//
// The LLVM Compiler Infrastructure
//
-// This file was developed by the LLVM research group and is distributed under
-// the University of Illinois Open Source License. See LICENSE.TXT for details.
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
class Record;
class DagInit;
- struct CodeGenInstruction {
+ class CodeGenInstruction {
+ public:
Record *TheDef; // The actual record defining this instruction.
- std::string Name; // Contents of the 'Name' field.
std::string Namespace; // The namespace the instruction is in.
/// AsmString - The format string used to emit a .s file for the
/// instruction.
std::string AsmString;
-
+
/// OperandInfo - The information we keep track of for each operand in the
/// operand list for a tablegen instruction.
struct OperandInfo {
unsigned MIOperandNo;
unsigned MINumOperands; // The number of operands.
+ /// DoNotEncode - Bools are set to true in this vector for each operand in
+ /// the DisableEncoding list. These should not be emitted by the code
+ /// emitter.
+ std::vector<bool> DoNotEncode;
+
/// MIOperandInfo - Default MI operand type. Note an operand may be made
/// up of multiple MI operands.
DagInit *MIOperandInfo;
+
+ /// Constraint info for this operand. This operand can have pieces, so we
+ /// track constraint info for each.
+ std::vector<std::string> Constraints;
OperandInfo(Record *R, const std::string &N, const std::string &PMN,
unsigned MION, unsigned MINO, DagInit *MIOI)
MINumOperands(MINO), MIOperandInfo(MIOI) {}
};
+ /// NumDefs - Number of def operands declared.
+ ///
+ unsigned NumDefs;
+
/// OperandList - The list of declared operands, along with their declared
/// type (which is a record).
std::vector<OperandInfo> OperandList;
// Various boolean values we track for the instruction.
bool isReturn;
bool isBranch;
+ bool isIndirectBranch;
bool isBarrier;
bool isCall;
- bool isLoad;
- bool isStore;
- bool isTwoAddress;
+ bool canFoldAsLoad;
+ bool mayLoad, mayStore;
+ bool isPredicable;
bool isConvertibleToThreeAddress;
bool isCommutable;
bool isTerminator;
+ bool isReMaterializable;
bool hasDelaySlot;
bool usesCustomDAGSchedInserter;
- bool hasVariableNumberOfOperands;
+ bool isVariadic;
+ bool hasCtrlDep;
+ bool isNotDuplicable;
+ bool hasOptionalDef;
+ bool hasSideEffects;
+ bool mayHaveSideEffects;
+ bool neverHasSideEffects;
+ bool isAsCheapAsAMove;
+
+ /// ParseOperandName - Parse an operand name like "$foo" or "$foo.bar",
+ /// where $foo is a whole operand and $foo.bar refers to a suboperand.
+ /// This throws an exception if the name is invalid. If AllowWholeOp is
+ /// true, references to operands with suboperands are allowed, otherwise
+ /// not.
+ std::pair<unsigned,unsigned> ParseOperandName(const std::string &Op,
+ bool AllowWholeOp = true);
+
+ /// getFlattenedOperandNumber - Flatten a operand/suboperand pair into a
+ /// flat machineinstr operand #.
+ unsigned getFlattenedOperandNumber(std::pair<unsigned,unsigned> Op) const {
+ return OperandList[Op.first].MIOperandNo + Op.second;
+ }
+
+ /// getSubOperandNumber - Unflatten a operand number into an
+ /// operand/suboperand pair.
+ std::pair<unsigned,unsigned> getSubOperandNumber(unsigned Op) const {
+ for (unsigned i = 0; ; ++i) {
+ assert(i < OperandList.size() && "Invalid flat operand #");
+ if (OperandList[i].MIOperandNo+OperandList[i].MINumOperands > Op)
+ return std::make_pair(i, Op-OperandList[i].MIOperandNo);
+ }
+ }
+
+
+ /// isFlatOperandNotEmitted - Return true if the specified flat operand #
+ /// should not be emitted with the code emitter.
+ bool isFlatOperandNotEmitted(unsigned FlatOpNo) const {
+ std::pair<unsigned,unsigned> Op = getSubOperandNumber(FlatOpNo);
+ if (OperandList[Op.first].DoNotEncode.size() > Op.second)
+ return OperandList[Op.first].DoNotEncode[Op.second];
+ return false;
+ }
CodeGenInstruction(Record *R, const std::string &AsmStr);