Support for legalizing MEMBARRIER.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47667 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 13 insertions, 0 deletions

diff --git a/lib/CodeGen/SelectionDAG/LegalizeTypesPromote.cpp b/lib/CodeGen/SelectionDAG/LegalizeTypesPromote.cpp
index 2ff1693e89..41501398f2 100644
--- a/lib/CodeGen/SelectionDAG/LegalizeTypesPromote.cpp
+++ b/lib/CodeGen/SelectionDAG/LegalizeTypesPromote.cpp
@@ -359,6 +359,8 @@ bool DAGTypeLegalizer::PromoteOperand(SDNode *N, unsigned OpNo) {
   case ISD::BUILD_VECTOR: Res = PromoteOperand_BUILD_VECTOR(N); break;
 
   case ISD::RET:         Res = PromoteOperand_RET(N, OpNo); break;
+
+  case ISD::MEMBARRIER:  Res = PromoteOperand_MEMBARRIER(N); break;
   }
 
   // If the result is null, the sub-method took care of registering results etc.
@@ -612,3 +614,14 @@ SDOperand DAGTypeLegalizer::PromoteOperand_RET(SDNode *N, unsigned OpNo) {
   return DAG.UpdateNodeOperands(SDOperand (N, 0),
                                 &NewValues[0], NewValues.size());
 }
+
+SDOperand DAGTypeLegalizer::PromoteOperand_MEMBARRIER(SDNode *N) {
+  SDOperand NewOps[6];
+  NewOps[0] = N->getOperand(0);
+  for (unsigned i = 1; i < array_lengthof(NewOps); ++i) {
+    SDOperand Flag = GetPromotedOp(N->getOperand(i));
+    NewOps[i] = DAG.getZeroExtendInReg(Flag, MVT::i1);
+  }
+  return DAG.UpdateNodeOperands(SDOperand (N, 0), NewOps,
+                                array_lengthof(NewOps));
+}