Add addrspacecast instruction.

Patch by Michele Scandale!

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@194760 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/SelectionDAG/SelectionDAGDumper.cpp b/lib/CodeGen/SelectionDAG/SelectionDAGDumper.cpp
index 47bab32..c04a08d 100644
--- a/lib/CodeGen/SelectionDAG/SelectionDAGDumper.cpp
+++ b/lib/CodeGen/SelectionDAG/SelectionDAGDumper.cpp
@@ -224,6 +224,7 @@
   case ISD::FP_TO_SINT:                 return "fp_to_sint";
   case ISD::FP_TO_UINT:                 return "fp_to_uint";
   case ISD::BITCAST:                    return "bitcast";
+  case ISD::ADDRSPACECAST:              return "addrspacecast";
   case ISD::FP16_TO_FP32:               return "fp16_to_fp32";
   case ISD::FP32_TO_FP16:               return "fp32_to_fp16";
 
@@ -485,6 +486,13 @@
       OS << " " << offset;
     if (unsigned int TF = BA->getTargetFlags())
       OS << " [TF=" << TF << ']';
+  } else if (const AddrSpaceCastSDNode *ASC =
+               dyn_cast<AddrSpaceCastSDNode>(this)) {
+    OS << '['
+       << ASC->getSrcAddressSpace()
+       << " -> "
+       << ASC->getDestAddressSpace()
+       << ']';
   }
 
   if (unsigned Order = getIROrder())