NUM_MACHINE_MODES];
-extern enum insn_code sync_old_nand_optab[NUM_MACHINE_MODES];
+/* A structure that says which insn should be used to perform an operation
+   in a particular mode.  */
+struct direct_optab_d
+{
+  struct optab_handlers handlers[NUM_MACHINE_MODES];
+};
+typedef struct direct_optab_d *direct_optab;
 
-/* This third set is atomic operations in which we return the value
-   that resulted after performing the operation.  */
-extern enum insn_code sync_new_add_optab[NUM_MACHINE_MODES];
-extern enum insn_code sync_new_sub_optab[NUM_MACHINE_MODES];
-extern enum insn_code sync_new_ior_optab[NUM_MACHINE_MODES];
-extern enum insn_code sync_new_and_optab[NUM_MACHINE_MODES];
-extern enum insn_code sync_new_xor_optab[NUM_MACHINE_MODES];
-extern enum insn_code sync_new_nand_optab[NUM_MACHINE_MODES];
+#ifdef HAVE_conditional_move
+#define movcc_optab (&direct_optab_table[(int) DOI_movcc])
+#endif
+#define reload_in_optab (&direct_optab_table[(int) DOI_reload_in])
+#define reload_out_optab (&direct_optab_table[(int) DOI_reload_out])
+#define vcond_optab (&direct_optab_table[(int) DOI_vcond])
+#define vcondu_optab (&direct_optab_table[(int) DOI_vcondu])
+#define movmem_optab (&direct_optab_table[(int) DOI_movmem])
+#define setmem_optab (&direct_optab_table[(int) DOI_setmem])
+#define cmpstr_optab (&direct_optab_table[(int) DOI_cmpstr])
+#define cmpstrn_optab (&direct_optab_table[(int) DOI_cmpstrn])
+#define cmpmem_optab (&direct_optab_table[(int) DOI_cmpmem])
+#define sync_add_optab (&direct_optab_table[(int) DOI_sync_add])
+#define sync_sub_optab (&direct_optab_table[(int) DOI_sync_sub])
+#define sync_ior_optab (&direct_optab_table[(int) DOI_sync_ior])
+#define sync_and_optab (&direct_optab_table[(int) DOI_sync_and])
+#define sync_xor_optab (&direct_optab_table[(int) DOI_sync_xor])
+#define sync_nand_optab (&direct_optab_table[(int) DOI_sync_nand])
+#define sync_old_add_optab (&direct_optab_table[(int) DOI_sync_old_add])
+#define sync_old_sub_optab (&direct_optab_table[(int) DOI_sync_old_sub])
+#define sync_old_ior_optab (&direct_optab_table[(int) DOI_sync_old_ior])
+#define sync_old_and_optab (&direct_optab_table[(int) DOI_sync_old_and])
+#define sync_old_xor_optab (&direct_optab_table[(int) DOI_sync_old_xor])
+#define sync_old_nand_optab (&direct_optab_table[(int) DOI_sync_old_nand])
+#define sync_new_add_optab (&direct_optab_table[(int) DOI_sync_new_add])
+#define sync_new_sub_optab (&direct_optab_table[(int) DOI_sync_new_sub])
+#define sync_new_ior_optab (&direct_optab_table[(int) DOI_sync_new_ior])
+#define sync_new_and_optab (&direct_optab_table[(int) DOI_sync_new_and])
+#define sync_new_xor_optab (&direct_optab_table[(int) DOI_sync_new_xor])
+#define sync_new_nand_optab (&direct_optab_table[(int) DOI_sync_new_nand])
+#define sync_compare_and_swap_optab \
+  (&direct_optab_table[(int) DOI_sync_compare_and_swap])
+#define sync_lock_test_and_set_optab \
+  (&direct_optab_table[(int) DOI_sync_lock_test_and_set])
+#define sync_lock_release_optab \
+  (&direct_optab_table[(int) DOI_sync_lock_release])
+
+/* Target-dependent globals.  */
+struct target_optabs {
+  /* Tables of patterns that may have an associated libcall.  */
+  struct optab_d x_optab_table[(int) OTI_MAX];
 
-/* Atomic compare and swap.  */
-extern enum insn_code sync_compare_and_swap[NUM_MACHINE_MODES];
+  /* Tables of patterns for converting one mode to another.  */
+  struct convert_optab_d x_convert_optab_table[(int) COI_MAX];
+
+  /* Tables of patterns for direct optabs (i.e. those which cannot be
+     implemented using a libcall).  */
+  struct direct_optab_d x_direct_optab_table[(int) DOI_MAX];
+};
 
-/* Atomic exchange with acquire semantics.  */
-extern enum insn_code sync_lock_test_and_set[NUM_MACHINE_MODES];
+extern struct target_optabs default_target_optabs;
+#if SWITCHABLE_TARGET
+extern struct target_optabs *this_target_optabs;
+#else
+#define this_target_optabs (&default_target_optabs)
+#endif
 
-/* Atomic clear with release semantics.  */
-extern enum insn_code sync_lock_release[NUM_MACHINE_MODES];
-
+#define optab_table \
+  (this_target_optabs->x_optab_table)
+#define convert_optab_table \
+  (this_target_optabs->x_convert_optab_table)
+#define direct_optab_table \
+  (this_target_optabs->x_direct_optab_table)
+
 /* Define functions given in optabs.c.  */
 
 extern rtx expand_widen_pattern_expr (sepops ops, rtx op0, rtx op1, rtx wide_op,
@@ -782,9 +859,66 @@
 /* Generate code for VEC_LSHIFT_EXPR and VEC_RSHIFT_EXPR.  */
 extern rtx expand_vec_shift_expr (sepops, rtx);
 
-#define optab_handler(optab,mode) (&(optab)->handlers[(int) (mode)])
-#define convert_optab_handler(optab,mode,mode2) \
-	(&(optab)->handlers[(int) (mode)][(int) (mode2)])
+/* Return the insn used to implement mode MODE of OP, or CODE_FOR_nothing
+   if the target does not have such an insn.  */
+
+static inline enum insn_code
+optab_handler (optab op, enum machine_mode mode)
+{
+  return (enum insn_code) (op->handlers[(int) mode].insn_code
+			   + (int) CODE_FOR_nothing);
+}
+
+/* Record that insn CODE should be used to implement mode MODE of OP.  */
+
+static inline void
+set_optab_handler (optab op, enum machine_mode mode, enum insn_code code)
+{
+  op->handlers[(int) mode].insn_code = (int) code - (int) CODE_FOR_nothing;
+}
+
+/* Return the insn used to perform conversion OP from mode FROM_MODE
+   to mode TO_MODE; return CODE_FOR_nothing if the target does not have
+   such an insn.  */
+
+static inline enum insn_code
+convert_optab_handler (convert_optab op, enum machine_mode to_mode,
+		       enum machine_mode from_mode)
+{
+  return ((enum insn_code)
+	  (op->handlers[(int) to_mode][(int) from_mode].insn_code
+	   + (int) CODE_FOR_nothing));
+}
+
+/* Record that insn CODE should be used to perform conversion OP
+   from mode FROM_MODE to mode TO_MODE.  */
+
+static inline void
+set_convert_optab_handler (convert_optab op, enum machine_mode to_mode,
+			   enum machine_mode from_mode, enum insn_code code)
+{
+  op->handlers[(int) to_mode][(int) from_mode].insn_code
+    = (int) code - (int) CODE_FOR_nothing;
+}
+
+/* Return the insn used to implement mode MODE of OP, or CODE_FOR_nothing
+   if the target does not have such an insn.  */
+
+static inline enum insn_code
+direct_optab_handler (direct_optab op, enum machine_mode mode)
+{
+  return (enum insn_code) (op->handlers[(int) mode].insn_code
+			   + (int) CODE_FOR_nothing);
+}
+
+/* Record that insn CODE should be used to implement mode MODE of OP.  */
+
+static inline void
+set_direct_optab_handler (direct_optab op, enum machine_mode mode,
+			  enum insn_code code)
+{
+  op->handlers[(int) mode].insn_code = (int) code - (int) CODE_FOR_nothing;
+}
 
 extern rtx optab_libfunc (optab optab, enum machine_mode mode);
 extern rtx convert_optab_libfunc (convert_optab optab, enum machine_mode mode1,