AllocationProfiler: Inital version of RecordObjectAllocation for hydrogen.

src/hydrogen-instructions.h

Index: src/hydrogen-instructions.h
diff --git a/src/hydrogen-instructions.h b/src/hydrogen-instructions.h
index 7df1aae544f6311163976d6d47807ed7b204b776..37f4896de679cf98744db2888ecc454332034bee 100644
--- a/src/hydrogen-instructions.h
+++ b/src/hydrogen-instructions.h
@@ -87,6 +87,7 @@ class LChunkBuilder;
   V(CallNewArray)                              \
   V(CallRuntime)                               \
   V(CallStub)                                  \
+  V(CallExternal)                              \
   V(CapturedObject)                            \
   V(Change)                                    \
   V(CheckHeapObject)                           \
@@ -5163,6 +5164,32 @@ class HCallStub V8_FINAL : public HUnaryCall {
 };
 
 
+class HCallExternal V8_FINAL : public HCall<0> {
+ public:
+  DECLARE_INSTRUCTION_FACTORY_P2(HCallExternal, ExternalReference, int);
+
+  virtual Representation RequiredInputRepresentation(
+      int index) V8_FINAL V8_OVERRIDE {
+    return Representation::Tagged();
+  }
+
+  const ExternalReference& external_reference() const {
+    return external_reference_;
+  }
+  virtual void PrintDataTo(StringStream* stream) V8_OVERRIDE;
+
+  DECLARE_CONCRETE_INSTRUCTION(CallExternal)
+
+ private:
+  HCallExternal(ExternalReference external_reference, int argc)
+    : HCall<0>(argc),
+      external_reference_(external_reference) {
+  }
+
+  const ExternalReference external_reference_;
+};
+
+
 class HUnknownOSRValue V8_FINAL : public HTemplateInstruction<0> {
  public:
   DECLARE_INSTRUCTION_FACTORY_P2(HUnknownOSRValue, HEnvironment*, int);