continued readcyclecounter support
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@24300 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/IntrinsicLowering.cpp b/lib/CodeGen/IntrinsicLowering.cpp
index a570ef5..256f0ff 100644
--- a/lib/CodeGen/IntrinsicLowering.cpp
+++ b/lib/CodeGen/IntrinsicLowering.cpp
@@ -262,6 +262,12 @@
case Intrinsic::pcmarker:
break; // Simply strip out pcmarker on unsupported architectures
+ case Intrinsic::readcyclecounter: {
+ std::cerr << "WARNING: this target does not support the llvm.readcyclecounter"
+ << " intrinsic. It is being lowered to a constant 0\n";
+ CI->replaceAllUsesWith(ConstantUInt::get(Type::ULongTy, 0));
+ break;
+ }
case Intrinsic::dbg_stoppoint:
case Intrinsic::dbg_region_start:
diff --git a/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp b/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
index 56ab18c..03813d0 100644
--- a/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
+++ b/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
@@ -1122,6 +1122,11 @@
if (Tmp1 != Node->getOperand(0))
Result = DAG.getNode(ISD::PCMARKER, MVT::Other, Tmp1,Node->getOperand(1));
break;
+ case ISD::READCYCLECOUNTER:
+ Tmp1 = LegalizeOp(Node->getOperand(0)); // Legalize the chain
+ if (Tmp1 != Node->getOperand(0))
+ Result = DAG.getNode(ISD::READCYCLECOUNTER, MVT::i64, Tmp1);
+ break;
case ISD::TRUNCSTORE:
Tmp1 = LegalizeOp(Node->getOperand(0)); // Legalize the chain.
Tmp3 = LegalizeOp(Node->getOperand(2)); // Legalize the pointer.
diff --git a/lib/CodeGen/SelectionDAG/SelectionDAG.cpp b/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
index 3c0baf0..7b8046e 100644
--- a/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
+++ b/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
@@ -1624,6 +1624,7 @@
}
case ISD::PCMARKER: return "PCMarker";
+ case ISD::READCYCLECOUNTER: return "ReadCycleCounter";
case ISD::SRCVALUE: return "SrcValue";
case ISD::VALUETYPE: return "ValueType";
case ISD::EntryToken: return "EntryToken";
diff --git a/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp b/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp
index e954f15..ae61e20 100644
--- a/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp
+++ b/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp
@@ -804,6 +804,9 @@
DAG.setRoot(DAG.getNode(ISD::PCMARKER, MVT::Other, getRoot(), Tmp));
return 0;
}
+ case Intrinsic::readcyclecounter:
+ setValue(&I, DAG.getNode(ISD::READCYCLECOUNTER, MVT::i64, getRoot()));
+ return 0;
case Intrinsic::cttz:
setValue(&I, DAG.getNode(ISD::CTTZ,
getValue(I.getOperand(1)).getValueType(),