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- /* Definitions for code generation pass of GNU compiler.
- Copyright (C) 2001-2019 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 3, 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 COPYING3. If not see
- <http://www.gnu.org/licenses/>. */
- #ifndef GCC_OPTABS_H
- #define GCC_OPTABS_H
- #include "optabs-query.h"
- #include "optabs-libfuncs.h"
- #include "vec-perm-indices.h"
- /* Generate code for a widening multiply. */
- extern rtx expand_widening_mult (machine_mode, rtx, rtx, rtx, int, optab);
- /* 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
- };
- /* Information about an operand for instruction expansion. */
- struct expand_operand {
- /* The type of operand. */
- ENUM_BITFIELD (expand_operand_type) type : 8;
- /* True if any conversion should treat VALUE as being unsigned
- rather than signed. Only meaningful for certain types. */
- unsigned int unsigned_p : 1;
- /* Is the target operand. */
- unsigned int target : 1;
- /* Unused; available for future use. */
- unsigned int unused : 6;
- /* The mode passed to the convert_*_operand function. It has a
- type-dependent meaning. */
- ENUM_BITFIELD (machine_mode) mode : 16;
- /* The value of the operand. */
- rtx value;
- /* The value of an EXPAND_INTEGER operand. */
- poly_int64 int_value;
- };
- /* 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, poly_int64 int_value = 0)
- {
- op->type = type;
- op->unsigned_p = unsigned_p;
- op->unused = 0;
- op->mode = mode;
- op->value = value;
- op->int_value = int_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);
- }
- /* 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);
- }
- /* 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. */
- 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);
- }
- /* 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. */
- 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);
- }
- /* 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. */
- static inline void
- create_address_operand (struct expand_operand *op, rtx value)
- {
- create_expand_operand (op, EXPAND_ADDRESS, value, Pmode, false);
- }
- extern void create_integer_operand (struct expand_operand *, poly_int64);
- /* 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. */
- enum optab_methods
- {
- OPTAB_DIRECT,
- OPTAB_LIB,
- OPTAB_WIDEN,
- OPTAB_LIB_WIDEN,
- OPTAB_MUST_WIDEN
- };
- 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);
- extern rtx expand_vector_broadcast (machine_mode, rtx);
- /* 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 (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 (machine_mode, optab, optab, rtx, rtx,
- rtx, int, enum optab_methods);
- /* Generate code to perform an operation on one operand with two results. */
- extern int expand_twoval_unop (optab, rtx, rtx, rtx, int);
- /* Generate code to perform an operation on two operands with two results. */
- extern int expand_twoval_binop (optab, rtx, rtx, rtx, rtx, int);
- /* Generate code to perform an operation on two operands with two
- 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 (machine_mode, optab, rtx, rtx, int);
- /* Expand the absolute value operation. */
- 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 (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 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);
- /* 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. */
- 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 (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
- /* 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_insn *gen_extend_insn (rtx, rtx, machine_mode, machine_mode, int);
- /* Generate code for a FLOAT_EXPR. */
- extern void expand_float (rtx, rtx, int);
- /* 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);
- /* 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);
- /* 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_var (machine_mode, rtx, rtx, rtx, rtx);
- extern rtx expand_vec_perm_const (machine_mode, rtx, rtx,
- const vec_perm_builder &, machine_mode, 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_SERIES_EXPR. */
- extern rtx expand_vec_series_expr (machine_mode, rtx, rtx, rtx);
- /* Generate code for MULT_HIGHPART_EXPR. */
- extern rtx expand_mult_highpart (machine_mode, rtx, rtx, rtx, bool);
- 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);
- 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);
- 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);
- extern enum rtx_code get_rtx_code (enum tree_code tcode, bool unsignedp);
- #endif /* GCC_OPTABS_H */
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