MIPS: [turbofan] Add matching rule to use Nor instruction.

src/compiler/mips/code-generator-mips.cc

Index: src/compiler/mips/code-generator-mips.cc
diff --git a/src/compiler/mips/code-generator-mips.cc b/src/compiler/mips/code-generator-mips.cc
index 2b7ff10a5ca306de7bc988301c70e387dbe52858..7c5c774d02f54de5c59f840e1ce3c95194534f7b 100644
--- a/src/compiler/mips/code-generator-mips.cc
+++ b/src/compiler/mips/code-generator-mips.cc
@@ -633,6 +633,9 @@ void CodeGenerator::AssembleArchInstruction(Instruction* instr) {
     case kMipsOr:
       __ Or(i.OutputRegister(), i.InputRegister(0), i.InputOperand(1));
       break;
+    case kMipsNor:
+      __ Nor(i.OutputRegister(), i.InputRegister(0), i.InputOperand(1));
+      break;
     case kMipsXor:
       __ Xor(i.OutputRegister(), i.InputRegister(0), i.InputOperand(1));
       break;