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|
#!/bin/sh
# Generate mova.md, a file containing patterns that can be implemented
# using the h8sx mova instruction.
# Copyright (C) 2004-2013 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/>.
echo ";; -*- buffer-read-only: t -*-"
echo ";; Generated automatically from genmova.sh"
echo ";; Copyright (C) 2004-2013 Free Software Foundation, Inc."
echo ";;"
echo ";; This file is part of GCC."
echo ";;"
echo ";; GCC is free software; you can redistribute it and/or modify"
echo ";; it under the terms of the GNU General Public License as published by"
echo ";; the Free Software Foundation; either version 3, or (at your option)"
echo ";; any later version."
echo ";;"
echo ";; GCC is distributed in the hope that it will be useful,"
echo ";; but WITHOUT ANY WARRANTY; without even the implied warranty of"
echo ";; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the"
echo ";; GNU General Public License for more details."
echo ";;"
echo ";; You should have received a copy of the GNU General Public License"
echo ";; along with GCC; see the file COPYING3. If not see"
echo ";; <http://www.gnu.org/licenses/>."
# Loop over modes for the source operand (the index). Only 8-bit and
# 16-bit indices are allowed.
for s in QI HI; do
# Set $src to the operand syntax for this size of index.
case $s in
QI) src=%X1.b;;
HI) src=%T1.w;;
esac
# A match_operand for the source.
operand="(match_operand:$s 1 \"h8300_dst_operand\" \"0,rQ\")"
# Loop over the destination register's mode. The QI and HI versions use
# the same instructions as the SI ones, they just ignore the upper bits
# of the result.
for d in QI HI SI; do
# If the destination is larger than the source, include a
# zero_extend/plus pattern. We could also match zero extensions
# of memory without the plus, but it's not any smaller or faster
# than separate insns.
case $d:$s in
SI:QI | SI:HI | HI:QI)
cat <<EOF
(define_insn ""
[(set (match_operand:$d 0 "register_operand" "=r,r")
(plus:$d (zero_extend:$d $operand)
(match_operand:$d 2 "immediate_operand" "i,i")))]
"TARGET_H8300SX"
"mova/b.l @(%o2%C2,$src),%S0"
[(set_attr "length_table" "mova")
(set_attr "cc" "none")])
EOF
;;
esac
# Loop over the shift amount.
for shift in 1 2; do
case $shift in
1) opsize=w mult=2;;
2) opsize=l mult=4;;
esac
# Calculate the mask of bits that will be nonzero after the source
# has been extended and shifted.
case $s:$shift in
QI:1) mask=510;;
QI:2) mask=1020;;
HI:1) mask=131070;;
HI:2) mask=262140;;
esac
# There doesn't seem to be a well-established canonical form for
# some of the patterns we need. Emit both shift and multiplication
# patterns.
for form in mult ashift; do
case $form in
mult) amount=$mult;;
ashift) amount=$shift;;
esac
case $d:$s in
# If the source and destination are the same size, we can treat
# mova as a sort of multiply-add instruction.
QI:QI | HI:HI)
cat <<EOF
(define_insn ""
[(set (match_operand:$d 0 "register_operand" "=r,r")
(plus:$d ($form:$d $operand
(const_int $amount))
(match_operand:$d 2 "immediate_operand" "i,i")))]
"TARGET_H8300SX"
"mova/$opsize.l @(%o2%C2,$src),%S0"
[(set_attr "length_table" "mova")
(set_attr "cc" "none")])
EOF
;;
# Handle the cases where the source is smaller than the
# destination. Sometimes combine will keep the extension,
# sometimes it will use an AND.
SI:QI | SI:HI | HI:QI)
# Emit the forms that use zero_extend.
cat <<EOF
(define_insn ""
[(set (match_operand:$d 0 "register_operand" "=r,r")
($form:$d (zero_extend:$d $operand)
(const_int $amount)))]
"TARGET_H8300SX"
"mova/$opsize.l @(0,$src),%S0"
[(set_attr "length_table" "mova_zero")
(set_attr "cc" "none")])
(define_insn ""
[(set (match_operand:$d 0 "register_operand" "=r,r")
(plus:$d ($form:$d (zero_extend:$d $operand)
(const_int $amount))
(match_operand:$d 2 "immediate_operand" "i,i")))]
"TARGET_H8300SX"
"mova/$opsize.l @(%o2%C2,$src),%S0"
[(set_attr "length_table" "mova")
(set_attr "cc" "none")])
EOF
# Now emit the forms that use AND. When the index is a register,
# these forms are effectively $d-mode operations: the index will
# be a $d-mode REG or SUBREG. When the index is a memory
# location, we will have a paradoxical subreg such as:
#
# (and:SI (mult:SI (subreg:SI (mem:QI ...) 0)
# (const_int 4))
# (const_int 1020))
#
# Match the two case separately: a $d-mode register_operand
# or a $d-mode subreg of an $s-mode memory_operand. Match the
# memory form first since register_operand accepts mem subregs
# before reload.
memory="(match_operand:$s 1 \"memory_operand\" \"m\")"
memory="(subreg:$d $memory 0)"
register="(match_operand:$d 1 \"register_operand\" \"0\")"
for paradoxical in "$memory" "$register"; do
cat <<EOF
(define_insn ""
[(set (match_operand:$d 0 "register_operand" "=r")
(and:$d ($form:$d $paradoxical
(const_int $amount))
(const_int $mask)))]
"TARGET_H8300SX"
"mova/$opsize.l @(0,$src),%S0"
[(set_attr "length_table" "mova_zero")
(set_attr "cc" "none")])
(define_insn ""
[(set (match_operand:$d 0 "register_operand" "=r")
(plus:$d (and:$d ($form:$d $paradoxical
(const_int $amount))
(const_int $mask))
(match_operand:$d 2 "immediate_operand" "i")))]
"TARGET_H8300SX"
"mova/$opsize.l @(%o2%C2,$src),%S0"
[(set_attr "length_table" "mova")
(set_attr "cc" "none")])
EOF
done
;;
esac
done
done
done
done
|
