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Unified Diff: src/arm64/full-codegen-arm64.cc

Issue 1168513004: [es6] Super call in arrows and eval (Closed) Base URL: https://chromium.googlesource.com/v8/v8.git@master
Patch Set: Push this_function earlier Created 5 years, 7 months ago
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Index: src/arm64/full-codegen-arm64.cc
diff --git a/src/arm64/full-codegen-arm64.cc b/src/arm64/full-codegen-arm64.cc
index 0e6391f8eb3f53439915cd53a89fe6dd3ed2cd1c..577db9c066e576ea4420741728ff6584e0b8e1d2 100644
--- a/src/arm64/full-codegen-arm64.cc
+++ b/src/arm64/full-codegen-arm64.cc
@@ -248,6 +248,24 @@ void FullCodeGenerator::Generate() {
__ Push(x1);
}
+ // Possibly set up a local binding to the this function which is used in
+ // derived constructors with super calls.
+ Variable* this_function_var = scope()->this_function_var();
+ if (this_function_var != nullptr) {
+ Comment cmnt(masm_, "[ This function");
+ SetVar(this_function_var, x1, x0, x2);
+ }
+
+ Variable* new_target_var = scope()->new_target_var();
+ if (new_target_var != nullptr) {
+ Comment cmnt(masm_, "[ new.target");
+ // new.target is parameter -2.
+ int offset =
+ 2 * kXRegSize + (info_->scope()->num_parameters() + 1) * kPointerSize;
+ __ Ldr(x0, MemOperand(fp, offset));
+ SetVar(new_target_var, x0, x2, x3);
+ }
+
ArgumentsAccessStub::HasNewTarget has_new_target =
IsSubclassConstructor(info->function()->kind())
? ArgumentsAccessStub::HAS_NEW_TARGET
@@ -1970,9 +1988,10 @@ void FullCodeGenerator::VisitAssignment(Assignment* expr) {
}
break;
case NAMED_SUPER_PROPERTY:
- VisitForStackValue(property->obj()->AsSuperReference()->this_var());
+ VisitForStackValue(
+ property->obj()->AsSuperPropertyReference()->this_var());
VisitForAccumulatorValue(
- property->obj()->AsSuperReference()->home_object_var());
+ property->obj()->AsSuperPropertyReference()->home_object_var());
__ Push(result_register());
if (expr->is_compound()) {
const Register scratch = x10;
@@ -1981,9 +2000,10 @@ void FullCodeGenerator::VisitAssignment(Assignment* expr) {
}
break;
case KEYED_SUPER_PROPERTY:
- VisitForStackValue(property->obj()->AsSuperReference()->this_var());
VisitForStackValue(
- property->obj()->AsSuperReference()->home_object_var());
+ property->obj()->AsSuperPropertyReference()->this_var());
+ VisitForStackValue(
+ property->obj()->AsSuperPropertyReference()->home_object_var());
VisitForAccumulatorValue(property->key());
__ Push(result_register());
if (expr->is_compound()) {
@@ -2340,9 +2360,9 @@ void FullCodeGenerator::EmitAssignment(Expression* expr,
}
case NAMED_SUPER_PROPERTY: {
__ Push(x0);
- VisitForStackValue(prop->obj()->AsSuperReference()->this_var());
+ VisitForStackValue(prop->obj()->AsSuperPropertyReference()->this_var());
VisitForAccumulatorValue(
- prop->obj()->AsSuperReference()->home_object_var());
+ prop->obj()->AsSuperPropertyReference()->home_object_var());
// stack: value, this; x0: home_object
Register scratch = x10;
Register scratch2 = x11;
@@ -2357,8 +2377,9 @@ void FullCodeGenerator::EmitAssignment(Expression* expr,
}
case KEYED_SUPER_PROPERTY: {
__ Push(x0);
- VisitForStackValue(prop->obj()->AsSuperReference()->this_var());
- VisitForStackValue(prop->obj()->AsSuperReference()->home_object_var());
+ VisitForStackValue(prop->obj()->AsSuperPropertyReference()->this_var());
+ VisitForStackValue(
+ prop->obj()->AsSuperPropertyReference()->home_object_var());
VisitForAccumulatorValue(prop->key());
Register scratch = x10;
Register scratch2 = x11;
@@ -2584,8 +2605,9 @@ void FullCodeGenerator::VisitProperty(Property* expr) {
__ Move(LoadDescriptor::ReceiverRegister(), x0);
EmitNamedPropertyLoad(expr);
} else {
- VisitForStackValue(expr->obj()->AsSuperReference()->this_var());
- VisitForStackValue(expr->obj()->AsSuperReference()->home_object_var());
+ VisitForStackValue(expr->obj()->AsSuperPropertyReference()->this_var());
+ VisitForStackValue(
+ expr->obj()->AsSuperPropertyReference()->home_object_var());
EmitNamedSuperPropertyLoad(expr);
}
} else {
@@ -2596,8 +2618,9 @@ void FullCodeGenerator::VisitProperty(Property* expr) {
__ Pop(LoadDescriptor::ReceiverRegister());
EmitKeyedPropertyLoad(expr);
} else {
- VisitForStackValue(expr->obj()->AsSuperReference()->this_var());
- VisitForStackValue(expr->obj()->AsSuperReference()->home_object_var());
+ VisitForStackValue(expr->obj()->AsSuperPropertyReference()->this_var());
+ VisitForStackValue(
+ expr->obj()->AsSuperPropertyReference()->home_object_var());
VisitForStackValue(expr->key());
EmitKeyedSuperPropertyLoad(expr);
}
@@ -2665,7 +2688,8 @@ void FullCodeGenerator::EmitSuperCallWithLoadIC(Call* expr) {
// Load the function from the receiver.
const Register scratch = x10;
- SuperReference* super_ref = callee->AsProperty()->obj()->AsSuperReference();
+ SuperPropertyReference* super_ref =
+ callee->AsProperty()->obj()->AsSuperPropertyReference();
VisitForStackValue(super_ref->home_object_var());
VisitForAccumulatorValue(super_ref->this_var());
__ Push(x0);
@@ -2724,7 +2748,8 @@ void FullCodeGenerator::EmitKeyedSuperCallWithLoadIC(Call* expr) {
// Load the function from the receiver.
const Register scratch = x10;
- SuperReference* super_ref = callee->AsProperty()->obj()->AsSuperReference();
+ SuperPropertyReference* super_ref =
+ callee->AsProperty()->obj()->AsSuperPropertyReference();
VisitForStackValue(super_ref->home_object_var());
VisitForAccumulatorValue(super_ref->this_var());
__ Push(x0);
@@ -2805,15 +2830,8 @@ void FullCodeGenerator::EmitResolvePossiblyDirectEval(int arg_count) {
}
-void FullCodeGenerator::EmitLoadSuperConstructor() {
- __ ldr(x0, MemOperand(fp, JavaScriptFrameConstants::kFunctionOffset));
- __ Push(x0);
- __ CallRuntime(Runtime::kGetPrototype, 1);
-}
-
-
void FullCodeGenerator::EmitInitializeThisAfterSuper(
- SuperReference* super_ref, FeedbackVectorICSlot slot) {
+ SuperCallReference* super_ref, FeedbackVectorICSlot slot) {
Variable* this_var = super_ref->this_var()->var();
GetVar(x1, this_var);
Label uninitialized_this;
@@ -2973,7 +2991,7 @@ void FullCodeGenerator::VisitCallNew(CallNew* expr) {
// Push constructor on the stack. If it's not a function it's used as
// receiver for CALL_NON_FUNCTION, otherwise the value on the stack is
// ignored.
- DCHECK(!expr->expression()->IsSuperReference());
+ DCHECK(!expr->expression()->IsSuperPropertyReference());
VisitForStackValue(expr->expression());
// Push the arguments ("left-to-right") on the stack.
@@ -3009,11 +3027,14 @@ void FullCodeGenerator::VisitCallNew(CallNew* expr) {
void FullCodeGenerator::EmitSuperConstructorCall(Call* expr) {
- Variable* new_target_var = scope()->DeclarationScope()->new_target_var();
- GetVar(result_register(), new_target_var);
- __ Push(result_register());
+ SuperCallReference* super_call_ref =
+ expr->expression()->AsSuperCallReference();
+ DCHECK_NOT_NULL(super_call_ref);
- EmitLoadSuperConstructor();
+ VariableProxy* new_target_proxy = super_call_ref->new_target_var();
+ VisitForStackValue(new_target_proxy);
+
+ EmitLoadSuperConstructor(super_call_ref);
__ push(result_register());
// Push the arguments ("left-to-right") on the stack.
@@ -3051,8 +3072,7 @@ void FullCodeGenerator::EmitSuperConstructorCall(Call* expr) {
RecordJSReturnSite(expr);
- EmitInitializeThisAfterSuper(expr->expression()->AsSuperReference(),
- expr->CallFeedbackICSlot());
+ EmitInitializeThisAfterSuper(super_call_ref, expr->CallFeedbackICSlot());
context()->Plug(x0);
}
@@ -3932,11 +3952,15 @@ void FullCodeGenerator::EmitCallFunction(CallRuntime* expr) {
void FullCodeGenerator::EmitDefaultConstructorCallSuper(CallRuntime* expr) {
- Variable* new_target_var = scope()->DeclarationScope()->new_target_var();
- GetVar(result_register(), new_target_var);
- __ Push(result_register());
+ ZoneList<Expression*>* args = expr->arguments();
+ DCHECK(args->length() == 2);
+
+ // new.target
+ VisitForStackValue(args->at(0));
- EmitLoadSuperConstructor();
+ // .this_function
+ VisitForStackValue(args->at(1));
+ __ CallRuntime(Runtime::kGetPrototype, 1);
__ Push(result_register());
// Check if the calling frame is an arguments adaptor frame.
@@ -4309,11 +4333,14 @@ void FullCodeGenerator::EmitDebugIsActive(CallRuntime* expr) {
void FullCodeGenerator::EmitCallSuperWithSpread(CallRuntime* expr) {
// Assert: expr === CallRuntime("ReflectConstruct")
+ DCHECK_EQ(1, expr->arguments()->length());
CallRuntime* call = expr->arguments()->at(0)->AsCallRuntime();
+
ZoneList<Expression*>* args = call->arguments();
DCHECK_EQ(3, args->length());
- SuperReference* super_reference = args->at(0)->AsSuperReference();
+ SuperCallReference* super_call_ref = args->at(0)->AsSuperCallReference();
+ DCHECK_NOT_NULL(super_call_ref);
// Load ReflectConstruct function
EmitLoadJSRuntimeFunction(call);
@@ -4322,8 +4349,8 @@ void FullCodeGenerator::EmitCallSuperWithSpread(CallRuntime* expr) {
__ Pop(x10);
__ Push(x0, x10);
- // Push super
- EmitLoadSuperConstructor();
+ // Push super constructor
+ EmitLoadSuperConstructor(super_call_ref);
__ Push(result_register());
// Push arguments array
@@ -4340,7 +4367,7 @@ void FullCodeGenerator::EmitCallSuperWithSpread(CallRuntime* expr) {
context()->DropAndPlug(1, x0);
// TODO(mvstanton): with FLAG_vector_stores this needs a slot id.
- EmitInitializeThisAfterSuper(super_reference);
+ EmitInitializeThisAfterSuper(super_call_ref);
}
@@ -4562,9 +4589,9 @@ void FullCodeGenerator::VisitCountOperation(CountOperation* expr) {
}
case NAMED_SUPER_PROPERTY: {
- VisitForStackValue(prop->obj()->AsSuperReference()->this_var());
+ VisitForStackValue(prop->obj()->AsSuperPropertyReference()->this_var());
VisitForAccumulatorValue(
- prop->obj()->AsSuperReference()->home_object_var());
+ prop->obj()->AsSuperPropertyReference()->home_object_var());
__ Push(result_register());
const Register scratch = x10;
__ Peek(scratch, kPointerSize);
@@ -4574,8 +4601,9 @@ void FullCodeGenerator::VisitCountOperation(CountOperation* expr) {
}
case KEYED_SUPER_PROPERTY: {
- VisitForStackValue(prop->obj()->AsSuperReference()->this_var());
- VisitForStackValue(prop->obj()->AsSuperReference()->home_object_var());
+ VisitForStackValue(prop->obj()->AsSuperPropertyReference()->this_var());
+ VisitForStackValue(
+ prop->obj()->AsSuperPropertyReference()->home_object_var());
VisitForAccumulatorValue(prop->key());
__ Push(result_register());
const Register scratch1 = x10;
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