334 lines
10 KiB
C
334 lines
10 KiB
C
/* Definitions for code generation pass of GNU compiler.
|
||
Copyright (C) 2001 Free Software Foundation, Inc.
|
||
|
||
This file is part of GCC.
|
||
|
||
GCC is free software; you can redistribute it and/or modify
|
||
it under the terms of the GNU General Public License as published by
|
||
the Free Software Foundation; either version 2, or (at your option)
|
||
any later version.
|
||
|
||
GCC is distributed in the hope that it will be useful,
|
||
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||
GNU General Public License for more details.
|
||
|
||
You should have received a copy of the GNU General Public License
|
||
along with GCC; see the file COPYING. If not, write to
|
||
the Free Software Foundation, 59 Temple Place - Suite 330,
|
||
Boston, MA 02111-1307, USA. */
|
||
|
||
#ifndef GCC_OPTABS_H
|
||
#define GCC_OPTABS_H
|
||
|
||
#include "insn-codes.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.
|
||
|
||
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.
|
||
|
||
A few optabs, such as move_optab and cmp_optab, are used
|
||
by special code. */
|
||
|
||
typedef struct optab
|
||
{
|
||
enum rtx_code code;
|
||
struct {
|
||
enum insn_code insn_code;
|
||
rtx libfunc;
|
||
} handlers [NUM_MACHINE_MODES];
|
||
} * optab;
|
||
|
||
/* Given an enum insn_code, access the function to construct
|
||
the body of that kind of insn. */
|
||
#define GEN_FCN(CODE) (*insn_data[(int) (CODE)].genfun)
|
||
|
||
/* Enumeration of valid indexes into optab_table. */
|
||
enum optab_index
|
||
{
|
||
OTI_add,
|
||
OTI_addv,
|
||
OTI_sub,
|
||
OTI_subv,
|
||
|
||
/* 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,
|
||
|
||
/* Signed divide */
|
||
OTI_sdiv,
|
||
OTI_sdivv,
|
||
/* Signed divide-and-remainder in one */
|
||
OTI_sdivmod,
|
||
OTI_udiv,
|
||
OTI_udivmod,
|
||
/* Signed remainder */
|
||
OTI_smod,
|
||
OTI_umod,
|
||
/* 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,
|
||
/* 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,
|
||
|
||
/* Move instruction. */
|
||
OTI_mov,
|
||
/* Move, preserving high part of register. */
|
||
OTI_movstrict,
|
||
|
||
/* Unary operations */
|
||
/* Negation */
|
||
OTI_neg,
|
||
OTI_negv,
|
||
/* Abs value */
|
||
OTI_abs,
|
||
OTI_absv,
|
||
/* Bitwise not */
|
||
OTI_one_cmpl,
|
||
/* Find first bit set */
|
||
OTI_ffs,
|
||
/* Square root */
|
||
OTI_sqrt,
|
||
/* Sine */
|
||
OTI_sin,
|
||
/* Cosine */
|
||
OTI_cos,
|
||
|
||
/* Compare insn; two operands. */
|
||
OTI_cmp,
|
||
/* Used only for libcalls for unsigned comparisons. */
|
||
OTI_ucmp,
|
||
/* tst insn; compare one operand against 0 */
|
||
OTI_tst,
|
||
|
||
/* String length */
|
||
OTI_strlen,
|
||
|
||
/* Combined compare & jump/store flags/move operations. */
|
||
OTI_cbranch,
|
||
OTI_cmov,
|
||
OTI_cstore,
|
||
|
||
/* Push instruction. */
|
||
OTI_push,
|
||
|
||
OTI_MAX
|
||
};
|
||
|
||
extern optab optab_table[OTI_MAX];
|
||
|
||
#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 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 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 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 mov_optab (optab_table[OTI_mov])
|
||
#define movstrict_optab (optab_table[OTI_movstrict])
|
||
|
||
#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 ffs_optab (optab_table[OTI_ffs])
|
||
#define sqrt_optab (optab_table[OTI_sqrt])
|
||
#define sin_optab (optab_table[OTI_sin])
|
||
#define cos_optab (optab_table[OTI_cos])
|
||
|
||
#define cmp_optab (optab_table[OTI_cmp])
|
||
#define ucmp_optab (optab_table[OTI_ucmp])
|
||
#define tst_optab (optab_table[OTI_tst])
|
||
|
||
#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 push_optab (optab_table[OTI_push])
|
||
|
||
/* Tables of patterns for extending one integer mode to another. */
|
||
extern enum insn_code extendtab[MAX_MACHINE_MODE][MAX_MACHINE_MODE][2];
|
||
|
||
/* Tables of patterns for converting between fixed and floating point. */
|
||
extern enum insn_code fixtab[NUM_MACHINE_MODES][NUM_MACHINE_MODES][2];
|
||
extern enum insn_code fixtrunctab[NUM_MACHINE_MODES][NUM_MACHINE_MODES][2];
|
||
extern enum insn_code floattab[NUM_MACHINE_MODES][NUM_MACHINE_MODES][2];
|
||
|
||
/* 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) PARAMS ((rtx));
|
||
|
||
/* Indexed by the rtx-code for a conditional (eg. EQ, LT,...)
|
||
gives the gen_function to make a branch to test that condition. */
|
||
|
||
extern rtxfun bcc_gen_fctn[NUM_RTX_CODE];
|
||
|
||
/* Indexed by the rtx-code for a conditional (eg. EQ, LT,...)
|
||
gives the insn code to make a store-condition insn
|
||
to test that condition. */
|
||
|
||
extern enum insn_code setcc_gen_code[NUM_RTX_CODE];
|
||
|
||
#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];
|
||
#endif
|
||
|
||
/* This array records the insn_code of insns to perform block moves. */
|
||
extern enum insn_code movstr_optab[NUM_MACHINE_MODES];
|
||
|
||
/* This array records the insn_code of insns to perform block clears. */
|
||
extern enum insn_code clrstr_optab[NUM_MACHINE_MODES];
|
||
|
||
/* Define functions given in optabs.c. */
|
||
|
||
/* Expand a binary operation given optab and rtx operands. */
|
||
extern rtx expand_binop PARAMS ((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 PARAMS ((enum machine_mode, optab, optab, rtx,
|
||
rtx, rtx, int, enum optab_methods));
|
||
|
||
/* Generate code to perform an operation on two operands with two results. */
|
||
extern int expand_twoval_binop PARAMS ((optab, rtx, rtx, rtx, rtx, int));
|
||
|
||
/* Expand a unary arithmetic operation given optab rtx operand. */
|
||
extern rtx expand_unop PARAMS ((enum machine_mode, optab, rtx, rtx, int));
|
||
|
||
/* Expand the absolute value operation. */
|
||
extern rtx expand_abs PARAMS ((enum machine_mode, rtx, rtx, int, int));
|
||
|
||
/* Expand the complex absolute value operation. */
|
||
extern rtx expand_complex_abs PARAMS ((enum machine_mode, rtx, rtx, int));
|
||
|
||
/* Generate an instruction with a given INSN_CODE with an output and
|
||
an input. */
|
||
extern void emit_unop_insn PARAMS ((int, rtx, rtx, enum rtx_code));
|
||
|
||
/* Emit code to perform a series of operations on a multi-word quantity, one
|
||
word at a time. */
|
||
extern rtx emit_no_conflict_block PARAMS ((rtx, rtx, rtx, rtx, rtx));
|
||
|
||
/* Emit one rtl instruction to store zero in specified rtx. */
|
||
extern void emit_clr_insn PARAMS ((rtx));
|
||
|
||
/* Emit one rtl insn to store 1 in specified rtx assuming it contains 0. */
|
||
extern void emit_0_to_1_insn PARAMS ((rtx));
|
||
|
||
/* Emit one rtl insn to compare two rtx's. */
|
||
extern void emit_cmp_insn PARAMS ((rtx, rtx, enum rtx_code, rtx,
|
||
enum machine_mode, int));
|
||
|
||
/* The various uses that a comparison can have; used by can_compare_p:
|
||
jumps, conditional moves, store flag operations. */
|
||
enum can_compare_purpose
|
||
{
|
||
ccp_jump,
|
||
ccp_cmov,
|
||
ccp_store_flag
|
||
};
|
||
|
||
/* Nonzero if a compare of mode MODE can be done straightforwardly
|
||
(without splitting it into pieces). */
|
||
extern int can_compare_p PARAMS ((enum rtx_code, enum machine_mode,
|
||
enum can_compare_purpose));
|
||
|
||
extern rtx prepare_operand PARAMS ((int, rtx, int, enum machine_mode,
|
||
enum machine_mode, int));
|
||
|
||
/* Return the INSN_CODE to use for an extend operation. */
|
||
extern enum insn_code can_extend_p PARAMS ((enum machine_mode,
|
||
enum machine_mode, int));
|
||
|
||
/* 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 PARAMS ((rtx, rtx, enum machine_mode,
|
||
enum machine_mode, int));
|
||
|
||
/* Initialize the tables that control conversion between fixed and
|
||
floating values. */
|
||
extern void init_fixtab PARAMS ((void));
|
||
extern void init_floattab PARAMS ((void));
|
||
|
||
/* Generate code for a FLOAT_EXPR. */
|
||
extern void expand_float PARAMS ((rtx, rtx, int));
|
||
|
||
/* Generate code for a FIX_EXPR. */
|
||
extern void expand_fix PARAMS ((rtx, rtx, int));
|
||
|
||
#endif /* GCC_OPTABS_H */
|