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;; PIC codegen for RISC-V for GNU compiler.
;; Copyright (C) 2011-2020 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<mode>"
[(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_s<SUBX: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_u<SUBX: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:load>u\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_load<ANYF: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
<softload>\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_32d<ANYF: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<mode>"
[(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])"
"<softload>\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_store<ANYI: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_store<ANYF: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
<softstore>\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_32d<ANYF: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_sf<SOFTF: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])"
"<softstore>\t%1,%0,%2"
[(set (attr "length") (const_int 8))])
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