Support %_IsConstructCall in Crankshaft pipeline.

src/x64/lithium-x64.h

Index: src/x64/lithium-x64.h
diff --git a/src/x64/lithium-x64.h b/src/x64/lithium-x64.h
index 64d141e33536c28d09d617b002645bd585ca4764..72027b27271c1a34d3240a0598742deb8779caea 100644
--- a/src/x64/lithium-x64.h
+++ b/src/x64/lithium-x64.h
@@ -259,6 +259,8 @@ class LCodeGen;
   V(Typeof)                                     \
   V(TypeofIs)                                   \
   V(TypeofIsAndBranch)                          \
+  V(IsConstructCall)                            \
+  V(IsConstructCallAndBranch)                   \
   V(UnaryMathOperation)                         \
   V(UnknownOSRValue)                            \
   V(ValueOf)
@@ -1763,6 +1765,24 @@ class LTypeofIsAndBranch: public LControlInstruction<1, 0> {
 };
 
 
+class LIsConstructCall: public LTemplateInstruction<1, 0, 0> {
+ public:
+  DECLARE_CONCRETE_INSTRUCTION(IsConstructCall, "is-construct-call")
+  DECLARE_HYDROGEN_ACCESSOR(IsConstructCall)
+};
+
+
+class LIsConstructCallAndBranch: public LControlInstruction<0, 1> {
+ public:
+  explicit LIsConstructCallAndBranch(LOperand* temp) {
+    temps_[0] = temp;
+  }
+
+  DECLARE_CONCRETE_INSTRUCTION(IsConstructCallAndBranch,
+                               "is-construct-call-and-branch")
+};
+
+
 class LDeleteProperty: public LTemplateInstruction<1, 2, 0> {
  public:
   LDeleteProperty(LOperand* obj, LOperand* key) {