Add addrspacecast instruction.

Patch by Michele Scandale!

llvm-svn: 194760

1 files changed, 15 insertions, 0 deletions

diff --git a/llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp b/llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
index e80b63021f1..009c590cad4 100644
--- a/llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
+++ b/llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
@@ -2938,6 +2938,21 @@ void SelectionDAGBuilder::visitBitCast(const User &I) {
     setValue(&I, N);            // noop cast.
 }
 
+void SelectionDAGBuilder::visitAddrSpaceCast(const User &I) {
+  const TargetLowering &TLI = DAG.getTargetLoweringInfo();
+  const Value *SV = I.getOperand(0);
+  SDValue N = getValue(SV);
+  EVT DestVT = TM.getTargetLowering()->getValueType(I.getType());
+
+  unsigned SrcAS = SV->getType()->getPointerAddressSpace();
+  unsigned DestAS = I.getType()->getPointerAddressSpace();
+
+  if (!TLI.isNoopAddrSpaceCast(SrcAS, DestAS))
+    N = DAG.getAddrSpaceCast(getCurSDLoc(), DestVT, N, SrcAS, DestAS);
+
+  setValue(&I, N);
+}
+
 void SelectionDAGBuilder::visitInsertElement(const User &I) {
   const TargetLowering &TLI = DAG.getTargetLoweringInfo();
   SDValue InVec = getValue(I.getOperand(0));