PCMarker support for DAG and Alpha

llvm-svn: 20965

3 files changed, 11 insertions, 0 deletions

diff --git a/llvm/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp b/llvm/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
index 576232540e9..5f8a21aca0f 100644
--- a/llvm/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
+++ b/llvm/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
@@ -552,6 +552,10 @@ SDOperand SelectionDAGLegalize::LegalizeOp(SDOperand Op) {
       break;
     }
     break;
+  case ISD::PCMARKER:
+    Tmp1 = LegalizeOp(Node->getOperand(0));  // Legalize the chain.
+    Result = DAG.getNode(ISD::PCMARKER, MVT::Other, Tmp1, Node->getOperand(1));
+    break;
   case ISD::TRUNCSTORE:
     Tmp1 = LegalizeOp(Node->getOperand(0));  // Legalize the chain.
     Tmp3 = LegalizeOp(Node->getOperand(2));  // Legalize the pointer.
diff --git a/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp b/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
index d4804d98227..edc5b8c6f5e 100644
--- a/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
+++ b/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
@@ -1099,6 +1099,7 @@ bool SDNode::hasNUsesOfValue(unsigned NUses, unsigned Value) {
 const char *SDNode::getOperationName() const {
   switch (getOpcode()) {
   default: return "<<Unknown>>";
+  case ISD::PCMARKER:      return "PCMarker";
   case ISD::EntryToken:    return "EntryToken";
   case ISD::TokenFactor:   return "TokenFactor";
   case ISD::Constant:      return "Constant";
diff --git a/llvm/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp b/llvm/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp
index 9871cb32c16..75352982034 100644
--- a/llvm/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp
+++ b/llvm/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp
@@ -662,6 +662,12 @@ void SelectionDAGLowering::visitCall(CallInst &I) {
       setValue(&I, DAG.getSetCC(ISD::SETUO, MVT::i1, getValue(I.getOperand(1)),
                                 getValue(I.getOperand(2))));
       return;
+    case Intrinsic::pcmarker: {
+      SDOperand Num = getValue(I.getOperand(1));
+      DAG.setRoot(DAG.getNode(ISD::PCMARKER, MVT::Other, getRoot(), Num));
+      return;
+    }
+
     }
   
   SDOperand Callee;