Turn Function.prototype.bind into a hydrogen stub optimized for the common case

src/code-stubs.h

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef V8_CODE_STUBS_H_
 #define V8_CODE_STUBS_H_
 
 #include "src/allocation.h"
 #include "src/assembler.h"
 #include "src/code-stub-assembler.h"
@@ skipping 47 matching lines @@
   /* HydrogenCodeStubs */                   \
   V(ArrayNArgumentsConstructor)             \
   V(BinaryOpIC)                             \
   V(BinaryOpWithAllocationSite)             \
   V(CreateAllocationSite)                   \
   V(CreateWeakCell)                         \
   V(ElementsTransitionAndStore)             \
   V(FastArrayPush)                          \
   V(FastCloneRegExp)                        \
   V(FastCloneShallowArray)                  \
+  V(FastFunctionBind)                       \
   V(FastNewClosure)                         \
   V(FastNewContext)                         \
   V(FastNewObject)                          \
   V(FastNewRestParameter)                   \
   V(FastNewSloppyArguments)                 \
   V(FastNewStrictArguments)                 \
   V(GrowArrayElements)                      \
   V(InternalArrayNArgumentsConstructor)     \
   V(KeyedLoadGeneric)                       \
   V(LoadGlobalViaContext)                   \
@@ skipping 1183 matching lines @@
 
   DEFINE_CALL_INTERFACE_DESCRIPTOR(GrowArrayElements);
   DEFINE_HYDROGEN_CODE_STUB(GrowArrayElements, HydrogenCodeStub);
 };
 
 class FastArrayPushStub : public HydrogenCodeStub {
  public:
   explicit FastArrayPushStub(Isolate* isolate) : HydrogenCodeStub(isolate) {}
 
  private:
-  DEFINE_CALL_INTERFACE_DESCRIPTOR(FastArrayPush);
+  DEFINE_CALL_INTERFACE_DESCRIPTOR(VarArgFunction);
   DEFINE_HYDROGEN_CODE_STUB(FastArrayPush, HydrogenCodeStub);
 };
 
+class FastFunctionBindStub : public HydrogenCodeStub {
+ public:
+  explicit FastFunctionBindStub(Isolate* isolate) : HydrogenCodeStub(isolate) {}
+
+ private:
+  DEFINE_CALL_INTERFACE_DESCRIPTOR(VarArgFunction);
+  DEFINE_HYDROGEN_CODE_STUB(FastFunctionBind, HydrogenCodeStub);
+};
 
 enum AllocationSiteOverrideMode {
   DONT_OVERRIDE,
   DISABLE_ALLOCATION_SITES,
   LAST_ALLOCATION_SITE_OVERRIDE_MODE = DISABLE_ALLOCATION_SITES
 };
 
 
 class ArrayConstructorStub: public PlatformCodeStub {
  public:
@@ skipping 2006 matching lines @@
 #undef DEFINE_HYDROGEN_CODE_STUB
 #undef DEFINE_CODE_STUB
 #undef DEFINE_CODE_STUB_BASE
 
 extern Representation RepresentationFromType(Type* type);
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_CODE_STUBS_H_