}
+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,
return true;
}
break;
- case kArrayPop: {
- if (!expr->IsMonomorphic() || expr->check_type() != RECEIVER_MAP_CHECK) {
- return false;
- }
- if (receiver_map->instance_type() != JS_ARRAY_TYPE) return false;
- ElementsKind elements_kind = receiver_map->elements_kind();
- if (!IsFastElementsKind(elements_kind)) return false;
- AddCheckConstantFunction(expr->holder(), receiver, receiver_map);
-
- Drop(expr->arguments()->length());
- HValue* result;
- HValue* checked_object;
- HValue* reduced_length;
- HValue* receiver = Pop();
- { NoObservableSideEffectsScope scope(this);
- checked_object = AddCheckMap(receiver, receiver_map);
- HValue* elements = AddLoadElements(checked_object);
- // Ensure that we aren't popping from a copy-on-write array.
- if (IsFastSmiOrObjectElementsKind(elements_kind)) {
- Add<HCheckMaps>(
- elements, isolate()->factory()->fixed_array_map(), top_info());
- }
- HValue* length = Add<HLoadNamedField>(
- checked_object, HObjectAccess::ForArrayLength(elements_kind));
- reduced_length = AddUncasted<HSub>(length, graph()->GetConstant1());
- HValue* bounds_check = Add<HBoundsCheck>(
- graph()->GetConstant0(), length);
- result = AddElementAccess(elements, reduced_length, NULL,
- bounds_check, elements_kind, false);
- Factory* factory = isolate()->factory();
- double nan_double = FixedDoubleArray::hole_nan_as_double();
- HValue* hole = IsFastSmiOrObjectElementsKind(elements_kind)
- ? Add<HConstant>(factory->the_hole_value())
- : Add<HConstant>(nan_double);
- if (IsFastSmiOrObjectElementsKind(elements_kind)) {
- elements_kind = FAST_HOLEY_ELEMENTS;
- }
- AddElementAccess(
- elements, reduced_length, hole, bounds_check, elements_kind, true);
- }
- Add<HStoreNamedField>(
- checked_object, HObjectAccess::ForArrayLength(elements_kind),
- reduced_length);
- Add<HSimulate>(expr->id(), REMOVABLE_SIMULATE);
- ast_context()->ReturnValue(result);
- return true;
- }
default:
// Not yet supported for inlining.
break;
}
+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,
}
+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 = a0;
+ Register scratch = a1;
+ Register elements = a3;
+ HandlerFrontendHeader(object, holder, name, RECEIVER_MAP_CHECK, &miss);
+
+ // Get the elements array of the object.
+ __ lw(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 t0 and calculate new length.
+ __ lw(t0, FieldMemOperand(receiver, JSArray::kLengthOffset));
+ __ Subu(t0, t0, Operand(Smi::FromInt(1)));
+ __ Branch(&return_undefined, lt, t0, Operand(zero_reg));
+
+ // Get the last element.
+ __ LoadRoot(t2, Heap::kTheHoleValueRootIndex);
+ STATIC_ASSERT(kSmiTagSize == 1);
+ STATIC_ASSERT(kSmiTag == 0);
+ // We can't address the last element in one operation. Compute the more
+ // expensive shift first, and use an offset later on.
+ __ sll(t1, t0, kPointerSizeLog2 - kSmiTagSize);
+ __ Addu(elements, elements, t1);
+ __ lw(scratch, FieldMemOperand(elements, FixedArray::kHeaderSize));
+ __ Branch(&call_builtin, eq, scratch, Operand(t2));
+
+ // Set the array's length.
+ __ sw(t0, FieldMemOperand(receiver, JSArray::kLengthOffset));
+
+ // Fill with the hole.
+ __ sw(t2, FieldMemOperand(elements, FixedArray::kHeaderSize));
+ const int argc = arguments().immediate();
+ __ mov(v0, scratch);
+ __ DropAndRet(argc + 1);
+
+ __ bind(&return_undefined);
+ __ LoadRoot(v0, Heap::kUndefinedValueRootIndex);
+ __ DropAndRet(argc + 1);
+
+ __ 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,
// Subset of FUNCTIONS_WITH_ID_LIST with custom constant/global call
// IC stubs.
#define CUSTOM_CALL_IC_GENERATORS(V) \
- V(ArrayPush)
+ V(ArrayPush) \
+ V(ArrayPop)
class CallStubCompiler: public StubCompiler {
}
+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.
+ __ movp(rbx, FieldOperand(rdx, JSArray::kElementsOffset));
+
+ // Check that the elements are in fast mode and writable.
+ __ CompareRoot(FieldOperand(rbx, HeapObject::kMapOffset),
+ Heap::kFixedArrayMapRootIndex);
+ __ j(not_equal, &call_builtin);
+
+ // Get the array's length into rcx and calculate new length.
+ __ SmiToInteger32(rcx, FieldOperand(rdx, JSArray::kLengthOffset));
+ __ subl(rcx, Immediate(1));
+ __ j(negative, &return_undefined);
+
+ // Get the last element.
+ __ LoadRoot(r9, Heap::kTheHoleValueRootIndex);
+ __ movp(rax, FieldOperand(rbx,
+ rcx, times_pointer_size,
+ FixedArray::kHeaderSize));
+ // Check if element is already the hole.
+ __ cmpq(rax, r9);
+ // If so, call slow-case to also check prototypes for value.
+ __ j(equal, &call_builtin);
+
+ // Set the array's length.
+ __ Integer32ToSmiField(FieldOperand(rdx, JSArray::kLengthOffset), rcx);
+
+ // Fill with the hole and return original value.
+ __ movp(FieldOperand(rbx,
+ rcx, times_pointer_size,
+ FixedArray::kHeaderSize),
+ r9);
+ const int argc = arguments().immediate();
+ __ ret((argc + 1) * kPointerSize);
+
+ __ bind(&return_undefined);
+ __ LoadRoot(rax, Heap::kUndefinedValueRootIndex);
+ __ 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,
projects / platform / upstream / v8.git / commitdiff