1 //===- HexagonMCInst.h - Hexagon sub-class of MCInst ----------------------===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 // This class extends MCInst to allow some VLIW annotations.
12 //===----------------------------------------------------------------------===//
14 #ifndef LLVM_LIB_TARGET_HEXAGON_MCTARGETDESC_HEXAGONMCINST_H
15 #define LLVM_LIB_TARGET_HEXAGON_MCTARGETDESC_HEXAGONMCINST_H
17 #include "HexagonTargetMachine.h"
18 #include "llvm/MC/MCInst.h"
22 extern "C" void LLVMInitializeHexagonTargetMC();
26 class HexagonMCInst : public MCInst {
27 friend void ::LLVMInitializeHexagonTargetMC();
28 // Used to access TSFlags
29 static std::unique_ptr <MCInstrInfo const> MCII;
32 explicit HexagonMCInst();
33 HexagonMCInst(const MCInstrDesc &mcid);
35 static void AppendImplicitOperands(MCInst &MCI);
36 static std::bitset<16> GetImplicitBits(MCInst const &MCI);
37 static void SetImplicitBits(MCInst &MCI, std::bitset<16> Bits);
38 static void SanityCheckImplicitOperands(MCInst const &MCI) {
39 assert(MCI.getNumOperands() >= 2 && "At least the two implicit operands");
40 assert(MCI.getOperand(MCI.getNumOperands() - 1).isInst() &&
41 "Implicit bits and flags");
42 assert(MCI.getOperand(MCI.getNumOperands() - 2).isImm() &&
46 void setPacketBegin(bool Y);
47 bool isPacketBegin() const;
48 static const size_t packetBeginIndex = 0;
49 void setPacketEnd(bool Y);
50 bool isPacketEnd() const;
51 static const size_t packetEndIndex = 1;
54 // Return the slots used by the insn.
55 unsigned getUnits(const HexagonTargetMachine *TM) const;
57 // Return the Hexagon ISA class for the insn.
58 unsigned getType() const;
60 MCInstrDesc const &getDesc() const;
62 // Return whether the insn is an actual insn.
65 // Return whether the insn is a prefix.
66 bool isPrefix() const;
68 // Return whether the insn is solo, i.e., cannot be in a packet.
71 // Return whether the instruction needs to be constant extended.
72 bool isConstExtended() const;
74 // Return constant extended operand number.
75 unsigned short getCExtOpNum(void) const;
77 // Return whether the insn is a new-value consumer.
78 bool isNewValue() const;
80 // Return whether the instruction is a legal new-value producer.
81 bool hasNewValue() const;
83 // Return the operand that consumes or produces a new value.
84 const MCOperand &getNewValue() const;
86 // Return number of bits in the constant extended operand.
87 unsigned getBitCount(void) const;
90 // Return whether the instruction must be always extended.
91 bool isExtended() const;
93 // Return true if the insn may be extended based on the operand value.
94 bool isExtendable() const;
96 // Return true if the operand can be constant extended.
97 bool isOperandExtended(const unsigned short OperandNum) const;
99 // Return the min value that a constant extendable operand can have
100 // without being extended.
101 int getMinValue() const;
103 // Return the max value that a constant extendable operand can have
104 // without being extended.
105 int getMaxValue() const;