;; Machine description for AArch64 architecture. ;; Copyright (C) 2009-2015 Free Software Foundation, Inc. ;; Contributed by ARM Ltd. ;; ;; 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/.

(define_register_constraint “k” “STACK_REG” “@internal The stack register.”)

(define_register_constraint “Ucs” “CALLER_SAVE_REGS” “@internal The caller save registers.”)

(define_register_constraint “w” “FP_REGS” “Floating point and SIMD vector registers.”)

(define_register_constraint “x” “FP_LO_REGS” “Floating point and SIMD vector registers V0 - V15.”)

(define_constraint “I” “A constant that can be used with an ADD operation.” (and (match_code “const_int”) (match_test “aarch64_uimm12_shift (ival)”)))

(define_constraint “J” “A constant that can be used with a SUB operation (once negated).” (and (match_code “const_int”) (match_test “aarch64_uimm12_shift (-ival)”)))

;; We can't use the mode of a CONST_INT to determine the context in ;; which it is being used, so we must have a separate constraint for ;; each context.

(define_constraint “K” “A constant that can be used with a 32-bit logical operation.” (and (match_code “const_int”) (match_test “aarch64_bitmask_imm (ival, SImode)”)))

(define_constraint “L” “A constant that can be used with a 64-bit logical operation.” (and (match_code “const_int”) (match_test “aarch64_bitmask_imm (ival, DImode)”)))

(define_constraint “M” “A constant that can be used with a 32-bit MOV immediate operation.” (and (match_code “const_int”) (match_test “aarch64_move_imm (ival, SImode)”)))

(define_constraint “N” “A constant that can be used with a 64-bit MOV immediate operation.” (and (match_code “const_int”) (match_test “aarch64_move_imm (ival, DImode)”)))

(define_constraint “S” “A constraint that matches an absolute symbolic address.” (and (match_code “const,symbol_ref,label_ref”) (match_test “aarch64_symbolic_address_p (op)”)))

(define_constraint “Y” “Floating point constant zero.” (and (match_code “const_double”) (match_test “aarch64_float_const_zero_rtx_p (op)”)))

(define_constraint “Z” “Integer constant zero.” (match_test “op == const0_rtx”))

(define_constraint “Ush” “A constraint that matches an absolute symbolic address high part.” (and (match_code “high”) (match_test “aarch64_valid_symref (XEXP (op, 0), GET_MODE (XEXP (op, 0)))”)))

(define_constraint “Uss” “@internal A constraint that matches an immediate shift constant in SImode.” (and (match_code “const_int”) (match_test “(unsigned HOST_WIDE_INT) ival < 32”)))

(define_constraint “Usn” “A constant that can be used with a CCMN operation (once negated).” (and (match_code “const_int”) (match_test “IN_RANGE (ival, -31, 0)”)))

(define_constraint “Usd” “@internal A constraint that matches an immediate shift constant in DImode.” (and (match_code “const_int”) (match_test “(unsigned HOST_WIDE_INT) ival < 64”)))

(define_constraint “Usf” “@internal Usf is a symbol reference.” (match_code “symbol_ref”))

(define_constraint “UsM” “@internal A constraint that matches the immediate constant -1.” (match_test “op == constm1_rtx”))

(define_constraint “Ui1” “@internal A constraint that matches the immediate constant +1.” (match_test “op == const1_rtx”))

(define_constraint “Ui3” “@internal A constraint that matches the integers 0...4.” (and (match_code “const_int”) (match_test “(unsigned HOST_WIDE_INT) ival <= 4”)))

(define_constraint “Up3” “@internal A constraint that matches the integers 2^(0...4).” (and (match_code “const_int”) (match_test “(unsigned) exact_log2 (ival) <= 4”)))

(define_memory_constraint “Q” “A memory address which uses a single base register with no offset.” (and (match_code “mem”) (match_test “REG_P (XEXP (op, 0))”)))

(define_memory_constraint “Ump” “@internal A memory address suitable for a load/store pair operation.” (and (match_code “mem”) (match_test “aarch64_legitimate_address_p (GET_MODE (op), XEXP (op, 0), PARALLEL, 1)”)))

(define_memory_constraint “Utv” “@internal An address valid for loading/storing opaque structure types wider than TImode.” (and (match_code “mem”) (match_test “aarch64_simd_mem_operand_p (op)”)))

(define_constraint “Ufc” “A floating point constant which can be used with an
FMOV immediate operation.” (and (match_code “const_double”) (match_test “aarch64_float_const_representable_p (op)”)))

(define_constraint “Dn” “@internal A constraint that matches vector of immediates.” (and (match_code “const_vector”) (match_test “aarch64_simd_valid_immediate (op, GET_MODE (op), false, NULL)”)))

(define_constraint “Dh” “@internal A constraint that matches an immediate operand valid for
AdvSIMD scalar move in HImode.” (and (match_code “const_int”) (match_test “aarch64_simd_scalar_immediate_valid_for_move (op, HImode)”)))

(define_constraint “Dq” “@internal A constraint that matches an immediate operand valid for
AdvSIMD scalar move in QImode.” (and (match_code “const_int”) (match_test “aarch64_simd_scalar_immediate_valid_for_move (op, QImode)”)))

(define_constraint “Dl” “@internal A constraint that matches vector of immediates for left shifts.” (and (match_code “const_vector”) (match_test “aarch64_simd_shift_imm_p (op, GET_MODE (op), true)”)))

(define_constraint “Dr” “@internal A constraint that matches vector of immediates for right shifts.” (and (match_code “const_vector”) (match_test “aarch64_simd_shift_imm_p (op, GET_MODE (op), false)”))) (define_constraint “Dz” “@internal A constraint that matches vector of immediate zero.” (and (match_code “const_vector”) (match_test “aarch64_simd_imm_zero_p (op, GET_MODE (op))”)))

(define_constraint “Dd” “@internal A constraint that matches an immediate operand valid for AdvSIMD scalar.” (and (match_code “const_int”) (match_test “aarch64_simd_imm_scalar_p (op, GET_MODE (op))”)))