;; Load/Store Multiple patterns description of Andes NDS32 cpu for GNU compiler ;; Copyright (C) 2012-2015 Free Software Foundation, Inc. ;; Contributed by Andes Technology Corporation.for NDS32. ;; ;; 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/.

;; Load Multiple Insns. ;; ;; operands[0] is the first of the consecutive registers. ;; operands[1] is the first memory location. ;; operands[2] is the number of consecutive registers.

(define_expand “load_multiple” [(match_par_dup 3 [(set (match_operand:SI 0 "" "") (match_operand:SI 1 "" "")) (use (match_operand:SI 2 "" ""))])] "" { int maximum;

/* Because reduced-set regsiters has few registers (r0r5, r610, r15, r28r31, where ‘r15’ and 'r28r31' cannot be used for register allocation), using 8 registers for load_multiple may easily consume all of them. It makes register allocation/spilling hard to work. So we only allow maximum=4 registers for load_multiple under reduced-set registers. */ if (TARGET_REDUCED_REGS) maximum = 4; else maximum = 8;

/* Here are the conditions that must be all passed, otherwise we have to FAIL this rtx generation: 1. The number of consecutive registers must be integer. 2. Maximum 4 or 8 registers for lmw.bi instruction (based on this nds32-multiple.md design). 3. Minimum 2 registers for lmw.bi instruction (based on this nds32-multiple.md design). 4. operands[0] must be register for sure. 5. operands[1] must be memory for sure. 6. Do not cross $r15 register because it is not allocatable. */ if (GET_CODE (operands[2]) != CONST_INT || INTVAL (operands[2]) > maximum || INTVAL (operands[2]) < 2 || GET_CODE (operands[0]) != REG || GET_CODE (operands[1]) != MEM || REGNO (operands[0]) + INTVAL (operands[2]) > TA_REGNUM) FAIL;

/* For (mem addr), we force_reg on addr here, so that nds32_expand_load_multiple can easily use it. */ operands[3] = nds32_expand_load_multiple (REGNO (operands[0]), INTVAL (operands[2]), force_reg (SImode, XEXP (operands[1], 0)), operands[1]); })

;; Ordinary Load Multiple.

(define_insn “*lmwsi8” [(match_parallel 0 “nds32_load_multiple_operation” [(set (match_operand:SI 2 “register_operand” "") (mem:SI (match_operand:SI 1 “register_operand” “r”))) (set (match_operand:SI 3 “register_operand” "") (mem:SI (plus:SI (match_dup 1) (const_int 4)))) (set (match_operand:SI 4 “register_operand” "") (mem:SI (plus:SI (match_dup 1) (const_int 8)))) (set (match_operand:SI 5 “register_operand” "") (mem:SI (plus:SI (match_dup 1) (const_int 12)))) (set (match_operand:SI 6 “register_operand” "") (mem:SI (plus:SI (match_dup 1) (const_int 16)))) (set (match_operand:SI 7 “register_operand” "") (mem:SI (plus:SI (match_dup 1) (const_int 20)))) (set (match_operand:SI 8 “register_operand” "") (mem:SI (plus:SI (match_dup 1) (const_int 24)))) (set (match_operand:SI 9 “register_operand” "") (mem:SI (plus:SI (match_dup 1) (const_int 28))))])] “(XVECLEN (operands[0], 0) == 8)” “lmw.bi\t%2, [%1], %9, 0x0” [(set_attr “type” “load”) (set_attr “length” “4”)] )

(define_insn “*lmwsi7” [(match_parallel 0 “nds32_load_multiple_operation” [(set (match_operand:SI 2 “register_operand” "") (mem:SI (match_operand:SI 1 “register_operand” “r”))) (set (match_operand:SI 3 “register_operand” "") (mem:SI (plus:SI (match_dup 1) (const_int 4)))) (set (match_operand:SI 4 “register_operand” "") (mem:SI (plus:SI (match_dup 1) (const_int 8)))) (set (match_operand:SI 5 “register_operand” "") (mem:SI (plus:SI (match_dup 1) (const_int 12)))) (set (match_operand:SI 6 “register_operand” "") (mem:SI (plus:SI (match_dup 1) (const_int 16)))) (set (match_operand:SI 7 “register_operand” "") (mem:SI (plus:SI (match_dup 1) (const_int 20)))) (set (match_operand:SI 8 “register_operand” "") (mem:SI (plus:SI (match_dup 1) (const_int 24))))])] “(XVECLEN (operands[0], 0) == 7)” “lmw.bi\t%2, [%1], %8, 0x0” [(set_attr “type” “load”) (set_attr “length” “4”)] )

(define_insn “*lmwsi6” [(match_parallel 0 “nds32_load_multiple_operation” [(set (match_operand:SI 2 “register_operand” "") (mem:SI (match_operand:SI 1 “register_operand” “r”))) (set (match_operand:SI 3 “register_operand” "") (mem:SI (plus:SI (match_dup 1) (const_int 4)))) (set (match_operand:SI 4 “register_operand” "") (mem:SI (plus:SI (match_dup 1) (const_int 8)))) (set (match_operand:SI 5 “register_operand” "") (mem:SI (plus:SI (match_dup 1) (const_int 12)))) (set (match_operand:SI 6 “register_operand” "") (mem:SI (plus:SI (match_dup 1) (const_int 16)))) (set (match_operand:SI 7 “register_operand” "") (mem:SI (plus:SI (match_dup 1) (const_int 20))))])] “(XVECLEN (operands[0], 0) == 6)” “lmw.bi\t%2, [%1], %7, 0x0” [(set_attr “type” “load”) (set_attr “length” “4”)] )

(define_insn “*lmwsi5” [(match_parallel 0 “nds32_load_multiple_operation” [(set (match_operand:SI 2 “register_operand” "") (mem:SI (match_operand:SI 1 “register_operand” “r”))) (set (match_operand:SI 3 “register_operand” "") (mem:SI (plus:SI (match_dup 1) (const_int 4)))) (set (match_operand:SI 4 “register_operand” "") (mem:SI (plus:SI (match_dup 1) (const_int 8)))) (set (match_operand:SI 5 “register_operand” "") (mem:SI (plus:SI (match_dup 1) (const_int 12)))) (set (match_operand:SI 6 “register_operand” "") (mem:SI (plus:SI (match_dup 1) (const_int 16))))])] “(XVECLEN (operands[0], 0) == 5)” “lmw.bi\t%2, [%1], %6, 0x0” [(set_attr “type” “load”) (set_attr “length” “4”)] )

(define_insn “*lmwsi4” [(match_parallel 0 “nds32_load_multiple_operation” [(set (match_operand:SI 2 “register_operand” "") (mem:SI (match_operand:SI 1 “register_operand” “r”))) (set (match_operand:SI 3 “register_operand” "") (mem:SI (plus:SI (match_dup 1) (const_int 4)))) (set (match_operand:SI 4 “register_operand” "") (mem:SI (plus:SI (match_dup 1) (const_int 8)))) (set (match_operand:SI 5 “register_operand” "") (mem:SI (plus:SI (match_dup 1) (const_int 12))))])] “(XVECLEN (operands[0], 0) == 4)” “lmw.bi\t%2, [%1], %5, 0x0” [(set_attr “type” “load”) (set_attr “length” “4”)] )

(define_insn “*lmwsi3” [(match_parallel 0 “nds32_load_multiple_operation” [(set (match_operand:SI 2 “register_operand” "") (mem:SI (match_operand:SI 1 “register_operand” “r”))) (set (match_operand:SI 3 “register_operand” "") (mem:SI (plus:SI (match_dup 1) (const_int 4)))) (set (match_operand:SI 4 “register_operand” "") (mem:SI (plus:SI (match_dup 1) (const_int 8))))])] “(XVECLEN (operands[0], 0) == 3)” “lmw.bi\t%2, [%1], %4, 0x0” [(set_attr “type” “load”) (set_attr “length” “4”)] )

(define_insn “*lmwsi2” [(match_parallel 0 “nds32_load_multiple_operation” [(set (match_operand:SI 2 “register_operand” "") (mem:SI (match_operand:SI 1 “register_operand” “r”))) (set (match_operand:SI 3 “register_operand” "") (mem:SI (plus:SI (match_dup 1) (const_int 4))))])] “(XVECLEN (operands[0], 0) == 2)” “lmw.bi\t%2, [%1], %3, 0x0” [(set_attr “type” “load”) (set_attr “length” “4”)] )

;; Store Multiple Insns. ;; ;; operands[0] is the first memory location. ;; opernads[1] is the first of the consecutive registers. ;; operands[2] is the number of consecutive registers.

(define_expand “store_multiple” [(match_par_dup 3 [(set (match_operand:SI 0 "" "") (match_operand:SI 1 "" "")) (use (match_operand:SI 2 "" ""))])] "" { int maximum;

/* Because reduced-set regsiters has few registers (r0r5, r610, r15, r28r31, where ‘r15’ and 'r28r31' cannot be used for register allocation), using 8 registers for store_multiple may easily consume all of them. It makes register allocation/spilling hard to work. So we only allow maximum=4 registers for store_multiple under reduced-set registers. */ if (TARGET_REDUCED_REGS) maximum = 4; else maximum = 8;

/* Here are the conditions that must be all passed, otherwise we have to FAIL this rtx generation: 1. The number of consecutive registers must be integer. 2. Maximum 4 or 8 registers for smw.bi instruction (based on this nds32-multiple.md design). 3. Minimum 2 registers for smw.bi instruction (based on this nds32-multiple.md design). 4. operands[0] must be memory for sure. 5. operands[1] must be register for sure. 6. Do not cross $r15 register because it is not allocatable. */ if (GET_CODE (operands[2]) != CONST_INT || INTVAL (operands[2]) > maximum || INTVAL (operands[2]) < 2 || GET_CODE (operands[0]) != MEM || GET_CODE (operands[1]) != REG || REGNO (operands[1]) + INTVAL (operands[2]) > TA_REGNUM) FAIL;

/* For (mem addr), we force_reg on addr here, so that nds32_expand_store_multiple can easily use it. */ operands[3] = nds32_expand_store_multiple (REGNO (operands[1]), INTVAL (operands[2]), force_reg (SImode, XEXP (operands[0], 0)), operands[0]); })

;; Ordinary Store Multiple.

(define_insn “*stmsi8” [(match_parallel 0 “nds32_store_multiple_operation” [(set (mem:SI (match_operand:SI 1 “register_operand” “r”)) (match_operand:SI 2 “register_operand” "")) (set (mem:SI (plus:SI (match_dup 1) (const_int 4))) (match_operand:SI 3 “register_operand” "")) (set (mem:SI (plus:SI (match_dup 1) (const_int 8))) (match_operand:SI 4 “register_operand” "")) (set (mem:SI (plus:SI (match_dup 1) (const_int 12))) (match_operand:SI 5 “register_operand” "")) (set (mem:SI (plus:SI (match_dup 1) (const_int 16))) (match_operand:SI 6 “register_operand” "")) (set (mem:SI (plus:SI (match_dup 1) (const_int 20))) (match_operand:SI 7 “register_operand” "")) (set (mem:SI (plus:SI (match_dup 1) (const_int 24))) (match_operand:SI 8 “register_operand” "")) (set (mem:SI (plus:SI (match_dup 1) (const_int 28))) (match_operand:SI 9 “register_operand” ""))])] “(XVECLEN (operands[0], 0) == 8)” “smw.bi\t%2, [%1], %9, 0x0” [(set_attr “type” “store”) (set_attr “length” “4”)] )

(define_insn “*stmsi7” [(match_parallel 0 “nds32_store_multiple_operation” [(set (mem:SI (match_operand:SI 1 “register_operand” “r”)) (match_operand:SI 2 “register_operand” "")) (set (mem:SI (plus:SI (match_dup 1) (const_int 4))) (match_operand:SI 3 “register_operand” "")) (set (mem:SI (plus:SI (match_dup 1) (const_int 8))) (match_operand:SI 4 “register_operand” "")) (set (mem:SI (plus:SI (match_dup 1) (const_int 12))) (match_operand:SI 5 “register_operand” "")) (set (mem:SI (plus:SI (match_dup 1) (const_int 16))) (match_operand:SI 6 “register_operand” "")) (set (mem:SI (plus:SI (match_dup 1) (const_int 20))) (match_operand:SI 7 “register_operand” "")) (set (mem:SI (plus:SI (match_dup 1) (const_int 24))) (match_operand:SI 8 “register_operand” ""))])] “(XVECLEN (operands[0], 0) == 7)” “smw.bi\t%2, [%1], %8, 0x0” [(set_attr “type” “store”) (set_attr “length” “4”)] )

(define_insn “*stmsi6” [(match_parallel 0 “nds32_store_multiple_operation” [(set (mem:SI (match_operand:SI 1 “register_operand” “r”)) (match_operand:SI 2 “register_operand” "")) (set (mem:SI (plus:SI (match_dup 1) (const_int 4))) (match_operand:SI 3 “register_operand” "")) (set (mem:SI (plus:SI (match_dup 1) (const_int 8))) (match_operand:SI 4 “register_operand” "")) (set (mem:SI (plus:SI (match_dup 1) (const_int 12))) (match_operand:SI 5 “register_operand” "")) (set (mem:SI (plus:SI (match_dup 1) (const_int 16))) (match_operand:SI 6 “register_operand” "")) (set (mem:SI (plus:SI (match_dup 1) (const_int 20))) (match_operand:SI 7 “register_operand” ""))])] “(XVECLEN (operands[0], 0) == 6)” “smw.bi\t%2, [%1], %7, 0x0” [(set_attr “type” “store”) (set_attr “length” “4”)] )

(define_insn “*stmsi5” [(match_parallel 0 “nds32_store_multiple_operation” [(set (mem:SI (match_operand:SI 1 “register_operand” “r”)) (match_operand:SI 2 “register_operand” "")) (set (mem:SI (plus:SI (match_dup 1) (const_int 4))) (match_operand:SI 3 “register_operand” "")) (set (mem:SI (plus:SI (match_dup 1) (const_int 8))) (match_operand:SI 4 “register_operand” "")) (set (mem:SI (plus:SI (match_dup 1) (const_int 12))) (match_operand:SI 5 “register_operand” "")) (set (mem:SI (plus:SI (match_dup 1) (const_int 16))) (match_operand:SI 6 “register_operand” ""))])] “(XVECLEN (operands[0], 0) == 5)” “smw.bi\t%2, [%1], %6, 0x0” [(set_attr “type” “store”) (set_attr “length” “4”)] )

(define_insn “*stmsi4” [(match_parallel 0 “nds32_store_multiple_operation” [(set (mem:SI (match_operand:SI 1 “register_operand” “r”)) (match_operand:SI 2 “register_operand” "")) (set (mem:SI (plus:SI (match_dup 1) (const_int 4))) (match_operand:SI 3 “register_operand” "")) (set (mem:SI (plus:SI (match_dup 1) (const_int 8))) (match_operand:SI 4 “register_operand” "")) (set (mem:SI (plus:SI (match_dup 1) (const_int 12))) (match_operand:SI 5 “register_operand” ""))])] “(XVECLEN (operands[0], 0) == 4)” “smw.bi\t%2, [%1], %5, 0x0” [(set_attr “type” “store”) (set_attr “length” “4”)] )

(define_insn “*stmsi3” [(match_parallel 0 “nds32_store_multiple_operation” [(set (mem:SI (match_operand:SI 1 “register_operand” “r”)) (match_operand:SI 2 “register_operand” "")) (set (mem:SI (plus:SI (match_dup 1) (const_int 4))) (match_operand:SI 3 “register_operand” "")) (set (mem:SI (plus:SI (match_dup 1) (const_int 8))) (match_operand:SI 4 “register_operand” ""))])] “(XVECLEN (operands[0], 0) == 3)” “smw.bi\t%2, [%1], %4, 0x0” [(set_attr “type” “store”) (set_attr “length” “4”)] )

(define_insn “*stmsi2” [(match_parallel 0 “nds32_store_multiple_operation” [(set (mem:SI (match_operand:SI 1 “register_operand” “r”)) (match_operand:SI 2 “register_operand” "")) (set (mem:SI (plus:SI (match_dup 1) (const_int 4))) (match_operand:SI 3 “register_operand” ""))])] “(XVECLEN (operands[0], 0) == 2)” “smw.bi\t%2, [%1], %3, 0x0” [(set_attr “type” “store”) (set_attr “length” “4”)] )

;; Move a block of memory if it is word aligned and MORE than 2 words long. ;; We could let this apply for blocks of less than this, but it clobbers so ;; many registers that there is then probably a better way. ;; ;; operands[0] is the destination block of memory. ;; operands[1] is the source block of memory. ;; operands[2] is the number of bytes to move. ;; operands[3] is the known shared alignment.

(define_expand “movmemqi” [(match_operand:BLK 0 “general_operand” "") (match_operand:BLK 1 “general_operand” "") (match_operand:SI 2 “const_int_operand” "") (match_operand:SI 3 “const_int_operand” "")] "" { if (nds32_expand_movmemqi (operands[0], operands[1], operands[2], operands[3])) DONE;

FAIL; })

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