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jlechner |
;; Machine Descriptions for R8C/M16C/M32C
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;; Copyright (C) 2005
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;; Free Software Foundation, Inc.
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;; Contributed by Red Hat.
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;;
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;; This file is part of GCC.
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;;
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;; GCC is free software; you can redistribute it and/or modify it
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;; under the terms of the GNU General Public License as published
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;; by the Free Software Foundation; either version 2, or (at your
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;; option) any later version.
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;;
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;; GCC is distributed in the hope that it will be useful, but WITHOUT
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;; ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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;; or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
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;; License for more details.
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;;
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;; You should have received a copy of the GNU General Public License
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;; along with GCC; see the file COPYING. If not, write to the Free
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;; Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA
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;; 02110-1301, USA.
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; conditionals - cmp, jcc, setcc, etc.
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; Until support for relaxing is supported in gas, we must assume that
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; short labels won't reach, so we must use long labels.
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; Unfortunately, there aren't any conditional jumps with long labels,
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; so instead we invert the conditional and jump around a regular jump.
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; Note that we can, at some point in the future, add code to omit the
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; "cmp" portion of the insn if the preceding insn happened to set the
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; right flags already. For example, a mov followed by a "cmp *,0" is
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; redundant; the move already set the Z flag.
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(define_insn "cbranchqi4"
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[(set (pc) (if_then_else
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(match_operator 0 "m32c_cmp_operator"
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[(match_operand:QI 1 "mrai_operand" "RqiSd,RqiSd,?Rmm,?Rmm")
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(match_operand:QI 2 "mrai_operand" "iRqiSd,?Rmm,iRqiSd,?Rmm")])
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(label_ref (match_operand 3 "" ""))
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(pc)))]
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""
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"cmp.b\t%2,%1\n\tj%C0\t1f\n\tjmp.a\t%l3\n1:"
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; "cmp.b\t%2,%1\n\tj%c0\t%l3"
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[(set_attr "flags" "oszc,oszc,oszc,oszc")]
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)
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(define_insn "cbranchhi4"
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[(set (pc) (if_then_else
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(match_operator 0 "m32c_cmp_operator"
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[(match_operand:HI 1 "mrai_operand" "Rhi,?Sd,Rhi,?Sd,?Rmm,?Rmm")
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(match_operand:HI 2 "mrai_operand" "iRhiSd,iRhiSd,?Rmm,?Rmm,iRhiSd,?Rmm")])
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(label_ref (match_operand 3 "" ""))
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(pc)))]
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""
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"cmp.w\t%2,%1\n\tj%C0\t1f\n\tjmp.a\t%l3\n1:"
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; "cmp.w\t%2,%1\n\tj%c0\t%l3"
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[(set_attr "flags" "oszc,oszc,oszc,oszc,oszc,oszc")]
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)
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(define_insn "cbranchpsi4"
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[(set (pc) (if_then_else
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(match_operator 0 "m32c_cmp_operator"
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[(match_operand:PSI 1 "mrai_operand" "RsiSd,RsiSd,?Rmm,?Rmm")
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(match_operand:PSI 2 "mrai_operand" "iRsiSd,?Rmm,iRsiSd,?Rmm")])
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(label_ref (match_operand 3 "" ""))
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(pc)))]
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"TARGET_A24"
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"cmp.l\t%2,%1\n\tj%C0\t1f\n\tjmp.a\t%l3\n1:"
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; "cmp.l\t%2,%1\n\tj%c0\t%l3"
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[(set_attr "flags" "oszc,oszc,oszc,oszc")]
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)
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