Support %_IsUndetectableObject in crankshaft.

src/ia32/lithium-ia32.h

Index: src/ia32/lithium-ia32.h
diff --git a/src/ia32/lithium-ia32.h b/src/ia32/lithium-ia32.h
index 8a93bda4e2a6743147a5efcb320b66d92dcb4f85..4ee91434c7f0f8f66ab0f9429c53d3f8a759f967 100644
--- a/src/ia32/lithium-ia32.h
+++ b/src/ia32/lithium-ia32.h
@@ -102,14 +102,16 @@ class LCodeGen;
   V(InstructionGap)                             \
   V(Integer32ToDouble)                          \
   V(InvokeFunction)                             \
+  V(IsConstructCall)                            \
+  V(IsConstructCallAndBranch)                   \
   V(IsNull)                                     \
   V(IsNullAndBranch)                            \
   V(IsObject)                                   \
   V(IsObjectAndBranch)                          \
   V(IsSmi)                                      \
   V(IsSmiAndBranch)                             \
-  V(IsConstructCall)                            \
-  V(IsConstructCallAndBranch)                   \
+  V(IsUndetectable)                             \
+  V(IsUndetectableAndBranch)                    \
   V(JSArrayLength)                              \
   V(Label)                                      \
   V(LazyBailout)                                \
@@ -743,6 +745,31 @@ class LIsSmiAndBranch: public LControlInstruction<1, 0> {
 };
 
 
+class LIsUndetectable: public LTemplateInstruction<1, 1, 0> {
+ public:
+  explicit LIsUndetectable(LOperand* value) {
+    inputs_[0] = value;
+  }
+
+  DECLARE_CONCRETE_INSTRUCTION(IsUndetectable, "is-undetectable")
+  DECLARE_HYDROGEN_ACCESSOR(IsUndetectable)
+};
+
+
+class LIsUndetectableAndBranch: public LControlInstruction<1, 1> {
+ public:
+  explicit LIsUndetectableAndBranch(LOperand* value, LOperand* temp) {
+    inputs_[0] = value;
+    temps_[0] = temp;
+  }
+
+  DECLARE_CONCRETE_INSTRUCTION(IsUndetectableAndBranch,
+                               "is-undetectable-and-branch")
+
+  virtual void PrintDataTo(StringStream* stream);
+};
+
+
 class LHasInstanceType: public LTemplateInstruction<1, 1, 0> {
  public:
   explicit LHasInstanceType(LOperand* value) {