Remove hand-written assembly ArrayPush stubs

src/ia32/code-stubs-ia32.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 3726 matching lines @@
   __ push(ecx);
   GenerateCompareFlatAsciiStrings(masm, edx, eax, ecx, ebx, edi);
 
   // Call the runtime; it returns -1 (less), 0 (equal), or 1 (greater)
   // tagged as a small integer.
   __ bind(&runtime);
   __ TailCallRuntime(Runtime::kHiddenStringCompare, 2, 1);
 }
 
 
-void ArrayPushStub::Generate(MacroAssembler* masm) {
-  int argc = arguments_count();
-
-  if (argc == 0) {
-    // Noop, return the length.
-    __ mov(eax, FieldOperand(edx, JSArray::kLengthOffset));
-    __ ret((argc + 1) * kPointerSize);
-    return;
-  }
-
-  Isolate* isolate = masm->isolate();
-
-  if (argc != 1) {
-    __ TailCallExternalReference(
-        ExternalReference(Builtins::c_ArrayPush, isolate), argc + 1, 1);
-    return;
-  }
-
-  Label call_builtin, attempt_to_grow_elements, with_write_barrier;
-
-  // Get the elements array of the object.
-  __ mov(edi, FieldOperand(edx, JSArray::kElementsOffset));
-
-  if (IsFastSmiOrObjectElementsKind(elements_kind())) {
-    // Check that the elements are in fast mode and writable.
-    __ cmp(FieldOperand(edi, HeapObject::kMapOffset),
-           isolate->factory()->fixed_array_map());
-    __ j(not_equal, &call_builtin);
-  }
-
-  // Get the array's length into eax and calculate new length.
-  __ mov(eax, FieldOperand(edx, JSArray::kLengthOffset));
-  STATIC_ASSERT(kSmiTagSize == 1);
-  STATIC_ASSERT(kSmiTag == 0);
-  __ add(eax, Immediate(Smi::FromInt(argc)));
-
-  // Get the elements' length into ecx.
-  __ mov(ecx, FieldOperand(edi, FixedArray::kLengthOffset));
-
-  // Check if we could survive without allocation.
-  __ cmp(eax, ecx);
-
-  if (IsFastSmiOrObjectElementsKind(elements_kind())) {
-    __ j(greater, &attempt_to_grow_elements);
-
-    // Check if value is a smi.
-    __ mov(ecx, Operand(esp, argc * kPointerSize));
-    __ JumpIfNotSmi(ecx, &with_write_barrier);
-
-    // Store the value.
-    __ mov(FieldOperand(edi, eax, times_half_pointer_size,
-                        FixedArray::kHeaderSize - argc * kPointerSize),
-           ecx);
-  } else {
-    __ j(greater, &call_builtin);
-
-    __ mov(ecx, Operand(esp, argc * kPointerSize));
-    __ StoreNumberToDoubleElements(
-        ecx, edi, eax, ecx, xmm0, &call_builtin, true, argc * kDoubleSize);
-  }
-
-  // Save new length.
-  __ mov(FieldOperand(edx, JSArray::kLengthOffset), eax);
-  __ ret((argc + 1) * kPointerSize);
-
-  if (IsFastDoubleElementsKind(elements_kind())) {
-    __ bind(&call_builtin);
-    __ TailCallExternalReference(
-        ExternalReference(Builtins::c_ArrayPush, isolate), argc + 1, 1);
-    return;
-  }
-
-  __ bind(&with_write_barrier);
-
-  if (IsFastSmiElementsKind(elements_kind())) {
-    if (FLAG_trace_elements_transitions) __ jmp(&call_builtin);
-
-    __ cmp(FieldOperand(ecx, HeapObject::kMapOffset),
-           isolate->factory()->heap_number_map());
-    __ j(equal, &call_builtin);
-
-    ElementsKind target_kind = IsHoleyElementsKind(elements_kind())
-        ? FAST_HOLEY_ELEMENTS : FAST_ELEMENTS;
-    __ mov(ebx, ContextOperand(esi, Context::GLOBAL_OBJECT_INDEX));
-    __ mov(ebx, FieldOperand(ebx, GlobalObject::kNativeContextOffset));
-    __ mov(ebx, ContextOperand(ebx, Context::JS_ARRAY_MAPS_INDEX));
-    const int header_size = FixedArrayBase::kHeaderSize;
-    // Verify that the object can be transitioned in place.
-    const int origin_offset = header_size + elements_kind() * kPointerSize;
-    __ mov(edi, FieldOperand(ebx, origin_offset));
-    __ cmp(edi, FieldOperand(edx, HeapObject::kMapOffset));
-    __ j(not_equal, &call_builtin);
-
-    const int target_offset = header_size + target_kind * kPointerSize;
-    __ mov(ebx, FieldOperand(ebx, target_offset));
-    ElementsTransitionGenerator::GenerateMapChangeElementsTransition(
-        masm, DONT_TRACK_ALLOCATION_SITE, NULL);
-    // Restore edi used as a scratch register for the write barrier used while
-    // setting the map.
-    __ mov(edi, FieldOperand(edx, JSArray::kElementsOffset));
-  }
-
-  // Save new length.
-  __ mov(FieldOperand(edx, JSArray::kLengthOffset), eax);
-
-  // Store the value.
-  __ lea(edx, FieldOperand(edi, eax, times_half_pointer_size,
-                           FixedArray::kHeaderSize - argc * kPointerSize));
-  __ mov(Operand(edx, 0), ecx);
-
-  __ RecordWrite(edi, edx, ecx, kDontSaveFPRegs, EMIT_REMEMBERED_SET,
-                 OMIT_SMI_CHECK);
-
-  __ ret((argc + 1) * kPointerSize);
-
-  __ bind(&attempt_to_grow_elements);
-  if (!FLAG_inline_new) {
-    __ bind(&call_builtin);
-    __ TailCallExternalReference(
-        ExternalReference(Builtins::c_ArrayPush, isolate), argc + 1, 1);
-    return;
-  }
-
-  __ mov(ebx, Operand(esp, argc * kPointerSize));
-  // Growing elements that are SMI-only requires special handling in case the
-  // new element is non-Smi. For now, delegate to the builtin.
-  if (IsFastSmiElementsKind(elements_kind())) {
-    __ JumpIfNotSmi(ebx, &call_builtin);
-  }
-
-  // We could be lucky and the elements array could be at the top of new-space.
-  // In this case we can just grow it in place by moving the allocation pointer
-  // up.
-  ExternalReference new_space_allocation_top =
-      ExternalReference::new_space_allocation_top_address(isolate);
-  ExternalReference new_space_allocation_limit =
-      ExternalReference::new_space_allocation_limit_address(isolate);
-
-  const int kAllocationDelta = 4;
-  ASSERT(kAllocationDelta >= argc);
-  // Load top.
-  __ mov(ecx, Operand::StaticVariable(new_space_allocation_top));
-
-  // Check if it's the end of elements.
-  __ lea(edx, FieldOperand(edi, eax, times_half_pointer_size,
-                           FixedArray::kHeaderSize - argc * kPointerSize));
-  __ cmp(edx, ecx);
-  __ j(not_equal, &call_builtin);
-  __ add(ecx, Immediate(kAllocationDelta * kPointerSize));
-  __ cmp(ecx, Operand::StaticVariable(new_space_allocation_limit));
-  __ j(above, &call_builtin);
-
-  // We fit and could grow elements.
-  __ mov(Operand::StaticVariable(new_space_allocation_top), ecx);
-
-  // Push the argument...
-  __ mov(Operand(edx, 0), ebx);
-  // ... and fill the rest with holes.
-  for (int i = 1; i < kAllocationDelta; i++) {
-    __ mov(Operand(edx, i * kPointerSize),
-           isolate->factory()->the_hole_value());
-  }
-
-  if (IsFastObjectElementsKind(elements_kind())) {
-    // We know the elements array is in new space so we don't need the
-    // remembered set, but we just pushed a value onto it so we may have to tell
-    // the incremental marker to rescan the object that we just grew.  We don't
-    // need to worry about the holes because they are in old space and already
-    // marked black.
-    __ RecordWrite(edi, edx, ebx, kDontSaveFPRegs, OMIT_REMEMBERED_SET);
-  }
-
-  // Restore receiver to edx as finish sequence assumes it's here.
-  __ mov(edx, Operand(esp, (argc + 1) * kPointerSize));
-
-  // Increment element's and array's sizes.
-  __ add(FieldOperand(edi, FixedArray::kLengthOffset),
-         Immediate(Smi::FromInt(kAllocationDelta)));
-
-  // NOTE: This only happen in new-space, where we don't care about the
-  // black-byte-count on pages. Otherwise we should update that too if the
-  // object is black.
-
-  __ mov(FieldOperand(edx, JSArray::kLengthOffset), eax);
-  __ ret((argc + 1) * kPointerSize);
-
-  __ bind(&call_builtin);
-  __ TailCallExternalReference(
-      ExternalReference(Builtins::c_ArrayPush, isolate), argc + 1, 1);
-}
-
-
 void BinaryOpICWithAllocationSiteStub::Generate(MacroAssembler* masm) {
   // ----------- S t a t e -------------
   //  -- edx    : left
   //  -- eax    : right
   //  -- esp[0] : return address
   // -----------------------------------
   Isolate* isolate = masm->isolate();
 
   // Load ecx with the allocation site.  We stick an undefined dummy value here
   // and replace it with the real allocation site later when we instantiate this
@@ skipping 1413 matching lines @@
                               Operand(ebp, 7 * kPointerSize),
                               NULL);
 }
 
 
 #undef __
 
 } }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_IA32