Reland (and fix) "Add hydrogen support for ArrayPop, and remove the handwritten call stubs."

src/arm/stub-cache-arm.cc

Index: src/arm/stub-cache-arm.cc
diff --git a/src/arm/stub-cache-arm.cc b/src/arm/stub-cache-arm.cc
index e7c573368db02af025ea88d9b286f2f1d6a395af..8625ed6f35c33c51f191b57567ccae2fa83c2597 100644
--- a/src/arm/stub-cache-arm.cc
+++ b/src/arm/stub-cache-arm.cc
@@ -1571,79 +1571,6 @@ 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;
-  Register receiver = r0;
-  Register scratch = r1;
-  Register elements = r3;
-
-  HandlerFrontendHeader(object, holder, name, RECEIVER_MAP_CHECK, &miss);
-
-  // Get the elements array of the object.
-  __ ldr(elements, FieldMemOperand(receiver, JSArray::kElementsOffset));
-
-  // Check that the elements are in fast mode and writable.
-  __ CheckMap(elements,
-              scratch,
-              Heap::kFixedArrayMapRootIndex,
-              &call_builtin,
-              DONT_DO_SMI_CHECK);
-
-  // Get the array's length into r4 and calculate new length.
-  __ ldr(r4, FieldMemOperand(receiver, JSArray::kLengthOffset));
-  __ sub(r4, r4, Operand(Smi::FromInt(1)), SetCC);
-  __ b(lt, &return_undefined);
-
-  // Get the last element.
-  __ LoadRoot(r6, Heap::kTheHoleValueRootIndex);
-  // We can't address the last element in one operation. Compute the more
-  // expensive shift first, and use an offset later on.
-  __ add(elements, elements, Operand::PointerOffsetFromSmiKey(r4));
-  __ ldr(scratch, FieldMemOperand(elements, FixedArray::kHeaderSize));
-  __ cmp(scratch, r6);
-  __ b(eq, &call_builtin);
-
-  // Set the array's length.
-  __ str(r4, FieldMemOperand(receiver, JSArray::kLengthOffset));
-
-  // Fill with the hole.
-  __ str(r6, FieldMemOperand(elements, FixedArray::kHeaderSize));
-  const int argc = arguments().immediate();
-  __ Drop(argc + 1);
-  __ mov(r0, scratch);
-  __ Ret();
-
-  __ bind(&return_undefined);
-  __ LoadRoot(r0, Heap::kUndefinedValueRootIndex);
-  __ Drop(argc + 1);
-  __ Ret();
-
-  __ 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,