;; Copyright (C) 2007-2021 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/. ;; ;; This file contains MIPS instructions that support fixed-point operations.

;; All supported fixed-point modes (define_mode_iterator FIXED [(QQ "") (HQ "") (SQ "") (DQ “TARGET_64BIT”) (UQQ "") (UHQ "") (USQ "") (UDQ “TARGET_64BIT”) (HA "") (SA "") (DA “TARGET_64BIT”) (UHA "") (USA "") (UDA “TARGET_64BIT”)])

;; For signed add/sub with saturation (define_mode_iterator ADDSUB [(HQ "") (SQ "") (HA "") (SA "") (V2HQ "") (V2HA "")]) (define_mode_attr addsubfmt [(HQ “ph”) (SQ “w”) (HA “ph”) (SA “w”) (V2HQ “ph”) (V2HA “ph”)])

;; For unsigned add/sub with saturation (define_mode_iterator UADDSUB [(UQQ “ISA_HAS_DSP”) (UHQ “ISA_HAS_DSPR2”) (UHA “ISA_HAS_DSPR2”) (V4UQQ “ISA_HAS_DSP”) (V2UHQ “ISA_HAS_DSPR2”) (V2UHA “ISA_HAS_DSPR2”)]) (define_mode_attr uaddsubfmt [(UQQ “qb”) (UHQ “ph”) (UHA “ph”) (V4UQQ “qb”) (V2UHQ “ph”) (V2UHA “ph”)])

;; For signed multiplication with saturation (define_mode_iterator MULQ [(V2HQ “ISA_HAS_DSP”) (HQ “ISA_HAS_DSP”) (SQ “ISA_HAS_DSPR2”)]) (define_mode_attr mulqfmt [(V2HQ “ph”) (HQ “ph”) (SQ “w”)])

(define_insn “add3” [(set (match_operand:FIXED 0 “register_operand” “=d”) (plus:FIXED (match_operand:FIXED 1 “register_operand” “d”) (match_operand:FIXED 2 “register_operand” “d”)))] "" “addu\t%0,%1,%2” [(set_attr “type” “arith”) (set_attr “mode” “”)])

(define_insn “usadd3” [(set (match_operand:UADDSUB 0 “register_operand” “=d”) (us_plus:UADDSUB (match_operand:UADDSUB 1 “register_operand” “d”) (match_operand:UADDSUB 2 “register_operand” “d”))) (set (reg:CCDSP CCDSP_OU_REGNUM) (unspec:CCDSP [(match_dup 1) (match_dup 2)] UNSPEC_ADDQ_S))] "" “addu_s.\t%0,%1,%2” [(set_attr “type” “arith”) (set_attr “mode” “”)])

(define_insn “ssadd3” [(set (match_operand:ADDSUB 0 “register_operand” “=d”) (ss_plus:ADDSUB (match_operand:ADDSUB 1 “register_operand” “d”) (match_operand:ADDSUB 2 “register_operand” “d”))) (set (reg:CCDSP CCDSP_OU_REGNUM) (unspec:CCDSP [(match_dup 1) (match_dup 2)] UNSPEC_ADDQ_S))] “ISA_HAS_DSP” “addq_s.\t%0,%1,%2” [(set_attr “type” “arith”) (set_attr “mode” “”)])

(define_insn “sub3” [(set (match_operand:FIXED 0 “register_operand” “=d”) (minus:FIXED (match_operand:FIXED 1 “register_operand” “d”) (match_operand:FIXED 2 “register_operand” “d”)))] "" “subu\t%0,%1,%2” [(set_attr “type” “arith”) (set_attr “mode” “”)])

(define_insn “ussub3” [(set (match_operand:UADDSUB 0 “register_operand” “=d”) (us_minus:UADDSUB (match_operand:UADDSUB 1 “register_operand” “d”) (match_operand:UADDSUB 2 “register_operand” “d”))) (set (reg:CCDSP CCDSP_OU_REGNUM) (unspec:CCDSP [(match_dup 1) (match_dup 2)] UNSPEC_SUBQ_S))] "" “subu_s.\t%0,%1,%2” [(set_attr “type” “arith”) (set_attr “mode” “”)])

(define_insn “sssub3” [(set (match_operand:ADDSUB 0 “register_operand” “=d”) (ss_minus:ADDSUB (match_operand:ADDSUB 1 “register_operand” “d”) (match_operand:ADDSUB 2 “register_operand” “d”))) (set (reg:CCDSP CCDSP_OU_REGNUM) (unspec:CCDSP [(match_dup 1) (match_dup 2)] UNSPEC_SUBQ_S))] “ISA_HAS_DSP” “subq_s.\t%0,%1,%2” [(set_attr “type” “arith”) (set_attr “mode” “”)])

(define_insn “ssmul3” [(set (match_operand:MULQ 0 “register_operand” “=d”) (ss_mult:MULQ (match_operand:MULQ 1 “register_operand” “d”) (match_operand:MULQ 2 “register_operand” “d”))) (set (reg:CCDSP CCDSP_OU_REGNUM) (unspec:CCDSP [(match_dup 1) (match_dup 2)] UNSPEC_MULQ_RS_PH)) (clobber (match_scratch:DI 3 “=x”))] "" “mulq_rs.\t%0,%1,%2” [(set_attr “type” “imul3”) (set_attr “mode” “”)])

(define_insn “ssmaddsqdq4” [(set (match_operand:DQ 0 “register_operand” “=a”) (ss_plus:DQ (ss_mult:DQ (sat_fract:DQ (match_operand:SQ 1 “register_operand” “d”)) (sat_fract:DQ (match_operand:SQ 2 “register_operand” “d”))) (match_operand:DQ 3 “register_operand” “0”))) (set (reg:CCDSP CCDSP_OU_REGNUM) (unspec:CCDSP [(match_dup 1) (match_dup 2) (match_dup 3)] UNSPEC_DPAQ_SA_L_W))] “ISA_HAS_DSP && !TARGET_64BIT” “dpaq_sa.l.w\t%q0,%1,%2” [(set_attr “type” “imadd”) (set_attr “mode” “SI”)])

(define_insn “ssmsubsqdq4” [(set (match_operand:DQ 0 “register_operand” “=a”) (ss_minus:DQ (match_operand:DQ 3 “register_operand” “0”) (ss_mult:DQ (sat_fract:DQ (match_operand:SQ 1 “register_operand” “d”)) (sat_fract:DQ (match_operand:SQ 2 “register_operand” “d”))))) (set (reg:CCDSP CCDSP_OU_REGNUM) (unspec:CCDSP [(match_dup 1) (match_dup 2) (match_dup 3)] UNSPEC_DPSQ_SA_L_W))] “ISA_HAS_DSP && !TARGET_64BIT” “dpsq_sa.l.w\t%q0,%1,%2” [(set_attr “type” “imadd”) (set_attr “mode” “SI”)])