#include <vector>
using namespace llvm;
-// FIXME: Somewhat hackish to use a command line option for this. There should
-// be a CodeEmitter class in the Target.td that controls this sort of thing
-// instead.
-static cl::opt<bool>
-MCEmitter("mc-emitter",
- cl::desc("Generate CodeEmitter for use with the MC library."),
- cl::init(false));
-
namespace {
class CodeEmitterGen {
void run(raw_ostream &o);
private:
- void emitMachineOpEmitter(raw_ostream &o, const std::string &Namespace);
- void emitGetValueBit(raw_ostream &o, const std::string &Namespace);
int getVariableBit(const std::string &VarName, BitsInit *BI, int bit);
std::string getInstructionCase(Record *R, CodeGenTarget &Target);
void AddCodeToMergeInOperand(Record *R, BitsInit *BI,
const std::string &VarName,
unsigned &NumberedOp,
+ std::set<unsigned> &NamedOpIndices,
std::string &Case, CodeGenTarget &Target);
};
void CodeEmitterGen::
AddCodeToMergeInOperand(Record *R, BitsInit *BI, const std::string &VarName,
unsigned &NumberedOp,
+ std::set<unsigned> &NamedOpIndices,
std::string &Case, CodeGenTarget &Target) {
CodeGenInstruction &CGI = Target.getInstruction(R);
/// If this operand is not supposed to be emitted by the
/// generated emitter, skip it.
while (NumberedOp < NumberOps &&
- CGI.Operands.isFlatOperandNotEmitted(NumberedOp))
+ (CGI.Operands.isFlatOperandNotEmitted(NumberedOp) ||
+ (NamedOpIndices.size() && NamedOpIndices.count(
+ CGI.Operands.getSubOperandNumber(NumberedOp).first)))) {
++NumberedOp;
+ if (NumberedOp >= CGI.Operands.back().MIOperandNo +
+ CGI.Operands.back().MINumOperands) {
+ errs() << "Too few operands in record " << R->getName() <<
+ " (no match for variable " << VarName << "):\n";
+ errs() << *R;
+ errs() << '\n';
+
+ return;
+ }
+ }
+
OpIdx = NumberedOp++;
}
if (SO.second == 0) {
Case += " // op: " + VarName + "\n" +
" op = " + EncoderMethodName + "(MI, " + utostr(OpIdx);
- if (MCEmitter)
- Case += ", Fixups";
+ Case += ", Fixups, STI";
Case += ");\n";
}
} else {
Case += " // op: " + VarName + "\n" +
" op = getMachineOpValue(MI, MI.getOperand(" + utostr(OpIdx) + ")";
- if (MCEmitter)
- Case += ", Fixups";
+ Case += ", Fixups, STI";
Case += ");\n";
}
const std::vector<RecordVal> &Vals = R->getValues();
unsigned NumberedOp = 0;
+ std::set<unsigned> NamedOpIndices;
+ // Collect the set of operand indices that might correspond to named
+ // operand, and skip these when assigning operands based on position.
+ if (Target.getInstructionSet()->
+ getValueAsBit("noNamedPositionallyEncodedOperands")) {
+ CodeGenInstruction &CGI = Target.getInstruction(R);
+ for (unsigned i = 0, e = Vals.size(); i != e; ++i) {
+ unsigned OpIdx;
+ if (!CGI.Operands.hasOperandNamed(Vals[i].getName(), OpIdx))
+ continue;
+
+ NamedOpIndices.insert(OpIdx);
+ }
+ }
+
// Loop over all of the fields in the instruction, determining which are the
// operands to the instruction.
for (unsigned i = 0, e = Vals.size(); i != e; ++i) {
if (Vals[i].getPrefix() || Vals[i].getValue()->isComplete())
continue;
- AddCodeToMergeInOperand(R, BI, Vals[i].getName(), NumberedOp, Case, Target);
+ AddCodeToMergeInOperand(R, BI, Vals[i].getName(), NumberedOp,
+ NamedOpIndices, Case, Target);
}
std::string PostEmitter = R->getValueAsString("PostEncoderMethod");
- if (!PostEmitter.empty())
- Case += " Value = " + PostEmitter + "(MI, Value);\n";
+ if (!PostEmitter.empty()) {
+ Case += " Value = " + PostEmitter + "(MI, Value";
+ Case += ", STI";
+ Case += ");\n";
+ }
return Case;
}
// Emit function declaration
o << "uint64_t " << Target.getName();
- if (MCEmitter)
- o << "MCCodeEmitter::getBinaryCodeForInstr(const MCInst &MI,\n"
- << " SmallVectorImpl<MCFixup> &Fixups) const {\n";
- else
- o << "CodeEmitter::getBinaryCodeForInstr(const MachineInstr &MI) const {\n";
+ o << "MCCodeEmitter::getBinaryCodeForInstr(const MCInst &MI,\n"
+ << " SmallVectorImpl<MCFixup> &Fixups,\n"
+ << " const MCSubtargetInfo &STI) const {\n";
// Emit instruction base values
o << " static const uint64_t InstBits[] = {\n";