Reland ArrayPop / ArrayPush.

src/ia32/stub-cache-ia32.cc

Index: src/ia32/stub-cache-ia32.cc
diff --git a/src/ia32/stub-cache-ia32.cc b/src/ia32/stub-cache-ia32.cc
index 92b2f9356cb6da87b2d613cb2d596ebe5c6aa468..e76bfb5f3bf87569557897cad25d486e29818070 100644
--- a/src/ia32/stub-cache-ia32.cc
+++ b/src/ia32/stub-cache-ia32.cc
@@ -1616,76 +1616,6 @@ Handle<Code> CallStubCompiler::CompileCallField(Handle<JSObject> object,
 }
 
 
-Handle<Code> CallStubCompiler::CompileArrayPopCall(
-    Handle<Object> object,
-    Handle<JSObject> holder,
-    Handle<Cell> cell,
-    Handle<JSFunction> function,
-    Handle<String> name,
-    Code::StubType type) {
-  // If object is not an array or is observed or sealed, bail out to regular
-  // call.
-  if (!object->IsJSArray() ||
-      !cell.is_null() ||
-      Handle<JSArray>::cast(object)->map()->is_observed() ||
-      !Handle<JSArray>::cast(object)->map()->is_extensible()) {
-    return Handle<Code>::null();
-  }
-
-  Label miss, return_undefined, call_builtin;
-
-  HandlerFrontendHeader(object, holder, name, RECEIVER_MAP_CHECK, &miss);
-
-  // Get the elements array of the object.
-  __ mov(ebx, FieldOperand(edx, JSArray::kElementsOffset));
-
-  // Check that the elements are in fast mode and writable.
-  __ cmp(FieldOperand(ebx, HeapObject::kMapOffset),
-         Immediate(factory()->fixed_array_map()));
-  __ j(not_equal, &call_builtin);
-
-  // Get the array's length into ecx and calculate new length.
-  __ mov(ecx, FieldOperand(edx, JSArray::kLengthOffset));
-  __ sub(ecx, Immediate(Smi::FromInt(1)));
-  __ j(negative, &return_undefined);
-
-  // Get the last element.
-  STATIC_ASSERT(kSmiTagSize == 1);
-  STATIC_ASSERT(kSmiTag == 0);
-  __ mov(eax, FieldOperand(ebx,
-                           ecx, times_half_pointer_size,
-                           FixedArray::kHeaderSize));
-  __ cmp(eax, Immediate(factory()->the_hole_value()));
-  __ j(equal, &call_builtin);
-
-  // Set the array's length.
-  __ mov(FieldOperand(edx, JSArray::kLengthOffset), ecx);
-
-  // Fill with the hole.
-  __ mov(FieldOperand(ebx,
-                      ecx, times_half_pointer_size,
-                      FixedArray::kHeaderSize),
-         Immediate(factory()->the_hole_value()));
-  const int argc = arguments().immediate();
-  __ ret((argc + 1) * kPointerSize);
-
-  __ bind(&return_undefined);
-  __ mov(eax, Immediate(factory()->undefined_value()));
-  __ ret((argc + 1) * kPointerSize);
-
-  __ bind(&call_builtin);
-  __ TailCallExternalReference(
-      ExternalReference(Builtins::c_ArrayPop, isolate()),
-      argc + 1,
-      1);
-
-  HandlerFrontendFooter(&miss);
-
-  // Return the generated code.
-  return GetCode(type, name);
-}
-
-
 Handle<Code> CallStubCompiler::CompileFastApiCall(
     const CallOptimization& optimization,
     Handle<Object> object,