;; Constraint definitions of Andes NDS32 cpu for GNU compiler ;; Copyright (C) 2012-2015 Free Software Foundation, Inc. ;; Contributed by Andes Technology Corporation. ;; ;; 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/.

;; Check 16.8.7 Defining Machine-Specific Constraints for detail.

;; NO contrains can be prefixed with: E F V X g i m n o p r s ;; Machine-dependent integer: I J K L M N O P ;; Machine-dependent floating: G H

(define_register_constraint “w” “(TARGET_ISA_V3 || TARGET_ISA_V3M) ? LOW_REGS : NO_REGS” “LOW register class $r0 ~ $r7 constraint for V3/V3M ISA”)

(define_register_constraint “l” “LOW_REGS” “LOW register class $r0 ~ $r7”)

(define_register_constraint “d” “MIDDLE_REGS” “MIDDLE register class $r0 ~ $r11, $r16 ~ $r19”)

(define_register_constraint “h” “HIGH_REGS” “HIGH register class $r12 ~ $r14, $r20 ~ $r31”)

(define_register_constraint “t” “R15_TA_REG” “Temporary Assist register $ta (i.e. $r15)”)

(define_register_constraint “k” “STACK_REG” “Stack register $sp”)

(define_constraint “Iu03” “Unsigned immediate 3-bit value” (and (match_code “const_int”) (match_test “ival < (1 << 3) && ival >= 0”)))

(define_constraint “In03” “Negative immediate 3-bit value in the range of -7 to 0” (and (match_code “const_int”) (match_test “IN_RANGE (ival, -7, 0)”)))

(define_constraint “Iu04” “Unsigned immediate 4-bit value” (and (match_code “const_int”) (match_test “ival < (1 << 4) && ival >= 0”)))

(define_constraint “Is05” “Signed immediate 5-bit value” (and (match_code “const_int”) (match_test “ival < (1 << 4) && ival >= -(1 << 4)”)))

(define_constraint “Iu05” “Unsigned immediate 5-bit value” (and (match_code “const_int”) (match_test “ival < (1 << 5) && ival >= 0”)))

(define_constraint “In05” “Negative immediate 5-bit value in the range of -31 to 0” (and (match_code “const_int”) (match_test “IN_RANGE (ival, -31, 0)”)))

;; Ip05 is special and dedicated for v3 movpi45 instruction. ;; movpi45 has imm5u field but the range is 16 ~ 47. (define_constraint “Ip05” “Unsigned immediate 5-bit value for movpi45 instruction with range 16-47” (and (match_code “const_int”) (match_test “ival < ((1 << 5) + 16) && ival >= (0 + 16) && (TARGET_ISA_V3 || TARGET_ISA_V3M)”)))

(define_constraint “Iu06” “Unsigned immediate 6-bit value constraint for addri36.sp instruction” (and (match_code “const_int”) (match_test “ival < (1 << 6) && ival >= 0 && (ival % 4 == 0) && (TARGET_ISA_V3 || TARGET_ISA_V3M)”)))

(define_constraint “Iu08” “Unsigned immediate 8-bit value” (and (match_code “const_int”) (match_test “ival < (1 << 8) && ival >= 0”)))

(define_constraint “Iu09” “Unsigned immediate 9-bit value” (and (match_code “const_int”) (match_test “ival < (1 << 9) && ival >= 0”)))

(define_constraint “Is10” “Signed immediate 10-bit value” (and (match_code “const_int”) (match_test “ival < (1 << 9) && ival >= -(1 << 9)”)))

(define_constraint “Is11” “Signed immediate 11-bit value” (and (match_code “const_int”) (match_test “ival < (1 << 10) && ival >= -(1 << 10)”)))

(define_constraint “Is15” “Signed immediate 15-bit value” (and (match_code “const_int”) (match_test “ival < (1 << 14) && ival >= -(1 << 14)”)))

(define_constraint “Iu15” “Unsigned immediate 15-bit value” (and (match_code “const_int”) (match_test “ival < (1 << 15) && ival >= 0”)))

;; Ic15 is special and dedicated for performance extension ;; ‘bclr’ (single-bit-clear) instruction. ;; It is used in andsi3 pattern and recognized for the immediate ;; which is NOT in the range of imm15u but OK for ‘bclr’ instruction. ;; (If the immediate value IS in the range of imm15u, ;; we can directly use ‘andi’ instruction.) (define_constraint “Ic15” “A constant which is not in the range of imm15u but ok for bclr instruction” (and (match_code “const_int”) (match_test “(ival & 0xffff8000) && nds32_can_use_bclr_p (ival)”)))

;; Ie15 is special and dedicated for performance extension ;; ‘bset’ (single-bit-set) instruction. ;; It is used in iorsi3 pattern and recognized for the immediate ;; which is NOT in the range of imm15u but OK for ‘bset’ instruction. ;; (If the immediate value IS in the range of imm15u, ;; we can directly use ‘ori’ instruction.) (define_constraint “Ie15” “A constant which is not in the range of imm15u but ok for bset instruction” (and (match_code “const_int”) (match_test “(ival & 0xffff8000) && nds32_can_use_bset_p (ival)”)))

;; It15 is special and dedicated for performance extension ;; ‘btgl’ (single-bit-toggle) instruction. ;; It is used in xorsi3 pattern and recognized for the immediate ;; which is NOT in the range of imm15u but OK for ‘btgl’ instruction. ;; (If the immediate value IS in the range of imm15u, ;; we can directly use ‘xori’ instruction.) (define_constraint “It15” “A constant which is not in the range of imm15u but ok for btgl instruction” (and (match_code “const_int”) (match_test “(ival & 0xffff8000) && nds32_can_use_btgl_p (ival)”)))

;; Ii15 is special and dedicated for v3 isa ;; ‘bitci’ (bit-clear-immediate) instruction. ;; It is used in andsi3 pattern and recognized for the immediate whose ;; (~ival) value is in the range of imm15u and OK for ‘bitci’ instruction. ;; For example, ‘andi $r0,$r0,0xfffffffc’ can be presented ; with ‘bitci $r0,$r0,3’. (define_constraint “Ii15” “A constant whose compliment value is in the range of imm15u and ok for bitci instruction” (and (match_code “const_int”) (match_test “nds32_can_use_bitci_p (ival)”)))

(define_constraint “Is16” “Signed immediate 16-bit value” (and (match_code “const_int”) (match_test “ival < (1 << 15) && ival >= -(1 << 15)”)))

(define_constraint “Is17” “Signed immediate 17-bit value” (and (match_code “const_int”) (match_test “ival < (1 << 16) && ival >= -(1 << 16)”)))

(define_constraint “Is19” “Signed immediate 19-bit value” (and (match_code “const_int”) (match_test “ival < (1 << 18) && ival >= -(1 << 18)”)))

(define_constraint “Is20” “Signed immediate 20-bit value” (and (match_code “const_int”) (match_test “ival < (1 << 19) && ival >= -(1 << 19)”)))

(define_constraint “Ihig” “The immediate value that can be simply set high 20-bit” (and (match_code “const_int”) (match_test “(ival != 0) && ((ival & 0xfff) == 0)”)))

(define_constraint “Izeb” “The immediate value 0xff” (and (match_code “const_int”) (match_test “(ival == 0xff)”)))

(define_constraint “Izeh” “The immediate value 0xffff” (and (match_code “const_int”) (match_test “(ival == 0xffff)”)))

(define_constraint “Ixls” “The immediate value 0x01” (and (match_code “const_int”) (match_test “TARGET_PERF_EXT && (ival == 0x1)”)))

(define_constraint “Ix11” “The immediate value 0x7ff” (and (match_code “const_int”) (match_test “TARGET_PERF_EXT && (ival == 0x7ff)”)))

(define_constraint “Ibms” “The immediate value with power of 2” (and (match_code “const_int”) (match_test “(TARGET_ISA_V3 || TARGET_ISA_V3M) && (IN_RANGE (exact_log2 (ival), 0, 7))”)))

(define_constraint “Ifex” “The immediate value with power of 2 minus 1” (and (match_code “const_int”) (match_test “(TARGET_ISA_V3 || TARGET_ISA_V3M) && (IN_RANGE (exact_log2 (ival + 1), 1, 8))”)))

(define_memory_constraint “U33” “Memory constraint for 333 format” (and (match_code “mem”) (match_test “nds32_mem_format (op) == ADDRESS_LO_REG_IMM3U”)))

(define_memory_constraint “U45” “Memory constraint for 45 format” (and (match_code “mem”) (match_test “(nds32_mem_format (op) == ADDRESS_REG) && (GET_MODE (op) == SImode)”)))

(define_memory_constraint “U37” “Memory constraint for 37 format” (and (match_code “mem”) (match_test “(nds32_mem_format (op) == ADDRESS_SP_IMM7U || nds32_mem_format (op) == ADDRESS_FP_IMM7U) && (GET_MODE (op) == SImode)”)))

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