From 795d7d63810619af504ca1330aaa967c6e1c976d Mon Sep 17 00:00:00 2001
From: Albert Gutowski <agutowski@google.com>
Date: Wed, 12 Oct 2016 22:13:19 +0000
Subject: Create llvm.addressofreturnaddress intrinsic

Summary: We need a new LLVM intrinsic to implement MS _AddressOfReturnAddress builtin on 64-bit Windows.

Reviewers: majnemer, rnk

Subscribers: llvm-commits

Differential Revision: https://reviews.llvm.org/D25293

llvm-svn: 284061
---
 llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp | 4 ++++
 1 file changed, 4 insertions(+)

(limited to 'llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp')

diff --git a/llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp b/llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
index 2aaab4b0d87..1f4dfc4ca40 100644
--- a/llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
+++ b/llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
@@ -4770,6 +4770,10 @@ SelectionDAGBuilder::visitIntrinsicCall(const CallInst &I, unsigned Intrinsic) {
                              TLI.getPointerTy(DAG.getDataLayout()),
                              getValue(I.getArgOperand(0))));
     return nullptr;
+  case Intrinsic::addressofreturnaddress:
+    setValue(&I, DAG.getNode(ISD::ADDROFRETURNADDR, sdl,
+                             TLI.getPointerTy(DAG.getDataLayout())));
+    return nullptr;
   case Intrinsic::frameaddress:
     setValue(&I, DAG.getNode(ISD::FRAMEADDR, sdl,
                              TLI.getPointerTy(DAG.getDataLayout()),
-- 
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