[COFF, ARM64] Implement Intrinsic.sponentry for AArch64

Summary: This patch adds Intrinsic.sponentry. This intrinsic is required to correctly support setjmp for AArch64 Windows platform.

Reviewers: mgrang, TomTan, rnk, compnerd, mstorsjo, efriedma

Reviewed By: efriedma

Subscribers: majnemer, chrib, javed.absar, kristof.beyls, llvm-commits

Differential Revision: https://reviews.llvm.org/D53673

llvm-svn: 345791

3 files changed, 6 insertions, 0 deletions

diff --git a/llvm/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp b/llvm/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
index a96b8628ac8..d5fb7a0697d 100644
--- a/llvm/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
+++ b/llvm/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
@@ -1059,6 +1059,7 @@ void SelectionDAGLegalize::LegalizeOp(SDNode *Node) {
   case ISD::FRAMEADDR:
   case ISD::RETURNADDR:
   case ISD::ADDROFRETURNADDR:
+  case ISD::SPONENTRY:
     // These operations lie about being legal: when they claim to be legal,
     // they should actually be custom-lowered.
     Action = TLI.getOperationAction(Node->getOpcode(), Node->getValueType(0));
diff --git a/llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp b/llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
index dac99eddec3..cb650c6fc13 100644
--- a/llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
+++ b/llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
@@ -5050,6 +5050,10 @@ SelectionDAGBuilder::visitIntrinsicCall(const CallInst &I, unsigned Intrinsic) {
     setValue(&I, DAG.getNode(ISD::ADDROFRETURNADDR, sdl,
                              TLI.getPointerTy(DAG.getDataLayout())));
     return nullptr;
+  case Intrinsic::sponentry:
+    setValue(&I, DAG.getNode(ISD::SPONENTRY, sdl,
+                             TLI.getPointerTy(DAG.getDataLayout())));
+    return nullptr;
   case Intrinsic::frameaddress:
     setValue(&I, DAG.getNode(ISD::FRAMEADDR, sdl,
                              TLI.getPointerTy(DAG.getDataLayout()),
diff --git a/llvm/lib/CodeGen/SelectionDAG/SelectionDAGDumper.cpp b/llvm/lib/CodeGen/SelectionDAG/SelectionDAGDumper.cpp
index 5c17a5d295d..c21f2d3b717 100644
--- a/llvm/lib/CodeGen/SelectionDAG/SelectionDAGDumper.cpp
+++ b/llvm/lib/CodeGen/SelectionDAG/SelectionDAGDumper.cpp
@@ -124,6 +124,7 @@ std::string SDNode::getOperationName(const SelectionDAG *G) const {
   case ISD::RETURNADDR:                 return "RETURNADDR";
   case ISD::ADDROFRETURNADDR:           return "ADDROFRETURNADDR";
   case ISD::FRAMEADDR:                  return "FRAMEADDR";
+  case ISD::SPONENTRY:                  return "SPONENTRY";
   case ISD::LOCAL_RECOVER:              return "LOCAL_RECOVER";
   case ISD::READ_REGISTER:              return "READ_REGISTER";
   case ISD::WRITE_REGISTER:             return "WRITE_REGISTER";