diff options
| -rw-r--r-- | utils/TableGen/FastISelEmitter.cpp | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/utils/TableGen/FastISelEmitter.cpp b/utils/TableGen/FastISelEmitter.cpp index c45a8b5..420e1ee 100644 --- a/utils/TableGen/FastISelEmitter.cpp +++ b/utils/TableGen/FastISelEmitter.cpp @@ -163,6 +163,9 @@ void FastISelEmitter::run(std::ostream &OS) { CodeGenInstruction &II = CGP.getTargetInfo().getInstruction(Op->getName()); if (II.OperandList.empty()) continue; + + // For now, ignore instructions where the first operand is not an + // output register. Record *Op0Rec = II.OperandList[0].Rec; if (!Op0Rec->isSubClassOf("RegisterClass")) continue; @@ -191,7 +194,7 @@ void FastISelEmitter::run(std::ostream &OS) { if (!InstPatNode->getPredicateFn().empty()) continue; - // Check all the operands. For now only accept register operands. + // Check all the operands. OperandsSignature Operands; for (unsigned i = 0, e = InstPatNode->getNumChildren(); i != e; ++i) { TreePatternNode *Op = InstPatNode->getChild(i); @@ -204,11 +207,15 @@ void FastISelEmitter::run(std::ostream &OS) { if (!OpDI) goto continue_label; Record *OpLeafRec = OpDI->getDef(); + // For now, only accept register operands. if (!OpLeafRec->isSubClassOf("RegisterClass")) goto continue_label; + // For now, require the register operands' register classes to all + // be the same. const CodeGenRegisterClass *RC = &Target.getRegisterClass(OpLeafRec); if (!RC) goto continue_label; + // For now, all the operands must have the same type. if (Op->getTypeNum(0) != VT) goto continue_label; Operands.Operands.push_back("r"); |