;; PIC codegen for RISC-V for GNU compiler. ;; Copyright (C) 2011-2021 Free Software Foundation, Inc. ;; Contributed by Andrew Waterman (andrew@sifive.com).
;; 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/.
;; Simplify PIC loads to static variables. ;; These should go away once we figure out how to emit auipc discretely.
(define_insn “*local_pic_load” [(set (match_operand:ANYI 0 “register_operand” “=r”) (mem:ANYI (match_operand 1 “absolute_symbolic_operand” "")))] “USE_LOAD_ADDRESS_MACRO (operands[1])” “<default_load>\t%0,%1” [(set (attr “length”) (const_int 8))])
(define_insn “*local_pic_load_sSUBX:mode” [(set (match_operand:SUPERQI 0 “register_operand” “=r”) (sign_extend:SUPERQI (mem:SUBX (match_operand 1 “absolute_symbolic_operand” ""))))] “USE_LOAD_ADDRESS_MACRO (operands[1])” “SUBX:load\t%0,%1” [(set (attr “length”) (const_int 8))])
(define_insn “*local_pic_load_uSUBX:mode” [(set (match_operand:SUPERQI 0 “register_operand” “=r”) (zero_extend:SUPERQI (mem:SUBX (match_operand 1 “absolute_symbolic_operand” ""))))] “USE_LOAD_ADDRESS_MACRO (operands[1])” “SUBX:loadu\t%0,%1” [(set (attr “length”) (const_int 8))])
;; We can support ANYF loads into X register if there is no double support ;; or if the target is 64-bit.
(define_insn “*local_pic_loadANYF:mode” [(set (match_operand:ANYF 0 “register_operand” “=f,*r”) (mem:ANYF (match_operand 1 “absolute_symbolic_operand” ""))) (clobber (match_scratch:P 2 “=r,X”))] “TARGET_HARD_FLOAT && USE_LOAD_ADDRESS_MACRO (operands[1]) && (!TARGET_DOUBLE_FLOAT || TARGET_64BIT)” “@ ANYF:load\t%0,%1,%2 \t%0,%1” [(set (attr “length”) (const_int 8))])
;; ??? For a 32-bit target with double float, a DF load into a X reg isn't ;; supported. ld is not valid in that case. Punt for now. Maybe add a split ;; for this later.
(define_insn “*local_pic_load_32dANYF:mode” [(set (match_operand:ANYF 0 “register_operand” “=f”) (mem:ANYF (match_operand 1 “absolute_symbolic_operand” ""))) (clobber (match_scratch:P 2 “=r”))] “TARGET_HARD_FLOAT && USE_LOAD_ADDRESS_MACRO (operands[1]) && (TARGET_DOUBLE_FLOAT && !TARGET_64BIT)” “ANYF:load\t%0,%1,%2” [(set (attr “length”) (const_int 8))])
(define_insn “*local_pic_load_sf” [(set (match_operand:SOFTF 0 “register_operand” “=r”) (mem:SOFTF (match_operand 1 “absolute_symbolic_operand” "")))] “!TARGET_HARD_FLOAT && USE_LOAD_ADDRESS_MACRO (operands[1])” “\t%0,%1” [(set (attr “length”) (const_int 8))])
;; Simplify PIC stores to static variables. ;; These should go away once we figure out how to emit auipc discretely.
(define_insn “*local_pic_storeANYI:mode” [(set (mem:ANYI (match_operand 0 “absolute_symbolic_operand” "")) (match_operand:ANYI 1 “reg_or_0_operand” “rJ”)) (clobber (match_scratch:P 2 “=&r”))] “USE_LOAD_ADDRESS_MACRO (operands[0])” “ANYI:store\t%z1,%0,%2” [(set (attr “length”) (const_int 8))])
(define_insn “*local_pic_storeANYF:mode” [(set (mem:ANYF (match_operand 0 “absolute_symbolic_operand” "")) (match_operand:ANYF 1 “register_operand” “f,*r”)) (clobber (match_scratch:P 2 “=r,&r”))] “TARGET_HARD_FLOAT && USE_LOAD_ADDRESS_MACRO (operands[0]) && (!TARGET_DOUBLE_FLOAT || TARGET_64BIT)” “@ ANYF:store\t%1,%0,%2 \t%1,%0,%2” [(set (attr “length”) (const_int 8))])
;; ??? For a 32-bit target with double float, a DF store from a X reg isn't ;; supported. sd is not valid in that case. Punt for now. Maybe add a split ;; for this later.
(define_insn “*local_pic_store_32dANYF:mode” [(set (match_operand:ANYF 0 “register_operand” “=f”) (mem:ANYF (match_operand 1 “absolute_symbolic_operand” ""))) (clobber (match_scratch:P 2 “=r”))] “TARGET_HARD_FLOAT && USE_LOAD_ADDRESS_MACRO (operands[1]) && (TARGET_DOUBLE_FLOAT && !TARGET_64BIT)” “ANYF:store\t%1,%0,%2” [(set (attr “length”) (const_int 8))])
(define_insn “*local_pic_store_sfSOFTF:mode” [(set (mem:SOFTF (match_operand 0 “absolute_symbolic_operand” "")) (match_operand:SOFTF 1 “register_operand” “r”)) (clobber (match_scratch:P 2 “=&r”))] “!TARGET_HARD_FLOAT && USE_LOAD_ADDRESS_MACRO (operands[0])” “\t%1,%0,%2” [(set (attr “length”) (const_int 8))])