forked from OSchip/llvm-project
1968 lines
68 KiB
C++
1968 lines
68 KiB
C++
//===-- HexagonAsmParser.cpp - Parse Hexagon asm to MCInst instructions----===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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#define DEBUG_TYPE "mcasmparser"
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#include "Hexagon.h"
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#include "HexagonTargetStreamer.h"
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#include "MCTargetDesc/HexagonMCChecker.h"
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#include "MCTargetDesc/HexagonMCELFStreamer.h"
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#include "MCTargetDesc/HexagonMCExpr.h"
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#include "MCTargetDesc/HexagonMCInstrInfo.h"
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#include "MCTargetDesc/HexagonMCTargetDesc.h"
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#include "MCTargetDesc/HexagonShuffler.h"
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#include "llvm/ADT/STLExtras.h"
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#include "llvm/ADT/SmallVector.h"
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#include "llvm/ADT/StringExtras.h"
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#include "llvm/ADT/StringRef.h"
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#include "llvm/ADT/Twine.h"
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#include "llvm/BinaryFormat/ELF.h"
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#include "llvm/MC/MCAssembler.h"
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#include "llvm/MC/MCContext.h"
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#include "llvm/MC/MCDirectives.h"
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#include "llvm/MC/MCELFStreamer.h"
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#include "llvm/MC/MCExpr.h"
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#include "llvm/MC/MCInst.h"
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#include "llvm/MC/MCParser/MCAsmLexer.h"
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#include "llvm/MC/MCParser/MCAsmParser.h"
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#include "llvm/MC/MCParser/MCAsmParserExtension.h"
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#include "llvm/MC/MCParser/MCParsedAsmOperand.h"
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#include "llvm/MC/MCParser/MCTargetAsmParser.h"
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#include "llvm/MC/MCRegisterInfo.h"
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#include "llvm/MC/MCSectionELF.h"
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#include "llvm/MC/MCStreamer.h"
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#include "llvm/MC/MCSubtargetInfo.h"
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#include "llvm/MC/MCSymbol.h"
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#include "llvm/MC/MCValue.h"
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#include "llvm/Support/Casting.h"
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#include "llvm/Support/CommandLine.h"
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#include "llvm/Support/Debug.h"
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#include "llvm/Support/ErrorHandling.h"
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#include "llvm/Support/Format.h"
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#include "llvm/Support/MathExtras.h"
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#include "llvm/Support/SMLoc.h"
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#include "llvm/Support/TargetRegistry.h"
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#include "llvm/Support/raw_ostream.h"
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#include <algorithm>
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#include <cassert>
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#include <cctype>
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#include <cstddef>
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#include <cstdint>
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#include <memory>
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#include <string>
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#include <utility>
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using namespace llvm;
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static cl::opt<bool> EnableFutureRegs("mfuture-regs",
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cl::desc("Enable future registers"));
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static cl::opt<bool> WarnMissingParenthesis(
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"mwarn-missing-parenthesis",
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cl::desc("Warn for missing parenthesis around predicate registers"),
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cl::init(true));
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static cl::opt<bool> ErrorMissingParenthesis(
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"merror-missing-parenthesis",
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cl::desc("Error for missing parenthesis around predicate registers"),
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cl::init(false));
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static cl::opt<bool> WarnSignedMismatch(
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"mwarn-sign-mismatch",
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cl::desc("Warn for mismatching a signed and unsigned value"),
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cl::init(true));
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static cl::opt<bool> WarnNoncontigiousRegister(
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"mwarn-noncontigious-register",
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cl::desc("Warn for register names that arent contigious"), cl::init(true));
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static cl::opt<bool> ErrorNoncontigiousRegister(
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"merror-noncontigious-register",
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cl::desc("Error for register names that aren't contigious"),
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cl::init(false));
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namespace {
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struct HexagonOperand;
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class HexagonAsmParser : public MCTargetAsmParser {
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HexagonTargetStreamer &getTargetStreamer() {
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MCTargetStreamer &TS = *Parser.getStreamer().getTargetStreamer();
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return static_cast<HexagonTargetStreamer &>(TS);
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}
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MCAsmParser &Parser;
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MCAssembler *Assembler;
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MCInstrInfo const &MCII;
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MCInst MCB;
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bool InBrackets;
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MCAsmParser &getParser() const { return Parser; }
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MCAssembler *getAssembler() const { return Assembler; }
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MCAsmLexer &getLexer() const { return Parser.getLexer(); }
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bool equalIsAsmAssignment() override { return false; }
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bool isLabel(AsmToken &Token) override;
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void Warning(SMLoc L, const Twine &Msg) { Parser.Warning(L, Msg); }
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bool Error(SMLoc L, const Twine &Msg) { return Parser.Error(L, Msg); }
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bool ParseDirectiveFalign(unsigned Size, SMLoc L);
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bool ParseRegister(unsigned &RegNo, SMLoc &StartLoc, SMLoc &EndLoc) override;
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bool ParseDirectiveSubsection(SMLoc L);
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bool ParseDirectiveValue(unsigned Size, SMLoc L);
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bool ParseDirectiveComm(bool IsLocal, SMLoc L);
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bool RegisterMatchesArch(unsigned MatchNum) const;
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bool matchBundleOptions();
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bool handleNoncontigiousRegister(bool Contigious, SMLoc &Loc);
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bool finishBundle(SMLoc IDLoc, MCStreamer &Out);
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void canonicalizeImmediates(MCInst &MCI);
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bool matchOneInstruction(MCInst &MCB, SMLoc IDLoc,
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OperandVector &InstOperands, uint64_t &ErrorInfo,
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bool MatchingInlineAsm);
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bool MatchAndEmitInstruction(SMLoc IDLoc, unsigned &Opcode,
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OperandVector &Operands, MCStreamer &Out,
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uint64_t &ErrorInfo,
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bool MatchingInlineAsm) override;
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unsigned validateTargetOperandClass(MCParsedAsmOperand &Op,
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unsigned Kind) override;
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bool OutOfRange(SMLoc IDLoc, long long Val, long long Max);
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int processInstruction(MCInst &Inst, OperandVector const &Operands,
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SMLoc IDLoc);
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// Check if we have an assembler and, if so, set the ELF e_header flags.
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void chksetELFHeaderEFlags(unsigned flags) {
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if (getAssembler())
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getAssembler()->setELFHeaderEFlags(flags);
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}
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unsigned matchRegister(StringRef Name);
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/// @name Auto-generated Match Functions
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/// {
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#define GET_ASSEMBLER_HEADER
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#include "HexagonGenAsmMatcher.inc"
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/// }
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public:
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HexagonAsmParser(const MCSubtargetInfo &_STI, MCAsmParser &_Parser,
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const MCInstrInfo &MII, const MCTargetOptions &Options)
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: MCTargetAsmParser(Options, _STI), Parser(_Parser),
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MCII (MII), MCB(HexagonMCInstrInfo::createBundle()), InBrackets(false) {
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setAvailableFeatures(ComputeAvailableFeatures(getSTI().getFeatureBits()));
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MCAsmParserExtension::Initialize(_Parser);
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Assembler = nullptr;
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// FIXME: need better way to detect AsmStreamer (upstream removed getKind())
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if (!Parser.getStreamer().hasRawTextSupport()) {
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MCELFStreamer *MES = static_cast<MCELFStreamer *>(&Parser.getStreamer());
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Assembler = &MES->getAssembler();
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}
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}
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bool splitIdentifier(OperandVector &Operands);
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bool parseOperand(OperandVector &Operands);
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bool parseInstruction(OperandVector &Operands);
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bool implicitExpressionLocation(OperandVector &Operands);
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bool parseExpressionOrOperand(OperandVector &Operands);
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bool parseExpression(MCExpr const *&Expr);
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bool ParseInstruction(ParseInstructionInfo &Info, StringRef Name,
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SMLoc NameLoc, OperandVector &Operands) override {
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llvm_unreachable("Unimplemented");
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}
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bool ParseInstruction(ParseInstructionInfo &Info, StringRef Name, AsmToken ID,
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OperandVector &Operands) override;
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bool ParseDirective(AsmToken DirectiveID) override;
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};
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/// HexagonOperand - Instances of this class represent a parsed Hexagon machine
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/// instruction.
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struct HexagonOperand : public MCParsedAsmOperand {
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enum KindTy { Token, Immediate, Register } Kind;
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SMLoc StartLoc, EndLoc;
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struct TokTy {
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const char *Data;
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unsigned Length;
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};
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struct RegTy {
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unsigned RegNum;
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};
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struct ImmTy {
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const MCExpr *Val;
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};
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struct InstTy {
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OperandVector *SubInsts;
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};
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union {
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struct TokTy Tok;
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struct RegTy Reg;
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struct ImmTy Imm;
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};
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HexagonOperand(KindTy K) : MCParsedAsmOperand(), Kind(K) {}
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public:
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HexagonOperand(const HexagonOperand &o) : MCParsedAsmOperand() {
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Kind = o.Kind;
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StartLoc = o.StartLoc;
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EndLoc = o.EndLoc;
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switch (Kind) {
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case Register:
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Reg = o.Reg;
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break;
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case Immediate:
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Imm = o.Imm;
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break;
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case Token:
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Tok = o.Tok;
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break;
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}
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}
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/// getStartLoc - Get the location of the first token of this operand.
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SMLoc getStartLoc() const override { return StartLoc; }
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/// getEndLoc - Get the location of the last token of this operand.
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SMLoc getEndLoc() const override { return EndLoc; }
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unsigned getReg() const override {
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assert(Kind == Register && "Invalid access!");
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return Reg.RegNum;
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}
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const MCExpr *getImm() const {
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assert(Kind == Immediate && "Invalid access!");
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return Imm.Val;
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}
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bool isToken() const override { return Kind == Token; }
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bool isImm() const override { return Kind == Immediate; }
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bool isMem() const override { llvm_unreachable("No isMem"); }
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bool isReg() const override { return Kind == Register; }
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bool CheckImmRange(int immBits, int zeroBits, bool isSigned,
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bool isRelocatable, bool Extendable) const {
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if (Kind == Immediate) {
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const MCExpr *myMCExpr = &HexagonMCInstrInfo::getExpr(*getImm());
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if (HexagonMCInstrInfo::mustExtend(*Imm.Val) && !Extendable)
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return false;
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int64_t Res;
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if (myMCExpr->evaluateAsAbsolute(Res)) {
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int bits = immBits + zeroBits;
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// Field bit range is zerobits + bits
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// zeroBits must be 0
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if (Res & ((1 << zeroBits) - 1))
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return false;
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if (isSigned) {
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if (Res < (1LL << (bits - 1)) && Res >= -(1LL << (bits - 1)))
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return true;
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} else {
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if (bits == 64)
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return true;
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if (Res >= 0)
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return ((uint64_t)Res < (uint64_t)(1ULL << bits));
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else {
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const int64_t high_bit_set = 1ULL << 63;
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const uint64_t mask = (high_bit_set >> (63 - bits));
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return (((uint64_t)Res & mask) == mask);
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}
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}
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} else if (myMCExpr->getKind() == MCExpr::SymbolRef && isRelocatable)
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return true;
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else if (myMCExpr->getKind() == MCExpr::Binary ||
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myMCExpr->getKind() == MCExpr::Unary)
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return true;
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}
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return false;
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}
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bool isa30_2Imm() const { return CheckImmRange(30, 2, true, true, true); }
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bool isb30_2Imm() const { return CheckImmRange(30, 2, true, true, true); }
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bool isb15_2Imm() const { return CheckImmRange(15, 2, true, true, false); }
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bool isb13_2Imm() const { return CheckImmRange(13, 2, true, true, false); }
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bool ism32_0Imm() const { return true; }
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bool isf32Imm() const { return false; }
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bool isf64Imm() const { return false; }
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bool iss32_0Imm() const { return true; }
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bool iss31_1Imm() const { return true; }
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bool iss30_2Imm() const { return true; }
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bool iss29_3Imm() const { return true; }
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bool iss27_2Imm() const { return CheckImmRange(27, 2, true, true, false); }
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bool iss10_0Imm() const { return CheckImmRange(10, 0, true, false, false); }
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bool iss10_6Imm() const { return CheckImmRange(10, 6, true, false, false); }
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bool iss9_0Imm() const { return CheckImmRange(9, 0, true, false, false); }
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bool iss8_0Imm() const { return CheckImmRange(8, 0, true, false, false); }
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bool iss8_0Imm64() const { return CheckImmRange(8, 0, true, true, false); }
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bool iss7_0Imm() const { return CheckImmRange(7, 0, true, false, false); }
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bool iss6_0Imm() const { return CheckImmRange(6, 0, true, false, false); }
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bool iss6_3Imm() const { return CheckImmRange(6, 3, true, false, false); }
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bool iss4_0Imm() const { return CheckImmRange(4, 0, true, false, false); }
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bool iss4_1Imm() const { return CheckImmRange(4, 1, true, false, false); }
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bool iss4_2Imm() const { return CheckImmRange(4, 2, true, false, false); }
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bool iss4_3Imm() const { return CheckImmRange(4, 3, true, false, false); }
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bool iss3_0Imm() const { return CheckImmRange(3, 0, true, false, false); }
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bool isu64_0Imm() const { return CheckImmRange(64, 0, false, true, true); }
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bool isu32_0Imm() const { return true; }
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bool isu31_1Imm() const { return true; }
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bool isu30_2Imm() const { return true; }
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bool isu29_3Imm() const { return true; }
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bool isu26_6Imm() const { return CheckImmRange(26, 6, false, true, false); }
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bool isu16_0Imm() const { return CheckImmRange(16, 0, false, true, false); }
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bool isu16_1Imm() const { return CheckImmRange(16, 1, false, true, false); }
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bool isu16_2Imm() const { return CheckImmRange(16, 2, false, true, false); }
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bool isu16_3Imm() const { return CheckImmRange(16, 3, false, true, false); }
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bool isu11_3Imm() const { return CheckImmRange(11, 3, false, false, false); }
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bool isu10_0Imm() const { return CheckImmRange(10, 0, false, false, false); }
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bool isu9_0Imm() const { return CheckImmRange(9, 0, false, false, false); }
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bool isu8_0Imm() const { return CheckImmRange(8, 0, false, false, false); }
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bool isu7_0Imm() const { return CheckImmRange(7, 0, false, false, false); }
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bool isu6_0Imm() const { return CheckImmRange(6, 0, false, false, false); }
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bool isu6_1Imm() const { return CheckImmRange(6, 1, false, false, false); }
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bool isu6_2Imm() const { return CheckImmRange(6, 2, false, false, false); }
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bool isu6_3Imm() const { return CheckImmRange(6, 3, false, false, false); }
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bool isu5_0Imm() const { return CheckImmRange(5, 0, false, false, false); }
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bool isu5_2Imm() const { return CheckImmRange(5, 2, false, false, false); }
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bool isu5_3Imm() const { return CheckImmRange(5, 3, false, false, false); }
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bool isu4_0Imm() const { return CheckImmRange(4, 0, false, false, false); }
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bool isu4_2Imm() const { return CheckImmRange(4, 2, false, false, false); }
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bool isu3_0Imm() const { return CheckImmRange(3, 0, false, false, false); }
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bool isu3_1Imm() const { return CheckImmRange(3, 1, false, false, false); }
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bool isu2_0Imm() const { return CheckImmRange(2, 0, false, false, false); }
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bool isu1_0Imm() const { return CheckImmRange(1, 0, false, false, false); }
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bool isn1Const() const {
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if (!isImm())
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return false;
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int64_t Value;
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if (!getImm()->evaluateAsAbsolute(Value))
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return false;
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return Value == -1;
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}
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bool iss11_0Imm() const {
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return CheckImmRange(11 + 26, 0, true, true, true);
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}
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bool iss11_1Imm() const {
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return CheckImmRange(11 + 26, 1, true, true, true);
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}
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bool iss11_2Imm() const {
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return CheckImmRange(11 + 26, 2, true, true, true);
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}
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bool iss11_3Imm() const {
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return CheckImmRange(11 + 26, 3, true, true, true);
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}
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bool isu32_0MustExt() const { return isImm(); }
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void addRegOperands(MCInst &Inst, unsigned N) const {
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assert(N == 1 && "Invalid number of operands!");
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Inst.addOperand(MCOperand::createReg(getReg()));
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}
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void addImmOperands(MCInst &Inst, unsigned N) const {
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assert(N == 1 && "Invalid number of operands!");
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Inst.addOperand(MCOperand::createExpr(getImm()));
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}
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void addSignedImmOperands(MCInst &Inst, unsigned N) const {
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assert(N == 1 && "Invalid number of operands!");
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HexagonMCExpr *Expr =
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const_cast<HexagonMCExpr *>(cast<HexagonMCExpr>(getImm()));
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int64_t Value;
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if (!Expr->evaluateAsAbsolute(Value)) {
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Inst.addOperand(MCOperand::createExpr(Expr));
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return;
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}
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int64_t Extended = SignExtend64(Value, 32);
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if ((Extended < 0) != (Value < 0))
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Expr->setSignMismatch();
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Inst.addOperand(MCOperand::createExpr(Expr));
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}
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void addn1ConstOperands(MCInst &Inst, unsigned N) const {
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addImmOperands(Inst, N);
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}
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StringRef getToken() const {
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assert(Kind == Token && "Invalid access!");
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return StringRef(Tok.Data, Tok.Length);
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}
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void print(raw_ostream &OS) const override;
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static std::unique_ptr<HexagonOperand> CreateToken(StringRef Str, SMLoc S) {
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HexagonOperand *Op = new HexagonOperand(Token);
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Op->Tok.Data = Str.data();
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Op->Tok.Length = Str.size();
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Op->StartLoc = S;
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Op->EndLoc = S;
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return std::unique_ptr<HexagonOperand>(Op);
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}
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static std::unique_ptr<HexagonOperand> CreateReg(unsigned RegNum, SMLoc S,
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SMLoc E) {
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HexagonOperand *Op = new HexagonOperand(Register);
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Op->Reg.RegNum = RegNum;
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Op->StartLoc = S;
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Op->EndLoc = E;
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return std::unique_ptr<HexagonOperand>(Op);
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}
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static std::unique_ptr<HexagonOperand> CreateImm(const MCExpr *Val, SMLoc S,
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SMLoc E) {
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HexagonOperand *Op = new HexagonOperand(Immediate);
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Op->Imm.Val = Val;
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Op->StartLoc = S;
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Op->EndLoc = E;
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return std::unique_ptr<HexagonOperand>(Op);
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}
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};
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} // end anonymous namespace
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void HexagonOperand::print(raw_ostream &OS) const {
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switch (Kind) {
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case Immediate:
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getImm()->print(OS, nullptr);
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break;
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case Register:
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OS << "<register R";
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OS << getReg() << ">";
|
|
break;
|
|
case Token:
|
|
OS << "'" << getToken() << "'";
|
|
break;
|
|
}
|
|
}
|
|
|
|
bool HexagonAsmParser::finishBundle(SMLoc IDLoc, MCStreamer &Out) {
|
|
DEBUG(dbgs() << "Bundle:");
|
|
DEBUG(MCB.dump_pretty(dbgs()));
|
|
DEBUG(dbgs() << "--\n");
|
|
|
|
MCB.setLoc(IDLoc);
|
|
// Check the bundle for errors.
|
|
const MCRegisterInfo *RI = getContext().getRegisterInfo();
|
|
HexagonMCChecker Check(getContext(), MCII, getSTI(), MCB, *RI);
|
|
|
|
bool CheckOk = HexagonMCInstrInfo::canonicalizePacket(MCII, getSTI(),
|
|
getContext(), MCB,
|
|
&Check);
|
|
|
|
if (CheckOk) {
|
|
if (HexagonMCInstrInfo::bundleSize(MCB) == 0) {
|
|
assert(!HexagonMCInstrInfo::isInnerLoop(MCB));
|
|
assert(!HexagonMCInstrInfo::isOuterLoop(MCB));
|
|
// Empty packets are valid yet aren't emitted
|
|
return false;
|
|
}
|
|
Out.EmitInstruction(MCB, getSTI());
|
|
} else {
|
|
// If compounding and duplexing didn't reduce the size below
|
|
// 4 or less we have a packet that is too big.
|
|
if (HexagonMCInstrInfo::bundleSize(MCB) > HEXAGON_PACKET_SIZE) {
|
|
Error(IDLoc, "invalid instruction packet: out of slots");
|
|
return true; // Error
|
|
}
|
|
}
|
|
|
|
return false; // No error
|
|
}
|
|
|
|
bool HexagonAsmParser::matchBundleOptions() {
|
|
MCAsmParser &Parser = getParser();
|
|
while (true) {
|
|
if (!Parser.getTok().is(AsmToken::Colon))
|
|
return false;
|
|
Lex();
|
|
StringRef Option = Parser.getTok().getString();
|
|
if (Option.compare_lower("endloop0") == 0)
|
|
HexagonMCInstrInfo::setInnerLoop(MCB);
|
|
else if (Option.compare_lower("endloop1") == 0)
|
|
HexagonMCInstrInfo::setOuterLoop(MCB);
|
|
else
|
|
return true;
|
|
Lex();
|
|
}
|
|
}
|
|
|
|
// For instruction aliases, immediates are generated rather than
|
|
// MCConstantExpr. Convert them for uniform MCExpr.
|
|
// Also check for signed/unsigned mismatches and warn
|
|
void HexagonAsmParser::canonicalizeImmediates(MCInst &MCI) {
|
|
MCInst NewInst;
|
|
NewInst.setOpcode(MCI.getOpcode());
|
|
for (MCOperand &I : MCI)
|
|
if (I.isImm()) {
|
|
int64_t Value (I.getImm());
|
|
NewInst.addOperand(MCOperand::createExpr(HexagonMCExpr::create(
|
|
MCConstantExpr::create(Value, getContext()), getContext())));
|
|
} else {
|
|
if (I.isExpr() && cast<HexagonMCExpr>(I.getExpr())->signMismatch() &&
|
|
WarnSignedMismatch)
|
|
Warning (MCI.getLoc(), "Signed/Unsigned mismatch");
|
|
NewInst.addOperand(I);
|
|
}
|
|
MCI = NewInst;
|
|
}
|
|
|
|
bool HexagonAsmParser::matchOneInstruction(MCInst &MCI, SMLoc IDLoc,
|
|
OperandVector &InstOperands,
|
|
uint64_t &ErrorInfo,
|
|
bool MatchingInlineAsm) {
|
|
// Perform matching with tablegen asmmatcher generated function
|
|
int result =
|
|
MatchInstructionImpl(InstOperands, MCI, ErrorInfo, MatchingInlineAsm);
|
|
if (result == Match_Success) {
|
|
MCI.setLoc(IDLoc);
|
|
canonicalizeImmediates(MCI);
|
|
result = processInstruction(MCI, InstOperands, IDLoc);
|
|
|
|
DEBUG(dbgs() << "Insn:");
|
|
DEBUG(MCI.dump_pretty(dbgs()));
|
|
DEBUG(dbgs() << "\n\n");
|
|
|
|
MCI.setLoc(IDLoc);
|
|
}
|
|
|
|
// Create instruction operand for bundle instruction
|
|
// Break this into a separate function Code here is less readable
|
|
// Think about how to get an instruction error to report correctly.
|
|
// SMLoc will return the "{"
|
|
switch (result) {
|
|
default:
|
|
break;
|
|
case Match_Success:
|
|
return false;
|
|
case Match_MissingFeature:
|
|
return Error(IDLoc, "invalid instruction");
|
|
case Match_MnemonicFail:
|
|
return Error(IDLoc, "unrecognized instruction");
|
|
case Match_InvalidOperand:
|
|
SMLoc ErrorLoc = IDLoc;
|
|
if (ErrorInfo != ~0U) {
|
|
if (ErrorInfo >= InstOperands.size())
|
|
return Error(IDLoc, "too few operands for instruction");
|
|
|
|
ErrorLoc = (static_cast<HexagonOperand *>(InstOperands[ErrorInfo].get()))
|
|
->getStartLoc();
|
|
if (ErrorLoc == SMLoc())
|
|
ErrorLoc = IDLoc;
|
|
}
|
|
return Error(ErrorLoc, "invalid operand for instruction");
|
|
}
|
|
llvm_unreachable("Implement any new match types added!");
|
|
}
|
|
|
|
bool HexagonAsmParser::MatchAndEmitInstruction(SMLoc IDLoc, unsigned &Opcode,
|
|
OperandVector &Operands,
|
|
MCStreamer &Out,
|
|
uint64_t &ErrorInfo,
|
|
bool MatchingInlineAsm) {
|
|
if (!InBrackets) {
|
|
MCB.clear();
|
|
MCB.addOperand(MCOperand::createImm(0));
|
|
}
|
|
HexagonOperand &FirstOperand = static_cast<HexagonOperand &>(*Operands[0]);
|
|
if (FirstOperand.isToken() && FirstOperand.getToken() == "{") {
|
|
assert(Operands.size() == 1 && "Brackets should be by themselves");
|
|
if (InBrackets) {
|
|
getParser().Error(IDLoc, "Already in a packet");
|
|
return true;
|
|
}
|
|
InBrackets = true;
|
|
return false;
|
|
}
|
|
if (FirstOperand.isToken() && FirstOperand.getToken() == "}") {
|
|
assert(Operands.size() == 1 && "Brackets should be by themselves");
|
|
if (!InBrackets) {
|
|
getParser().Error(IDLoc, "Not in a packet");
|
|
return true;
|
|
}
|
|
InBrackets = false;
|
|
if (matchBundleOptions())
|
|
return true;
|
|
return finishBundle(IDLoc, Out);
|
|
}
|
|
MCInst *SubInst = new (getParser().getContext()) MCInst;
|
|
if (matchOneInstruction(*SubInst, IDLoc, Operands, ErrorInfo,
|
|
MatchingInlineAsm))
|
|
return true;
|
|
HexagonMCInstrInfo::extendIfNeeded(
|
|
getParser().getContext(), MCII, MCB, *SubInst);
|
|
MCB.addOperand(MCOperand::createInst(SubInst));
|
|
if (!InBrackets)
|
|
return finishBundle(IDLoc, Out);
|
|
return false;
|
|
}
|
|
|
|
/// ParseDirective parses the Hexagon specific directives
|
|
bool HexagonAsmParser::ParseDirective(AsmToken DirectiveID) {
|
|
StringRef IDVal = DirectiveID.getIdentifier();
|
|
if ((IDVal.lower() == ".word") || (IDVal.lower() == ".4byte"))
|
|
return ParseDirectiveValue(4, DirectiveID.getLoc());
|
|
if (IDVal.lower() == ".short" || IDVal.lower() == ".hword" ||
|
|
IDVal.lower() == ".half")
|
|
return ParseDirectiveValue(2, DirectiveID.getLoc());
|
|
if (IDVal.lower() == ".falign")
|
|
return ParseDirectiveFalign(256, DirectiveID.getLoc());
|
|
if ((IDVal.lower() == ".lcomm") || (IDVal.lower() == ".lcommon"))
|
|
return ParseDirectiveComm(true, DirectiveID.getLoc());
|
|
if ((IDVal.lower() == ".comm") || (IDVal.lower() == ".common"))
|
|
return ParseDirectiveComm(false, DirectiveID.getLoc());
|
|
if (IDVal.lower() == ".subsection")
|
|
return ParseDirectiveSubsection(DirectiveID.getLoc());
|
|
|
|
return true;
|
|
}
|
|
bool HexagonAsmParser::ParseDirectiveSubsection(SMLoc L) {
|
|
const MCExpr *Subsection = nullptr;
|
|
int64_t Res;
|
|
|
|
assert((getLexer().isNot(AsmToken::EndOfStatement)) &&
|
|
"Invalid subsection directive");
|
|
getParser().parseExpression(Subsection);
|
|
|
|
if (!Subsection->evaluateAsAbsolute(Res))
|
|
return Error(L, "Cannot evaluate subsection number");
|
|
|
|
if (getLexer().isNot(AsmToken::EndOfStatement))
|
|
return TokError("unexpected token in directive");
|
|
|
|
// 0-8192 is the hard-coded range in MCObjectStreamper.cpp, this keeps the
|
|
// negative subsections together and in the same order but at the opposite
|
|
// end of the section. Only legacy hexagon-gcc created assembly code
|
|
// used negative subsections.
|
|
if ((Res < 0) && (Res > -8193))
|
|
Subsection = HexagonMCExpr::create(
|
|
MCConstantExpr::create(8192 + Res, getContext()), getContext());
|
|
|
|
getStreamer().SubSection(Subsection);
|
|
return false;
|
|
}
|
|
|
|
/// ::= .falign [expression]
|
|
bool HexagonAsmParser::ParseDirectiveFalign(unsigned Size, SMLoc L) {
|
|
|
|
int64_t MaxBytesToFill = 15;
|
|
|
|
// if there is an argument
|
|
if (getLexer().isNot(AsmToken::EndOfStatement)) {
|
|
const MCExpr *Value;
|
|
SMLoc ExprLoc = L;
|
|
|
|
// Make sure we have a number (false is returned if expression is a number)
|
|
if (!getParser().parseExpression(Value)) {
|
|
// Make sure this is a number that is in range
|
|
const MCConstantExpr *MCE = dyn_cast<MCConstantExpr>(Value);
|
|
uint64_t IntValue = MCE->getValue();
|
|
if (!isUIntN(Size, IntValue) && !isIntN(Size, IntValue))
|
|
return Error(ExprLoc, "literal value out of range (256) for falign");
|
|
MaxBytesToFill = IntValue;
|
|
Lex();
|
|
} else {
|
|
return Error(ExprLoc, "not a valid expression for falign directive");
|
|
}
|
|
}
|
|
|
|
getTargetStreamer().emitFAlign(16, MaxBytesToFill);
|
|
Lex();
|
|
|
|
return false;
|
|
}
|
|
|
|
/// ::= .word [ expression (, expression)* ]
|
|
bool HexagonAsmParser::ParseDirectiveValue(unsigned Size, SMLoc L) {
|
|
if (getLexer().isNot(AsmToken::EndOfStatement)) {
|
|
while (true) {
|
|
const MCExpr *Value;
|
|
SMLoc ExprLoc = L;
|
|
if (getParser().parseExpression(Value))
|
|
return true;
|
|
|
|
// Special case constant expressions to match code generator.
|
|
if (const MCConstantExpr *MCE = dyn_cast<MCConstantExpr>(Value)) {
|
|
assert(Size <= 8 && "Invalid size");
|
|
uint64_t IntValue = MCE->getValue();
|
|
if (!isUIntN(8 * Size, IntValue) && !isIntN(8 * Size, IntValue))
|
|
return Error(ExprLoc, "literal value out of range for directive");
|
|
getStreamer().EmitIntValue(IntValue, Size);
|
|
} else
|
|
getStreamer().EmitValue(Value, Size);
|
|
|
|
if (getLexer().is(AsmToken::EndOfStatement))
|
|
break;
|
|
|
|
// FIXME: Improve diagnostic.
|
|
if (getLexer().isNot(AsmToken::Comma))
|
|
return TokError("unexpected token in directive");
|
|
Lex();
|
|
}
|
|
}
|
|
|
|
Lex();
|
|
return false;
|
|
}
|
|
|
|
// This is largely a copy of AsmParser's ParseDirectiveComm extended to
|
|
// accept a 3rd argument, AccessAlignment which indicates the smallest
|
|
// memory access made to the symbol, expressed in bytes. If no
|
|
// AccessAlignment is specified it defaults to the Alignment Value.
|
|
// Hexagon's .lcomm:
|
|
// .lcomm Symbol, Length, Alignment, AccessAlignment
|
|
bool HexagonAsmParser::ParseDirectiveComm(bool IsLocal, SMLoc Loc) {
|
|
// FIXME: need better way to detect if AsmStreamer (upstream removed
|
|
// getKind())
|
|
if (getStreamer().hasRawTextSupport())
|
|
return true; // Only object file output requires special treatment.
|
|
|
|
StringRef Name;
|
|
if (getParser().parseIdentifier(Name))
|
|
return TokError("expected identifier in directive");
|
|
// Handle the identifier as the key symbol.
|
|
MCSymbol *Sym = getContext().getOrCreateSymbol(Name);
|
|
|
|
if (getLexer().isNot(AsmToken::Comma))
|
|
return TokError("unexpected token in directive");
|
|
Lex();
|
|
|
|
int64_t Size;
|
|
SMLoc SizeLoc = getLexer().getLoc();
|
|
if (getParser().parseAbsoluteExpression(Size))
|
|
return true;
|
|
|
|
int64_t ByteAlignment = 1;
|
|
SMLoc ByteAlignmentLoc;
|
|
if (getLexer().is(AsmToken::Comma)) {
|
|
Lex();
|
|
ByteAlignmentLoc = getLexer().getLoc();
|
|
if (getParser().parseAbsoluteExpression(ByteAlignment))
|
|
return true;
|
|
if (!isPowerOf2_64(ByteAlignment))
|
|
return Error(ByteAlignmentLoc, "alignment must be a power of 2");
|
|
}
|
|
|
|
int64_t AccessAlignment = 0;
|
|
if (getLexer().is(AsmToken::Comma)) {
|
|
// The optional access argument specifies the size of the smallest memory
|
|
// access to be made to the symbol, expressed in bytes.
|
|
SMLoc AccessAlignmentLoc;
|
|
Lex();
|
|
AccessAlignmentLoc = getLexer().getLoc();
|
|
if (getParser().parseAbsoluteExpression(AccessAlignment))
|
|
return true;
|
|
|
|
if (!isPowerOf2_64(AccessAlignment))
|
|
return Error(AccessAlignmentLoc, "access alignment must be a power of 2");
|
|
}
|
|
|
|
if (getLexer().isNot(AsmToken::EndOfStatement))
|
|
return TokError("unexpected token in '.comm' or '.lcomm' directive");
|
|
|
|
Lex();
|
|
|
|
// NOTE: a size of zero for a .comm should create a undefined symbol
|
|
// but a size of .lcomm creates a bss symbol of size zero.
|
|
if (Size < 0)
|
|
return Error(SizeLoc, "invalid '.comm' or '.lcomm' directive size, can't "
|
|
"be less than zero");
|
|
|
|
// NOTE: The alignment in the directive is a power of 2 value, the assembler
|
|
// may internally end up wanting an alignment in bytes.
|
|
// FIXME: Diagnose overflow.
|
|
if (ByteAlignment < 0)
|
|
return Error(ByteAlignmentLoc, "invalid '.comm' or '.lcomm' directive "
|
|
"alignment, can't be less than zero");
|
|
|
|
if (!Sym->isUndefined())
|
|
return Error(Loc, "invalid symbol redefinition");
|
|
|
|
HexagonMCELFStreamer &HexagonELFStreamer =
|
|
static_cast<HexagonMCELFStreamer &>(getStreamer());
|
|
if (IsLocal) {
|
|
HexagonELFStreamer.HexagonMCEmitLocalCommonSymbol(Sym, Size, ByteAlignment,
|
|
AccessAlignment);
|
|
return false;
|
|
}
|
|
|
|
HexagonELFStreamer.HexagonMCEmitCommonSymbol(Sym, Size, ByteAlignment,
|
|
AccessAlignment);
|
|
return false;
|
|
}
|
|
|
|
// validate register against architecture
|
|
bool HexagonAsmParser::RegisterMatchesArch(unsigned MatchNum) const {
|
|
if (HexagonMCRegisterClasses[Hexagon::V62RegsRegClassID].contains(MatchNum))
|
|
if (!getSTI().getFeatureBits()[Hexagon::ArchV62])
|
|
return false;
|
|
return true;
|
|
}
|
|
|
|
// extern "C" void LLVMInitializeHexagonAsmLexer();
|
|
|
|
/// Force static initialization.
|
|
extern "C" void LLVMInitializeHexagonAsmParser() {
|
|
RegisterMCAsmParser<HexagonAsmParser> X(getTheHexagonTarget());
|
|
}
|
|
|
|
#define GET_MATCHER_IMPLEMENTATION
|
|
#define GET_REGISTER_MATCHER
|
|
#include "HexagonGenAsmMatcher.inc"
|
|
|
|
static bool previousEqual(OperandVector &Operands, size_t Index,
|
|
StringRef String) {
|
|
if (Index >= Operands.size())
|
|
return false;
|
|
MCParsedAsmOperand &Operand = *Operands[Operands.size() - Index - 1];
|
|
if (!Operand.isToken())
|
|
return false;
|
|
return static_cast<HexagonOperand &>(Operand).getToken().equals_lower(String);
|
|
}
|
|
|
|
static bool previousIsLoop(OperandVector &Operands, size_t Index) {
|
|
return previousEqual(Operands, Index, "loop0") ||
|
|
previousEqual(Operands, Index, "loop1") ||
|
|
previousEqual(Operands, Index, "sp1loop0") ||
|
|
previousEqual(Operands, Index, "sp2loop0") ||
|
|
previousEqual(Operands, Index, "sp3loop0");
|
|
}
|
|
|
|
bool HexagonAsmParser::splitIdentifier(OperandVector &Operands) {
|
|
AsmToken const &Token = getParser().getTok();
|
|
StringRef String = Token.getString();
|
|
SMLoc Loc = Token.getLoc();
|
|
Lex();
|
|
do {
|
|
std::pair<StringRef, StringRef> HeadTail = String.split('.');
|
|
if (!HeadTail.first.empty())
|
|
Operands.push_back(HexagonOperand::CreateToken(HeadTail.first, Loc));
|
|
if (!HeadTail.second.empty())
|
|
Operands.push_back(HexagonOperand::CreateToken(
|
|
String.substr(HeadTail.first.size(), 1), Loc));
|
|
String = HeadTail.second;
|
|
} while (!String.empty());
|
|
return false;
|
|
}
|
|
|
|
bool HexagonAsmParser::parseOperand(OperandVector &Operands) {
|
|
unsigned Register;
|
|
SMLoc Begin;
|
|
SMLoc End;
|
|
MCAsmLexer &Lexer = getLexer();
|
|
if (!ParseRegister(Register, Begin, End)) {
|
|
if (!ErrorMissingParenthesis)
|
|
switch (Register) {
|
|
default:
|
|
break;
|
|
case Hexagon::P0:
|
|
case Hexagon::P1:
|
|
case Hexagon::P2:
|
|
case Hexagon::P3:
|
|
if (previousEqual(Operands, 0, "if")) {
|
|
if (WarnMissingParenthesis)
|
|
Warning (Begin, "Missing parenthesis around predicate register");
|
|
static char const *LParen = "(";
|
|
static char const *RParen = ")";
|
|
Operands.push_back(HexagonOperand::CreateToken(LParen, Begin));
|
|
Operands.push_back(HexagonOperand::CreateReg(Register, Begin, End));
|
|
const AsmToken &MaybeDotNew = Lexer.getTok();
|
|
if (MaybeDotNew.is(AsmToken::TokenKind::Identifier) &&
|
|
MaybeDotNew.getString().equals_lower(".new"))
|
|
splitIdentifier(Operands);
|
|
Operands.push_back(HexagonOperand::CreateToken(RParen, Begin));
|
|
return false;
|
|
}
|
|
if (previousEqual(Operands, 0, "!") &&
|
|
previousEqual(Operands, 1, "if")) {
|
|
if (WarnMissingParenthesis)
|
|
Warning (Begin, "Missing parenthesis around predicate register");
|
|
static char const *LParen = "(";
|
|
static char const *RParen = ")";
|
|
Operands.insert(Operands.end () - 1,
|
|
HexagonOperand::CreateToken(LParen, Begin));
|
|
Operands.push_back(HexagonOperand::CreateReg(Register, Begin, End));
|
|
const AsmToken &MaybeDotNew = Lexer.getTok();
|
|
if (MaybeDotNew.is(AsmToken::TokenKind::Identifier) &&
|
|
MaybeDotNew.getString().equals_lower(".new"))
|
|
splitIdentifier(Operands);
|
|
Operands.push_back(HexagonOperand::CreateToken(RParen, Begin));
|
|
return false;
|
|
}
|
|
break;
|
|
}
|
|
Operands.push_back(HexagonOperand::CreateReg(
|
|
Register, Begin, End));
|
|
return false;
|
|
}
|
|
return splitIdentifier(Operands);
|
|
}
|
|
|
|
bool HexagonAsmParser::isLabel(AsmToken &Token) {
|
|
MCAsmLexer &Lexer = getLexer();
|
|
AsmToken const &Second = Lexer.getTok();
|
|
AsmToken Third = Lexer.peekTok();
|
|
StringRef String = Token.getString();
|
|
if (Token.is(AsmToken::TokenKind::LCurly) ||
|
|
Token.is(AsmToken::TokenKind::RCurly))
|
|
return false;
|
|
// special case for parsing vwhist256:sat
|
|
if (String.lower() == "vwhist256" && Second.is(AsmToken::Colon) &&
|
|
Third.getString().lower() == "sat")
|
|
return false;
|
|
if (!Token.is(AsmToken::TokenKind::Identifier))
|
|
return true;
|
|
if (!matchRegister(String.lower()))
|
|
return true;
|
|
(void)Second;
|
|
assert(Second.is(AsmToken::Colon));
|
|
StringRef Raw (String.data(), Third.getString().data() - String.data() +
|
|
Third.getString().size());
|
|
std::string Collapsed = Raw;
|
|
Collapsed.erase(llvm::remove_if(Collapsed, isspace), Collapsed.end());
|
|
StringRef Whole = Collapsed;
|
|
std::pair<StringRef, StringRef> DotSplit = Whole.split('.');
|
|
if (!matchRegister(DotSplit.first.lower()))
|
|
return true;
|
|
return false;
|
|
}
|
|
|
|
bool HexagonAsmParser::handleNoncontigiousRegister(bool Contigious, SMLoc &Loc) {
|
|
if (!Contigious && ErrorNoncontigiousRegister) {
|
|
Error(Loc, "Register name is not contigious");
|
|
return true;
|
|
}
|
|
if (!Contigious && WarnNoncontigiousRegister)
|
|
Warning(Loc, "Register name is not contigious");
|
|
return false;
|
|
}
|
|
|
|
bool HexagonAsmParser::ParseRegister(unsigned &RegNo, SMLoc &StartLoc, SMLoc &EndLoc) {
|
|
MCAsmLexer &Lexer = getLexer();
|
|
StartLoc = getLexer().getLoc();
|
|
SmallVector<AsmToken, 5> Lookahead;
|
|
StringRef RawString(Lexer.getTok().getString().data(), 0);
|
|
bool Again = Lexer.is(AsmToken::Identifier);
|
|
bool NeededWorkaround = false;
|
|
while (Again) {
|
|
AsmToken const &Token = Lexer.getTok();
|
|
RawString = StringRef(RawString.data(),
|
|
Token.getString().data() - RawString.data () +
|
|
Token.getString().size());
|
|
Lookahead.push_back(Token);
|
|
Lexer.Lex();
|
|
bool Contigious = Lexer.getTok().getString().data() ==
|
|
Lookahead.back().getString().data() +
|
|
Lookahead.back().getString().size();
|
|
bool Type = Lexer.is(AsmToken::Identifier) || Lexer.is(AsmToken::Dot) ||
|
|
Lexer.is(AsmToken::Integer) || Lexer.is(AsmToken::Real) ||
|
|
Lexer.is(AsmToken::Colon);
|
|
bool Workaround = Lexer.is(AsmToken::Colon) ||
|
|
Lookahead.back().is(AsmToken::Colon);
|
|
Again = (Contigious && Type) || (Workaround && Type);
|
|
NeededWorkaround = NeededWorkaround || (Again && !(Contigious && Type));
|
|
}
|
|
std::string Collapsed = RawString;
|
|
Collapsed.erase(llvm::remove_if(Collapsed, isspace), Collapsed.end());
|
|
StringRef FullString = Collapsed;
|
|
std::pair<StringRef, StringRef> DotSplit = FullString.split('.');
|
|
unsigned DotReg = matchRegister(DotSplit.first.lower());
|
|
if (DotReg != Hexagon::NoRegister && RegisterMatchesArch(DotReg)) {
|
|
if (DotSplit.second.empty()) {
|
|
RegNo = DotReg;
|
|
EndLoc = Lexer.getLoc();
|
|
if (handleNoncontigiousRegister(!NeededWorkaround, StartLoc))
|
|
return true;
|
|
return false;
|
|
} else {
|
|
RegNo = DotReg;
|
|
size_t First = RawString.find('.');
|
|
StringRef DotString (RawString.data() + First, RawString.size() - First);
|
|
Lexer.UnLex(AsmToken(AsmToken::Identifier, DotString));
|
|
EndLoc = Lexer.getLoc();
|
|
if (handleNoncontigiousRegister(!NeededWorkaround, StartLoc))
|
|
return true;
|
|
return false;
|
|
}
|
|
}
|
|
std::pair<StringRef, StringRef> ColonSplit = StringRef(FullString).split(':');
|
|
unsigned ColonReg = matchRegister(ColonSplit.first.lower());
|
|
if (ColonReg != Hexagon::NoRegister && RegisterMatchesArch(DotReg)) {
|
|
Lexer.UnLex(Lookahead.back());
|
|
Lookahead.pop_back();
|
|
Lexer.UnLex(Lookahead.back());
|
|
Lookahead.pop_back();
|
|
RegNo = ColonReg;
|
|
EndLoc = Lexer.getLoc();
|
|
if (handleNoncontigiousRegister(!NeededWorkaround, StartLoc))
|
|
return true;
|
|
return false;
|
|
}
|
|
while (!Lookahead.empty()) {
|
|
Lexer.UnLex(Lookahead.back());
|
|
Lookahead.pop_back();
|
|
}
|
|
return true;
|
|
}
|
|
|
|
bool HexagonAsmParser::implicitExpressionLocation(OperandVector &Operands) {
|
|
if (previousEqual(Operands, 0, "call"))
|
|
return true;
|
|
if (previousEqual(Operands, 0, "jump"))
|
|
if (!getLexer().getTok().is(AsmToken::Colon))
|
|
return true;
|
|
if (previousEqual(Operands, 0, "(") && previousIsLoop(Operands, 1))
|
|
return true;
|
|
if (previousEqual(Operands, 1, ":") && previousEqual(Operands, 2, "jump") &&
|
|
(previousEqual(Operands, 0, "nt") || previousEqual(Operands, 0, "t")))
|
|
return true;
|
|
return false;
|
|
}
|
|
|
|
bool HexagonAsmParser::parseExpression(MCExpr const *& Expr) {
|
|
SmallVector<AsmToken, 4> Tokens;
|
|
MCAsmLexer &Lexer = getLexer();
|
|
bool Done = false;
|
|
static char const * Comma = ",";
|
|
do {
|
|
Tokens.emplace_back (Lexer.getTok());
|
|
Lex();
|
|
switch (Tokens.back().getKind())
|
|
{
|
|
case AsmToken::TokenKind::Hash:
|
|
if (Tokens.size () > 1)
|
|
if ((Tokens.end () - 2)->getKind() == AsmToken::TokenKind::Plus) {
|
|
Tokens.insert(Tokens.end() - 2,
|
|
AsmToken(AsmToken::TokenKind::Comma, Comma));
|
|
Done = true;
|
|
}
|
|
break;
|
|
case AsmToken::TokenKind::RCurly:
|
|
case AsmToken::TokenKind::EndOfStatement:
|
|
case AsmToken::TokenKind::Eof:
|
|
Done = true;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
} while (!Done);
|
|
while (!Tokens.empty()) {
|
|
Lexer.UnLex(Tokens.back());
|
|
Tokens.pop_back();
|
|
}
|
|
return getParser().parseExpression(Expr);
|
|
}
|
|
|
|
bool HexagonAsmParser::parseExpressionOrOperand(OperandVector &Operands) {
|
|
if (implicitExpressionLocation(Operands)) {
|
|
MCAsmParser &Parser = getParser();
|
|
SMLoc Loc = Parser.getLexer().getLoc();
|
|
MCExpr const *Expr = nullptr;
|
|
bool Error = parseExpression(Expr);
|
|
Expr = HexagonMCExpr::create(Expr, getContext());
|
|
if (!Error)
|
|
Operands.push_back(HexagonOperand::CreateImm(Expr, Loc, Loc));
|
|
return Error;
|
|
}
|
|
return parseOperand(Operands);
|
|
}
|
|
|
|
/// Parse an instruction.
|
|
bool HexagonAsmParser::parseInstruction(OperandVector &Operands) {
|
|
MCAsmParser &Parser = getParser();
|
|
MCAsmLexer &Lexer = getLexer();
|
|
while (true) {
|
|
AsmToken const &Token = Parser.getTok();
|
|
switch (Token.getKind()) {
|
|
case AsmToken::EndOfStatement: {
|
|
Lex();
|
|
return false;
|
|
}
|
|
case AsmToken::LCurly: {
|
|
if (!Operands.empty())
|
|
return true;
|
|
Operands.push_back(
|
|
HexagonOperand::CreateToken(Token.getString(), Token.getLoc()));
|
|
Lex();
|
|
return false;
|
|
}
|
|
case AsmToken::RCurly: {
|
|
if (Operands.empty()) {
|
|
Operands.push_back(
|
|
HexagonOperand::CreateToken(Token.getString(), Token.getLoc()));
|
|
Lex();
|
|
}
|
|
return false;
|
|
}
|
|
case AsmToken::Comma: {
|
|
Lex();
|
|
continue;
|
|
}
|
|
case AsmToken::EqualEqual:
|
|
case AsmToken::ExclaimEqual:
|
|
case AsmToken::GreaterEqual:
|
|
case AsmToken::GreaterGreater:
|
|
case AsmToken::LessEqual:
|
|
case AsmToken::LessLess: {
|
|
Operands.push_back(HexagonOperand::CreateToken(
|
|
Token.getString().substr(0, 1), Token.getLoc()));
|
|
Operands.push_back(HexagonOperand::CreateToken(
|
|
Token.getString().substr(1, 1), Token.getLoc()));
|
|
Lex();
|
|
continue;
|
|
}
|
|
case AsmToken::Hash: {
|
|
bool MustNotExtend = false;
|
|
bool ImplicitExpression = implicitExpressionLocation(Operands);
|
|
SMLoc ExprLoc = Lexer.getLoc();
|
|
if (!ImplicitExpression)
|
|
Operands.push_back(
|
|
HexagonOperand::CreateToken(Token.getString(), Token.getLoc()));
|
|
Lex();
|
|
bool MustExtend = false;
|
|
bool HiOnly = false;
|
|
bool LoOnly = false;
|
|
if (Lexer.is(AsmToken::Hash)) {
|
|
Lex();
|
|
MustExtend = true;
|
|
} else if (ImplicitExpression)
|
|
MustNotExtend = true;
|
|
AsmToken const &Token = Parser.getTok();
|
|
if (Token.is(AsmToken::Identifier)) {
|
|
StringRef String = Token.getString();
|
|
if (String.lower() == "hi") {
|
|
HiOnly = true;
|
|
} else if (String.lower() == "lo") {
|
|
LoOnly = true;
|
|
}
|
|
if (HiOnly || LoOnly) {
|
|
AsmToken LParen = Lexer.peekTok();
|
|
if (!LParen.is(AsmToken::LParen)) {
|
|
HiOnly = false;
|
|
LoOnly = false;
|
|
} else {
|
|
Lex();
|
|
}
|
|
}
|
|
}
|
|
MCExpr const *Expr = nullptr;
|
|
if (parseExpression(Expr))
|
|
return true;
|
|
int64_t Value;
|
|
MCContext &Context = Parser.getContext();
|
|
assert(Expr != nullptr);
|
|
if (Expr->evaluateAsAbsolute(Value)) {
|
|
if (HiOnly)
|
|
Expr = MCBinaryExpr::createLShr(
|
|
Expr, MCConstantExpr::create(16, Context), Context);
|
|
if (HiOnly || LoOnly)
|
|
Expr = MCBinaryExpr::createAnd(Expr,
|
|
MCConstantExpr::create(0xffff, Context),
|
|
Context);
|
|
} else {
|
|
MCValue Value;
|
|
if (Expr->evaluateAsRelocatable(Value, nullptr, nullptr)) {
|
|
if (!Value.isAbsolute()) {
|
|
switch(Value.getAccessVariant()) {
|
|
case MCSymbolRefExpr::VariantKind::VK_TPREL:
|
|
case MCSymbolRefExpr::VariantKind::VK_DTPREL:
|
|
// Don't lazy extend these expression variants
|
|
MustNotExtend = !MustExtend;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
Expr = HexagonMCExpr::create(Expr, Context);
|
|
HexagonMCInstrInfo::setMustNotExtend(*Expr, MustNotExtend);
|
|
HexagonMCInstrInfo::setMustExtend(*Expr, MustExtend);
|
|
std::unique_ptr<HexagonOperand> Operand =
|
|
HexagonOperand::CreateImm(Expr, ExprLoc, ExprLoc);
|
|
Operands.push_back(std::move(Operand));
|
|
continue;
|
|
}
|
|
default:
|
|
break;
|
|
}
|
|
if (parseExpressionOrOperand(Operands))
|
|
return true;
|
|
}
|
|
}
|
|
|
|
bool HexagonAsmParser::ParseInstruction(ParseInstructionInfo &Info,
|
|
StringRef Name,
|
|
AsmToken ID,
|
|
OperandVector &Operands) {
|
|
getLexer().UnLex(ID);
|
|
return parseInstruction(Operands);
|
|
}
|
|
|
|
static MCInst makeCombineInst(int opCode, MCOperand &Rdd,
|
|
MCOperand &MO1, MCOperand &MO2) {
|
|
MCInst TmpInst;
|
|
TmpInst.setOpcode(opCode);
|
|
TmpInst.addOperand(Rdd);
|
|
TmpInst.addOperand(MO1);
|
|
TmpInst.addOperand(MO2);
|
|
|
|
return TmpInst;
|
|
}
|
|
|
|
// Define this matcher function after the auto-generated include so we
|
|
// have the match class enum definitions.
|
|
unsigned HexagonAsmParser::validateTargetOperandClass(MCParsedAsmOperand &AsmOp,
|
|
unsigned Kind) {
|
|
HexagonOperand *Op = static_cast<HexagonOperand *>(&AsmOp);
|
|
|
|
switch (Kind) {
|
|
case MCK_0: {
|
|
int64_t Value;
|
|
return Op->isImm() && Op->Imm.Val->evaluateAsAbsolute(Value) && Value == 0
|
|
? Match_Success
|
|
: Match_InvalidOperand;
|
|
}
|
|
case MCK_1: {
|
|
int64_t Value;
|
|
return Op->isImm() && Op->Imm.Val->evaluateAsAbsolute(Value) && Value == 1
|
|
? Match_Success
|
|
: Match_InvalidOperand;
|
|
}
|
|
}
|
|
if (Op->Kind == HexagonOperand::Token && Kind != InvalidMatchClass) {
|
|
StringRef myStringRef = StringRef(Op->Tok.Data, Op->Tok.Length);
|
|
if (matchTokenString(myStringRef.lower()) == (MatchClassKind)Kind)
|
|
return Match_Success;
|
|
if (matchTokenString(myStringRef.upper()) == (MatchClassKind)Kind)
|
|
return Match_Success;
|
|
}
|
|
|
|
DEBUG(dbgs() << "Unmatched Operand:");
|
|
DEBUG(Op->dump());
|
|
DEBUG(dbgs() << "\n");
|
|
|
|
return Match_InvalidOperand;
|
|
}
|
|
|
|
// FIXME: Calls to OutOfRange shoudl propagate failure up to parseStatement.
|
|
bool HexagonAsmParser::OutOfRange(SMLoc IDLoc, long long Val, long long Max) {
|
|
std::string errStr;
|
|
raw_string_ostream ES(errStr);
|
|
ES << "value " << Val << "(" << format_hex(Val, 0) << ") out of range: ";
|
|
if (Max >= 0)
|
|
ES << "0-" << Max;
|
|
else
|
|
ES << Max << "-" << (-Max - 1);
|
|
return Parser.printError(IDLoc, ES.str());
|
|
}
|
|
|
|
int HexagonAsmParser::processInstruction(MCInst &Inst,
|
|
OperandVector const &Operands,
|
|
SMLoc IDLoc) {
|
|
MCContext &Context = getParser().getContext();
|
|
const MCRegisterInfo *RI = getContext().getRegisterInfo();
|
|
std::string r = "r";
|
|
std::string v = "v";
|
|
std::string Colon = ":";
|
|
|
|
bool is32bit = false; // used to distinguish between CONST32 and CONST64
|
|
switch (Inst.getOpcode()) {
|
|
default:
|
|
break;
|
|
|
|
case Hexagon::A2_iconst: {
|
|
Inst.setOpcode(Hexagon::A2_addi);
|
|
MCOperand Reg = Inst.getOperand(0);
|
|
MCOperand S27 = Inst.getOperand(1);
|
|
HexagonMCInstrInfo::setMustNotExtend(*S27.getExpr());
|
|
HexagonMCInstrInfo::setS27_2_reloc(*S27.getExpr());
|
|
Inst.clear();
|
|
Inst.addOperand(Reg);
|
|
Inst.addOperand(MCOperand::createReg(Hexagon::R0));
|
|
Inst.addOperand(S27);
|
|
break;
|
|
}
|
|
case Hexagon::M4_mpyrr_addr:
|
|
case Hexagon::S4_addi_asl_ri:
|
|
case Hexagon::S4_addi_lsr_ri:
|
|
case Hexagon::S4_andi_asl_ri:
|
|
case Hexagon::S4_andi_lsr_ri:
|
|
case Hexagon::S4_ori_asl_ri:
|
|
case Hexagon::S4_ori_lsr_ri:
|
|
case Hexagon::S4_or_andix:
|
|
case Hexagon::S4_subi_asl_ri:
|
|
case Hexagon::S4_subi_lsr_ri: {
|
|
MCOperand &Ry = Inst.getOperand(0);
|
|
MCOperand &src = Inst.getOperand(2);
|
|
if (RI->getEncodingValue(Ry.getReg()) != RI->getEncodingValue(src.getReg()))
|
|
return Match_InvalidOperand;
|
|
break;
|
|
}
|
|
|
|
case Hexagon::C2_cmpgei: {
|
|
MCOperand &MO = Inst.getOperand(2);
|
|
MO.setExpr(HexagonMCExpr::create(MCBinaryExpr::createSub(
|
|
MO.getExpr(), MCConstantExpr::create(1, Context), Context), Context));
|
|
Inst.setOpcode(Hexagon::C2_cmpgti);
|
|
break;
|
|
}
|
|
|
|
case Hexagon::C2_cmpgeui: {
|
|
MCOperand &MO = Inst.getOperand(2);
|
|
int64_t Value;
|
|
bool Success = MO.getExpr()->evaluateAsAbsolute(Value);
|
|
(void)Success;
|
|
assert(Success && "Assured by matcher");
|
|
if (Value == 0) {
|
|
MCInst TmpInst;
|
|
MCOperand &Pd = Inst.getOperand(0);
|
|
MCOperand &Rt = Inst.getOperand(1);
|
|
TmpInst.setOpcode(Hexagon::C2_cmpeq);
|
|
TmpInst.addOperand(Pd);
|
|
TmpInst.addOperand(Rt);
|
|
TmpInst.addOperand(Rt);
|
|
Inst = TmpInst;
|
|
} else {
|
|
MO.setExpr(HexagonMCExpr::create(MCBinaryExpr::createSub(
|
|
MO.getExpr(), MCConstantExpr::create(1, Context), Context), Context));
|
|
Inst.setOpcode(Hexagon::C2_cmpgtui);
|
|
}
|
|
break;
|
|
}
|
|
|
|
// Translate a "$Rdd = $Rss" to "$Rdd = combine($Rs, $Rt)"
|
|
case Hexagon::A2_tfrp: {
|
|
MCOperand &MO = Inst.getOperand(1);
|
|
unsigned int RegPairNum = RI->getEncodingValue(MO.getReg());
|
|
std::string R1 = r + utostr(RegPairNum + 1);
|
|
StringRef Reg1(R1);
|
|
MO.setReg(matchRegister(Reg1));
|
|
// Add a new operand for the second register in the pair.
|
|
std::string R2 = r + utostr(RegPairNum);
|
|
StringRef Reg2(R2);
|
|
Inst.addOperand(MCOperand::createReg(matchRegister(Reg2)));
|
|
Inst.setOpcode(Hexagon::A2_combinew);
|
|
break;
|
|
}
|
|
|
|
case Hexagon::A2_tfrpt:
|
|
case Hexagon::A2_tfrpf: {
|
|
MCOperand &MO = Inst.getOperand(2);
|
|
unsigned int RegPairNum = RI->getEncodingValue(MO.getReg());
|
|
std::string R1 = r + utostr(RegPairNum + 1);
|
|
StringRef Reg1(R1);
|
|
MO.setReg(matchRegister(Reg1));
|
|
// Add a new operand for the second register in the pair.
|
|
std::string R2 = r + utostr(RegPairNum);
|
|
StringRef Reg2(R2);
|
|
Inst.addOperand(MCOperand::createReg(matchRegister(Reg2)));
|
|
Inst.setOpcode((Inst.getOpcode() == Hexagon::A2_tfrpt)
|
|
? Hexagon::C2_ccombinewt
|
|
: Hexagon::C2_ccombinewf);
|
|
break;
|
|
}
|
|
case Hexagon::A2_tfrptnew:
|
|
case Hexagon::A2_tfrpfnew: {
|
|
MCOperand &MO = Inst.getOperand(2);
|
|
unsigned int RegPairNum = RI->getEncodingValue(MO.getReg());
|
|
std::string R1 = r + utostr(RegPairNum + 1);
|
|
StringRef Reg1(R1);
|
|
MO.setReg(matchRegister(Reg1));
|
|
// Add a new operand for the second register in the pair.
|
|
std::string R2 = r + utostr(RegPairNum);
|
|
StringRef Reg2(R2);
|
|
Inst.addOperand(MCOperand::createReg(matchRegister(Reg2)));
|
|
Inst.setOpcode((Inst.getOpcode() == Hexagon::A2_tfrptnew)
|
|
? Hexagon::C2_ccombinewnewt
|
|
: Hexagon::C2_ccombinewnewf);
|
|
break;
|
|
}
|
|
|
|
// Translate a "$Vdd = $Vss" to "$Vdd = vcombine($Vs, $Vt)"
|
|
case Hexagon::V6_vassignp: {
|
|
MCOperand &MO = Inst.getOperand(1);
|
|
unsigned int RegPairNum = RI->getEncodingValue(MO.getReg());
|
|
std::string R1 = v + utostr(RegPairNum + 1);
|
|
MO.setReg(MatchRegisterName(R1));
|
|
// Add a new operand for the second register in the pair.
|
|
std::string R2 = v + utostr(RegPairNum);
|
|
Inst.addOperand(MCOperand::createReg(MatchRegisterName(R2)));
|
|
Inst.setOpcode(Hexagon::V6_vcombine);
|
|
break;
|
|
}
|
|
|
|
// Translate a "$Rx = CONST32(#imm)" to "$Rx = memw(gp+#LABEL) "
|
|
case Hexagon::CONST32:
|
|
is32bit = true;
|
|
// Translate a "$Rx:y = CONST64(#imm)" to "$Rx:y = memd(gp+#LABEL) "
|
|
case Hexagon::CONST64:
|
|
// FIXME: need better way to detect AsmStreamer (upstream removed getKind())
|
|
if (!Parser.getStreamer().hasRawTextSupport()) {
|
|
MCELFStreamer *MES = static_cast<MCELFStreamer *>(&Parser.getStreamer());
|
|
MCOperand &MO_1 = Inst.getOperand(1);
|
|
MCOperand &MO_0 = Inst.getOperand(0);
|
|
|
|
// push section onto section stack
|
|
MES->PushSection();
|
|
|
|
std::string myCharStr;
|
|
MCSectionELF *mySection;
|
|
|
|
// check if this as an immediate or a symbol
|
|
int64_t Value;
|
|
bool Absolute = MO_1.getExpr()->evaluateAsAbsolute(Value);
|
|
if (Absolute) {
|
|
// Create a new section - one for each constant
|
|
// Some or all of the zeros are replaced with the given immediate.
|
|
if (is32bit) {
|
|
std::string myImmStr = utohexstr(static_cast<uint32_t>(Value));
|
|
myCharStr = StringRef(".gnu.linkonce.l4.CONST_00000000")
|
|
.drop_back(myImmStr.size())
|
|
.str() +
|
|
myImmStr;
|
|
} else {
|
|
std::string myImmStr = utohexstr(Value);
|
|
myCharStr = StringRef(".gnu.linkonce.l8.CONST_0000000000000000")
|
|
.drop_back(myImmStr.size())
|
|
.str() +
|
|
myImmStr;
|
|
}
|
|
|
|
mySection = getContext().getELFSection(myCharStr, ELF::SHT_PROGBITS,
|
|
ELF::SHF_ALLOC | ELF::SHF_WRITE);
|
|
} else if (MO_1.isExpr()) {
|
|
// .lita - for expressions
|
|
myCharStr = ".lita";
|
|
mySection = getContext().getELFSection(myCharStr, ELF::SHT_PROGBITS,
|
|
ELF::SHF_ALLOC | ELF::SHF_WRITE);
|
|
} else
|
|
llvm_unreachable("unexpected type of machine operand!");
|
|
|
|
MES->SwitchSection(mySection);
|
|
unsigned byteSize = is32bit ? 4 : 8;
|
|
getStreamer().EmitCodeAlignment(byteSize, byteSize);
|
|
|
|
MCSymbol *Sym;
|
|
|
|
// for symbols, get rid of prepended ".gnu.linkonce.lx."
|
|
|
|
// emit symbol if needed
|
|
if (Absolute) {
|
|
Sym = getContext().getOrCreateSymbol(StringRef(myCharStr.c_str() + 16));
|
|
if (Sym->isUndefined()) {
|
|
getStreamer().EmitLabel(Sym);
|
|
getStreamer().EmitSymbolAttribute(Sym, MCSA_Global);
|
|
getStreamer().EmitIntValue(Value, byteSize);
|
|
}
|
|
} else if (MO_1.isExpr()) {
|
|
const char *StringStart = nullptr;
|
|
const char *StringEnd = nullptr;
|
|
if (*Operands[4]->getStartLoc().getPointer() == '#') {
|
|
StringStart = Operands[5]->getStartLoc().getPointer();
|
|
StringEnd = Operands[6]->getStartLoc().getPointer();
|
|
} else { // no pound
|
|
StringStart = Operands[4]->getStartLoc().getPointer();
|
|
StringEnd = Operands[5]->getStartLoc().getPointer();
|
|
}
|
|
|
|
unsigned size = StringEnd - StringStart;
|
|
std::string DotConst = ".CONST_";
|
|
Sym = getContext().getOrCreateSymbol(DotConst +
|
|
StringRef(StringStart, size));
|
|
|
|
if (Sym->isUndefined()) {
|
|
// case where symbol is not yet defined: emit symbol
|
|
getStreamer().EmitLabel(Sym);
|
|
getStreamer().EmitSymbolAttribute(Sym, MCSA_Local);
|
|
getStreamer().EmitValue(MO_1.getExpr(), 4);
|
|
}
|
|
} else
|
|
llvm_unreachable("unexpected type of machine operand!");
|
|
|
|
MES->PopSection();
|
|
|
|
if (Sym) {
|
|
MCInst TmpInst;
|
|
if (is32bit) // 32 bit
|
|
TmpInst.setOpcode(Hexagon::L2_loadrigp);
|
|
else // 64 bit
|
|
TmpInst.setOpcode(Hexagon::L2_loadrdgp);
|
|
|
|
TmpInst.addOperand(MO_0);
|
|
TmpInst.addOperand(MCOperand::createExpr(HexagonMCExpr::create(
|
|
MCSymbolRefExpr::create(Sym, getContext()), getContext())));
|
|
Inst = TmpInst;
|
|
}
|
|
}
|
|
break;
|
|
|
|
// Translate a "$Rdd = #-imm" to "$Rdd = combine(#[-1,0], #-imm)"
|
|
case Hexagon::A2_tfrpi: {
|
|
MCOperand &Rdd = Inst.getOperand(0);
|
|
MCOperand &MO = Inst.getOperand(1);
|
|
int64_t Value;
|
|
int sVal = (MO.getExpr()->evaluateAsAbsolute(Value) && Value < 0) ? -1 : 0;
|
|
MCOperand imm(MCOperand::createExpr(
|
|
HexagonMCExpr::create(MCConstantExpr::create(sVal, Context), Context)));
|
|
Inst = makeCombineInst(Hexagon::A2_combineii, Rdd, imm, MO);
|
|
break;
|
|
}
|
|
|
|
// Translate a "$Rdd = [#]#imm" to "$Rdd = combine(#, [#]#imm)"
|
|
case Hexagon::TFRI64_V4: {
|
|
MCOperand &Rdd = Inst.getOperand(0);
|
|
MCOperand &MO = Inst.getOperand(1);
|
|
int64_t Value;
|
|
if (MO.getExpr()->evaluateAsAbsolute(Value)) {
|
|
int s8 = Hi_32(Value);
|
|
if (!isInt<8>(s8))
|
|
OutOfRange(IDLoc, s8, -128);
|
|
MCOperand imm(MCOperand::createExpr(HexagonMCExpr::create(
|
|
MCConstantExpr::create(s8, Context), Context))); // upper 32
|
|
auto Expr = HexagonMCExpr::create(
|
|
MCConstantExpr::create(Lo_32(Value), Context), Context);
|
|
HexagonMCInstrInfo::setMustExtend(*Expr, HexagonMCInstrInfo::mustExtend(*MO.getExpr()));
|
|
MCOperand imm2(MCOperand::createExpr(Expr)); // lower 32
|
|
Inst = makeCombineInst(Hexagon::A4_combineii, Rdd, imm, imm2);
|
|
} else {
|
|
MCOperand imm(MCOperand::createExpr(HexagonMCExpr::create(
|
|
MCConstantExpr::create(0, Context), Context))); // upper 32
|
|
Inst = makeCombineInst(Hexagon::A4_combineii, Rdd, imm, MO);
|
|
}
|
|
break;
|
|
}
|
|
|
|
// Handle $Rdd = combine(##imm, #imm)"
|
|
case Hexagon::TFRI64_V2_ext: {
|
|
MCOperand &Rdd = Inst.getOperand(0);
|
|
MCOperand &MO1 = Inst.getOperand(1);
|
|
MCOperand &MO2 = Inst.getOperand(2);
|
|
int64_t Value;
|
|
if (MO2.getExpr()->evaluateAsAbsolute(Value)) {
|
|
int s8 = Value;
|
|
if (s8 < -128 || s8 > 127)
|
|
OutOfRange(IDLoc, s8, -128);
|
|
}
|
|
Inst = makeCombineInst(Hexagon::A2_combineii, Rdd, MO1, MO2);
|
|
break;
|
|
}
|
|
|
|
// Handle $Rdd = combine(#imm, ##imm)"
|
|
case Hexagon::A4_combineii: {
|
|
MCOperand &Rdd = Inst.getOperand(0);
|
|
MCOperand &MO1 = Inst.getOperand(1);
|
|
int64_t Value;
|
|
if (MO1.getExpr()->evaluateAsAbsolute(Value)) {
|
|
int s8 = Value;
|
|
if (s8 < -128 || s8 > 127)
|
|
OutOfRange(IDLoc, s8, -128);
|
|
}
|
|
MCOperand &MO2 = Inst.getOperand(2);
|
|
Inst = makeCombineInst(Hexagon::A4_combineii, Rdd, MO1, MO2);
|
|
break;
|
|
}
|
|
|
|
case Hexagon::S2_tableidxb_goodsyntax:
|
|
Inst.setOpcode(Hexagon::S2_tableidxb);
|
|
break;
|
|
|
|
case Hexagon::S2_tableidxh_goodsyntax: {
|
|
MCInst TmpInst;
|
|
MCOperand &Rx = Inst.getOperand(0);
|
|
MCOperand &_dst_ = Inst.getOperand(1);
|
|
MCOperand &Rs = Inst.getOperand(2);
|
|
MCOperand &Imm4 = Inst.getOperand(3);
|
|
MCOperand &Imm6 = Inst.getOperand(4);
|
|
Imm6.setExpr(HexagonMCExpr::create(MCBinaryExpr::createSub(
|
|
Imm6.getExpr(), MCConstantExpr::create(1, Context), Context), Context));
|
|
TmpInst.setOpcode(Hexagon::S2_tableidxh);
|
|
TmpInst.addOperand(Rx);
|
|
TmpInst.addOperand(_dst_);
|
|
TmpInst.addOperand(Rs);
|
|
TmpInst.addOperand(Imm4);
|
|
TmpInst.addOperand(Imm6);
|
|
Inst = TmpInst;
|
|
break;
|
|
}
|
|
|
|
case Hexagon::S2_tableidxw_goodsyntax: {
|
|
MCInst TmpInst;
|
|
MCOperand &Rx = Inst.getOperand(0);
|
|
MCOperand &_dst_ = Inst.getOperand(1);
|
|
MCOperand &Rs = Inst.getOperand(2);
|
|
MCOperand &Imm4 = Inst.getOperand(3);
|
|
MCOperand &Imm6 = Inst.getOperand(4);
|
|
Imm6.setExpr(HexagonMCExpr::create(MCBinaryExpr::createSub(
|
|
Imm6.getExpr(), MCConstantExpr::create(2, Context), Context), Context));
|
|
TmpInst.setOpcode(Hexagon::S2_tableidxw);
|
|
TmpInst.addOperand(Rx);
|
|
TmpInst.addOperand(_dst_);
|
|
TmpInst.addOperand(Rs);
|
|
TmpInst.addOperand(Imm4);
|
|
TmpInst.addOperand(Imm6);
|
|
Inst = TmpInst;
|
|
break;
|
|
}
|
|
|
|
case Hexagon::S2_tableidxd_goodsyntax: {
|
|
MCInst TmpInst;
|
|
MCOperand &Rx = Inst.getOperand(0);
|
|
MCOperand &_dst_ = Inst.getOperand(1);
|
|
MCOperand &Rs = Inst.getOperand(2);
|
|
MCOperand &Imm4 = Inst.getOperand(3);
|
|
MCOperand &Imm6 = Inst.getOperand(4);
|
|
Imm6.setExpr(HexagonMCExpr::create(MCBinaryExpr::createSub(
|
|
Imm6.getExpr(), MCConstantExpr::create(3, Context), Context), Context));
|
|
TmpInst.setOpcode(Hexagon::S2_tableidxd);
|
|
TmpInst.addOperand(Rx);
|
|
TmpInst.addOperand(_dst_);
|
|
TmpInst.addOperand(Rs);
|
|
TmpInst.addOperand(Imm4);
|
|
TmpInst.addOperand(Imm6);
|
|
Inst = TmpInst;
|
|
break;
|
|
}
|
|
|
|
case Hexagon::M2_mpyui:
|
|
Inst.setOpcode(Hexagon::M2_mpyi);
|
|
break;
|
|
case Hexagon::M2_mpysmi: {
|
|
MCInst TmpInst;
|
|
MCOperand &Rd = Inst.getOperand(0);
|
|
MCOperand &Rs = Inst.getOperand(1);
|
|
MCOperand &Imm = Inst.getOperand(2);
|
|
int64_t Value;
|
|
MCExpr const &Expr = *Imm.getExpr();
|
|
bool Absolute = Expr.evaluateAsAbsolute(Value);
|
|
assert(Absolute);
|
|
(void)Absolute;
|
|
if (!HexagonMCInstrInfo::mustExtend(Expr)) {
|
|
if (Value < 0 && Value > -256) {
|
|
Imm.setExpr(HexagonMCExpr::create(
|
|
MCConstantExpr::create(Value * -1, Context), Context));
|
|
TmpInst.setOpcode(Hexagon::M2_mpysin);
|
|
} else if (Value < 256 && Value >= 0)
|
|
TmpInst.setOpcode(Hexagon::M2_mpysip);
|
|
else
|
|
return Match_InvalidOperand;
|
|
} else {
|
|
if (Value >= 0)
|
|
TmpInst.setOpcode(Hexagon::M2_mpysip);
|
|
else
|
|
return Match_InvalidOperand;
|
|
}
|
|
TmpInst.addOperand(Rd);
|
|
TmpInst.addOperand(Rs);
|
|
TmpInst.addOperand(Imm);
|
|
Inst = TmpInst;
|
|
break;
|
|
}
|
|
|
|
case Hexagon::S2_asr_i_r_rnd_goodsyntax: {
|
|
MCOperand &Imm = Inst.getOperand(2);
|
|
MCInst TmpInst;
|
|
int64_t Value;
|
|
bool Absolute = Imm.getExpr()->evaluateAsAbsolute(Value);
|
|
assert(Absolute);
|
|
(void)Absolute;
|
|
if (Value == 0) { // convert to $Rd = $Rs
|
|
TmpInst.setOpcode(Hexagon::A2_tfr);
|
|
MCOperand &Rd = Inst.getOperand(0);
|
|
MCOperand &Rs = Inst.getOperand(1);
|
|
TmpInst.addOperand(Rd);
|
|
TmpInst.addOperand(Rs);
|
|
} else {
|
|
Imm.setExpr(HexagonMCExpr::create(
|
|
MCBinaryExpr::createSub(Imm.getExpr(),
|
|
MCConstantExpr::create(1, Context), Context),
|
|
Context));
|
|
TmpInst.setOpcode(Hexagon::S2_asr_i_r_rnd);
|
|
MCOperand &Rd = Inst.getOperand(0);
|
|
MCOperand &Rs = Inst.getOperand(1);
|
|
TmpInst.addOperand(Rd);
|
|
TmpInst.addOperand(Rs);
|
|
TmpInst.addOperand(Imm);
|
|
}
|
|
Inst = TmpInst;
|
|
break;
|
|
}
|
|
|
|
case Hexagon::S2_asr_i_p_rnd_goodsyntax: {
|
|
MCOperand &Rdd = Inst.getOperand(0);
|
|
MCOperand &Rss = Inst.getOperand(1);
|
|
MCOperand &Imm = Inst.getOperand(2);
|
|
int64_t Value;
|
|
bool Absolute = Imm.getExpr()->evaluateAsAbsolute(Value);
|
|
assert(Absolute);
|
|
(void)Absolute;
|
|
if (Value == 0) { // convert to $Rdd = combine ($Rs[0], $Rs[1])
|
|
MCInst TmpInst;
|
|
unsigned int RegPairNum = RI->getEncodingValue(Rss.getReg());
|
|
std::string R1 = r + utostr(RegPairNum + 1);
|
|
StringRef Reg1(R1);
|
|
Rss.setReg(matchRegister(Reg1));
|
|
// Add a new operand for the second register in the pair.
|
|
std::string R2 = r + utostr(RegPairNum);
|
|
StringRef Reg2(R2);
|
|
TmpInst.setOpcode(Hexagon::A2_combinew);
|
|
TmpInst.addOperand(Rdd);
|
|
TmpInst.addOperand(Rss);
|
|
TmpInst.addOperand(MCOperand::createReg(matchRegister(Reg2)));
|
|
Inst = TmpInst;
|
|
} else {
|
|
Imm.setExpr(HexagonMCExpr::create(
|
|
MCBinaryExpr::createSub(Imm.getExpr(),
|
|
MCConstantExpr::create(1, Context), Context),
|
|
Context));
|
|
Inst.setOpcode(Hexagon::S2_asr_i_p_rnd);
|
|
}
|
|
break;
|
|
}
|
|
|
|
case Hexagon::A4_boundscheck: {
|
|
MCOperand &Rs = Inst.getOperand(1);
|
|
unsigned int RegNum = RI->getEncodingValue(Rs.getReg());
|
|
if (RegNum & 1) { // Odd mapped to raw:hi, regpair is rodd:odd-1, like r3:2
|
|
Inst.setOpcode(Hexagon::A4_boundscheck_hi);
|
|
std::string Name = r + utostr(RegNum) + Colon + utostr(RegNum - 1);
|
|
StringRef RegPair = Name;
|
|
Rs.setReg(matchRegister(RegPair));
|
|
} else { // raw:lo
|
|
Inst.setOpcode(Hexagon::A4_boundscheck_lo);
|
|
std::string Name = r + utostr(RegNum + 1) + Colon + utostr(RegNum);
|
|
StringRef RegPair = Name;
|
|
Rs.setReg(matchRegister(RegPair));
|
|
}
|
|
break;
|
|
}
|
|
|
|
case Hexagon::A2_addsp: {
|
|
MCOperand &Rs = Inst.getOperand(1);
|
|
unsigned int RegNum = RI->getEncodingValue(Rs.getReg());
|
|
if (RegNum & 1) { // Odd mapped to raw:hi
|
|
Inst.setOpcode(Hexagon::A2_addsph);
|
|
std::string Name = r + utostr(RegNum) + Colon + utostr(RegNum - 1);
|
|
StringRef RegPair = Name;
|
|
Rs.setReg(matchRegister(RegPair));
|
|
} else { // Even mapped raw:lo
|
|
Inst.setOpcode(Hexagon::A2_addspl);
|
|
std::string Name = r + utostr(RegNum + 1) + Colon + utostr(RegNum);
|
|
StringRef RegPair = Name;
|
|
Rs.setReg(matchRegister(RegPair));
|
|
}
|
|
break;
|
|
}
|
|
|
|
case Hexagon::M2_vrcmpys_s1: {
|
|
MCOperand &Rt = Inst.getOperand(2);
|
|
unsigned int RegNum = RI->getEncodingValue(Rt.getReg());
|
|
if (RegNum & 1) { // Odd mapped to sat:raw:hi
|
|
Inst.setOpcode(Hexagon::M2_vrcmpys_s1_h);
|
|
std::string Name = r + utostr(RegNum) + Colon + utostr(RegNum - 1);
|
|
StringRef RegPair = Name;
|
|
Rt.setReg(matchRegister(RegPair));
|
|
} else { // Even mapped sat:raw:lo
|
|
Inst.setOpcode(Hexagon::M2_vrcmpys_s1_l);
|
|
std::string Name = r + utostr(RegNum + 1) + Colon + utostr(RegNum);
|
|
StringRef RegPair = Name;
|
|
Rt.setReg(matchRegister(RegPair));
|
|
}
|
|
break;
|
|
}
|
|
|
|
case Hexagon::M2_vrcmpys_acc_s1: {
|
|
MCInst TmpInst;
|
|
MCOperand &Rxx = Inst.getOperand(0);
|
|
MCOperand &Rss = Inst.getOperand(2);
|
|
MCOperand &Rt = Inst.getOperand(3);
|
|
unsigned int RegNum = RI->getEncodingValue(Rt.getReg());
|
|
if (RegNum & 1) { // Odd mapped to sat:raw:hi
|
|
TmpInst.setOpcode(Hexagon::M2_vrcmpys_acc_s1_h);
|
|
std::string Name = r + utostr(RegNum) + Colon + utostr(RegNum - 1);
|
|
StringRef RegPair = Name;
|
|
Rt.setReg(matchRegister(RegPair));
|
|
} else { // Even mapped sat:raw:lo
|
|
TmpInst.setOpcode(Hexagon::M2_vrcmpys_acc_s1_l);
|
|
std::string Name = r + utostr(RegNum + 1) + Colon + utostr(RegNum);
|
|
StringRef RegPair = Name;
|
|
Rt.setReg(matchRegister(RegPair));
|
|
}
|
|
// Registers are in different positions
|
|
TmpInst.addOperand(Rxx);
|
|
TmpInst.addOperand(Rxx);
|
|
TmpInst.addOperand(Rss);
|
|
TmpInst.addOperand(Rt);
|
|
Inst = TmpInst;
|
|
break;
|
|
}
|
|
|
|
case Hexagon::M2_vrcmpys_s1rp: {
|
|
MCOperand &Rt = Inst.getOperand(2);
|
|
unsigned int RegNum = RI->getEncodingValue(Rt.getReg());
|
|
if (RegNum & 1) { // Odd mapped to rnd:sat:raw:hi
|
|
Inst.setOpcode(Hexagon::M2_vrcmpys_s1rp_h);
|
|
std::string Name = r + utostr(RegNum) + Colon + utostr(RegNum - 1);
|
|
StringRef RegPair = Name;
|
|
Rt.setReg(matchRegister(RegPair));
|
|
} else { // Even mapped rnd:sat:raw:lo
|
|
Inst.setOpcode(Hexagon::M2_vrcmpys_s1rp_l);
|
|
std::string Name = r + utostr(RegNum + 1) + Colon + utostr(RegNum);
|
|
StringRef RegPair = Name;
|
|
Rt.setReg(matchRegister(RegPair));
|
|
}
|
|
break;
|
|
}
|
|
|
|
case Hexagon::S5_asrhub_rnd_sat_goodsyntax: {
|
|
MCOperand &Imm = Inst.getOperand(2);
|
|
int64_t Value;
|
|
bool Absolute = Imm.getExpr()->evaluateAsAbsolute(Value);
|
|
assert(Absolute);
|
|
(void)Absolute;
|
|
if (Value == 0)
|
|
Inst.setOpcode(Hexagon::S2_vsathub);
|
|
else {
|
|
Imm.setExpr(HexagonMCExpr::create(
|
|
MCBinaryExpr::createSub(Imm.getExpr(),
|
|
MCConstantExpr::create(1, Context), Context),
|
|
Context));
|
|
Inst.setOpcode(Hexagon::S5_asrhub_rnd_sat);
|
|
}
|
|
break;
|
|
}
|
|
|
|
case Hexagon::S5_vasrhrnd_goodsyntax: {
|
|
MCOperand &Rdd = Inst.getOperand(0);
|
|
MCOperand &Rss = Inst.getOperand(1);
|
|
MCOperand &Imm = Inst.getOperand(2);
|
|
int64_t Value;
|
|
bool Absolute = Imm.getExpr()->evaluateAsAbsolute(Value);
|
|
assert(Absolute);
|
|
(void)Absolute;
|
|
if (Value == 0) {
|
|
MCInst TmpInst;
|
|
unsigned int RegPairNum = RI->getEncodingValue(Rss.getReg());
|
|
std::string R1 = r + utostr(RegPairNum + 1);
|
|
StringRef Reg1(R1);
|
|
Rss.setReg(matchRegister(Reg1));
|
|
// Add a new operand for the second register in the pair.
|
|
std::string R2 = r + utostr(RegPairNum);
|
|
StringRef Reg2(R2);
|
|
TmpInst.setOpcode(Hexagon::A2_combinew);
|
|
TmpInst.addOperand(Rdd);
|
|
TmpInst.addOperand(Rss);
|
|
TmpInst.addOperand(MCOperand::createReg(matchRegister(Reg2)));
|
|
Inst = TmpInst;
|
|
} else {
|
|
Imm.setExpr(HexagonMCExpr::create(
|
|
MCBinaryExpr::createSub(Imm.getExpr(),
|
|
MCConstantExpr::create(1, Context), Context),
|
|
Context));
|
|
Inst.setOpcode(Hexagon::S5_vasrhrnd);
|
|
}
|
|
break;
|
|
}
|
|
|
|
case Hexagon::A2_not: {
|
|
MCInst TmpInst;
|
|
MCOperand &Rd = Inst.getOperand(0);
|
|
MCOperand &Rs = Inst.getOperand(1);
|
|
TmpInst.setOpcode(Hexagon::A2_subri);
|
|
TmpInst.addOperand(Rd);
|
|
TmpInst.addOperand(MCOperand::createExpr(
|
|
HexagonMCExpr::create(MCConstantExpr::create(-1, Context), Context)));
|
|
TmpInst.addOperand(Rs);
|
|
Inst = TmpInst;
|
|
break;
|
|
}
|
|
case Hexagon::PS_loadrubabs:
|
|
if (!HexagonMCInstrInfo::mustExtend(*Inst.getOperand(1).getExpr()))
|
|
Inst.setOpcode(Hexagon::L2_loadrubgp);
|
|
break;
|
|
case Hexagon::PS_loadrbabs:
|
|
if (!HexagonMCInstrInfo::mustExtend(*Inst.getOperand(1).getExpr()))
|
|
Inst.setOpcode(Hexagon::L2_loadrbgp);
|
|
break;
|
|
case Hexagon::PS_loadruhabs:
|
|
if (!HexagonMCInstrInfo::mustExtend(*Inst.getOperand(1).getExpr()))
|
|
Inst.setOpcode(Hexagon::L2_loadruhgp);
|
|
break;
|
|
case Hexagon::PS_loadrhabs:
|
|
if (!HexagonMCInstrInfo::mustExtend(*Inst.getOperand(1).getExpr()))
|
|
Inst.setOpcode(Hexagon::L2_loadrhgp);
|
|
break;
|
|
case Hexagon::PS_loadriabs:
|
|
if (!HexagonMCInstrInfo::mustExtend(*Inst.getOperand(1).getExpr()))
|
|
Inst.setOpcode(Hexagon::L2_loadrigp);
|
|
break;
|
|
case Hexagon::PS_loadrdabs:
|
|
if (!HexagonMCInstrInfo::mustExtend(*Inst.getOperand(1).getExpr()))
|
|
Inst.setOpcode(Hexagon::L2_loadrdgp);
|
|
break;
|
|
case Hexagon::PS_storerbabs:
|
|
if (!HexagonMCInstrInfo::mustExtend(*Inst.getOperand(0).getExpr()))
|
|
Inst.setOpcode(Hexagon::S2_storerbgp);
|
|
break;
|
|
case Hexagon::PS_storerhabs:
|
|
if (!HexagonMCInstrInfo::mustExtend(*Inst.getOperand(0).getExpr()))
|
|
Inst.setOpcode(Hexagon::S2_storerhgp);
|
|
break;
|
|
case Hexagon::PS_storerfabs:
|
|
if (!HexagonMCInstrInfo::mustExtend(*Inst.getOperand(0).getExpr()))
|
|
Inst.setOpcode(Hexagon::S2_storerfgp);
|
|
break;
|
|
case Hexagon::PS_storeriabs:
|
|
if (!HexagonMCInstrInfo::mustExtend(*Inst.getOperand(0).getExpr()))
|
|
Inst.setOpcode(Hexagon::S2_storerigp);
|
|
break;
|
|
case Hexagon::PS_storerdabs:
|
|
if (!HexagonMCInstrInfo::mustExtend(*Inst.getOperand(0).getExpr()))
|
|
Inst.setOpcode(Hexagon::S2_storerdgp);
|
|
break;
|
|
case Hexagon::PS_storerbnewabs:
|
|
if (!HexagonMCInstrInfo::mustExtend(*Inst.getOperand(0).getExpr()))
|
|
Inst.setOpcode(Hexagon::S2_storerbnewgp);
|
|
break;
|
|
case Hexagon::PS_storerhnewabs:
|
|
if (!HexagonMCInstrInfo::mustExtend(*Inst.getOperand(0).getExpr()))
|
|
Inst.setOpcode(Hexagon::S2_storerhnewgp);
|
|
break;
|
|
case Hexagon::PS_storerinewabs:
|
|
if (!HexagonMCInstrInfo::mustExtend(*Inst.getOperand(0).getExpr()))
|
|
Inst.setOpcode(Hexagon::S2_storerinewgp);
|
|
break;
|
|
case Hexagon::A2_zxtb: {
|
|
Inst.setOpcode(Hexagon::A2_andir);
|
|
Inst.addOperand(MCOperand::createExpr(MCConstantExpr::create(255, Context)));
|
|
break;
|
|
}
|
|
} // switch
|
|
|
|
return Match_Success;
|
|
}
|
|
|
|
unsigned HexagonAsmParser::matchRegister(StringRef Name) {
|
|
if (unsigned Reg = MatchRegisterName(Name))
|
|
return Reg;
|
|
return MatchRegisterAltName(Name);
|
|
}
|