1 files changed, 4 insertions, 0 deletions
diff --git a/llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp b/llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
index f22ca4b55c3..664cc3b9900 100644
--- a/llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
+++ b/llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
@@ -7345,6 +7345,10 @@ static void GetRegistersForValue(SelectionDAG &DAG, const SDLoc &DL,
   SmallVector<unsigned, 4> Regs;
   const TargetRegisterInfo &TRI = *MF.getSubtarget().getRegisterInfo();
 
+  // No work to do for memory operations.
+  if (OpInfo.ConstraintType == TargetLowering::C_Memory)
+    return;
+
   // If this is a constraint for a single physreg, or a constraint for a
   // register class, find it.
   unsigned AssignedReg;