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

src/compiler/mips64/code-generator-mips64.cc

Index: src/compiler/mips64/code-generator-mips64.cc
diff --git a/src/compiler/mips64/code-generator-mips64.cc b/src/compiler/mips64/code-generator-mips64.cc
index b67302ef90794cea1bed78571c4b720502c78b31..eb762255896d2c7cbb51b5081cb5af9ecbf704ad 100644
--- a/src/compiler/mips64/code-generator-mips64.cc
+++ b/src/compiler/mips64/code-generator-mips64.cc
@@ -654,6 +654,9 @@ void CodeGenerator::AssembleArchInstruction(Instruction* instr) {
     case kMips64Or:
       __ Or(i.OutputRegister(), i.InputRegister(0), i.InputOperand(1));
       break;
+    case kMips64Nor:
+      __ Nor(i.OutputRegister(), i.InputRegister(0), i.InputOperand(1));
+      break;
     case kMips64Xor:
       __ Xor(i.OutputRegister(), i.InputRegister(0), i.InputOperand(1));
       break;