Index: lib/Target/ARM/ARMISelDAGToDAG.cpp
===================================================================
--- lib/Target/ARM/ARMISelDAGToDAG.cpp
+++ lib/Target/ARM/ARMISelDAGToDAG.cpp
@@ -3350,8 +3350,15 @@
       Ops.push_back(getI32Imm(cast<ConstantSDNode>(N->getOperand(2))->getZExtValue(), dl)); /* coproc */
       Ops.push_back(getI32Imm(cast<ConstantSDNode>(N->getOperand(3))->getZExtValue(), dl)); /* opc */
       Ops.push_back(getI32Imm(cast<ConstantSDNode>(N->getOperand(4))->getZExtValue(), dl)); /* CRm */
-      Ops.push_back(getAL(CurDAG, dl));
-      Ops.push_back(CurDAG->getRegister(0, MVT::i32));
+
+      // The mrrc2 instruction in ARM doesn't allow predicates, the top 4 bits of the encoded
+      // instruction will always be '1111' but it is possible in assembly language to specify
+      // AL as a predicate to mrrc2 but it doesn't make any difference to the encoded instruction.
+      if (Opc != ARM::MRRC2) {
+        Ops.push_back(getAL(CurDAG, dl));
+        Ops.push_back(CurDAG->getRegister(0, MVT::i32));
+      }
+
       Ops.push_back(Chain);
 
       // Writes to two registers.