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Let a target specify whether it wants an assembly printer to be the MC version

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or not. TableGen needs to generate the printInstruction() function as taking
an MCInstr* or a MachineInstr*, depending. Default to the old non-MC
version so that everything not yet using MC continues to just work without
fidding.

llvm-svn: 115126
This commit is contained in:
Jim Grosbach 2010-09-30 01:29:54 +00:00
parent 5e3655cd74
commit 046ae5dbac
2 changed files with 9 additions and 1 deletions
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5
include/llvm/Target/Target.td
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@ -565,6 +565,11 @@ class AsmWriter {
// OperandSpacing - Space between operand columns.
int OperandSpacing = -1;
// isMCAsmWriter - Is this assembly writer for an MC emitter? This controls
// generation of the printInstruction() method. For MC printers, it takes
// an MCInstr* operand, otherwise it takes a MachineInstr*.
bit isMCAsmWriter = 0;
}
def DefaultAsmWriter : AsmWriter;

5
utils/TableGen/AsmWriterEmitter.cpp
View File

@ -243,12 +243,15 @@ void AsmWriterEmitter::EmitPrintInstruction(raw_ostream &O) {
CodeGenTarget Target;
Record *AsmWriter = Target.getAsmWriter();
std::string ClassName = AsmWriter->getValueAsString("AsmWriterClassName");
bool isMC = AsmWriter->getValueAsBit("isMCAsmWriter");
const char *MachineInstrClassName = isMC ? "MCInst" : "MachineInstr";
O <<
"/// printInstruction - This method is automatically generated by tablegen\n"
"/// from the instruction set description.\n"
"void " << Target.getName() << ClassName
<< "::printInstruction(const MachineInstr *MI, raw_ostream &O) {\n";
<< "::printInstruction(const " << MachineInstrClassName
<< " *MI, raw_ostream &O) {\n";
std::vector<AsmWriterInst> Instructions;