diff --git a/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp b/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
--- a/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
+++ b/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
@@ -7952,7 +7952,7 @@
   assert((Opcode == ISD::INTRINSIC_VOID ||
           Opcode == ISD::INTRINSIC_W_CHAIN ||
           Opcode == ISD::PREFETCH ||
-          ((int)Opcode <= std::numeric_limits<int>::max() &&
+          (Opcode <= (unsigned)std::numeric_limits<int>::max() &&
            (int)Opcode >= ISD::FIRST_TARGET_MEMORY_OPCODE)) &&
          "Opcode is not a memory-accessing opcode!");