Support %_IsConstructCall in Crankshaft pipeline.

src/hydrogen-instructions.h

Index: src/hydrogen-instructions.h
diff --git a/src/hydrogen-instructions.h b/src/hydrogen-instructions.h
index f1093a004c6c340131307d8fe18ed6baf868cef1..fdad77afd86522292374cd465f39413f9cf05809 100644
--- a/src/hydrogen-instructions.h
+++ b/src/hydrogen-instructions.h
@@ -113,6 +113,7 @@ class LChunkBuilder;
   V(IsNull)                                    \
   V(IsObject)                                  \
   V(IsSmi)                                     \
+  V(IsConstructCall)                           \
   V(HasInstanceType)                           \
   V(HasCachedArrayIndex)                       \
   V(JSArrayLength)                             \
@@ -2179,6 +2180,21 @@ class HIsSmi: public HUnaryPredicate {
 };
 
 
+class HIsConstructCall: public HInstruction {
+ public:
+  HIsConstructCall() {
+    set_representation(Representation::Tagged());
+    SetFlag(kUseGVN);
+  }
+
+  virtual bool EmitAtUses() const { return uses()->length() <= 1; }
+
+  DECLARE_CONCRETE_INSTRUCTION(IsConstructCall, "is_construct_call")
+ protected:

[Mads Ager (chromium), 2011/02/08 07:09:44]

Blank line before protected?

+  virtual bool DataEquals(HValue* other) const { return true; }
+};
+
+
 class HHasInstanceType: public HUnaryPredicate {
  public:
   HHasInstanceType(HValue* value, InstanceType type)