MIPS: Convert UnaryOpStub to a HydrogenCodeStub.

src/mips/lithium-mips.h

Index: src/mips/lithium-mips.h
diff --git a/src/mips/lithium-mips.h b/src/mips/lithium-mips.h
index 06d30d03de758e131d5e4e55d6eb599b7a5f294f..7ae2dd380b5d76ebe51571324f312e7bbb08e93d 100644
--- a/src/mips/lithium-mips.h
+++ b/src/mips/lithium-mips.h
@@ -118,6 +118,7 @@ class LCodeGen;
   V(IsConstructCallAndBranch)                   \
   V(IsObjectAndBranch)                          \
   V(IsStringAndBranch)                          \
+  V(IsNumberAndBranch)                          \
   V(IsSmiAndBranch)                             \
   V(IsUndetectableAndBranch)                    \
   V(Label)                                      \
@@ -919,6 +920,19 @@ class LIsObjectAndBranch: public LControlInstruction<1, 1> {
 };
 
 
+class LIsNumberAndBranch: public LControlInstruction<1, 0> {
+ public:
+  explicit LIsNumberAndBranch(LOperand* value) {
+    inputs_[0] = value;
+  }
+
+  LOperand* value() { return inputs_[0]; }
+
+  DECLARE_CONCRETE_INSTRUCTION(IsNumberAndBranch, "is-number-and-branch")
+  DECLARE_HYDROGEN_ACCESSOR(IsNumberAndBranch)
+};
+
+
 class LIsStringAndBranch: public LControlInstruction<1, 1> {
  public:
   LIsStringAndBranch(LOperand* value, LOperand* temp) {