175 lines
6.5 KiB
Markdown
175 lines
6.5 KiB
Markdown
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;; Operand and operator predicates for the GCC CRIS port.
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;; Copyright (C) 2005, 2007 Free Software Foundation, Inc.
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;; This file is part of GCC.
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;;
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;; GCC is free software; you can redistribute it and/or modify
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;; it under the terms of the GNU General Public License as published by
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;; the Free Software Foundation; either version 3, or (at your option)
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;; any later version.
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;;
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;; GCC is distributed in the hope that it will be useful,
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;; but WITHOUT ANY WARRANTY; without even the implied warranty of
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;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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;; GNU General Public License for more details.
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;;
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;; You should have received a copy of the GNU General Public License
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;; along with GCC; see the file COPYING3. If not see
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;; <http://www.gnu.org/licenses/>.
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;; Operator predicates.
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(define_predicate "cris_orthogonal_operator"
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(match_code "plus, minus, ior, and, umin"))
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(define_predicate "cris_commutative_orth_op"
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(match_code "plus, ior, and, umin"))
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;; By the name, you might think we should include MULT. We don't because
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;; it doesn't accept the same addressing modes as the others (only
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;; registers) and there's also the problem of handling TARGET_MUL_BUG.
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(define_predicate "cris_operand_extend_operator"
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(match_code "plus, minus, umin"))
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(define_predicate "cris_additive_operand_extend_operator"
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(match_code "plus, minus"))
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(define_predicate "cris_extend_operator"
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(match_code "zero_extend, sign_extend"))
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(define_predicate "cris_plus_or_bound_operator"
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(match_code "plus, umin"))
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;; Used as an operator to get a handle on a already-known-valid MEM rtx:es
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;; (no need to validate the address), where some address expression parts
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;; have their own match_operand.
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(define_predicate "cris_mem_op"
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(match_code "mem"))
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(define_predicate "cris_load_multiple_op"
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(and (match_code "parallel")
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(match_test "cris_movem_load_rest_p (op, 0)")))
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(define_predicate "cris_store_multiple_op"
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(and (match_code "parallel")
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(match_test "cris_store_multiple_op_p (op)")))
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;; Operand helper predicates.
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(define_predicate "cris_bdap_const_operand"
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(and (match_code "label_ref, symbol_ref, const_int, const_double, const")
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(ior (not (match_test "flag_pic"))
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(match_test "cris_valid_pic_const (op, true)"))))
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(define_predicate "cris_simple_address_operand"
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(ior (match_operand:SI 0 "register_operand")
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(and (match_code "post_inc")
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(match_test "register_operand (XEXP (op, 0), Pmode)"))))
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(define_predicate "cris_simple_operand"
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(ior (match_operand 0 "register_operand")
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(and (match_code "mem")
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(match_test "cris_simple_address_operand (XEXP (op, 0),
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Pmode)"))))
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;; The caller needs to use :SI.
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(define_predicate "cris_bdap_sign_extend_operand"
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; Disabled until <URL:http://gcc.gnu.org/ml/gcc-patches/2005-10/msg01376.html>
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; or <URL:http://gcc.gnu.org/ml/gcc-patches/2005-10/msg00940.html> is committed.
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(match_test "0"))
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; (and (match_code "sign_extend")
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; (and (match_test "MEM_P (XEXP (op, 0))")
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; (match_test "cris_simple_address_operand (XEXP (XEXP (op, 0), 0),
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; Pmode)"))))
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;; FIXME: Should not have to test for 1.
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(define_predicate "cris_scale_int_operand"
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(and (match_code "const_int")
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(ior (ior (match_test "op == GEN_INT (4)")
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(match_test "op == const2_rtx"))
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(match_test "op == const1_rtx"))))
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;; FIXME: Should be able to assume (reg int).
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(define_predicate "cris_biap_mult_operand"
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(and (match_code "mult")
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(ior (and (match_test "register_operand (XEXP (op, 0), Pmode)")
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(match_test "cris_scale_int_operand (XEXP (op, 1), Pmode)"))
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(and (match_test "cris_scale_int_operand (XEXP (op, 0), Pmode)")
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(match_test "register_operand (XEXP (op, 1), Pmode)")))))
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;; Operand predicates.
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;; This checks a part of an address, the one that is not a plain register
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;; for an addressing mode using BDAP.
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;; Allowed operands are either:
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;; a) a register
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;; b) a CONST operand (but not a symbol when generating PIC)
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;; c) a [r] or [r+] in SImode, or sign-extend from HI or QI.
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(define_predicate "cris_bdap_operand"
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(ior (match_operand 0 "cris_bdap_const_operand")
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(ior (match_operand:SI 0 "cris_simple_operand")
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(match_operand:SI 0 "cris_bdap_sign_extend_operand"))))
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;; This is similar to cris_bdap_operand:
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;; It checks a part of an address, the one that is not a plain register
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;; for an addressing mode using BDAP or BIAP.
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;; Allowed operands are either:
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;; a) a register
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;; b) a CONST operand (but not a symbol when generating PIC)
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;; c) a mult of (1, 2 or 4) and a register
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;; d) a [r] or [r+] in SImode, or sign-extend from HI or QI. */
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(define_predicate "cris_bdap_biap_operand"
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(ior (match_operand 0 "cris_bdap_operand")
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(match_operand 0 "cris_biap_mult_operand")))
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;; Since with -fPIC, not all symbols are valid PIC symbols or indeed
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;; general_operands, we have to have a predicate that matches it for the
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;; "movsi" expander.
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;; FIXME: Can s/special_// when PR 20413 is fixed.
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(define_special_predicate "cris_general_operand_or_symbol"
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(ior (match_operand 0 "general_operand")
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(and (match_code "const, symbol_ref, label_ref")
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; The following test is actually just an assertion.
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(match_test "cris_pic_symbol_type_of (op) != cris_no_symbol"))))
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;; A predicate for the anon movsi expansion, one that fits a PCREL
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;; operand as well as general_operand.
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(define_special_predicate "cris_general_operand_or_pic_source"
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(ior (match_operand 0 "general_operand")
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(and (match_test "flag_pic")
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(match_test "cris_valid_pic_const (op, false)"))))
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;; Since a PLT symbol is not a general_operand, we have to have a
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;; predicate that matches it when we need it. We use this in the expanded
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;; "call" and "call_value" anonymous patterns.
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(define_predicate "cris_nonmemory_operand_or_callable_symbol"
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(ior (match_operand 0 "nonmemory_operand")
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(and (match_code "const")
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(and
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(match_test "GET_CODE (XEXP (op, 0)) == UNSPEC")
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(ior
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(match_test "XINT (XEXP (op, 0), 1) == CRIS_UNSPEC_PLT_PCREL")
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(match_test "XINT (XEXP (op, 0), 1) == CRIS_UNSPEC_PCREL"))))))
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;; This matches a (MEM (general_operand)) or
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;; (MEM (cris_general_operand_or_symbol)). The second one isn't a valid
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;; memory_operand, so we need this predicate to recognize call
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;; destinations before we change them to a PLT operand (by wrapping in
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;; UNSPEC CRIS_UNSPEC_PLT).
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(define_predicate "cris_mem_call_operand"
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(and (match_code "mem")
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(ior (match_operand 0 "memory_operand")
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(match_test "cris_general_operand_or_symbol (XEXP (op, 0),
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Pmode)"))))
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