--- a/gcc/optabs.h	Sun Aug 21 07:07:55 2011 +0900
+++ b/gcc/optabs.h	Fri Oct 27 22:46:09 2017 +0900
@@ -1,6 +1,5 @@
 /* Definitions for code generation pass of GNU compiler.
-   Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010
-   Free Software Foundation, Inc.
+   Copyright (C) 2001-2017 Free Software Foundation, Inc.
 
 This file is part of GCC.
 
@@ -21,748 +20,180 @@
 #ifndef GCC_OPTABS_H
 #define GCC_OPTABS_H
 
-#include "insn-codes.h"
+#include "optabs-query.h"
+#include "optabs-libfuncs.h"
 
-/* Optabs are tables saying how to generate insn bodies
-   for various machine modes and numbers of operands.
-   Each optab applies to one operation.
-
-   For example, add_optab applies to addition.
+/* Generate code for a widening multiply.  */
+extern rtx expand_widening_mult (machine_mode, rtx, rtx, rtx, int, optab);
 
-   The `lib_call' slot is the name of the library function that
-   can be used to perform the operation.
-
-   A few optabs, such as move_optab, are used by special code.  */
-
-struct optab_handlers
-{
-  /* 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;
+/* Describes the type of an expand_operand.  Each value is associated
+   with a create_*_operand function; see the comments above those
+   functions for details.  */
+enum expand_operand_type {
+  EXPAND_FIXED,
+  EXPAND_OUTPUT,
+  EXPAND_INPUT,
+  EXPAND_CONVERT_TO,
+  EXPAND_CONVERT_FROM,
+  EXPAND_ADDRESS,
+  EXPAND_INTEGER
 };
 
-struct optab_d
-{
-  enum rtx_code code;
-  char libcall_suffix;
-  const char *libcall_basename;
-  void (*libcall_gen)(struct optab_d *, const char *name, char suffix,
-		      enum machine_mode);
-  struct optab_handlers handlers[NUM_MACHINE_MODES];
-};
-typedef struct optab_d * optab;
-
-/* A convert_optab is for some sort of conversion operation between
-   modes.  The first array index is the destination mode, the second
-   is the source mode.  */
-struct convert_optab_d
-{
-  enum rtx_code code;
-  const char *libcall_basename;
-  void (*libcall_gen)(struct convert_optab_d *, const char *name,
-		      enum machine_mode,
-		      enum machine_mode);
-  struct optab_handlers handlers[NUM_MACHINE_MODES][NUM_MACHINE_MODES];
-};
-typedef struct convert_optab_d *convert_optab;
-
-/* Given an enum insn_code, access the function to construct
-   the body of that kind of insn.  */
-#define GEN_FCN(CODE) (insn_data[CODE].genfun)
-
-/* Enumeration of valid indexes into optab_table.  */
-enum optab_index
-{
-  /* Fixed-point operators with signed/unsigned saturation */
-  OTI_ssadd,
-  OTI_usadd,
-  OTI_sssub,
-  OTI_ussub,
-  OTI_ssmul,
-  OTI_usmul,
-  OTI_ssdiv,
-  OTI_usdiv,
-  OTI_ssneg,
-  OTI_usneg,
-  OTI_ssashl,
-  OTI_usashl,
-
-  OTI_add,
-  OTI_addv,
-  OTI_sub,
-  OTI_subv,
+/* Information about an operand for instruction expansion.  */
+struct expand_operand {
+  /* The type of operand.  */
+  ENUM_BITFIELD (expand_operand_type) type : 8;
 
-  /* Signed and fp multiply */
-  OTI_smul,
-  OTI_smulv,
-  /* Signed multiply, return high word */
-  OTI_smul_highpart,
-  OTI_umul_highpart,
-  /* Signed multiply with result one machine mode wider than args */
-  OTI_smul_widen,
-  OTI_umul_widen,
-  /* Widening multiply of one unsigned and one signed operand.  */
-  OTI_usmul_widen,
-  /* Signed multiply and add with the result and addend one machine mode
-     wider than the multiplicand and multiplier.  */
-  OTI_smadd_widen,
-  /* Unsigned multiply and add with the result and addend one machine mode
-     wider than the multiplicand and multiplier.  */
-  OTI_umadd_widen,
-  /* Signed multiply and add with the result and addend one machine mode
-     wider than the multiplicand and multiplier.
-     All involved operations are saturating.  */
-  OTI_ssmadd_widen,
-  /* Unsigned multiply and add with the result and addend one machine mode
-     wider than the multiplicand and multiplier.
-     All involved operations are saturating.  */
-  OTI_usmadd_widen,
-  /* Signed multiply and subtract the result and minuend one machine mode
-     wider than the multiplicand and multiplier.  */
-  OTI_smsub_widen,
-  /* Unsigned multiply and subtract the result and minuend one machine mode
-     wider than the multiplicand and multiplier.  */
-  OTI_umsub_widen,
-  /* Signed multiply and subtract the result and minuend one machine mode
-     wider than the multiplicand and multiplier.
-     All involved operations are saturating.  */
-  OTI_ssmsub_widen,
-  /* Unsigned multiply and subtract the result and minuend one machine mode
-     wider than the multiplicand and multiplier.
-     All involved operations are saturating.  */
-  OTI_usmsub_widen,
-
-  /* Signed divide */
-  OTI_sdiv,
-  OTI_sdivv,
-  /* Signed divide-and-remainder in one */
-  OTI_sdivmod,
-  OTI_udiv,
-  OTI_udivmod,
-  /* Signed remainder */
-  OTI_smod,
-  OTI_umod,
-  /* Floating point remainder functions */
-  OTI_fmod,
-  OTI_remainder,
-  /* Convert float to integer in float fmt */
-  OTI_ftrunc,
-
-  /* Logical and */
-  OTI_and,
-  /* Logical or */
-  OTI_ior,
-  /* Logical xor */
-  OTI_xor,
-
-  /* Arithmetic shift left */
-  OTI_ashl,
-  /* Logical shift right */
-  OTI_lshr,
-  /* Arithmetic shift right */
-  OTI_ashr,
-  /* Rotate left */
-  OTI_rotl,
-  /* Rotate right */
-  OTI_rotr,
-
-  /* Arithmetic shift left of vector by vector */
-  OTI_vashl,
-  /* Logical shift right of vector by vector */
-  OTI_vlshr,
-  /* Arithmetic shift right of vector by vector */
-  OTI_vashr,
-  /* Rotate left of vector by vector */
-  OTI_vrotl,
-  /* Rotate right of vector by vector */
-  OTI_vrotr,
-
-  /* Signed and floating-point minimum value */
-  OTI_smin,
-  /* Signed and floating-point maximum value */
-  OTI_smax,
-  /* Unsigned minimum value */
-  OTI_umin,
-  /* Unsigned maximum value */
-  OTI_umax,
-  /* Power */
-  OTI_pow,
-  /* Arc tangent of y/x */
-  OTI_atan2,
-  /* Floating multiply/add */
-  OTI_fma,
-  OTI_fms,
-  OTI_fnma,
-  OTI_fnms,
-
-  /* Move instruction.  */
-  OTI_mov,
-  /* Move, preserving high part of register.  */
-  OTI_movstrict,
-  /* Move, with a misaligned memory.  */
-  OTI_movmisalign,
-  /* Nontemporal store.  */
-  OTI_storent,
+  /* True if any conversion should treat VALUE as being unsigned
+     rather than signed.  Only meaningful for certain types.  */
+  unsigned int unsigned_p : 1;
 
-  /* Unary operations */
-  /* Negation */
-  OTI_neg,
-  OTI_negv,
-  /* Abs value */
-  OTI_abs,
-  OTI_absv,
-  /* Byteswap */
-  OTI_bswap,
-  /* Bitwise not */
-  OTI_one_cmpl,
-  /* Bit scanning and counting */
-  OTI_ffs,
-  OTI_clz,
-  OTI_ctz,
-  OTI_popcount,
-  OTI_parity,
-  /* Square root */
-  OTI_sqrt,
-  /* Sine-Cosine */
-  OTI_sincos,
-  /* Sine */
-  OTI_sin,
-  /* Inverse sine */
-  OTI_asin,
-  /* Cosine */
-  OTI_cos,
-  /* Inverse cosine */
-  OTI_acos,
-  /* Exponential */
-  OTI_exp,
-  /* Base-10 Exponential */
-  OTI_exp10,
-  /* Base-2 Exponential */
-  OTI_exp2,
-  /* Exponential - 1*/
-  OTI_expm1,
-  /* Load exponent of a floating point number */
-  OTI_ldexp,
-  /* Multiply floating-point number by integral power of radix */
-  OTI_scalb,
-  /* Mantissa of a floating-point number */
-  OTI_significand,
-  /* Radix-independent exponent */
-  OTI_logb,
-  OTI_ilogb,
-  /* Natural Logarithm */
-  OTI_log,
-  /* Base-10 Logarithm */
-  OTI_log10,
-  /* Base-2 Logarithm */
-  OTI_log2,
-  /* logarithm of 1 plus argument */
-  OTI_log1p,
-  /* Rounding functions */
-  OTI_floor,
-  OTI_ceil,
-  OTI_btrunc,
-  OTI_round,
-  OTI_nearbyint,
-  OTI_rint,
-  /* Tangent */
-  OTI_tan,
-  /* Inverse tangent */
-  OTI_atan,
-  /* Copy sign */
-  OTI_copysign,
-  /* Signbit */
-  OTI_signbit,
-  /* Test for infinite value */
-  OTI_isinf,
+  /* Is the target operand.  */
+  unsigned int target : 1;
 
-  /* Compare insn; two operands.  Used only for libcalls.  */
-  OTI_cmp,
-  OTI_ucmp,
-
-  /* Floating point comparison optabs - used primarily for libfuncs */
-  OTI_eq,
-  OTI_ne,
-  OTI_gt,
-  OTI_ge,
-  OTI_lt,
-  OTI_le,
-  OTI_unord,
+  /* Unused; available for future use.  */
+  unsigned int unused : 6;
 
-  /* String length */
-  OTI_strlen,
-
-  /* Combined compare & jump/move/store flags/trap operations.  */
-  OTI_cbranch,
-  OTI_cmov,
-  OTI_cstore,
-  OTI_ctrap,
-
-  /* Push instruction.  */
-  OTI_push,
-
-  /* Conditional add instruction.  */
-  OTI_addcc,
-
-  /* Reduction operations on a vector operand.  */
-  OTI_reduc_smax,
-  OTI_reduc_umax,
-  OTI_reduc_smin,
-  OTI_reduc_umin,
-  OTI_reduc_splus,
-  OTI_reduc_uplus,
-
-  /* Summation, with result machine mode one or more wider than args.  */
-  OTI_ssum_widen,
-  OTI_usum_widen,
-
-  /* Dot product, with result machine mode one or more wider than args.  */
-  OTI_sdot_prod,
-  OTI_udot_prod,
+  /* The mode passed to the convert_*_operand function.  It has a
+     type-dependent meaning.  */
+  ENUM_BITFIELD (machine_mode) mode : 16;
 
-  /* Set specified field of vector operand.  */
-  OTI_vec_set,
-  /* Extract specified field of vector operand.  */
-  OTI_vec_extract,
-  /* Extract even/odd fields of vector operands.  */
-  OTI_vec_extract_even,
-  OTI_vec_extract_odd,
-  /* Interleave fields of vector operands.  */
-  OTI_vec_interleave_high,
-  OTI_vec_interleave_low,
-  /* Initialize vector operand.  */
-  OTI_vec_init,
-  /* Whole vector shift. The shift amount is in bits.  */
-  OTI_vec_shl,
-  OTI_vec_shr,
-  /* Extract specified elements from vectors, for vector load.  */
-  OTI_vec_realign_load,
-  /* Widening multiplication.
-     The high/low part of the resulting vector of products is returned.  */
-  OTI_vec_widen_umult_hi,
-  OTI_vec_widen_umult_lo,
-  OTI_vec_widen_smult_hi,
-  OTI_vec_widen_smult_lo,
-  /* Extract and widen the high/low part of a vector of signed or
-     floating point elements.  */
-  OTI_vec_unpacks_hi,
-  OTI_vec_unpacks_lo,
-  /* Extract and widen the high/low part of a vector of unsigned
-     elements.  */
-  OTI_vec_unpacku_hi,
-  OTI_vec_unpacku_lo,
-
-  /* Extract, convert to floating point and widen the high/low part of
-     a vector of signed or unsigned integer elements.  */
-  OTI_vec_unpacks_float_hi,
-  OTI_vec_unpacks_float_lo,
-  OTI_vec_unpacku_float_hi,
-  OTI_vec_unpacku_float_lo,
-
-  /* Narrow (demote) and merge the elements of two vectors.  */
-  OTI_vec_pack_trunc,
-  OTI_vec_pack_usat,
-  OTI_vec_pack_ssat,
-
-  /* Convert to signed/unsigned integer, narrow and merge elements
-     of two vectors of floating point elements.  */
-  OTI_vec_pack_sfix_trunc,
-  OTI_vec_pack_ufix_trunc,
-
-  /* Perform a raise to the power of integer.  */
-  OTI_powi,
-
-  OTI_MAX
+  /* The value of the operand.  */
+  rtx value;
 };
 
-#define ssadd_optab (&optab_table[OTI_ssadd])
-#define usadd_optab (&optab_table[OTI_usadd])
-#define sssub_optab (&optab_table[OTI_sssub])
-#define ussub_optab (&optab_table[OTI_ussub])
-#define ssmul_optab (&optab_table[OTI_ssmul])
-#define usmul_optab (&optab_table[OTI_usmul])
-#define ssdiv_optab (&optab_table[OTI_ssdiv])
-#define usdiv_optab (&optab_table[OTI_usdiv])
-#define ssneg_optab (&optab_table[OTI_ssneg])
-#define usneg_optab (&optab_table[OTI_usneg])
-#define ssashl_optab (&optab_table[OTI_ssashl])
-#define usashl_optab (&optab_table[OTI_usashl])
+/* Initialize OP with the given fields.  Initialise the other fields
+   to their default values.  */
+
+static inline void
+create_expand_operand (struct expand_operand *op,
+		       enum expand_operand_type type,
+		       rtx value, machine_mode mode,
+		       bool unsigned_p)
+{
+  op->type = type;
+  op->unsigned_p = unsigned_p;
+  op->unused = 0;
+  op->mode = mode;
+  op->value = value;
+}
+
+/* Make OP describe an operand that must use rtx X, even if X is volatile.  */
+
+static inline void
+create_fixed_operand (struct expand_operand *op, rtx x)
+{
+  create_expand_operand (op, EXPAND_FIXED, x, VOIDmode, false);
+}
 
-#define add_optab (&optab_table[OTI_add])
-#define sub_optab (&optab_table[OTI_sub])
-#define smul_optab (&optab_table[OTI_smul])
-#define addv_optab (&optab_table[OTI_addv])
-#define subv_optab (&optab_table[OTI_subv])
-#define smul_highpart_optab (&optab_table[OTI_smul_highpart])
-#define umul_highpart_optab (&optab_table[OTI_umul_highpart])
-#define smul_widen_optab (&optab_table[OTI_smul_widen])
-#define umul_widen_optab (&optab_table[OTI_umul_widen])
-#define usmul_widen_optab (&optab_table[OTI_usmul_widen])
-#define smadd_widen_optab (&optab_table[OTI_smadd_widen])
-#define umadd_widen_optab (&optab_table[OTI_umadd_widen])
-#define ssmadd_widen_optab (&optab_table[OTI_ssmadd_widen])
-#define usmadd_widen_optab (&optab_table[OTI_usmadd_widen])
-#define smsub_widen_optab (&optab_table[OTI_smsub_widen])
-#define umsub_widen_optab (&optab_table[OTI_umsub_widen])
-#define ssmsub_widen_optab (&optab_table[OTI_ssmsub_widen])
-#define usmsub_widen_optab (&optab_table[OTI_usmsub_widen])
-#define sdiv_optab (&optab_table[OTI_sdiv])
-#define smulv_optab (&optab_table[OTI_smulv])
-#define sdivv_optab (&optab_table[OTI_sdivv])
-#define sdivmod_optab (&optab_table[OTI_sdivmod])
-#define udiv_optab (&optab_table[OTI_udiv])
-#define udivmod_optab (&optab_table[OTI_udivmod])
-#define smod_optab (&optab_table[OTI_smod])
-#define umod_optab (&optab_table[OTI_umod])
-#define fmod_optab (&optab_table[OTI_fmod])
-#define remainder_optab (&optab_table[OTI_remainder])
-#define ftrunc_optab (&optab_table[OTI_ftrunc])
-#define and_optab (&optab_table[OTI_and])
-#define ior_optab (&optab_table[OTI_ior])
-#define xor_optab (&optab_table[OTI_xor])
-#define ashl_optab (&optab_table[OTI_ashl])
-#define lshr_optab (&optab_table[OTI_lshr])
-#define ashr_optab (&optab_table[OTI_ashr])
-#define rotl_optab (&optab_table[OTI_rotl])
-#define rotr_optab (&optab_table[OTI_rotr])
-#define vashl_optab (&optab_table[OTI_vashl])
-#define vlshr_optab (&optab_table[OTI_vlshr])
-#define vashr_optab (&optab_table[OTI_vashr])
-#define vrotl_optab (&optab_table[OTI_vrotl])
-#define vrotr_optab (&optab_table[OTI_vrotr])
-#define smin_optab (&optab_table[OTI_smin])
-#define smax_optab (&optab_table[OTI_smax])
-#define umin_optab (&optab_table[OTI_umin])
-#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])
+/* Make OP describe an output operand that must have mode MODE.
+   X, if nonnull, is a suggestion for where the output should be stored.
+   It is OK for VALUE to be inconsistent with MODE, although it will just
+   be ignored in that case.  */
+
+static inline void
+create_output_operand (struct expand_operand *op, rtx x,
+		       machine_mode mode)
+{
+  create_expand_operand (op, EXPAND_OUTPUT, x, mode, false);
+}
 
-#define mov_optab (&optab_table[OTI_mov])
-#define movstrict_optab (&optab_table[OTI_movstrict])
-#define movmisalign_optab (&optab_table[OTI_movmisalign])
-#define storent_optab (&optab_table[OTI_storent])
+/* Make OP describe an input operand that must have mode MODE and
+   value VALUE; MODE cannot be VOIDmode.  The backend may request that
+   VALUE be copied into a different kind of rtx before being passed
+   as an operand.  */
+
+static inline void
+create_input_operand (struct expand_operand *op, rtx value,
+		      machine_mode mode)
+{
+  create_expand_operand (op, EXPAND_INPUT, value, mode, false);
+}
+
+/* Like create_input_operand, except that VALUE must first be converted
+   to mode MODE.  UNSIGNED_P says whether VALUE is unsigned.  */
 
-#define neg_optab (&optab_table[OTI_neg])
-#define negv_optab (&optab_table[OTI_negv])
-#define abs_optab (&optab_table[OTI_abs])
-#define absv_optab (&optab_table[OTI_absv])
-#define one_cmpl_optab (&optab_table[OTI_one_cmpl])
-#define bswap_optab (&optab_table[OTI_bswap])
-#define ffs_optab (&optab_table[OTI_ffs])
-#define clz_optab (&optab_table[OTI_clz])
-#define ctz_optab (&optab_table[OTI_ctz])
-#define popcount_optab (&optab_table[OTI_popcount])
-#define parity_optab (&optab_table[OTI_parity])
-#define sqrt_optab (&optab_table[OTI_sqrt])
-#define sincos_optab (&optab_table[OTI_sincos])
-#define sin_optab (&optab_table[OTI_sin])
-#define asin_optab (&optab_table[OTI_asin])
-#define cos_optab (&optab_table[OTI_cos])
-#define acos_optab (&optab_table[OTI_acos])
-#define exp_optab (&optab_table[OTI_exp])
-#define exp10_optab (&optab_table[OTI_exp10])
-#define exp2_optab (&optab_table[OTI_exp2])
-#define expm1_optab (&optab_table[OTI_expm1])
-#define ldexp_optab (&optab_table[OTI_ldexp])
-#define scalb_optab (&optab_table[OTI_scalb])
-#define significand_optab (&optab_table[OTI_significand])
-#define logb_optab (&optab_table[OTI_logb])
-#define ilogb_optab (&optab_table[OTI_ilogb])
-#define log_optab (&optab_table[OTI_log])
-#define log10_optab (&optab_table[OTI_log10])
-#define log2_optab (&optab_table[OTI_log2])
-#define log1p_optab (&optab_table[OTI_log1p])
-#define floor_optab (&optab_table[OTI_floor])
-#define ceil_optab (&optab_table[OTI_ceil])
-#define btrunc_optab (&optab_table[OTI_btrunc])
-#define round_optab (&optab_table[OTI_round])
-#define nearbyint_optab (&optab_table[OTI_nearbyint])
-#define rint_optab (&optab_table[OTI_rint])
-#define tan_optab (&optab_table[OTI_tan])
-#define atan_optab (&optab_table[OTI_atan])
-#define copysign_optab (&optab_table[OTI_copysign])
-#define signbit_optab (&optab_table[OTI_signbit])
-#define isinf_optab (&optab_table[OTI_isinf])
+static inline void
+create_convert_operand_to (struct expand_operand *op, rtx value,
+			   machine_mode mode, bool unsigned_p)
+{
+  create_expand_operand (op, EXPAND_CONVERT_TO, value, mode, unsigned_p);
+}
 
-#define cmp_optab (&optab_table[OTI_cmp])
-#define ucmp_optab (&optab_table[OTI_ucmp])
+/* Make OP describe an input operand that should have the same value
+   as VALUE, after any mode conversion that the backend might request.
+   If VALUE is a CONST_INT, it should be treated as having mode MODE.
+   UNSIGNED_P says whether VALUE is unsigned.  */
 
-#define eq_optab (&optab_table[OTI_eq])
-#define ne_optab (&optab_table[OTI_ne])
-#define gt_optab (&optab_table[OTI_gt])
-#define ge_optab (&optab_table[OTI_ge])
-#define lt_optab (&optab_table[OTI_lt])
-#define le_optab (&optab_table[OTI_le])
-#define unord_optab (&optab_table[OTI_unord])
+static inline void
+create_convert_operand_from (struct expand_operand *op, rtx value,
+			     machine_mode mode, bool unsigned_p)
+{
+  create_expand_operand (op, EXPAND_CONVERT_FROM, value, mode, unsigned_p);
+}
 
-#define strlen_optab (&optab_table[OTI_strlen])
 
-#define cbranch_optab (&optab_table[OTI_cbranch])
-#define cmov_optab (&optab_table[OTI_cmov])
-#define cstore_optab (&optab_table[OTI_cstore])
-#define ctrap_optab (&optab_table[OTI_ctrap])
-
-#define push_optab (&optab_table[OTI_push])
-#define addcc_optab (&optab_table[OTI_addcc])
+/* Make OP describe an input Pmode address operand.  VALUE is the value
+   of the address, but it may need to be converted to Pmode first.  */
 
-#define reduc_smax_optab (&optab_table[OTI_reduc_smax])
-#define reduc_umax_optab (&optab_table[OTI_reduc_umax])
-#define reduc_smin_optab (&optab_table[OTI_reduc_smin])
-#define reduc_umin_optab (&optab_table[OTI_reduc_umin])
-#define reduc_splus_optab (&optab_table[OTI_reduc_splus])
-#define reduc_uplus_optab (&optab_table[OTI_reduc_uplus])
+static inline void
+create_address_operand (struct expand_operand *op, rtx value)
+{
+  create_expand_operand (op, EXPAND_ADDRESS, value, Pmode, false);
+}
 
-#define ssum_widen_optab (&optab_table[OTI_ssum_widen])
-#define usum_widen_optab (&optab_table[OTI_usum_widen])
-#define sdot_prod_optab (&optab_table[OTI_sdot_prod])
-#define udot_prod_optab (&optab_table[OTI_udot_prod])
+/* Make OP describe an input operand that has value INTVAL and that has
+   no inherent mode.  This function should only be used for operands that
+   are always expand-time constants.  The backend may request that INTVAL
+   be copied into a different kind of rtx, but it must specify the mode
+   of that rtx if so.  */
 
-#define vec_set_optab (&optab_table[OTI_vec_set])
-#define vec_extract_optab (&optab_table[OTI_vec_extract])
-#define vec_extract_even_optab (&optab_table[OTI_vec_extract_even])
-#define vec_extract_odd_optab (&optab_table[OTI_vec_extract_odd])
-#define vec_interleave_high_optab (&optab_table[OTI_vec_interleave_high])
-#define vec_interleave_low_optab (&optab_table[OTI_vec_interleave_low])
-#define vec_init_optab (&optab_table[OTI_vec_init])
-#define vec_shl_optab (&optab_table[OTI_vec_shl])
-#define vec_shr_optab (&optab_table[OTI_vec_shr])
-#define vec_realign_load_optab (&optab_table[OTI_vec_realign_load])
-#define vec_widen_umult_hi_optab (&optab_table[OTI_vec_widen_umult_hi])
-#define vec_widen_umult_lo_optab (&optab_table[OTI_vec_widen_umult_lo])
-#define vec_widen_smult_hi_optab (&optab_table[OTI_vec_widen_smult_hi])
-#define vec_widen_smult_lo_optab (&optab_table[OTI_vec_widen_smult_lo])
-#define vec_unpacks_hi_optab (&optab_table[OTI_vec_unpacks_hi])
-#define vec_unpacks_lo_optab (&optab_table[OTI_vec_unpacks_lo])
-#define vec_unpacku_hi_optab (&optab_table[OTI_vec_unpacku_hi])
-#define vec_unpacku_lo_optab (&optab_table[OTI_vec_unpacku_lo])
-#define vec_unpacks_float_hi_optab (&optab_table[OTI_vec_unpacks_float_hi])
-#define vec_unpacks_float_lo_optab (&optab_table[OTI_vec_unpacks_float_lo])
-#define vec_unpacku_float_hi_optab (&optab_table[OTI_vec_unpacku_float_hi])
-#define vec_unpacku_float_lo_optab (&optab_table[OTI_vec_unpacku_float_lo])
-#define vec_pack_trunc_optab (&optab_table[OTI_vec_pack_trunc])
-#define vec_pack_ssat_optab (&optab_table[OTI_vec_pack_ssat])
-#define vec_pack_usat_optab (&optab_table[OTI_vec_pack_usat])
-#define vec_pack_sfix_trunc_optab (&optab_table[OTI_vec_pack_sfix_trunc])
-#define vec_pack_ufix_trunc_optab (&optab_table[OTI_vec_pack_ufix_trunc])
+static inline void
+create_integer_operand (struct expand_operand *op, HOST_WIDE_INT intval)
+{
+  create_expand_operand (op, EXPAND_INTEGER, GEN_INT (intval), VOIDmode, false);
+}
+
 
-#define powi_optab (&optab_table[OTI_powi])
-
-/* Conversion optabs have their own table and indexes.  */
-enum convert_optab_index
-{
-  COI_sext,
-  COI_zext,
-  COI_trunc,
-
-  COI_sfix,
-  COI_ufix,
-
-  COI_sfixtrunc,
-  COI_ufixtrunc,
+/* Passed to expand_simple_binop and expand_binop to say which options
+   to try to use if the requested operation can't be open-coded on the
+   requisite mode.  Either OPTAB_LIB or OPTAB_LIB_WIDEN says try using
+   a library call.  Either OPTAB_WIDEN or OPTAB_LIB_WIDEN says try
+   using a wider mode.  OPTAB_MUST_WIDEN says try widening and don't
+   try anything else.  */
 
-  COI_sfloat,
-  COI_ufloat,
-
-  COI_lrint,
-  COI_lround,
-  COI_lfloor,
-  COI_lceil,
-
-  COI_fract,
-  COI_fractuns,
-  COI_satfract,
-  COI_satfractuns,
-
-  COI_MAX
+enum optab_methods
+{
+  OPTAB_DIRECT,
+  OPTAB_LIB,
+  OPTAB_WIDEN,
+  OPTAB_LIB_WIDEN,
+  OPTAB_MUST_WIDEN
 };
 
-#define sext_optab (&convert_optab_table[COI_sext])
-#define zext_optab (&convert_optab_table[COI_zext])
-#define trunc_optab (&convert_optab_table[COI_trunc])
-#define sfix_optab (&convert_optab_table[COI_sfix])
-#define ufix_optab (&convert_optab_table[COI_ufix])
-#define sfixtrunc_optab (&convert_optab_table[COI_sfixtrunc])
-#define ufixtrunc_optab (&convert_optab_table[COI_ufixtrunc])
-#define sfloat_optab (&convert_optab_table[COI_sfloat])
-#define ufloat_optab (&convert_optab_table[COI_ufloat])
-#define lrint_optab (&convert_optab_table[COI_lrint])
-#define lround_optab (&convert_optab_table[COI_lround])
-#define lfloor_optab (&convert_optab_table[COI_lfloor])
-#define lceil_optab (&convert_optab_table[COI_lceil])
-#define fract_optab (&convert_optab_table[COI_fract])
-#define fractuns_optab (&convert_optab_table[COI_fractuns])
-#define satfract_optab (&convert_optab_table[COI_satfract])
-#define satfractuns_optab (&convert_optab_table[COI_satfractuns])
-
-/* 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
-  /* Conditional move operations.  */
-  DOI_movcc,
-#endif
-
-  /* Operations that use a scratch register to perform input and output
-     reloads of special objects.  */
-  DOI_reload_in,
-  DOI_reload_out,
-
-  /* Vector conditional operations.  */
-  DOI_vcond,
-  DOI_vcondu,
-
-  /* Block move operation.  */
-  DOI_movmem,
-
-  /* Block set operation.  */
-  DOI_setmem,
-
-  /* Various types of block compare operation.  */
-  DOI_cmpstr,
-  DOI_cmpstrn,
-  DOI_cmpmem,
-
-  /* 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,
-
-  /* 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,
-
-  /* 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
-};
-
-/* 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;
-
-#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];
-
-  /* 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];
-};
-
-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
-
-#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,
-                                      rtx target, int unsignedp);
-
-extern rtx expand_ternary_op (enum machine_mode mode, optab ternary_optab,
+extern rtx expand_widen_pattern_expr (struct separate_ops *, rtx , rtx , rtx,
+                                      rtx, int);
+extern rtx expand_ternary_op (machine_mode mode, optab ternary_optab,
 			      rtx op0, rtx op1, rtx op2, rtx target,
 			      int unsignedp);
+extern rtx simplify_expand_binop (machine_mode mode, optab binoptab,
+				  rtx op0, rtx op1, rtx target, int unsignedp,
+				  enum optab_methods methods);
+extern bool force_expand_binop (machine_mode, optab, rtx, rtx, rtx, int,
+				enum optab_methods);
+
+/* Generate code for a simple binary or unary operation.  "Simple" in
+   this case means "can be unambiguously described by a (mode, code)
+   pair and mapped to a single optab."  */
+extern rtx expand_simple_binop (machine_mode, enum rtx_code, rtx,
+				rtx, rtx, int, enum optab_methods);
 
 /* Expand a binary operation given optab and rtx operands.  */
-extern rtx expand_binop (enum machine_mode, optab, rtx, rtx, rtx, int,
+extern rtx expand_binop (machine_mode, optab, rtx, rtx, rtx, int,
 			 enum optab_methods);
 
-extern bool force_expand_binop (enum machine_mode, optab, rtx, rtx, rtx, int,
-				enum optab_methods);
-
 /* Expand a binary operation with both signed and unsigned forms.  */
-extern rtx sign_expand_binop (enum machine_mode, optab, optab, rtx, rtx,
+extern rtx sign_expand_binop (machine_mode, optab, optab, rtx, rtx,
 			      rtx, int, enum optab_methods);
 
 /* Generate code to perform an operation on one operand with two results.  */
@@ -775,39 +206,28 @@
    results, using a library function.  */
 extern bool expand_twoval_binop_libfunc (optab, rtx, rtx, rtx, rtx,
 					 enum rtx_code);
+extern rtx expand_simple_unop (machine_mode, enum rtx_code, rtx, rtx,
+			       int);
 
 /* Expand a unary arithmetic operation given optab rtx operand.  */
-extern rtx expand_unop (enum machine_mode, optab, rtx, rtx, int);
+extern rtx expand_unop (machine_mode, optab, rtx, rtx, int);
 
 /* Expand the absolute value operation.  */
-extern rtx expand_abs_nojump (enum machine_mode, rtx, rtx, int);
-extern rtx expand_abs (enum machine_mode, rtx, rtx, int, int);
+extern rtx expand_abs_nojump (machine_mode, rtx, rtx, int);
+extern rtx expand_abs (machine_mode, rtx, rtx, int, int);
 
 /* Expand the one's complement absolute value operation.  */
-extern rtx expand_one_cmpl_abs_nojump (enum machine_mode, rtx, rtx);
+extern rtx expand_one_cmpl_abs_nojump (machine_mode, rtx, rtx);
 
 /* Expand the copysign operation.  */
 extern rtx expand_copysign (rtx, rtx, rtx);
-
 /* Generate an instruction with a given INSN_CODE with an output and
    an input.  */
-extern void emit_unop_insn (int, rtx, rtx, enum rtx_code);
-extern bool maybe_emit_unop_insn (int, rtx, rtx, enum rtx_code);
+extern bool maybe_emit_unop_insn (enum insn_code, rtx, rtx, enum rtx_code);
+extern void emit_unop_insn (enum insn_code, rtx, rtx, enum rtx_code);
 
-/* An extra flag to control optab_for_tree_code's behavior.  This is needed to
-   distinguish between machines with a vector shift that takes a scalar for the
-   shift amount vs. machines that take a vector for the shift amount.  */
-enum optab_subtype
-{
-  optab_default,
-  optab_scalar,
-  optab_vector
-};
-
-/* Return the optab used for computing the given operation on the type given by
-   the second argument.  The third argument distinguishes between the types of
-   vector shifts and rotates */
-extern optab optab_for_tree_code (enum tree_code, const_tree, enum optab_subtype);
+/* Emit code to make a call to a constant function or a library call.  */
+extern void emit_libcall_block (rtx_insn *, rtx, rtx, rtx);
 
 /* The various uses that a comparison can have; used by can_compare_p:
    jumps, conditional moves, store flag operations.  */
@@ -820,24 +240,52 @@
 
 /* Nonzero if a compare of mode MODE can be done straightforwardly
    (without splitting it into pieces).  */
-extern int can_compare_p (enum rtx_code, enum machine_mode,
+extern int can_compare_p (enum rtx_code, machine_mode,
 			  enum can_compare_purpose);
+extern rtx prepare_operand (enum insn_code, rtx, int, machine_mode,
+			    machine_mode, int);
+/* Emit a pair of rtl insns to compare two rtx's and to jump
+   to a label if the comparison is true.  */
+extern void emit_cmp_and_jump_insns (rtx, rtx, enum rtx_code, rtx,
+				     machine_mode, int, rtx,
+				     profile_probability prob
+					= profile_probability::uninitialized ());
+
+/* Generate code to indirectly jump to a location given in the rtx LOC.  */
+extern void emit_indirect_jump (rtx);
+
+#include "insn-config.h"
+
+#ifndef GCC_INSN_CONFIG_H
+#error "insn-config.h must be included before optabs.h"
+#endif
 
-/* Return the INSN_CODE to use for an extend operation.  */
-extern enum insn_code can_extend_p (enum machine_mode, enum machine_mode, int);
+/* Emit a conditional move operation.  */
+rtx emit_conditional_move (rtx, enum rtx_code, rtx, rtx, machine_mode,
+			   rtx, rtx, machine_mode, int);
+
+/* Emit a conditional negate or bitwise complement operation.  */
+rtx emit_conditional_neg_or_complement (rtx, rtx_code, machine_mode, rtx,
+					 rtx, rtx);
+
+rtx emit_conditional_add (rtx, enum rtx_code, rtx, rtx, machine_mode,
+			  rtx, rtx, machine_mode, int);
+
+/* Create but don't emit one rtl instruction to perform certain operations.
+   Modes must match; operands must meet the operation's predicates.
+   Likewise for subtraction and for just copying.  */
+extern rtx_insn *gen_add2_insn (rtx, rtx);
+extern rtx_insn *gen_add3_insn (rtx, rtx, rtx);
+extern int have_add2_insn (rtx, rtx);
+extern rtx_insn *gen_addptr3_insn (rtx, rtx, rtx);
+extern int have_addptr3_insn (rtx, rtx, rtx);
+extern rtx_insn *gen_sub2_insn (rtx, rtx);
+extern rtx_insn *gen_sub3_insn (rtx, rtx, rtx);
+extern int have_sub2_insn (rtx, rtx);
 
 /* Generate the body of an insn to extend Y (with mode MFROM)
    into X (with mode MTO).  Do zero-extension if UNSIGNEDP is nonzero.  */
-extern rtx gen_extend_insn (rtx, rtx, enum machine_mode,
-			    enum machine_mode, int);
-
-/* Call this to reset the function entry for one optab.  */
-extern void set_optab_libfunc (optab, enum machine_mode, const char *);
-extern void set_conv_libfunc (convert_optab, enum machine_mode,
-			      enum machine_mode, const char *);
-
-/* Generate code for a FIXED_CONVERT_EXPR.  */
-extern void expand_fixed_convert (rtx, rtx, int, int);
+extern rtx_insn *gen_extend_insn (rtx, rtx, machine_mode, machine_mode, int);
 
 /* Generate code for a FLOAT_EXPR.  */
 extern void expand_float (rtx, rtx, int);
@@ -845,82 +293,64 @@
 /* Generate code for a FIX_EXPR.  */
 extern void expand_fix (rtx, rtx, int);
 
+/* Generate code for a FIXED_CONVERT_EXPR.  */
+extern void expand_fixed_convert (rtx, rtx, int, int);
+
 /* Generate code for float to integral conversion.  */
 extern bool expand_sfix_optab (rtx, rtx, convert_optab);
 
-/* Generate code for a widening multiply.  */
-extern rtx expand_widening_mult (enum machine_mode, rtx, rtx, rtx, int, optab);
+/* Report whether the machine description contains an insn which can
+   perform the operation described by CODE and MODE.  */
+extern int have_insn_for (enum rtx_code, machine_mode);
 
-/* Return tree if target supports vector operations for COND_EXPR.  */
-bool expand_vec_cond_expr_p (tree, enum machine_mode);
+/* Generate a conditional trap instruction.  */
+extern rtx_insn *gen_cond_trap (enum rtx_code, rtx, rtx, rtx);
+
+/* Generate code for VEC_PERM_EXPR.  */
+extern rtx expand_vec_perm (machine_mode, rtx, rtx, rtx, rtx);
+
+/* Generate code for vector comparison.  */
+extern rtx expand_vec_cmp_expr (tree, tree, rtx);
 
 /* Generate code for VEC_COND_EXPR.  */
 extern rtx expand_vec_cond_expr (tree, tree, tree, tree, rtx);
-/* Generate code for VEC_LSHIFT_EXPR and VEC_RSHIFT_EXPR.  */
-extern rtx expand_vec_shift_expr (sepops, rtx);
 
-/* 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.  */
+/* Generate code for MULT_HIGHPART_EXPR.  */
+extern rtx expand_mult_highpart (machine_mode, rtx, rtx, rtx, bool);
 
-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;
-}
+extern rtx expand_sync_lock_test_and_set (rtx, rtx, rtx);
+extern rtx expand_atomic_test_and_set (rtx, rtx, enum memmodel);
+extern rtx expand_atomic_exchange (rtx, rtx, rtx, enum memmodel);
+extern bool expand_atomic_compare_and_swap (rtx *, rtx *, rtx, rtx, rtx, bool,
+					    enum memmodel, enum memmodel);
+/* Generate memory barriers.  */
+extern void expand_mem_thread_fence (enum memmodel);
+extern void expand_mem_signal_fence (enum memmodel);
 
-/* 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));
-}
+rtx expand_atomic_load (rtx, rtx, enum memmodel);
+rtx expand_atomic_store (rtx, rtx, enum memmodel, bool);
+rtx expand_atomic_fetch_op (rtx, rtx, rtx, enum rtx_code, enum memmodel, 
+			      bool);
 
-/* 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.  */
+extern bool insn_operand_matches (enum insn_code icode, unsigned int opno,
+				  rtx operand);
+extern bool valid_multiword_target_p (rtx);
+extern void create_convert_operand_from_type (struct expand_operand *op,
+					      rtx value, tree type);
+extern bool maybe_legitimize_operands (enum insn_code icode,
+				       unsigned int opno, unsigned int nops,
+				       struct expand_operand *ops);
+extern rtx_insn *maybe_gen_insn (enum insn_code icode, unsigned int nops,
+				 struct expand_operand *ops);
+extern bool maybe_expand_insn (enum insn_code icode, unsigned int nops,
+			       struct expand_operand *ops);
+extern bool maybe_expand_jump_insn (enum insn_code icode, unsigned int nops,
+				    struct expand_operand *ops);
+extern void expand_insn (enum insn_code icode, unsigned int nops,
+			 struct expand_operand *ops);
+extern void expand_jump_insn (enum insn_code icode, unsigned int nops,
+			      struct expand_operand *ops);
 
-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.  */
+extern enum rtx_code get_rtx_code (enum tree_code tcode, bool unsignedp);
 
-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,
-			          enum machine_mode mode2);
 #endif /* GCC_OPTABS_H */