Teach DAGISelEmitter about zero_reg.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37900 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/utils/TableGen/DAGISelEmitter.cpp b/utils/TableGen/DAGISelEmitter.cpp
index 17114b0..ca3d37a 100644
--- a/utils/TableGen/DAGISelEmitter.cpp
+++ b/utils/TableGen/DAGISelEmitter.cpp
@@ -622,7 +622,8 @@
} else if (R->getName() == "ptr_rc") {
Other[0] = MVT::iPTR;
return Other;
- } else if (R->getName() == "node" || R->getName() == "srcvalue") {
+ } else if (R->getName() == "node" || R->getName() == "srcvalue" ||
+ R->getName() == "zero_reg") {
// Placeholder.
return Unknown;
}
@@ -2711,6 +2712,12 @@
getEnumName(N->getTypeNum(0)) + ");");
NodeOps.push_back("Tmp" + utostr(ResNo));
return NodeOps;
+ } else if (DI->getDef()->getName() == "zero_reg") {
+ emitCode("SDOperand Tmp" + utostr(ResNo) +
+ " = CurDAG->getRegister(0, " +
+ getEnumName(N->getTypeNum(0)) + ");");
+ NodeOps.push_back("Tmp" + utostr(ResNo));
+ return NodeOps;
}
} else if (IntInit *II = dynamic_cast<IntInit*>(N->getLeafValue())) {
unsigned ResNo = TmpNo++;