2149 lines
67 KiB
TableGen
2149 lines
67 KiB
TableGen
//===-- AVRInstrInfo.td - AVR Instruction defs -------------*- tablegen -*-===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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//
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// This file describes the AVR instructions in TableGen format.
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//
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//===----------------------------------------------------------------------===//
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include "AVRInstrFormats.td"
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//===----------------------------------------------------------------------===//
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// AVR Type Profiles
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//===----------------------------------------------------------------------===//
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def SDT_AVRCallSeqStart : SDCallSeqStart<[SDTCisVT<0, i16>, SDTCisVT<1, i16>]>;
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def SDT_AVRCallSeqEnd : SDCallSeqEnd<[SDTCisVT<0, i16>, SDTCisVT<1, i16>]>;
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def SDT_AVRCall : SDTypeProfile<0, -1, [SDTCisVT<0, iPTR>]>;
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def SDT_AVRWrapper : SDTypeProfile<1, 1, [SDTCisSameAs<0, 1>, SDTCisPtrTy<0>]>;
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def SDT_AVRBrcond : SDTypeProfile<0, 2,
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[SDTCisVT<0, OtherVT>, SDTCisVT<1, i8>]>;
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def SDT_AVRCmp : SDTypeProfile<0, 2, [SDTCisSameAs<0, 1>]>;
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def SDT_AVRTst : SDTypeProfile<0, 1, [SDTCisInt<0>]>;
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def SDT_AVRSelectCC : SDTypeProfile<1, 3, [SDTCisSameAs<0, 1>,
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SDTCisSameAs<1, 2>, SDTCisVT<3, i8>]>;
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//===----------------------------------------------------------------------===//
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// AVR Specific Node Definitions
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//===----------------------------------------------------------------------===//
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def AVRretflag : SDNode<"AVRISD::RET_FLAG", SDTNone,
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[SDNPHasChain, SDNPOptInGlue, SDNPVariadic]>;
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def AVRretiflag : SDNode<"AVRISD::RETI_FLAG", SDTNone,
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[SDNPHasChain, SDNPOptInGlue, SDNPVariadic]>;
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def AVRcallseq_start : SDNode<"ISD::CALLSEQ_START", SDT_AVRCallSeqStart,
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[SDNPHasChain, SDNPOutGlue]>;
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def AVRcallseq_end : SDNode<"ISD::CALLSEQ_END", SDT_AVRCallSeqEnd,
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[SDNPHasChain, SDNPOptInGlue, SDNPOutGlue]>;
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def AVRcall : SDNode<"AVRISD::CALL", SDT_AVRCall,
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[SDNPHasChain, SDNPOutGlue, SDNPOptInGlue, SDNPVariadic]>;
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def AVRWrapper : SDNode<"AVRISD::WRAPPER", SDT_AVRWrapper>;
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def AVRbrcond : SDNode<"AVRISD::BRCOND", SDT_AVRBrcond,
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[SDNPHasChain, SDNPInGlue]>;
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def AVRcmp : SDNode<"AVRISD::CMP", SDT_AVRCmp, [SDNPOutGlue]>;
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def AVRcmpc : SDNode<"AVRISD::CMPC", SDT_AVRCmp, [SDNPInGlue, SDNPOutGlue]>;
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def AVRtst : SDNode<"AVRISD::TST", SDT_AVRTst, [SDNPOutGlue]>;
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def AVRselectcc: SDNode<"AVRISD::SELECT_CC", SDT_AVRSelectCC, [SDNPInGlue]>;
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// Shift nodes.
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def AVRlsl : SDNode<"AVRISD::LSL", SDTIntUnaryOp>;
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def AVRlsr : SDNode<"AVRISD::LSR", SDTIntUnaryOp>;
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def AVRrol : SDNode<"AVRISD::ROL", SDTIntUnaryOp>;
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def AVRror : SDNode<"AVRISD::ROR", SDTIntUnaryOp>;
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def AVRasr : SDNode<"AVRISD::ASR", SDTIntUnaryOp>;
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def AVRlsl7 : SDNode<"AVRISD::LSL7", SDTIntUnaryOp>;
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def AVRlsr7 : SDNode<"AVRISD::LSR7", SDTIntUnaryOp>;
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def AVRasr7 : SDNode<"AVRISD::ASR7", SDTIntUnaryOp>;
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// Pseudo shift nodes for non-constant shift amounts.
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def AVRlslLoop : SDNode<"AVRISD::LSLLOOP", SDTIntShiftOp>;
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def AVRlsrLoop : SDNode<"AVRISD::LSRLOOP", SDTIntShiftOp>;
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def AVRrolLoop : SDNode<"AVRISD::ROLLOOP", SDTIntShiftOp>;
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def AVRrorLoop : SDNode<"AVRISD::RORLOOP", SDTIntShiftOp>;
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def AVRasrLoop : SDNode<"AVRISD::ASRLOOP", SDTIntShiftOp>;
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// SWAP node.
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def AVRSwap : SDNode<"AVRISD::SWAP", SDTIntUnaryOp>;
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//===----------------------------------------------------------------------===//
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// AVR Operands, Complex Patterns and Transformations Definitions.
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//===----------------------------------------------------------------------===//
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def imm8_neg_XFORM : SDNodeXForm<imm,
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[{
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return CurDAG->getTargetConstant(-N->getAPIntValue(), SDLoc(N), MVT::i8);
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}]>;
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def imm16_neg_XFORM : SDNodeXForm<imm,
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[{
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return CurDAG->getTargetConstant(-N->getAPIntValue(), SDLoc(N), MVT::i16);
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}]>;
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def imm0_63_neg : PatLeaf<(imm),
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[{
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int64_t val = -N->getSExtValue();
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return val >= 0 && val < 64;
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}], imm16_neg_XFORM>;
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def uimm6 : PatLeaf<(imm), [{ return isUInt<6>(N->getZExtValue()); }]>;
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// imm_com8_XFORM - Return the complement of a imm_com8 value
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def imm_com8_XFORM : SDNodeXForm<imm, [{
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return CurDAG->getTargetConstant(~((uint8_t)N->getZExtValue()), SDLoc(N),
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MVT::i8);
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}]>;
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// imm_com8 - Match an immediate that is a complement
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// of a 8-bit immediate.
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// Note: this pattern doesn't require an encoder method and such, as it's
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// only used on aliases (Pat<> and InstAlias<>). The actual encoding
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// is handled by the destination instructions, which use imm_com8.
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def imm_com8_asmoperand : AsmOperandClass { let Name = "ImmCom8"; }
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def imm_com8 : Operand<i8> {
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let ParserMatchClass = imm_com8_asmoperand;
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}
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def ioaddr_XFORM : SDNodeXForm<imm,
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[{
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uint8_t offset = Subtarget->getIORegisterOffset();
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return CurDAG->getTargetConstant(uint8_t(N->getZExtValue()) - offset,
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SDLoc(N), MVT::i8);
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}]>;
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def iobitpos8_XFORM : SDNodeXForm<imm,
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[{
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return CurDAG->getTargetConstant(Log2_32(uint8_t(N->getZExtValue())),
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SDLoc(N), MVT::i8);
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}]>;
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def iobitposn8_XFORM : SDNodeXForm<imm,
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[{
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return CurDAG->getTargetConstant(Log2_32(uint8_t(~N->getZExtValue())),
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SDLoc(N), MVT::i8);
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}]>;
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def ioaddr8 : PatLeaf<(imm),
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[{
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uint8_t offset = Subtarget->getIORegisterOffset();
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uint64_t val = N->getZExtValue() - offset;
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return val < 0x40;
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}], ioaddr_XFORM>;
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def lowioaddr8 : PatLeaf<(imm),
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[{
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uint8_t offset = Subtarget->getIORegisterOffset();
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uint64_t val = N->getZExtValue() - offset;
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return val < 0x20;
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}], ioaddr_XFORM>;
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def ioaddr16 : PatLeaf<(imm),
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[{
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uint8_t offset = Subtarget->getIORegisterOffset();
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uint64_t val = N->getZExtValue() - offset;
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return val < 0x3f;
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}], ioaddr_XFORM>;
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def iobitpos8 : PatLeaf<(imm),
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[{
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return isPowerOf2_32(uint8_t(N->getZExtValue()));
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}], iobitpos8_XFORM>;
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def iobitposn8 : PatLeaf<(imm),
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[{
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return isPowerOf2_32(uint8_t(~N->getZExtValue()));
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}], iobitposn8_XFORM>;
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def MemriAsmOperand : AsmOperandClass {
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let Name = "Memri";
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let ParserMethod = "parseMemriOperand";
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}
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/// Address operand for `reg+imm` used by STD and LDD.
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def memri : Operand<iPTR>
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{
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let MIOperandInfo = (ops PTRDISPREGS, i16imm);
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let PrintMethod = "printMemri";
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let EncoderMethod = "encodeMemri";
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let ParserMatchClass = MemriAsmOperand;
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}
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// Address operand for `SP+imm` used by STD{W}SPQRr
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def memspi : Operand<iPTR>
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{
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let MIOperandInfo = (ops GPRSP, i16imm);
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}
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def relbrtarget_7 : Operand<OtherVT>
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{
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let PrintMethod = "printPCRelImm";
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let EncoderMethod = "encodeRelCondBrTarget<AVR::fixup_7_pcrel>";
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}
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def brtarget_13 : Operand<OtherVT>
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{
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let PrintMethod = "printPCRelImm";
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let EncoderMethod = "encodeRelCondBrTarget<AVR::fixup_13_pcrel>";
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}
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// The target of a 22 or 16-bit call/jmp instruction.
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def call_target : Operand<iPTR>
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{
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let EncoderMethod = "encodeCallTarget";
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let DecoderMethod = "decodeCallTarget";
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}
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// A 16-bit address (which can lead to an R_AVR_16 relocation).
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def imm16 : Operand<i16>
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{
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let EncoderMethod = "encodeImm<AVR::fixup_16, 2>";
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}
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/// A 6-bit immediate used in the ADIW/SBIW instructions.
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def imm_arith6 : Operand<i16>
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{
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let EncoderMethod = "encodeImm<AVR::fixup_6_adiw, 0>";
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}
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/// An 8-bit immediate inside an instruction with the same format
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/// as the `LDI` instruction (the `FRdK` format).
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def imm_ldi8 : Operand<i8>
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{
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let EncoderMethod = "encodeImm<AVR::fixup_ldi, 0>";
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}
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/// A 5-bit port number used in SBIC and friends (the `FIOBIT` format).
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def imm_port5 : Operand<i8>
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{
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let EncoderMethod = "encodeImm<AVR::fixup_port5, 0>";
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}
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/// A 6-bit port number used in the `IN` instruction and friends (the
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/// `FIORdA` format.
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def imm_port6 : Operand<i8>
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{
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let EncoderMethod = "encodeImm<AVR::fixup_port6, 0>";
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}
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// Addressing mode pattern reg+imm6
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def addr : ComplexPattern<iPTR, 2, "SelectAddr", [], [SDNPWantRoot]>;
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// AsmOperand class for a pointer register.
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// Used with the LD/ST family of instructions.
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// See FSTLD in AVRInstrFormats.td
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def PtrRegAsmOperand : AsmOperandClass
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{
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let Name = "Reg";
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}
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// A special operand type for the LD/ST instructions.
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// It converts the pointer register number into a two-bit field used in the
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// instruction.
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def LDSTPtrReg : Operand<i16>
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{
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let MIOperandInfo = (ops PTRREGS);
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let EncoderMethod = "encodeLDSTPtrReg";
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let ParserMatchClass = PtrRegAsmOperand;
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}
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// A special operand type for the LDD/STD instructions.
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// It behaves identically to the LD/ST version, except restricts
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// the pointer registers to Y and Z.
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def LDDSTDPtrReg : Operand<i16>
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{
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let MIOperandInfo = (ops PTRDISPREGS);
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let EncoderMethod = "encodeLDSTPtrReg";
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let ParserMatchClass = PtrRegAsmOperand;
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}
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//===----------------------------------------------------------------------===//
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// AVR predicates for subtarget features
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//===----------------------------------------------------------------------===//
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def HasSRAM : Predicate<"Subtarget->hasSRAM()">,
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AssemblerPredicate<(all_of FeatureSRAM)>;
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def HasJMPCALL : Predicate<"Subtarget->hasJMPCALL()">,
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AssemblerPredicate<(all_of FeatureJMPCALL)>;
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def HasIJMPCALL : Predicate<"Subtarget->hasIJMPCALL()">,
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AssemblerPredicate<(all_of FeatureIJMPCALL)>;
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def HasEIJMPCALL : Predicate<"Subtarget->hasEIJMPCALL()">,
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AssemblerPredicate<(all_of FeatureEIJMPCALL)>;
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def HasADDSUBIW : Predicate<"Subtarget->hasADDSUBIW()">,
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AssemblerPredicate<(all_of FeatureADDSUBIW)>;
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def HasSmallStack : Predicate<"Subtarget->HasSmallStack()">,
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AssemblerPredicate<(all_of FeatureSmallStack)>;
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def HasMOVW : Predicate<"Subtarget->hasMOVW()">,
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AssemblerPredicate<(all_of FeatureMOVW)>;
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def HasLPM : Predicate<"Subtarget->hasLPM()">,
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AssemblerPredicate<(all_of FeatureLPM)>;
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def HasLPMX : Predicate<"Subtarget->hasLPMX()">,
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AssemblerPredicate<(all_of FeatureLPMX)>;
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def HasELPM : Predicate<"Subtarget->hasELPM()">,
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AssemblerPredicate<(all_of FeatureELPM)>;
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def HasELPMX : Predicate<"Subtarget->hasELPMX()">,
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AssemblerPredicate<(all_of FeatureELPMX)>;
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def HasSPM : Predicate<"Subtarget->hasSPM()">,
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AssemblerPredicate<(all_of FeatureSPM)>;
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def HasSPMX : Predicate<"Subtarget->hasSPMX()">,
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AssemblerPredicate<(all_of FeatureSPMX)>;
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def HasDES : Predicate<"Subtarget->hasDES()">,
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AssemblerPredicate<(all_of FeatureDES)>;
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def SupportsRMW : Predicate<"Subtarget->supportsRMW()">,
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AssemblerPredicate<(all_of FeatureRMW)>;
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def SupportsMultiplication : Predicate<"Subtarget->supportsMultiplication()">,
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AssemblerPredicate<(all_of FeatureMultiplication)>;
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def HasBREAK : Predicate<"Subtarget->hasBREAK()">,
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AssemblerPredicate<(all_of FeatureBREAK)>;
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def HasTinyEncoding : Predicate<"Subtarget->hasTinyEncoding()">,
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AssemblerPredicate<(all_of FeatureTinyEncoding)>;
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// AVR specific condition code. These correspond to AVR_*_COND in
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// AVRInstrInfo.td. They must be kept in synch.
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def AVR_COND_EQ : PatLeaf<(i8 0)>;
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def AVR_COND_NE : PatLeaf<(i8 1)>;
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def AVR_COND_GE : PatLeaf<(i8 2)>;
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def AVR_COND_LT : PatLeaf<(i8 3)>;
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def AVR_COND_SH : PatLeaf<(i8 4)>;
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def AVR_COND_LO : PatLeaf<(i8 5)>;
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def AVR_COND_MI : PatLeaf<(i8 6)>;
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def AVR_COND_PL : PatLeaf<(i8 7)>;
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//===----------------------------------------------------------------------===//
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//===----------------------------------------------------------------------===//
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// AVR Instruction list
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//===----------------------------------------------------------------------===//
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//===----------------------------------------------------------------------===//
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// ADJCALLSTACKDOWN/UP implicitly use/def SP because they may be expanded into
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// a stack adjustment and the codegen must know that they may modify the stack
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// pointer before prolog-epilog rewriting occurs.
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// Pessimistically assume ADJCALLSTACKDOWN / ADJCALLSTACKUP will become
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// sub / add which can clobber SREG.
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let Defs = [SP, SREG],
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Uses = [SP] in
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{
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def ADJCALLSTACKDOWN : Pseudo<(outs),
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(ins i16imm:$amt, i16imm:$amt2),
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"#ADJCALLSTACKDOWN",
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[(AVRcallseq_start timm:$amt, timm:$amt2)]>;
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// R31R30 is used to update SP, since it is a scratch reg and this instruction
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// is placed after the function call then R31R30 should be always free.
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//let Defs = [R31R30],
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//Uses = [R31R30] in
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//:TODO: if we enable this, the pseudo is killed because it looks dead
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def ADJCALLSTACKUP : Pseudo<(outs),
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(ins i16imm:$amt1, i16imm:$amt2),
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"#ADJCALLSTACKUP",
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[(AVRcallseq_end timm:$amt1, timm:$amt2)]>;
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}
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//===----------------------------------------------------------------------===//
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// Addition
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//===----------------------------------------------------------------------===//
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let isCommutable = 1,
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Constraints = "$src = $rd",
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Defs = [SREG] in
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{
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// ADD Rd, Rr
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// Adds two 8-bit registers.
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def ADDRdRr : FRdRr<0b0000,
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0b11,
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(outs GPR8:$rd),
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(ins GPR8:$src, GPR8:$rr),
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"add\t$rd, $rr",
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[(set i8:$rd, (add i8:$src, i8:$rr)),
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(implicit SREG)]>;
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// ADDW Rd+1:Rd, Rr+1:Rr
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// Pseudo instruction to add four 8-bit registers as two 16-bit values.
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//
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// Expands to:
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// add Rd, Rr
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// adc Rd+1, Rr+1
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def ADDWRdRr : Pseudo<(outs DREGS:$rd),
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(ins DREGS:$src, DREGS:$rr),
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"addw\t$rd, $rr",
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[(set i16:$rd, (add i16:$src, i16:$rr)),
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(implicit SREG)]>;
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// ADC Rd, Rr
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// Adds two 8-bit registers with carry.
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let Uses = [SREG] in
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def ADCRdRr : FRdRr<0b0001,
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0b11,
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(outs GPR8:$rd),
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(ins GPR8:$src, GPR8:$rr),
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"adc\t$rd, $rr",
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[(set i8:$rd, (adde i8:$src, i8:$rr)),
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(implicit SREG)]>;
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// ADCW Rd+1:Rd, Rr+1:Rr
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// Pseudo instruction to add four 8-bit registers as two 16-bit values with
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// carry.
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//
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// Expands to:
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// adc Rd, Rr
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// adc Rd+1, Rr+1
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let Uses = [SREG] in
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def ADCWRdRr : Pseudo<(outs DREGS:$rd),
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(ins DREGS:$src, DREGS:$rr),
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"adcw\t$rd, $rr",
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[(set i16:$rd, (adde i16:$src, i16:$rr)),
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(implicit SREG)]>;
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// AIDW Rd, k
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// Adds an immediate 6-bit value K to Rd, placing the result in Rd.
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def ADIWRdK : FWRdK<0b0,
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(outs IWREGS:$rd),
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(ins IWREGS:$src, imm_arith6:$k),
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"adiw\t$rd, $k",
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[(set i16:$rd, (add i16:$src, uimm6:$k)),
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(implicit SREG)]>,
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Requires<[HasADDSUBIW]>;
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}
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//===----------------------------------------------------------------------===//
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// Subtraction
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//===----------------------------------------------------------------------===//
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let Constraints = "$src = $rd",
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Defs = [SREG] in
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{
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// SUB Rd, Rr
|
|
// Subtracts the 8-bit value of Rr from Rd and places the value in Rd.
|
|
def SUBRdRr : FRdRr<0b0001,
|
|
0b10,
|
|
(outs GPR8:$rd),
|
|
(ins GPR8:$src, GPR8:$rr),
|
|
"sub\t$rd, $rr",
|
|
[(set i8:$rd, (sub i8:$src, i8:$rr)),
|
|
(implicit SREG)]>;
|
|
|
|
// SUBW Rd+1:Rd, Rr+1:Rr
|
|
// Subtracts two 16-bit values and places the result into Rd.
|
|
//
|
|
// Expands to:
|
|
// sub Rd, Rr
|
|
// sbc Rd+1, Rr+1
|
|
def SUBWRdRr : Pseudo<(outs DREGS:$rd),
|
|
(ins DREGS:$src, DREGS:$rr),
|
|
"subw\t$rd, $rr",
|
|
[(set i16:$rd, (sub i16:$src, i16:$rr)),
|
|
(implicit SREG)]>;
|
|
|
|
def SUBIRdK : FRdK<0b0101,
|
|
(outs LD8:$rd),
|
|
(ins LD8:$src, imm_ldi8:$k),
|
|
"subi\t$rd, $k",
|
|
[(set i8:$rd, (sub i8:$src, imm:$k)),
|
|
(implicit SREG)]>;
|
|
|
|
// SUBIW Rd+1:Rd, K+1:K
|
|
//
|
|
// Expands to:
|
|
// subi Rd, K
|
|
// sbci Rd+1, K+1
|
|
def SUBIWRdK : Pseudo<(outs DLDREGS:$rd),
|
|
(ins DLDREGS:$src, i16imm:$rr),
|
|
"subiw\t$rd, $rr",
|
|
[(set i16:$rd, (sub i16:$src, imm:$rr)),
|
|
(implicit SREG)]>;
|
|
|
|
def SBIWRdK : FWRdK<0b1,
|
|
(outs IWREGS:$rd),
|
|
(ins IWREGS:$src, imm_arith6:$k),
|
|
"sbiw\t$rd, $k",
|
|
[(set i16:$rd, (sub i16:$src, uimm6:$k)),
|
|
(implicit SREG)]>,
|
|
Requires<[HasADDSUBIW]>;
|
|
|
|
// Subtract with carry operations which must read the carry flag in SREG.
|
|
let Uses = [SREG] in
|
|
{
|
|
def SBCRdRr : FRdRr<0b0000,
|
|
0b10,
|
|
(outs GPR8:$rd),
|
|
(ins GPR8:$src, GPR8:$rr),
|
|
"sbc\t$rd, $rr",
|
|
[(set i8:$rd, (sube i8:$src, i8:$rr)),
|
|
(implicit SREG)]>;
|
|
|
|
// SBCW Rd+1:Rd, Rr+1:Rr
|
|
//
|
|
// Expands to:
|
|
// sbc Rd, Rr
|
|
// sbc Rd+1, Rr+1
|
|
def SBCWRdRr : Pseudo<(outs DREGS:$rd),
|
|
(ins DREGS:$src, DREGS:$rr),
|
|
"sbcw\t$rd, $rr",
|
|
[(set i16:$rd, (sube i16:$src, i16:$rr)),
|
|
(implicit SREG)]>;
|
|
|
|
def SBCIRdK : FRdK<0b0100,
|
|
(outs LD8:$rd),
|
|
(ins LD8:$src, imm_ldi8:$k),
|
|
"sbci\t$rd, $k",
|
|
[(set i8:$rd, (sube i8:$src, imm:$k)),
|
|
(implicit SREG)]>;
|
|
|
|
// SBCIW Rd+1:Rd, K+1:K
|
|
// sbci Rd, K
|
|
// sbci Rd+1, K+1
|
|
def SBCIWRdK : Pseudo<(outs DLDREGS:$rd),
|
|
(ins DLDREGS:$src, i16imm:$rr),
|
|
"sbciw\t$rd, $rr",
|
|
[(set i16:$rd, (sube i16:$src, imm:$rr)),
|
|
(implicit SREG)]>;
|
|
}
|
|
}
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// Increment and Decrement
|
|
//===----------------------------------------------------------------------===//
|
|
let Constraints = "$src = $rd",
|
|
Defs = [SREG] in
|
|
{
|
|
def INCRd : FRd<0b1001,
|
|
0b0100011,
|
|
(outs GPR8:$rd),
|
|
(ins GPR8:$src),
|
|
"inc\t$rd",
|
|
[(set i8:$rd, (add i8:$src, 1)), (implicit SREG)]>;
|
|
|
|
def DECRd : FRd<0b1001,
|
|
0b0101010,
|
|
(outs GPR8:$rd),
|
|
(ins GPR8:$src),
|
|
"dec\t$rd",
|
|
[(set i8:$rd, (add i8:$src, -1)), (implicit SREG)]>;
|
|
}
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// Multiplication
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
let isCommutable = 1,
|
|
Defs = [R1, R0, SREG] in
|
|
{
|
|
// MUL Rd, Rr
|
|
// Multiplies Rd by Rr and places the result into R1:R0.
|
|
let usesCustomInserter = 1 in {
|
|
def MULRdRr : FRdRr<0b1001, 0b11,
|
|
(outs),
|
|
(ins GPR8:$lhs, GPR8:$rhs),
|
|
"mul\t$lhs, $rhs",
|
|
[/*(set R1, R0, (smullohi i8:$lhs, i8:$rhs))*/]>,
|
|
Requires<[SupportsMultiplication]>;
|
|
|
|
def MULSRdRr : FMUL2RdRr<0,
|
|
(outs),
|
|
(ins LD8:$lhs, LD8:$rhs),
|
|
"muls\t$lhs, $rhs",
|
|
[]>,
|
|
Requires<[SupportsMultiplication]>;
|
|
}
|
|
|
|
def MULSURdRr : FMUL2RdRr<1,
|
|
(outs),
|
|
(ins LD8lo:$lhs, LD8lo:$rhs),
|
|
"mulsu\t$lhs, $rhs",
|
|
[]>,
|
|
Requires<[SupportsMultiplication]>;
|
|
|
|
def FMUL : FFMULRdRr<0b01,
|
|
(outs),
|
|
(ins LD8lo:$lhs, LD8lo:$rhs),
|
|
"fmul\t$lhs, $rhs",
|
|
[]>,
|
|
Requires<[SupportsMultiplication]>;
|
|
|
|
def FMULS : FFMULRdRr<0b10,
|
|
(outs),
|
|
(ins LD8lo:$lhs, LD8lo:$rhs),
|
|
"fmuls\t$lhs, $rhs",
|
|
[]>,
|
|
Requires<[SupportsMultiplication]>;
|
|
|
|
def FMULSU : FFMULRdRr<0b11,
|
|
(outs),
|
|
(ins LD8lo:$lhs, LD8lo:$rhs),
|
|
"fmulsu\t$lhs, $rhs",
|
|
[]>,
|
|
Requires<[SupportsMultiplication]>;
|
|
}
|
|
|
|
let Defs = [R15, R14, R13, R12, R11, R10, R9,
|
|
R8, R7, R6, R5, R4, R3, R2, R1, R0] in
|
|
def DESK : FDES<(outs),
|
|
(ins i8imm:$k),
|
|
"des\t$k",
|
|
[]>,
|
|
Requires<[HasDES]>;
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// Logic
|
|
//===----------------------------------------------------------------------===//
|
|
let Constraints = "$src = $rd",
|
|
Defs = [SREG] in
|
|
{
|
|
// Register-Register logic instructions (which have the
|
|
// property of commutativity).
|
|
let isCommutable = 1 in
|
|
{
|
|
def ANDRdRr : FRdRr<0b0010,
|
|
0b00,
|
|
(outs GPR8:$rd),
|
|
(ins GPR8:$src, GPR8:$rr),
|
|
"and\t$rd, $rr",
|
|
[(set i8:$rd, (and i8:$src, i8:$rr)),
|
|
(implicit SREG)]>;
|
|
|
|
// ANDW Rd+1:Rd, Rr+1:Rr
|
|
//
|
|
// Expands to:
|
|
// and Rd, Rr
|
|
// and Rd+1, Rr+1
|
|
def ANDWRdRr : Pseudo<(outs DREGS:$rd),
|
|
(ins DREGS:$src, DREGS:$rr),
|
|
"andw\t$rd, $rr",
|
|
[(set i16:$rd, (and i16:$src, i16:$rr)),
|
|
(implicit SREG)]>;
|
|
|
|
def ORRdRr : FRdRr<0b0010,
|
|
0b10,
|
|
(outs GPR8:$rd),
|
|
(ins GPR8:$src, GPR8:$rr),
|
|
"or\t$rd, $rr",
|
|
[(set i8:$rd, (or i8:$src, i8:$rr)),
|
|
(implicit SREG)]>;
|
|
|
|
// ORW Rd+1:Rd, Rr+1:Rr
|
|
//
|
|
// Expands to:
|
|
// or Rd, Rr
|
|
// or Rd+1, Rr+1
|
|
def ORWRdRr : Pseudo<(outs DREGS:$rd),
|
|
(ins DREGS:$src, DREGS:$rr),
|
|
"orw\t$rd, $rr",
|
|
[(set i16:$rd, (or i16:$src, i16:$rr)),
|
|
(implicit SREG)]>;
|
|
|
|
def EORRdRr : FRdRr<0b0010,
|
|
0b01,
|
|
(outs GPR8:$rd),
|
|
(ins GPR8:$src, GPR8:$rr),
|
|
"eor\t$rd, $rr",
|
|
[(set i8:$rd, (xor i8:$src, i8:$rr)),
|
|
(implicit SREG)]>;
|
|
|
|
// EORW Rd+1:Rd, Rr+1:Rr
|
|
//
|
|
// Expands to:
|
|
// eor Rd, Rr
|
|
// eor Rd+1, Rr+1
|
|
def EORWRdRr : Pseudo<(outs DREGS:$rd),
|
|
(ins DREGS:$src, DREGS:$rr),
|
|
"eorw\t$rd, $rr",
|
|
[(set i16:$rd, (xor i16:$src, i16:$rr)),
|
|
(implicit SREG)]>;
|
|
}
|
|
|
|
def ANDIRdK : FRdK<0b0111,
|
|
(outs LD8:$rd),
|
|
(ins LD8:$src, imm_ldi8:$k),
|
|
"andi\t$rd, $k",
|
|
[(set i8:$rd, (and i8:$src, imm:$k)),
|
|
(implicit SREG)]>;
|
|
|
|
// ANDI Rd+1:Rd, K+1:K
|
|
//
|
|
// Expands to:
|
|
// andi Rd, K
|
|
// andi Rd+1, K+1
|
|
def ANDIWRdK : Pseudo<(outs DLDREGS:$rd),
|
|
(ins DLDREGS:$src, i16imm:$k),
|
|
"andiw\t$rd, $k",
|
|
[(set i16:$rd, (and i16:$src, imm:$k)),
|
|
(implicit SREG)]>;
|
|
|
|
def ORIRdK : FRdK<0b0110,
|
|
(outs LD8:$rd),
|
|
(ins LD8:$src, imm_ldi8:$k),
|
|
"ori\t$rd, $k",
|
|
[(set i8:$rd, (or i8:$src, imm:$k)),
|
|
(implicit SREG)]>;
|
|
|
|
// ORIW Rd+1:Rd, K+1,K
|
|
//
|
|
// Expands to:
|
|
// ori Rd, K
|
|
// ori Rd+1, K+1
|
|
def ORIWRdK : Pseudo<(outs DLDREGS:$rd),
|
|
(ins DLDREGS:$src, i16imm:$rr),
|
|
"oriw\t$rd, $rr",
|
|
[(set i16:$rd, (or i16:$src, imm:$rr)),
|
|
(implicit SREG)]>;
|
|
}
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// One's/Two's Complement
|
|
//===----------------------------------------------------------------------===//
|
|
let Constraints = "$src = $rd",
|
|
Defs = [SREG] in
|
|
{
|
|
def COMRd : FRd<0b1001,
|
|
0b0100000,
|
|
(outs GPR8:$rd),
|
|
(ins GPR8:$src),
|
|
"com\t$rd",
|
|
[(set i8:$rd, (not i8:$src)), (implicit SREG)]>;
|
|
|
|
// COMW Rd+1:Rd
|
|
//
|
|
// Expands to:
|
|
// com Rd
|
|
// com Rd+1
|
|
def COMWRd : Pseudo<(outs DREGS:$rd),
|
|
(ins DREGS:$src),
|
|
"comw\t$rd",
|
|
[(set i16:$rd, (not i16:$src)), (implicit SREG)]>;
|
|
|
|
def NEGRd : FRd<0b1001,
|
|
0b0100001,
|
|
(outs GPR8:$rd),
|
|
(ins GPR8:$src),
|
|
"neg\t$rd",
|
|
[(set i8:$rd, (ineg i8:$src)), (implicit SREG)]>;
|
|
|
|
// NEGW Rd+1:Rd
|
|
//
|
|
// Expands to:
|
|
// neg Rd+1
|
|
// neg Rd
|
|
// sbci Rd+1, 0
|
|
def NEGWRd : Pseudo<(outs DREGS:$rd),
|
|
(ins DREGS:$src),
|
|
"negw\t$rd",
|
|
[(set i16:$rd, (ineg i16:$src)), (implicit SREG)]>;
|
|
}
|
|
|
|
// TST Rd
|
|
// Test for zero of minus.
|
|
// This operation is identical to a `Rd AND Rd`.
|
|
def : InstAlias<"tst\t$rd", (ANDRdRr GPR8:$rd, GPR8:$rd)>;
|
|
|
|
// SBR Rd, K
|
|
//
|
|
// Mnemonic alias to 'ORI Rd, K'. Same bit pattern, same operands,
|
|
// same everything.
|
|
def : InstAlias<"sbr\t$rd, $k",
|
|
(ORIRdK LD8:$rd, imm_ldi8:$k),
|
|
/* Disable display, so we don't override ORI */ 0>;
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// Jump instructions
|
|
//===----------------------------------------------------------------------===//
|
|
let isBarrier = 1,
|
|
isBranch = 1,
|
|
isTerminator = 1 in
|
|
{
|
|
def RJMPk : FBRk<0,
|
|
(outs),
|
|
(ins brtarget_13:$target),
|
|
"rjmp\t$target",
|
|
[(br bb:$target)]>;
|
|
|
|
let isIndirectBranch = 1,
|
|
Uses = [R31R30] in
|
|
def IJMP : F16<0b1001010000001001,
|
|
(outs),
|
|
(ins),
|
|
"ijmp",
|
|
[]>,
|
|
Requires<[HasIJMPCALL]>;
|
|
|
|
let isIndirectBranch = 1,
|
|
Uses = [R31R30] in
|
|
def EIJMP : F16<0b1001010000011001,
|
|
(outs),
|
|
(ins),
|
|
"eijmp",
|
|
[]>,
|
|
Requires<[HasEIJMPCALL]>;
|
|
|
|
def JMPk : F32BRk<0b110,
|
|
(outs),
|
|
(ins call_target:$k),
|
|
"jmp\t$k",
|
|
[]>,
|
|
Requires<[HasJMPCALL]>;
|
|
}
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// Call instructions
|
|
//===----------------------------------------------------------------------===//
|
|
let isCall = 1 in
|
|
{
|
|
// SP is marked as a use to prevent stack-pointer assignments that appear
|
|
// immediately before calls from potentially appearing dead.
|
|
let Uses = [SP] in
|
|
def RCALLk : FBRk<1,
|
|
(outs),
|
|
(ins brtarget_13:$target),
|
|
"rcall\t$target",
|
|
[]>;
|
|
|
|
// SP is marked as a use to prevent stack-pointer assignments that appear
|
|
// immediately before calls from potentially appearing dead.
|
|
let Uses = [SP, R31R30] in
|
|
def ICALL : F16<0b1001010100001001,
|
|
(outs),
|
|
(ins variable_ops),
|
|
"icall",
|
|
[]>,
|
|
Requires<[HasIJMPCALL]>;
|
|
|
|
// SP is marked as a use to prevent stack-pointer assignments that appear
|
|
// immediately before calls from potentially appearing dead.
|
|
let Uses = [SP, R31R30] in
|
|
def EICALL : F16<0b1001010100011001,
|
|
(outs),
|
|
(ins variable_ops),
|
|
"eicall",
|
|
[]>,
|
|
Requires<[HasEIJMPCALL]>;
|
|
|
|
// SP is marked as a use to prevent stack-pointer assignments that appear
|
|
// immediately before calls from potentially appearing dead.
|
|
//
|
|
//:TODO: the imm field can be either 16 or 22 bits in devices with more
|
|
// than 64k of ROM, fix it once we support the largest devices.
|
|
let Uses = [SP] in
|
|
def CALLk : F32BRk<0b111,
|
|
(outs),
|
|
(ins call_target:$k),
|
|
"call\t$k",
|
|
[(AVRcall imm:$k)]>,
|
|
Requires<[HasJMPCALL]>;
|
|
}
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// Return instructions.
|
|
//===----------------------------------------------------------------------===//
|
|
let isTerminator = 1,
|
|
isReturn = 1,
|
|
isBarrier = 1 in
|
|
{
|
|
def RET : F16<0b1001010100001000,
|
|
(outs),
|
|
(ins),
|
|
"ret",
|
|
[(AVRretflag)]>;
|
|
|
|
def RETI : F16<0b1001010100011000,
|
|
(outs),
|
|
(ins),
|
|
"reti",
|
|
[(AVRretiflag)]>;
|
|
}
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// Compare operations.
|
|
//===----------------------------------------------------------------------===//
|
|
let Defs = [SREG] in
|
|
{
|
|
// CPSE Rd, Rr
|
|
// Compare Rd and Rr, skipping the next instruction if they are equal.
|
|
let isBarrier = 1,
|
|
isBranch = 1,
|
|
isTerminator = 1 in
|
|
def CPSE : FRdRr<0b0001,
|
|
0b00,
|
|
(outs),
|
|
(ins GPR8:$rd, GPR8:$rr),
|
|
"cpse\t$rd, $rr",
|
|
[]>;
|
|
|
|
def CPRdRr : FRdRr<0b0001,
|
|
0b01,
|
|
(outs),
|
|
(ins GPR8:$rd, GPR8:$rr),
|
|
"cp\t$rd, $rr",
|
|
[(AVRcmp i8:$rd, i8:$rr), (implicit SREG)]>;
|
|
|
|
// CPW Rd+1:Rd, Rr+1:Rr
|
|
//
|
|
// Expands to:
|
|
// cp Rd, Rr
|
|
// cpc Rd+1, Rr+1
|
|
def CPWRdRr : Pseudo<(outs),
|
|
(ins DREGS:$src, DREGS:$src2),
|
|
"cpw\t$src, $src2",
|
|
[(AVRcmp i16:$src, i16:$src2), (implicit SREG)]>;
|
|
|
|
let Uses = [SREG] in
|
|
def CPCRdRr : FRdRr<0b0000,
|
|
0b01,
|
|
(outs),
|
|
(ins GPR8:$rd, GPR8:$rr),
|
|
"cpc\t$rd, $rr",
|
|
[(AVRcmpc i8:$rd, i8:$rr), (implicit SREG)]>;
|
|
|
|
// CPCW Rd+1:Rd. Rr+1:Rr
|
|
//
|
|
// Expands to:
|
|
// cpc Rd, Rr
|
|
// cpc Rd+1, Rr+1
|
|
let Uses = [SREG] in
|
|
def CPCWRdRr : Pseudo<(outs),
|
|
(ins DREGS:$src, DREGS:$src2),
|
|
"cpcw\t$src, $src2",
|
|
[(AVRcmpc i16:$src, i16:$src2), (implicit SREG)]>;
|
|
|
|
// CPI Rd, K
|
|
// Compares a register with an 8 bit immediate.
|
|
def CPIRdK : FRdK<0b0011,
|
|
(outs),
|
|
(ins LD8:$rd, imm_ldi8:$k),
|
|
"cpi\t$rd, $k",
|
|
[(AVRcmp i8:$rd, imm:$k), (implicit SREG)]>;
|
|
}
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// Register conditional skipping/branching operations.
|
|
//===----------------------------------------------------------------------===//
|
|
let isBranch = 1,
|
|
isTerminator = 1 in
|
|
{
|
|
// Conditional skipping on GPR register bits, and
|
|
// conditional skipping on IO register bits.
|
|
let isBarrier = 1 in
|
|
{
|
|
def SBRCRrB : FRdB<0b10,
|
|
(outs),
|
|
(ins GPR8:$rr, i8imm:$b),
|
|
"sbrc\t$rr, $b",
|
|
[]>;
|
|
|
|
def SBRSRrB : FRdB<0b11,
|
|
(outs),
|
|
(ins GPR8:$rr, i8imm:$b),
|
|
"sbrs\t$rr, $b",
|
|
[]>;
|
|
|
|
def SBICAb : FIOBIT<0b01,
|
|
(outs),
|
|
(ins imm_port5:$a, i8imm:$b),
|
|
"sbic\t$a, $b",
|
|
[]>;
|
|
|
|
def SBISAb : FIOBIT<0b11,
|
|
(outs),
|
|
(ins imm_port5:$a, i8imm:$b),
|
|
"sbis\t$a, $b",
|
|
[]>;
|
|
}
|
|
|
|
// Relative branches on status flag bits.
|
|
let Uses = [SREG] in
|
|
{
|
|
// BRBS s, k
|
|
// Branch if `s` flag in status register is set.
|
|
def BRBSsk : FSK<0,
|
|
(outs),
|
|
(ins i8imm:$s, relbrtarget_7:$k),
|
|
"brbs\t$s, $k",
|
|
[]>;
|
|
|
|
// BRBC s, k
|
|
// Branch if `s` flag in status register is clear.
|
|
def BRBCsk : FSK<1,
|
|
(outs),
|
|
(ins i8imm:$s, relbrtarget_7:$k),
|
|
"brbc\t$s, $k",
|
|
[]>;
|
|
}
|
|
}
|
|
|
|
|
|
// BRCS k
|
|
// Branch if carry flag is set
|
|
def : InstAlias<"brcs\t$k", (BRBSsk 0, relbrtarget_7:$k)>;
|
|
|
|
// BRCC k
|
|
// Branch if carry flag is clear
|
|
def : InstAlias<"brcc\t$k", (BRBCsk 0, relbrtarget_7:$k)>;
|
|
|
|
// BRHS k
|
|
// Branch if half carry flag is set
|
|
def : InstAlias<"brhs\t$k", (BRBSsk 5, relbrtarget_7:$k)>;
|
|
|
|
// BRHC k
|
|
// Branch if half carry flag is clear
|
|
def : InstAlias<"brhc\t$k", (BRBCsk 5, relbrtarget_7:$k)>;
|
|
|
|
// BRTS k
|
|
// Branch if the T flag is set
|
|
def : InstAlias<"brts\t$k", (BRBSsk 6, relbrtarget_7:$k)>;
|
|
|
|
// BRTC k
|
|
// Branch if the T flag is clear
|
|
def : InstAlias<"brtc\t$k", (BRBCsk 6, relbrtarget_7:$k)>;
|
|
|
|
// BRVS k
|
|
// Branch if the overflow flag is set
|
|
def : InstAlias<"brvs\t$k", (BRBSsk 3, relbrtarget_7:$k)>;
|
|
|
|
// BRVC k
|
|
// Branch if the overflow flag is clear
|
|
def : InstAlias<"brvc\t$k", (BRBCsk 3, relbrtarget_7:$k)>;
|
|
|
|
// BRIE k
|
|
// Branch if the global interrupt flag is enabled
|
|
def : InstAlias<"brie\t$k", (BRBSsk 7, relbrtarget_7:$k)>;
|
|
|
|
// BRID k
|
|
// Branch if the global interrupt flag is disabled
|
|
def : InstAlias<"brid\t$k", (BRBCsk 7, relbrtarget_7:$k)>;
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// PC-relative conditional branches
|
|
//===----------------------------------------------------------------------===//
|
|
// Based on status register. We cannot simplify these into instruction aliases
|
|
// because we also need to be able to specify a pattern to match for ISel.
|
|
let isBranch = 1,
|
|
isTerminator = 1,
|
|
Uses = [SREG] in
|
|
{
|
|
def BREQk : FBRsk<0,
|
|
0b001,
|
|
(outs),
|
|
(ins relbrtarget_7:$target),
|
|
"breq\t$target",
|
|
[(AVRbrcond bb:$target, AVR_COND_EQ)]>;
|
|
|
|
def BRNEk : FBRsk<1,
|
|
0b001,
|
|
(outs),
|
|
(ins relbrtarget_7:$target),
|
|
"brne\t$target",
|
|
[(AVRbrcond bb:$target, AVR_COND_NE)]>;
|
|
|
|
|
|
def BRSHk : FBRsk<1,
|
|
0b000,
|
|
(outs),
|
|
(ins relbrtarget_7:$target),
|
|
"brsh\t$target",
|
|
[(AVRbrcond bb:$target, AVR_COND_SH)]>;
|
|
|
|
def BRLOk : FBRsk<0,
|
|
0b000,
|
|
(outs),
|
|
(ins relbrtarget_7:$target),
|
|
"brlo\t$target",
|
|
[(AVRbrcond bb:$target, AVR_COND_LO)]>;
|
|
|
|
def BRMIk : FBRsk<0,
|
|
0b010,
|
|
(outs),
|
|
(ins relbrtarget_7:$target),
|
|
"brmi\t$target",
|
|
[(AVRbrcond bb:$target, AVR_COND_MI)]>;
|
|
|
|
def BRPLk : FBRsk<1,
|
|
0b010,
|
|
(outs),
|
|
(ins relbrtarget_7:$target),
|
|
"brpl\t$target",
|
|
[(AVRbrcond bb:$target, AVR_COND_PL)]>;
|
|
|
|
def BRGEk : FBRsk<1,
|
|
0b100,
|
|
(outs),
|
|
(ins relbrtarget_7:$target),
|
|
"brge\t$target",
|
|
[(AVRbrcond bb:$target, AVR_COND_GE)]>;
|
|
|
|
def BRLTk : FBRsk<0,
|
|
0b100,
|
|
(outs),
|
|
(ins relbrtarget_7:$target),
|
|
"brlt\t$target",
|
|
[(AVRbrcond bb:$target, AVR_COND_LT)]>;
|
|
}
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// Data transfer instructions
|
|
//===----------------------------------------------------------------------===//
|
|
// 8 and 16-bit register move instructions.
|
|
let hasSideEffects = 0 in
|
|
{
|
|
def MOVRdRr : FRdRr<0b0010,
|
|
0b11,
|
|
(outs GPR8:$rd),
|
|
(ins GPR8:$rr),
|
|
"mov\t$rd, $rr",
|
|
[]>;
|
|
|
|
def MOVWRdRr : FMOVWRdRr<(outs DREGS:$dst),
|
|
(ins DREGS:$src),
|
|
"movw\t$dst, $src",
|
|
[]>,
|
|
Requires<[HasMOVW]>;
|
|
}
|
|
|
|
// Load immediate values into registers.
|
|
let isReMaterializable = 1 in
|
|
{
|
|
def LDIRdK : FRdK<0b1110,
|
|
(outs LD8:$rd),
|
|
(ins imm_ldi8:$k),
|
|
"ldi\t$rd, $k",
|
|
[(set i8:$rd, imm:$k)]>;
|
|
|
|
// LDIW Rd+1:Rd, K+1:K
|
|
//
|
|
// Expands to:
|
|
// ldi Rd, K
|
|
// ldi Rd+1, K+1
|
|
def LDIWRdK : Pseudo<(outs DLDREGS:$dst),
|
|
(ins i16imm:$src),
|
|
"ldiw\t$dst, $src",
|
|
[(set i16:$dst, imm:$src)]>;
|
|
}
|
|
|
|
// Load from data space into register.
|
|
let canFoldAsLoad = 1,
|
|
isReMaterializable = 1 in
|
|
{
|
|
def LDSRdK : F32DM<0b0,
|
|
(outs GPR8:$rd),
|
|
(ins imm16:$k),
|
|
"lds\t$rd, $k",
|
|
[(set i8:$rd, (load imm:$k))]>,
|
|
Requires<[HasSRAM]>;
|
|
|
|
// LDSW Rd+1:Rd, K+1:K
|
|
//
|
|
// Expands to:
|
|
// lds Rd, (K+1:K)
|
|
// lds Rd+1 (K+1:K) + 1
|
|
def LDSWRdK : Pseudo<(outs DREGS:$dst),
|
|
(ins i16imm:$src),
|
|
"ldsw\t$dst, $src",
|
|
[(set i16:$dst, (load imm:$src))]>,
|
|
Requires<[HasSRAM]>;
|
|
}
|
|
|
|
// Indirect loads.
|
|
let canFoldAsLoad = 1,
|
|
isReMaterializable = 1 in
|
|
{
|
|
def LDRdPtr : FSTLD<0,
|
|
0b00,
|
|
(outs GPR8:$reg),
|
|
(ins LDSTPtrReg:$ptrreg),
|
|
"ld\t$reg, $ptrreg",
|
|
[(set GPR8:$reg, (load i16:$ptrreg))]>,
|
|
Requires<[HasSRAM]>;
|
|
|
|
// LDW Rd+1:Rd, P
|
|
//
|
|
// Expands to:
|
|
// ld Rd, P
|
|
// ldd Rd+1, P+1
|
|
let Constraints = "@earlyclobber $reg" in
|
|
def LDWRdPtr : Pseudo<(outs DREGS:$reg),
|
|
(ins PTRDISPREGS:$ptrreg),
|
|
"ldw\t$reg, $ptrreg",
|
|
[(set i16:$reg, (load i16:$ptrreg))]>,
|
|
Requires<[HasSRAM]>;
|
|
}
|
|
|
|
// Indirect loads (with postincrement or predecrement).
|
|
let mayLoad = 1,
|
|
hasSideEffects = 0,
|
|
Constraints = "$ptrreg = $base_wb,@earlyclobber $reg" in
|
|
{
|
|
def LDRdPtrPi : FSTLD<0,
|
|
0b01,
|
|
(outs GPR8:$reg, PTRREGS:$base_wb),
|
|
(ins LDSTPtrReg:$ptrreg),
|
|
"ld\t$reg, $ptrreg+",
|
|
[]>,
|
|
Requires<[HasSRAM]>;
|
|
|
|
// LDW Rd+1:Rd, P+
|
|
// Expands to:
|
|
// ld Rd, P+
|
|
// ld Rd+1, P+
|
|
def LDWRdPtrPi : Pseudo<(outs DREGS:$reg, PTRREGS:$base_wb),
|
|
(ins PTRREGS:$ptrreg),
|
|
"ldw\t$reg, $ptrreg+",
|
|
[]>,
|
|
Requires<[HasSRAM]>;
|
|
|
|
def LDRdPtrPd : FSTLD<0,
|
|
0b10,
|
|
(outs GPR8:$reg, PTRREGS:$base_wb),
|
|
(ins LDSTPtrReg:$ptrreg),
|
|
"ld\t$reg, -$ptrreg",
|
|
[]>,
|
|
Requires<[HasSRAM]>;
|
|
|
|
// LDW Rd+1:Rd, -P
|
|
//
|
|
// Expands to:
|
|
// ld Rd+1, -P
|
|
// ld Rd, -P
|
|
def LDWRdPtrPd : Pseudo<(outs DREGS:$reg, PTRREGS:$base_wb),
|
|
(ins PTRREGS:$ptrreg),
|
|
"ldw\t$reg, -$ptrreg",
|
|
[]>,
|
|
Requires<[HasSRAM]>;
|
|
}
|
|
|
|
// Load indirect with displacement operations.
|
|
let canFoldAsLoad = 1,
|
|
isReMaterializable = 1 in
|
|
{
|
|
let Constraints = "@earlyclobber $reg" in
|
|
def LDDRdPtrQ : FSTDLDD<0,
|
|
(outs GPR8:$reg),
|
|
(ins memri:$memri),
|
|
"ldd\t$reg, $memri",
|
|
[(set i8:$reg, (load addr:$memri))]>,
|
|
Requires<[HasSRAM]>;
|
|
|
|
// LDDW Rd+1:Rd, P+q
|
|
//
|
|
// Expands to:
|
|
// ldd Rd, P+q
|
|
// ldd Rd+1, P+q+1
|
|
let Constraints = "@earlyclobber $dst" in
|
|
def LDDWRdPtrQ : Pseudo<(outs DREGS_WITHOUT_YZ_WORKAROUND:$dst),
|
|
(ins memri:$memri),
|
|
"lddw\t$dst, $memri",
|
|
[(set i16:$dst, (load addr:$memri))]>,
|
|
Requires<[HasSRAM]>;
|
|
|
|
// An identical pseudo instruction to LDDWRdPtrQ, expect restricted to the Y
|
|
// register and without the @earlyclobber flag.
|
|
//
|
|
// Used to work around a bug caused by the register allocator not
|
|
// being able to handle the expansion of a COPY into an machine instruction
|
|
// that has an earlyclobber flag. This is because the register allocator will
|
|
// try expand a copy from a register slot into an earlyclobber instruction.
|
|
// Instructions that are earlyclobber need to be in a dedicated earlyclobber slot.
|
|
//
|
|
// This pseudo instruction can be used pre-AVR pseudo expansion in order to
|
|
// get a frame index load without directly using earlyclobber instructions.
|
|
//
|
|
// The pseudo expansion pass trivially expands this into LDDWRdPtrQ.
|
|
//
|
|
// This instruction may be removed once PR13375 is fixed.
|
|
let mayLoad = 1,
|
|
hasSideEffects = 0 in
|
|
def LDDWRdYQ : Pseudo<(outs DREGS:$dst),
|
|
(ins memri:$memri),
|
|
"lddw\t$dst, $memri",
|
|
[]>,
|
|
Requires<[HasSRAM]>;
|
|
}
|
|
|
|
class AtomicLoad<PatFrag Op, RegisterClass DRC,
|
|
RegisterClass PTRRC> :
|
|
Pseudo<(outs DRC:$rd), (ins PTRRC:$rr), "atomic_op",
|
|
[(set DRC:$rd, (Op i16:$rr))]>;
|
|
|
|
class AtomicStore<PatFrag Op, RegisterClass DRC,
|
|
RegisterClass PTRRC> :
|
|
Pseudo<(outs), (ins PTRRC:$rd, DRC:$rr), "atomic_op",
|
|
[(Op i16:$rd, DRC:$rr)]>;
|
|
|
|
class AtomicLoadOp<PatFrag Op, RegisterClass DRC,
|
|
RegisterClass PTRRC> :
|
|
Pseudo<(outs DRC:$rd), (ins PTRRC:$rr, DRC:$operand),
|
|
"atomic_op",
|
|
[(set DRC:$rd, (Op i16:$rr, DRC:$operand))]>;
|
|
|
|
// FIXME: I think 16-bit atomic binary ops need to mark
|
|
// r0 as clobbered.
|
|
|
|
// Atomic instructions
|
|
// ===================
|
|
//
|
|
// These are all expanded by AVRExpandPseudoInsts
|
|
//
|
|
// 8-bit operations can use any pointer register because
|
|
// they are expanded directly into an LD/ST instruction.
|
|
//
|
|
// 16-bit operations use 16-bit load/store postincrement instructions,
|
|
// which require PTRDISPREGS.
|
|
|
|
def AtomicLoad8 : AtomicLoad<atomic_load_8, GPR8, PTRREGS>;
|
|
def AtomicLoad16 : AtomicLoad<atomic_load_16, DREGS, PTRDISPREGS>;
|
|
|
|
def AtomicStore8 : AtomicStore<atomic_store_8, GPR8, PTRREGS>;
|
|
def AtomicStore16 : AtomicStore<atomic_store_16, DREGS, PTRDISPREGS>;
|
|
|
|
class AtomicLoadOp8<PatFrag Op> : AtomicLoadOp<Op, GPR8, PTRREGS>;
|
|
class AtomicLoadOp16<PatFrag Op> : AtomicLoadOp<Op, DREGS, PTRDISPREGS>;
|
|
|
|
def AtomicLoadAdd8 : AtomicLoadOp8<atomic_load_add_8>;
|
|
def AtomicLoadAdd16 : AtomicLoadOp16<atomic_load_add_16>;
|
|
def AtomicLoadSub8 : AtomicLoadOp8<atomic_load_sub_8>;
|
|
def AtomicLoadSub16 : AtomicLoadOp16<atomic_load_sub_16>;
|
|
def AtomicLoadAnd8 : AtomicLoadOp8<atomic_load_and_8>;
|
|
def AtomicLoadAnd16 : AtomicLoadOp16<atomic_load_and_16>;
|
|
def AtomicLoadOr8 : AtomicLoadOp8<atomic_load_or_8>;
|
|
def AtomicLoadOr16 : AtomicLoadOp16<atomic_load_or_16>;
|
|
def AtomicLoadXor8 : AtomicLoadOp8<atomic_load_xor_8>;
|
|
def AtomicLoadXor16 : AtomicLoadOp16<atomic_load_xor_16>;
|
|
def AtomicFence : Pseudo<(outs), (ins), "atomic_fence",
|
|
[(atomic_fence timm, timm)]>;
|
|
|
|
// Indirect store from register to data space.
|
|
def STSKRr : F32DM<0b1,
|
|
(outs),
|
|
(ins imm16:$k, GPR8:$rd),
|
|
"sts\t$k, $rd",
|
|
[(store i8:$rd, imm:$k)]>,
|
|
Requires<[HasSRAM]>;
|
|
|
|
// STSW K+1:K, Rr+1:Rr
|
|
//
|
|
// Expands to:
|
|
// sts Rr+1, (K+1:K) + 1
|
|
// sts Rr, (K+1:K)
|
|
def STSWKRr : Pseudo<(outs),
|
|
(ins i16imm:$dst, DREGS:$src),
|
|
"stsw\t$dst, $src",
|
|
[(store i16:$src, imm:$dst)]>,
|
|
Requires<[HasSRAM]>;
|
|
|
|
// Indirect stores.
|
|
// ST P, Rr
|
|
// Stores the value of Rr into the location addressed by pointer P.
|
|
def STPtrRr : FSTLD<1,
|
|
0b00,
|
|
(outs),
|
|
(ins LDSTPtrReg:$ptrreg, GPR8:$reg),
|
|
"st\t$ptrreg, $reg",
|
|
[(store GPR8:$reg, i16:$ptrreg)]>,
|
|
Requires<[HasSRAM]>;
|
|
|
|
// STW P, Rr+1:Rr
|
|
// Stores the value of Rr into the location addressed by pointer P.
|
|
//
|
|
// Expands to:
|
|
// st P, Rr
|
|
// std P+1, Rr+1
|
|
def STWPtrRr : Pseudo<(outs),
|
|
(ins PTRDISPREGS:$ptrreg, DREGS:$reg),
|
|
"stw\t$ptrreg, $reg",
|
|
[(store i16:$reg, i16:$ptrreg)]>,
|
|
Requires<[HasSRAM]>;
|
|
|
|
// Indirect stores (with postincrement or predecrement).
|
|
let Constraints = "$ptrreg = $base_wb,@earlyclobber $base_wb" in
|
|
{
|
|
|
|
// ST P+, Rr
|
|
// Stores the value of Rr into the location addressed by pointer P.
|
|
// Post increments P.
|
|
def STPtrPiRr : FSTLD<1,
|
|
0b01,
|
|
(outs LDSTPtrReg:$base_wb),
|
|
(ins LDSTPtrReg:$ptrreg, GPR8:$reg, i8imm:$offs),
|
|
"st\t$ptrreg+, $reg",
|
|
[(set i16:$base_wb,
|
|
(post_store GPR8:$reg, i16:$ptrreg, imm:$offs))]>,
|
|
Requires<[HasSRAM]>;
|
|
|
|
// STW P+, Rr+1:Rr
|
|
// Stores the value of Rr into the location addressed by pointer P.
|
|
// Post increments P.
|
|
//
|
|
// Expands to:
|
|
// st P+, Rr
|
|
// st P+, Rr+1
|
|
def STWPtrPiRr : Pseudo<(outs PTRREGS:$base_wb),
|
|
(ins PTRREGS:$ptrreg, DREGS:$trh, i8imm:$offs),
|
|
"stw\t$ptrreg+, $trh",
|
|
[(set PTRREGS:$base_wb,
|
|
(post_store DREGS:$trh, PTRREGS:$ptrreg, imm:$offs))]>,
|
|
Requires<[HasSRAM]>;
|
|
|
|
// ST -P, Rr
|
|
// Stores the value of Rr into the location addressed by pointer P.
|
|
// Pre decrements P.
|
|
def STPtrPdRr : FSTLD<1,
|
|
0b10,
|
|
(outs LDSTPtrReg:$base_wb),
|
|
(ins LDSTPtrReg:$ptrreg, GPR8:$reg, i8imm:$offs),
|
|
"st\t-$ptrreg, $reg",
|
|
[(set i16:$base_wb,
|
|
(pre_store GPR8:$reg, i16:$ptrreg, imm:$offs))]>,
|
|
Requires<[HasSRAM]>;
|
|
|
|
// STW -P, Rr+1:Rr
|
|
// Stores the value of Rr into the location addressed by pointer P.
|
|
// Pre decrements P.
|
|
//
|
|
// Expands to:
|
|
// st -P, Rr+1
|
|
// st -P, Rr
|
|
def STWPtrPdRr : Pseudo<(outs PTRREGS:$base_wb),
|
|
(ins PTRREGS:$ptrreg, DREGS:$reg, i8imm:$offs),
|
|
"stw\t-$ptrreg, $reg",
|
|
[(set PTRREGS:$base_wb,
|
|
(pre_store i16:$reg, i16:$ptrreg, imm:$offs))]>,
|
|
Requires<[HasSRAM]>;
|
|
}
|
|
|
|
// Store indirect with displacement operations.
|
|
// STD P+q, Rr
|
|
// Stores the value of Rr into the location addressed by pointer P with a
|
|
// displacement of q. Does not modify P.
|
|
def STDPtrQRr : FSTDLDD<1,
|
|
(outs),
|
|
(ins memri:$memri, GPR8:$reg),
|
|
"std\t$memri, $reg",
|
|
[(store i8:$reg, addr:$memri)]>,
|
|
Requires<[HasSRAM]>;
|
|
|
|
// STDW P+q, Rr+1:Rr
|
|
// Stores the value of Rr into the location addressed by pointer P with a
|
|
// displacement of q. Does not modify P.
|
|
//
|
|
// Expands to:
|
|
// std P+q, Rr
|
|
// std P+q+1, Rr+1
|
|
def STDWPtrQRr : Pseudo<(outs),
|
|
(ins memri:$memri, DREGS:$src),
|
|
"stdw\t$memri, $src",
|
|
[(store i16:$src, addr:$memri)]>,
|
|
Requires<[HasSRAM]>;
|
|
|
|
|
|
// Load program memory operations.
|
|
let canFoldAsLoad = 1,
|
|
isReMaterializable = 1,
|
|
mayLoad = 1,
|
|
hasSideEffects = 0 in
|
|
{
|
|
let Defs = [R0],
|
|
Uses = [R31R30] in
|
|
def LPM : F16<0b1001010111001000,
|
|
(outs),
|
|
(ins),
|
|
"lpm",
|
|
[]>,
|
|
Requires<[HasLPM]>;
|
|
|
|
def LPMRdZ : FLPMX<0,
|
|
0,
|
|
(outs GPR8:$dst),
|
|
(ins ZREG:$z),
|
|
"lpm\t$dst, $z",
|
|
[]>,
|
|
Requires<[HasLPMX]>;
|
|
|
|
// Load program memory, while postincrementing the Z register.
|
|
let Defs = [R31R30] in
|
|
{
|
|
def LPMRdZPi : FLPMX<0,
|
|
1,
|
|
(outs GPR8:$dst),
|
|
(ins ZREG:$z),
|
|
"lpm\t$dst, $z+",
|
|
[]>,
|
|
Requires<[HasLPMX]>;
|
|
|
|
def LPMWRdZ : Pseudo<(outs DREGS:$dst),
|
|
(ins ZREG:$z),
|
|
"lpmw\t$dst, $z",
|
|
[]>,
|
|
Requires<[HasLPMX]>;
|
|
|
|
def LPMWRdZPi : Pseudo<(outs DREGS:$dst),
|
|
(ins ZREG:$z),
|
|
"lpmw\t$dst, $z+",
|
|
[]>,
|
|
Requires<[HasLPMX]>;
|
|
}
|
|
}
|
|
|
|
// Extended load program memory operations.
|
|
let mayLoad = 1,
|
|
hasSideEffects = 0 in
|
|
{
|
|
let Defs = [R0],
|
|
Uses = [R31R30] in
|
|
def ELPM : F16<0b1001010111011000,
|
|
(outs),
|
|
(ins),
|
|
"elpm",
|
|
[]>,
|
|
Requires<[HasELPM]>;
|
|
|
|
def ELPMRdZ : FLPMX<1,
|
|
0,
|
|
(outs GPR8:$dst),
|
|
(ins ZREG:$z),
|
|
"elpm\t$dst, $z",
|
|
[]>,
|
|
Requires<[HasELPMX]>;
|
|
|
|
let Defs = [R31R30] in
|
|
def ELPMRdZPi : FLPMX<1,
|
|
1,
|
|
(outs GPR8:$dst),
|
|
(ins ZREG: $z),
|
|
"elpm\t$dst, $z+",
|
|
[]>,
|
|
Requires<[HasELPMX]>;
|
|
}
|
|
|
|
// Store program memory operations.
|
|
let Uses = [R1, R0] in
|
|
{
|
|
let Uses = [R31R30, R1, R0] in
|
|
def SPM : F16<0b1001010111101000,
|
|
(outs),
|
|
(ins),
|
|
"spm",
|
|
[]>,
|
|
Requires<[HasSPM]>;
|
|
|
|
let Defs = [R31R30] in
|
|
def SPMZPi : F16<0b1001010111111000,
|
|
(outs),
|
|
(ins ZREG:$z),
|
|
"spm $z+",
|
|
[]>,
|
|
Requires<[HasSPMX]>;
|
|
}
|
|
|
|
// Read data from IO location operations.
|
|
let canFoldAsLoad = 1,
|
|
isReMaterializable = 1 in
|
|
{
|
|
def INRdA : FIORdA<(outs GPR8:$dst),
|
|
(ins imm_port6:$src),
|
|
"in\t$dst, $src",
|
|
[(set i8:$dst, (load ioaddr8:$src))]>;
|
|
|
|
def INWRdA : Pseudo<(outs DREGS:$dst),
|
|
(ins imm_port6:$src),
|
|
"inw\t$dst, $src",
|
|
[(set i16:$dst, (load ioaddr16:$src))]>;
|
|
}
|
|
|
|
// Write data to IO location operations.
|
|
def OUTARr : FIOARr<(outs),
|
|
(ins imm_port6:$dst, GPR8:$src),
|
|
"out\t$dst, $src",
|
|
[(store i8:$src, ioaddr8:$dst)]>;
|
|
|
|
def OUTWARr : Pseudo<(outs),
|
|
(ins imm_port6:$dst, DREGS:$src),
|
|
"outw\t$dst, $src",
|
|
[(store i16:$src, ioaddr16:$dst)]>;
|
|
|
|
// Stack push/pop operations.
|
|
let Defs = [SP],
|
|
Uses = [SP],
|
|
hasSideEffects = 0 in
|
|
{
|
|
// Stack push operations.
|
|
let mayStore = 1 in
|
|
{
|
|
def PUSHRr : FRd<0b1001,
|
|
0b0011111,
|
|
(outs),
|
|
(ins GPR8:$reg),
|
|
"push\t$reg",
|
|
[]>,
|
|
Requires<[HasSRAM]>;
|
|
|
|
def PUSHWRr : Pseudo<(outs),
|
|
(ins DREGS:$reg),
|
|
"pushw\t$reg",
|
|
[]>,
|
|
Requires<[HasSRAM]>;
|
|
}
|
|
|
|
// Stack pop operations.
|
|
let mayLoad = 1 in
|
|
{
|
|
def POPRd : FRd<0b1001,
|
|
0b0001111,
|
|
(outs GPR8:$reg),
|
|
(ins),
|
|
"pop\t$reg",
|
|
[]>,
|
|
Requires<[HasSRAM]>;
|
|
|
|
def POPWRd : Pseudo<(outs DREGS:$reg),
|
|
(ins),
|
|
"popw\t$reg",
|
|
[]>,
|
|
Requires<[HasSRAM]>;
|
|
}
|
|
}
|
|
|
|
// Read-Write-Modify (RMW) instructions.
|
|
def XCHZRd : FZRd<0b100,
|
|
(outs GPR8:$rd),
|
|
(ins ZREG:$z),
|
|
"xch\t$z, $rd",
|
|
[]>,
|
|
Requires<[SupportsRMW]>;
|
|
|
|
def LASZRd : FZRd<0b101,
|
|
(outs GPR8:$rd),
|
|
(ins ZREG:$z),
|
|
"las\t$z, $rd",
|
|
[]>,
|
|
Requires<[SupportsRMW]>;
|
|
|
|
def LACZRd : FZRd<0b110,
|
|
(outs GPR8:$rd),
|
|
(ins ZREG:$z),
|
|
"lac\t$z, $rd",
|
|
[]>,
|
|
Requires<[SupportsRMW]>;
|
|
|
|
def LATZRd : FZRd<0b111,
|
|
(outs GPR8:$rd),
|
|
(ins ZREG:$z),
|
|
"lat\t$z, $rd",
|
|
[]>,
|
|
Requires<[SupportsRMW]>;
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// Bit and bit-test instructions
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
// Bit shift/rotate operations.
|
|
let Constraints = "$src = $rd",
|
|
Defs = [SREG] in
|
|
{
|
|
// 8-bit LSL is an alias of ADD Rd, Rd
|
|
|
|
def LSLWRd : Pseudo<(outs DREGS:$rd),
|
|
(ins DREGS:$src),
|
|
"lslw\t$rd",
|
|
[(set i16:$rd, (AVRlsl i16:$src)), (implicit SREG)]>;
|
|
|
|
def LSLB7Rd : Pseudo<(outs GPR8:$rd),
|
|
(ins GPR8:$src),
|
|
"lslb7\t$rd",
|
|
[(set i8:$rd, (AVRlsl7 i8:$src)), (implicit SREG)]>;
|
|
|
|
def LSRRd : FRd<0b1001,
|
|
0b0100110,
|
|
(outs GPR8:$rd),
|
|
(ins GPR8:$src),
|
|
"lsr\t$rd",
|
|
[(set i8:$rd, (AVRlsr i8:$src)), (implicit SREG)]>;
|
|
|
|
def LSRB7Rd : Pseudo<(outs GPR8:$rd),
|
|
(ins GPR8:$src),
|
|
"lsrb7\t$rd",
|
|
[(set i8:$rd, (AVRlsr7 i8:$src)), (implicit SREG)]>;
|
|
|
|
def LSRWRd : Pseudo<(outs DREGS:$rd),
|
|
(ins DREGS:$src),
|
|
"lsrw\t$rd",
|
|
[(set i16:$rd, (AVRlsr i16:$src)), (implicit SREG)]>;
|
|
|
|
def ASRRd : FRd<0b1001,
|
|
0b0100101,
|
|
(outs GPR8:$rd),
|
|
(ins GPR8:$src),
|
|
"asr\t$rd",
|
|
[(set i8:$rd, (AVRasr i8:$src)), (implicit SREG)]>;
|
|
|
|
def ASRB7Rd : Pseudo<(outs GPR8:$rd),
|
|
(ins GPR8:$src),
|
|
"asrb7\t$rd",
|
|
[(set i8:$rd, (AVRasr7 i8:$src)), (implicit SREG)]>;
|
|
|
|
def ASRWRd : Pseudo<(outs DREGS:$rd),
|
|
(ins DREGS:$src),
|
|
"asrw\t$rd",
|
|
[(set i16:$rd, (AVRasr i16:$src)), (implicit SREG)]>;
|
|
|
|
// Bit rotate operations.
|
|
let Uses = [SREG] in
|
|
{
|
|
// 8-bit ROL is an alias of ADC Rd, Rd
|
|
|
|
def ROLBRd : Pseudo<(outs GPR8:$rd),
|
|
(ins GPR8:$src),
|
|
"rolb\t$rd",
|
|
[(set i8:$rd, (AVRrol i8:$src)), (implicit SREG)]>;
|
|
|
|
def RORBRd : Pseudo<(outs GPR8:$rd),
|
|
(ins GPR8:$src),
|
|
"rorb\t$rd",
|
|
[(set i8:$rd, (AVRror i8:$src)), (implicit SREG)]>;
|
|
|
|
def ROLWRd : Pseudo<(outs DREGS:$rd),
|
|
(ins DREGS:$src),
|
|
"rolw\t$rd",
|
|
[(set i16:$rd, (AVRrol i16:$src)), (implicit SREG)]>;
|
|
|
|
def RORRd : FRd<0b1001,
|
|
0b0100111,
|
|
(outs GPR8:$rd),
|
|
(ins GPR8:$src),
|
|
"ror\t$rd",
|
|
[]>;
|
|
|
|
def RORWRd : Pseudo<(outs DREGS:$rd),
|
|
(ins DREGS:$src),
|
|
"rorw\t$rd",
|
|
[(set i16:$rd, (AVRror i16:$src)), (implicit SREG)]>;
|
|
}
|
|
}
|
|
|
|
// SWAP Rd
|
|
// Swaps the high and low nibbles in a register.
|
|
let Constraints = "$src = $rd" in
|
|
def SWAPRd : FRd<0b1001,
|
|
0b0100010,
|
|
(outs GPR8:$rd),
|
|
(ins GPR8:$src),
|
|
"swap\t$rd",
|
|
[(set i8:$rd, (AVRSwap i8:$src))]>;
|
|
|
|
// IO register bit set/clear operations.
|
|
//:TODO: add patterns when popcount(imm)==2 to be expanded with 2 sbi/cbi
|
|
// instead of in+ori+out which requires one more instr.
|
|
def SBIAb : FIOBIT<0b10,
|
|
(outs),
|
|
(ins imm_port5:$addr, i8imm:$bit),
|
|
"sbi\t$addr, $bit",
|
|
[(store (or (i8 (load lowioaddr8:$addr)), iobitpos8:$bit),
|
|
lowioaddr8:$addr)]>;
|
|
|
|
def CBIAb : FIOBIT<0b00,
|
|
(outs),
|
|
(ins imm_port5:$addr, i8imm:$bit),
|
|
"cbi\t$addr, $bit",
|
|
[(store (and (i8 (load lowioaddr8:$addr)), iobitposn8:$bit),
|
|
lowioaddr8:$addr)]>;
|
|
|
|
// Status register bit load/store operations.
|
|
let Defs = [SREG] in
|
|
def BST : FRdB<0b01,
|
|
(outs),
|
|
(ins GPR8:$rd, i8imm:$b),
|
|
"bst\t$rd, $b",
|
|
[]>;
|
|
|
|
let Uses = [SREG] in
|
|
def BLD : FRdB<0b00,
|
|
(outs),
|
|
(ins GPR8:$rd, i8imm:$b),
|
|
"bld\t$rd, $b",
|
|
[]>;
|
|
|
|
def CBR : InstAlias<"cbr\t$rd, $k", (ANDIRdK LD8:$rd, imm_com8:$k), 0>;
|
|
|
|
// CLR Rd
|
|
// Alias for EOR Rd, Rd
|
|
// -------------
|
|
// Clears all bits in a register.
|
|
def CLR : InstAlias<"clr\t$rd", (EORRdRr GPR8:$rd, GPR8:$rd)>;
|
|
|
|
// LSL Rd
|
|
// Alias for ADD Rd, Rd
|
|
// --------------
|
|
// Logical shift left one bit.
|
|
def LSL : InstAlias<"lsl\t$rd", (ADDRdRr GPR8:$rd, GPR8:$rd)>;
|
|
|
|
def ROL : InstAlias<"rol\t$rd", (ADCRdRr GPR8:$rd, GPR8:$rd)>;
|
|
|
|
// SER Rd
|
|
// Alias for LDI Rd, 0xff
|
|
// ---------
|
|
// Sets all bits in a register.
|
|
def : InstAlias<"ser\t$rd", (LDIRdK LD8:$rd, 0xff), 0>;
|
|
|
|
let Defs = [SREG] in
|
|
def BSETs : FS<0,
|
|
(outs),
|
|
(ins i8imm:$s),
|
|
"bset\t$s",
|
|
[]>;
|
|
|
|
let Defs = [SREG] in
|
|
def BCLRs : FS<1,
|
|
(outs),
|
|
(ins i8imm:$s),
|
|
"bclr\t$s",
|
|
[]>;
|
|
|
|
// Set/clear aliases for the carry (C) status flag (bit 0).
|
|
def : InstAlias<"sec", (BSETs 0)>;
|
|
def : InstAlias<"clc", (BCLRs 0)>;
|
|
|
|
// Set/clear aliases for the zero (Z) status flag (bit 1).
|
|
def : InstAlias<"sez", (BSETs 1)>;
|
|
def : InstAlias<"clz", (BCLRs 1)>;
|
|
|
|
// Set/clear aliases for the negative (N) status flag (bit 2).
|
|
def : InstAlias<"sen", (BSETs 2)>;
|
|
def : InstAlias<"cln", (BCLRs 2)>;
|
|
|
|
// Set/clear aliases for the overflow (V) status flag (bit 3).
|
|
def : InstAlias<"sev", (BSETs 3)>;
|
|
def : InstAlias<"clv", (BCLRs 3)>;
|
|
|
|
// Set/clear aliases for the signed (S) status flag (bit 4).
|
|
def : InstAlias<"ses", (BSETs 4)>;
|
|
def : InstAlias<"cls", (BCLRs 4)>;
|
|
|
|
// Set/clear aliases for the half-carry (H) status flag (bit 5).
|
|
def : InstAlias<"seh", (BSETs 5)>;
|
|
def : InstAlias<"clh", (BCLRs 5)>;
|
|
|
|
// Set/clear aliases for the T status flag (bit 6).
|
|
def : InstAlias<"set", (BSETs 6)>;
|
|
def : InstAlias<"clt", (BCLRs 6)>;
|
|
|
|
// Set/clear aliases for the interrupt (I) status flag (bit 7).
|
|
def : InstAlias<"sei", (BSETs 7)>;
|
|
def : InstAlias<"cli", (BCLRs 7)>;
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// Special/Control instructions
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
// BREAK
|
|
// Breakpoint instruction
|
|
// ---------
|
|
// <|1001|0101|1001|1000>
|
|
def BREAK : F16<0b1001010110011000,
|
|
(outs),
|
|
(ins),
|
|
"break",
|
|
[]>,
|
|
Requires<[HasBREAK]>;
|
|
|
|
// NOP
|
|
// No-operation instruction
|
|
// ---------
|
|
// <|0000|0000|0000|0000>
|
|
def NOP : F16<0b0000000000000000,
|
|
(outs),
|
|
(ins),
|
|
"nop",
|
|
[]>;
|
|
|
|
// SLEEP
|
|
// Sleep instruction
|
|
// ---------
|
|
// <|1001|0101|1000|1000>
|
|
def SLEEP : F16<0b1001010110001000,
|
|
(outs),
|
|
(ins),
|
|
"sleep",
|
|
[]>;
|
|
|
|
// WDR
|
|
// Watchdog reset
|
|
// ---------
|
|
// <|1001|0101|1010|1000>
|
|
def WDR : F16<0b1001010110101000,
|
|
(outs),
|
|
(ins),
|
|
"wdr",
|
|
[]>;
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// Pseudo instructions for later expansion
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
//:TODO: Optimize this for wider types AND optimize the following code
|
|
// compile int foo(char a, char b, char c, char d) {return d+b;}
|
|
// looks like a missed sext_inreg opportunity.
|
|
def SEXT : ExtensionPseudo<
|
|
(outs DREGS:$dst),
|
|
(ins GPR8:$src),
|
|
"sext\t$dst, $src",
|
|
[(set i16:$dst, (sext i8:$src)), (implicit SREG)]
|
|
>;
|
|
|
|
def ZEXT : ExtensionPseudo<
|
|
(outs DREGS:$dst),
|
|
(ins GPR8:$src),
|
|
"zext\t$dst, $src",
|
|
[(set i16:$dst, (zext i8:$src)), (implicit SREG)]
|
|
>;
|
|
|
|
// This pseudo gets expanded into a movw+adiw thus it clobbers SREG.
|
|
let Defs = [SREG],
|
|
hasSideEffects = 0 in
|
|
def FRMIDX : Pseudo<(outs DLDREGS:$dst),
|
|
(ins DLDREGS:$src, i16imm:$src2),
|
|
"frmidx\t$dst, $src, $src2",
|
|
[]>;
|
|
|
|
// This pseudo is either converted to a regular store or a push which clobbers
|
|
// SP.
|
|
def STDSPQRr : StorePseudo<
|
|
(outs),
|
|
(ins memspi:$dst, GPR8:$src),
|
|
"stdstk\t$dst, $src",
|
|
[(store i8:$src, addr:$dst)]
|
|
>;
|
|
|
|
// This pseudo is either converted to a regular store or a push which clobbers
|
|
// SP.
|
|
def STDWSPQRr : StorePseudo<
|
|
(outs),
|
|
(ins memspi:$dst, DREGS:$src),
|
|
"stdwstk\t$dst, $src",
|
|
[(store i16:$src, addr:$dst)]
|
|
>;
|
|
|
|
// SP read/write pseudos.
|
|
let hasSideEffects = 0 in
|
|
{
|
|
let Uses = [SP] in
|
|
def SPREAD : Pseudo<
|
|
(outs DREGS:$dst),
|
|
(ins GPRSP:$src),
|
|
"spread\t$dst, $src",
|
|
[]
|
|
>;
|
|
|
|
let Defs = [SP] in
|
|
def SPWRITE : Pseudo<
|
|
(outs GPRSP:$dst),
|
|
(ins DREGS:$src),
|
|
"spwrite\t$dst, $src",
|
|
[]>;
|
|
}
|
|
|
|
def Select8 : SelectPseudo<
|
|
(outs GPR8:$dst),
|
|
(ins GPR8:$src, GPR8:$src2, i8imm:$cc),
|
|
"# Select8 PSEUDO",
|
|
[(set i8:$dst, (AVRselectcc i8:$src, i8:$src2, imm:$cc))]
|
|
>;
|
|
|
|
def Select16 : SelectPseudo<
|
|
(outs DREGS:$dst),
|
|
(ins DREGS:$src, DREGS:$src2, i8imm:$cc),
|
|
"# Select16 PSEUDO",
|
|
[(set i16:$dst, (AVRselectcc i16:$src, i16:$src2, imm:$cc))]
|
|
>;
|
|
|
|
def Lsl8 : ShiftPseudo<
|
|
(outs GPR8:$dst),
|
|
(ins GPR8:$src, GPR8:$cnt),
|
|
"# Lsl8 PSEUDO",
|
|
[(set i8:$dst, (AVRlslLoop i8:$src, i8:$cnt))]
|
|
>;
|
|
|
|
def Lsl16 : ShiftPseudo<
|
|
(outs DREGS:$dst),
|
|
(ins DREGS:$src, GPR8:$cnt),
|
|
"# Lsl16 PSEUDO",
|
|
[(set i16:$dst, (AVRlslLoop i16:$src, i8:$cnt))]
|
|
>;
|
|
|
|
def Lsr8 : ShiftPseudo<
|
|
(outs GPR8:$dst),
|
|
(ins GPR8:$src, GPR8:$cnt),
|
|
"# Lsr8 PSEUDO",
|
|
[(set i8:$dst, (AVRlsrLoop i8:$src, i8:$cnt))]
|
|
>;
|
|
|
|
def Lsr16 : ShiftPseudo<
|
|
(outs DREGS:$dst),
|
|
(ins DREGS:$src, GPR8:$cnt),
|
|
"# Lsr16 PSEUDO",
|
|
[(set i16:$dst, (AVRlsrLoop i16:$src, i8:$cnt))]
|
|
>;
|
|
|
|
def Rol8 : ShiftPseudo<
|
|
(outs GPR8:$dst),
|
|
(ins GPR8:$src, GPR8:$cnt),
|
|
"# Rol8 PSEUDO",
|
|
[(set i8:$dst, (AVRrolLoop i8:$src, i8:$cnt))]
|
|
>;
|
|
|
|
def Rol16 : ShiftPseudo<
|
|
(outs DREGS:$dst),
|
|
(ins DREGS:$src, GPR8:$cnt),
|
|
"# Rol16 PSEUDO",
|
|
[(set i16:$dst, (AVRrolLoop i16:$src, i8:$cnt))]
|
|
>;
|
|
|
|
def Ror8 : ShiftPseudo<
|
|
(outs GPR8:$dst),
|
|
(ins GPR8:$src, GPR8:$cnt),
|
|
"# Ror8 PSEUDO",
|
|
[(set i8:$dst, (AVRrorLoop i8:$src, i8:$cnt))]
|
|
>;
|
|
|
|
def Ror16 : ShiftPseudo<
|
|
(outs DREGS:$dst),
|
|
(ins DREGS:$src, GPR8:$cnt),
|
|
"# Ror16 PSEUDO",
|
|
[(set i16:$dst, (AVRrorLoop i16:$src, i8:$cnt))]
|
|
>;
|
|
|
|
def Asr8 : ShiftPseudo<
|
|
(outs GPR8:$dst),
|
|
(ins GPR8:$src, GPR8:$cnt),
|
|
"# Asr8 PSEUDO",
|
|
[(set i8:$dst, (AVRasrLoop i8:$src, i8:$cnt))]
|
|
>;
|
|
|
|
def Asr16 : ShiftPseudo<
|
|
(outs DREGS:$dst),
|
|
(ins DREGS:$src, GPR8:$cnt),
|
|
"# Asr16 PSEUDO",
|
|
[(set i16:$dst, (AVRasrLoop i16:$src, i8:$cnt))]
|
|
>;
|
|
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// Non-Instruction Patterns
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
//:TODO: look in x86InstrCompiler.td for odd encoding trick related to
|
|
// add x, 128 -> sub x, -128. Clang is emitting an eor for this (ldi+eor)
|
|
|
|
// the add instruction always writes the carry flag
|
|
def : Pat<(addc i8:$src, i8:$src2),
|
|
(ADDRdRr i8:$src, i8:$src2)>;
|
|
def : Pat<(addc DREGS:$src, DREGS:$src2),
|
|
(ADDWRdRr DREGS:$src, DREGS:$src2)>;
|
|
|
|
// all sub instruction variants always writes the carry flag
|
|
def : Pat<(subc i8:$src, i8:$src2),
|
|
(SUBRdRr i8:$src, i8:$src2)>;
|
|
def : Pat<(subc i16:$src, i16:$src2),
|
|
(SUBWRdRr i16:$src, i16:$src2)>;
|
|
def : Pat<(subc i8:$src, imm:$src2),
|
|
(SUBIRdK i8:$src, imm:$src2)>;
|
|
def : Pat<(subc i16:$src, imm:$src2),
|
|
(SUBIWRdK i16:$src, imm:$src2)>;
|
|
|
|
// These patterns convert add (x, -imm) to sub (x, imm) since we dont have
|
|
// any add with imm instructions. Also take care of the adiw/sbiw instructions.
|
|
def : Pat<(add i16:$src1, imm0_63_neg:$src2),
|
|
(SBIWRdK i16:$src1, (imm0_63_neg:$src2))>;
|
|
def : Pat<(add i16:$src1, imm:$src2),
|
|
(SUBIWRdK i16:$src1, (imm16_neg_XFORM imm:$src2))>;
|
|
def : Pat<(addc i16:$src1, imm:$src2),
|
|
(SUBIWRdK i16:$src1, (imm16_neg_XFORM imm:$src2))>;
|
|
|
|
def : Pat<(add i8:$src1, imm:$src2),
|
|
(SUBIRdK i8:$src1, (imm8_neg_XFORM imm:$src2))>;
|
|
def : Pat<(addc i8:$src1, imm:$src2),
|
|
(SUBIRdK i8:$src1, (imm8_neg_XFORM imm:$src2))>;
|
|
def : Pat<(adde i8:$src1, imm:$src2),
|
|
(SBCIRdK i8:$src1, (imm8_neg_XFORM imm:$src2))>;
|
|
|
|
// Calls.
|
|
def : Pat<(AVRcall (i16 tglobaladdr:$dst)),
|
|
(CALLk tglobaladdr:$dst)>;
|
|
def : Pat<(AVRcall (i16 texternalsym:$dst)),
|
|
(CALLk texternalsym:$dst)>;
|
|
|
|
// `anyext`
|
|
def : Pat<(i16 (anyext i8:$src)),
|
|
(INSERT_SUBREG (i16 (IMPLICIT_DEF)), i8:$src, sub_lo)>;
|
|
|
|
// `trunc`
|
|
def : Pat<(i8 (trunc i16:$src)),
|
|
(EXTRACT_SUBREG i16:$src, sub_lo)>;
|
|
|
|
// sext_inreg
|
|
def : Pat<(sext_inreg i16:$src, i8),
|
|
(SEXT (i8 (EXTRACT_SUBREG i16:$src, sub_lo)))>;
|
|
|
|
// GlobalAddress
|
|
def : Pat<(i16 (AVRWrapper tglobaladdr:$dst)),
|
|
(LDIWRdK tglobaladdr:$dst)>;
|
|
def : Pat<(add i16:$src, (AVRWrapper tglobaladdr:$src2)),
|
|
(SUBIWRdK i16:$src, tglobaladdr:$src2)>;
|
|
def : Pat<(i8 (load (AVRWrapper tglobaladdr:$dst))),
|
|
(LDSRdK tglobaladdr:$dst)>;
|
|
def : Pat<(i16 (load (AVRWrapper tglobaladdr:$dst))),
|
|
(LDSWRdK tglobaladdr:$dst)>;
|
|
def : Pat<(store i8:$src, (i16 (AVRWrapper tglobaladdr:$dst))),
|
|
(STSKRr tglobaladdr:$dst, i8:$src)>;
|
|
def : Pat<(store i16:$src, (i16 (AVRWrapper tglobaladdr:$dst))),
|
|
(STSWKRr tglobaladdr:$dst, i16:$src)>;
|
|
|
|
// BlockAddress
|
|
def : Pat<(i16 (AVRWrapper tblockaddress:$dst)),
|
|
(LDIWRdK tblockaddress:$dst)>;
|
|
|
|
// hi-reg truncation : trunc(int16 >> 8)
|
|
//:FIXME: i think it's better to emit an extract subreg node in the DAG than
|
|
// all this mess once we get optimal shift code
|
|
// lol... I think so, too. [@agnat]
|
|
def : Pat<(i8 (trunc (AVRlsr (AVRlsr (AVRlsr (AVRlsr (AVRlsr (AVRlsr (AVRlsr
|
|
(AVRlsr DREGS:$src)))))))))),
|
|
(EXTRACT_SUBREG DREGS:$src, sub_hi)>;
|
|
|
|
// :FIXME: DAGCombiner produces an shl node after legalization from these seq:
|
|
// BR_JT -> (mul x, 2) -> (shl x, 1)
|
|
def : Pat<(shl i16:$src1, (i8 1)),
|
|
(LSLWRd i16:$src1)>;
|
|
|
|
// Lowering of 'tst' node to 'TST' instruction.
|
|
// TST is an alias of AND Rd, Rd.
|
|
def : Pat<(AVRtst i8:$rd),
|
|
(ANDRdRr GPR8:$rd, GPR8:$rd)>;
|
|
|
|
// Lowering of 'lsl' node to 'LSL' instruction.
|
|
// LSL is an alias of 'ADD Rd, Rd'
|
|
def : Pat<(AVRlsl i8:$rd),
|
|
(ADDRdRr GPR8:$rd, GPR8:$rd)>;
|
|
|