Implement the fpowi now by lowering to a libcall

llvm-svn: 30225

3 files changed, 16 insertions, 1 deletions

diff --git a/llvm/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp b/llvm/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
index c32da68454a..3545b246894 100644
--- a/llvm/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
+++ b/llvm/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
@@ -2581,7 +2581,14 @@ SDOperand SelectionDAGLegalize::LegalizeOp(SDOperand Op) {
       break;
     }
     break;
-    
+  case ISD::FPOWI: {
+    // We always lower FPOWI into a libcall.  No target support it yet.
+    const char *FnName = Node->getValueType(0) == MVT::f32
+                            ? "__powisf2" : "__powidf2";
+    SDOperand Dummy;
+    Result = ExpandLibCall(FnName, Node, Dummy);
+    break;
+  }
   case ISD::BIT_CONVERT:
     if (!isTypeLegal(Node->getOperand(0).getValueType())) {
       Result = ExpandBIT_CONVERT(Node->getValueType(0), Node->getOperand(0));
diff --git a/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp b/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
index 4fa168fccde..044a2fa976f 100644
--- a/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
+++ b/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
@@ -2404,6 +2404,7 @@ const char *SDNode::getOperationName(const SelectionDAG *G) const {
   case ISD::FSQRT:  return "fsqrt";
   case ISD::FSIN:   return "fsin";
   case ISD::FCOS:   return "fcos";
+  case ISD::FPOWI:  return "fpowi";
 
   // Binary operators
   case ISD::ADD:    return "add";
diff --git a/llvm/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp b/llvm/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp
index f1cdcdfa979..578f8d2f3da 100644
--- a/llvm/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp
+++ b/llvm/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp
@@ -1620,6 +1620,13 @@ SelectionDAGLowering::visitIntrinsicCall(CallInst &I, unsigned Intrinsic) {
                              getValue(I.getOperand(1)).getValueType(),
                              getValue(I.getOperand(1))));
     return 0;
+  case Intrinsic::powi_f32:
+  case Intrinsic::powi_f64:
+    setValue(&I, DAG.getNode(ISD::FPOWI,
+                             getValue(I.getOperand(1)).getValueType(),
+                             getValue(I.getOperand(1)),
+                             getValue(I.getOperand(2))));
+    return 0;
   case Intrinsic::pcmarker: {
     SDOperand Tmp = getValue(I.getOperand(1));
     DAG.setRoot(DAG.getNode(ISD::PCMARKER, MVT::Other, getRoot(), Tmp));