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

Issue 1161623002: VectorICs: allocating slots for store ics in ast nodes. (Closed) Base URL: https://chromium.googlesource.com/v8/v8.git@master
Patch Set: Code comments. Created 5 years, 7 months ago
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Index: src/mips/full-codegen-mips.cc
diff --git a/src/mips/full-codegen-mips.cc b/src/mips/full-codegen-mips.cc
index f16030539d4258fe01162638558715ccfb10bb92..694bd84ac25f60851aaac03d795ffc3c92310c7e 100644
--- a/src/mips/full-codegen-mips.cc
+++ b/src/mips/full-codegen-mips.cc
@@ -1252,7 +1252,7 @@ void FullCodeGenerator::VisitForInStatement(ForInStatement* stmt) {
__ mov(result_register(), a3);
// Perform the assignment as if via '='.
{ EffectContext context(this);
- EmitAssignment(stmt->each());
+ EmitAssignment(stmt->each(), stmt->EachFeedbackSlot());
PrepareForBailoutForId(stmt->AssignmentId(), NO_REGISTERS);
}
@@ -1334,13 +1334,15 @@ void FullCodeGenerator::EmitLoadHomeObject(SuperReference* expr) {
void FullCodeGenerator::EmitSetHomeObjectIfNeeded(Expression* initializer,
- int offset) {
+ int offset,
+ FeedbackVectorICSlot slot) {
if (NeedsHomeObject(initializer)) {
__ lw(StoreDescriptor::ReceiverRegister(), MemOperand(sp));
__ li(StoreDescriptor::NameRegister(),
Operand(isolate()->factory()->home_object_symbol()));
__ lw(StoreDescriptor::ValueRegister(),
MemOperand(sp, offset * kPointerSize));
+ if (FLAG_vector_stores) EmitLoadStoreICSlot(slot);
CallStoreIC();
}
}
@@ -1663,6 +1665,10 @@ void FullCodeGenerator::VisitObjectLiteral(ObjectLiteral* expr) {
AccessorTable accessor_table(zone());
int property_index = 0;
+ // store_slot_index points to the vector ic slot for the next store ic used.
+ // ObjectLiteral::ComputeFeedbackRequirements controls the allocation of slots
+ // and must be updated if the number of store ics emitted here changes.
+ int store_slot_index = 0;
for (; property_index < expr->properties()->length(); property_index++) {
ObjectLiteral::Property* property = expr->properties()->at(property_index);
if (property->is_computed_name()) break;
@@ -1690,7 +1696,12 @@ void FullCodeGenerator::VisitObjectLiteral(ObjectLiteral* expr) {
DCHECK(StoreDescriptor::ValueRegister().is(a0));
__ li(StoreDescriptor::NameRegister(), Operand(key->value()));
__ lw(StoreDescriptor::ReceiverRegister(), MemOperand(sp));
- CallStoreIC(key->LiteralFeedbackId());
+ if (FLAG_vector_stores) {
+ EmitLoadStoreICSlot(expr->GetNthSlot(store_slot_index++));
+ CallStoreIC();
+ } else {
+ CallStoreIC(key->LiteralFeedbackId());
+ }
PrepareForBailoutForId(key->id(), NO_REGISTERS);
if (NeedsHomeObject(value)) {
@@ -1698,6 +1709,9 @@ void FullCodeGenerator::VisitObjectLiteral(ObjectLiteral* expr) {
__ li(StoreDescriptor::NameRegister(),
Operand(isolate()->factory()->home_object_symbol()));
__ lw(StoreDescriptor::ValueRegister(), MemOperand(sp));
+ if (FLAG_vector_stores) {
+ EmitLoadStoreICSlot(expr->GetNthSlot(store_slot_index++));
+ }
CallStoreIC();
}
} else {
@@ -1711,7 +1725,8 @@ void FullCodeGenerator::VisitObjectLiteral(ObjectLiteral* expr) {
VisitForStackValue(key);
VisitForStackValue(value);
if (property->emit_store()) {
- EmitSetHomeObjectIfNeeded(value, 2);
+ EmitSetHomeObjectIfNeeded(
+ value, 2, expr->SlotForHomeObject(value, &store_slot_index));
__ li(a0, Operand(Smi::FromInt(SLOPPY))); // PropertyAttributes.
__ push(a0);
__ CallRuntime(Runtime::kSetProperty, 4);
@@ -1749,9 +1764,13 @@ void FullCodeGenerator::VisitObjectLiteral(ObjectLiteral* expr) {
__ push(a0);
VisitForStackValue(it->first);
EmitAccessor(it->second->getter);
- EmitSetHomeObjectIfNeeded(it->second->getter, 2);
+ EmitSetHomeObjectIfNeeded(
+ it->second->getter, 2,
+ expr->SlotForHomeObject(it->second->getter, &store_slot_index));
EmitAccessor(it->second->setter);
- EmitSetHomeObjectIfNeeded(it->second->setter, 3);
+ EmitSetHomeObjectIfNeeded(
+ it->second->setter, 3,
+ expr->SlotForHomeObject(it->second->setter, &store_slot_index));
__ li(a0, Operand(Smi::FromInt(NONE)));
__ push(a0);
__ CallRuntime(Runtime::kDefineAccessorPropertyUnchecked, 5);
@@ -1786,7 +1805,8 @@ void FullCodeGenerator::VisitObjectLiteral(ObjectLiteral* expr) {
} else {
EmitPropertyKey(property, expr->GetIdForProperty(property_index));
VisitForStackValue(value);
- EmitSetHomeObjectIfNeeded(value, 2);
+ EmitSetHomeObjectIfNeeded(
+ value, 2, expr->SlotForHomeObject(value, &store_slot_index));
switch (property->kind()) {
case ObjectLiteral::Property::CONSTANT:
@@ -1832,6 +1852,10 @@ void FullCodeGenerator::VisitObjectLiteral(ObjectLiteral* expr) {
} else {
context()->Plug(v0);
}
+
+ // Verify that compilation exactly consumed the number of store ic slots that
+ // the ObjectLiteral node had to offer.
+ DCHECK(!FLAG_vector_stores || store_slot_index == expr->slot_count());
}
@@ -1948,7 +1972,7 @@ void FullCodeGenerator::VisitAssignment(Assignment* expr) {
Comment cmnt(masm_, "[ Assignment");
Property* property = expr->target()->AsProperty();
- LhsKind assign_type = GetAssignType(property);
+ LhsKind assign_type = Property::GetAssignType(property);
// Evaluate LHS expression.
switch (assign_type) {
@@ -2059,7 +2083,7 @@ void FullCodeGenerator::VisitAssignment(Assignment* expr) {
switch (assign_type) {
case VARIABLE:
EmitVariableAssignment(expr->target()->AsVariableProxy()->var(),
- expr->op());
+ expr->op(), expr->AssignmentSlot());
PrepareForBailoutForId(expr->AssignmentId(), TOS_REG);
context()->Plug(v0);
break;
@@ -2584,17 +2608,18 @@ void FullCodeGenerator::EmitBinaryOp(BinaryOperation* expr, Token::Value op) {
}
-void FullCodeGenerator::EmitAssignment(Expression* expr) {
+void FullCodeGenerator::EmitAssignment(Expression* expr,
+ FeedbackVectorICSlot slot) {
DCHECK(expr->IsValidReferenceExpression());
Property* prop = expr->AsProperty();
- LhsKind assign_type = GetAssignType(prop);
+ LhsKind assign_type = Property::GetAssignType(prop);
switch (assign_type) {
case VARIABLE: {
Variable* var = expr->AsVariableProxy()->var();
EffectContext context(this);
- EmitVariableAssignment(var, Token::ASSIGN);
+ EmitVariableAssignment(var, Token::ASSIGN, slot);
break;
}
case NAMED_PROPERTY: {
@@ -2604,6 +2629,7 @@ void FullCodeGenerator::EmitAssignment(Expression* expr) {
__ pop(StoreDescriptor::ValueRegister()); // Restore value.
__ li(StoreDescriptor::NameRegister(),
Operand(prop->key()->AsLiteral()->value()));
+ if (FLAG_vector_stores) EmitLoadStoreICSlot(slot);
CallStoreIC();
break;
}
@@ -2650,6 +2676,7 @@ void FullCodeGenerator::EmitAssignment(Expression* expr) {
__ mov(StoreDescriptor::NameRegister(), result_register());
__ Pop(StoreDescriptor::ValueRegister(),
StoreDescriptor::ReceiverRegister());
+ if (FLAG_vector_stores) EmitLoadStoreICSlot(slot);
Handle<Code> ic =
CodeFactory::KeyedStoreIC(isolate(), language_mode()).code();
CallIC(ic);
@@ -2673,12 +2700,14 @@ void FullCodeGenerator::EmitStoreToStackLocalOrContextSlot(
}
-void FullCodeGenerator::EmitVariableAssignment(Variable* var, Token::Value op) {
+void FullCodeGenerator::EmitVariableAssignment(Variable* var, Token::Value op,
+ FeedbackVectorICSlot slot) {
if (var->IsUnallocated()) {
// Global var, const, or let.
__ mov(StoreDescriptor::ValueRegister(), result_register());
__ li(StoreDescriptor::NameRegister(), Operand(var->name()));
__ lw(StoreDescriptor::ReceiverRegister(), GlobalObjectOperand());
+ if (FLAG_vector_stores) EmitLoadStoreICSlot(slot);
CallStoreIC();
} else if (var->mode() == LET && op != Token::INIT_LET) {
@@ -2773,7 +2802,12 @@ void FullCodeGenerator::EmitNamedPropertyAssignment(Assignment* expr) {
__ li(StoreDescriptor::NameRegister(),
Operand(prop->key()->AsLiteral()->value()));
__ pop(StoreDescriptor::ReceiverRegister());
- CallStoreIC(expr->AssignmentFeedbackId());
+ if (FLAG_vector_stores) {
+ EmitLoadStoreICSlot(expr->AssignmentSlot());
+ CallStoreIC();
+ } else {
+ CallStoreIC(expr->AssignmentFeedbackId());
+ }
PrepareForBailoutForId(expr->AssignmentId(), TOS_REG);
context()->Plug(v0);
@@ -2826,7 +2860,12 @@ void FullCodeGenerator::EmitKeyedPropertyAssignment(Assignment* expr) {
Handle<Code> ic =
CodeFactory::KeyedStoreIC(isolate(), language_mode()).code();
- CallIC(ic, expr->AssignmentFeedbackId());
+ if (FLAG_vector_stores) {
+ EmitLoadStoreICSlot(expr->AssignmentSlot());
+ CallIC(ic);
+ } else {
+ CallIC(ic, expr->AssignmentFeedbackId());
+ }
PrepareForBailoutForId(expr->AssignmentId(), TOS_REG);
context()->Plug(v0);
@@ -3066,7 +3105,7 @@ void FullCodeGenerator::EmitLoadSuperConstructor() {
void FullCodeGenerator::EmitInitializeThisAfterSuper(
- SuperReference* super_ref) {
+ SuperReference* super_ref, FeedbackVectorICSlot slot) {
Variable* this_var = super_ref->this_var()->var();
GetVar(a1, this_var);
__ LoadRoot(at, Heap::kTheHoleValueRootIndex);
@@ -3077,7 +3116,7 @@ void FullCodeGenerator::EmitInitializeThisAfterSuper(
__ CallRuntime(Runtime::kThrowReferenceError, 1);
__ bind(&uninitialized_this);
- EmitVariableAssignment(this_var, Token::INIT_CONST);
+ EmitVariableAssignment(this_var, Token::INIT_CONST, slot);
}
@@ -3302,7 +3341,8 @@ void FullCodeGenerator::EmitSuperConstructorCall(Call* expr) {
RecordJSReturnSite(expr);
- EmitInitializeThisAfterSuper(expr->expression()->AsSuperReference());
+ EmitInitializeThisAfterSuper(expr->expression()->AsSuperReference(),
+ expr->CallFeedbackICSlot());
context()->Plug(v0);
}
@@ -4625,6 +4665,7 @@ void FullCodeGenerator::EmitCallSuperWithSpread(CallRuntime* expr) {
__ lw(cp, MemOperand(fp, StandardFrameConstants::kContextOffset));
context()->DropAndPlug(1, v0);
+ // TODO(mvstanton): with FLAG_vector_stores this needs a slot id.
EmitInitializeThisAfterSuper(super_reference);
}
@@ -4827,7 +4868,7 @@ void FullCodeGenerator::VisitCountOperation(CountOperation* expr) {
SetSourcePosition(expr->position());
Property* prop = expr->expression()->AsProperty();
- LhsKind assign_type = GetAssignType(prop);
+ LhsKind assign_type = Property::GetAssignType(prop);
// Evaluate expression and get value.
if (assign_type == VARIABLE) {
@@ -4992,7 +5033,7 @@ void FullCodeGenerator::VisitCountOperation(CountOperation* expr) {
if (expr->is_postfix()) {
{ EffectContext context(this);
EmitVariableAssignment(expr->expression()->AsVariableProxy()->var(),
- Token::ASSIGN);
+ Token::ASSIGN, expr->CountSlot());
PrepareForBailoutForId(expr->AssignmentId(), TOS_REG);
context.Plug(v0);
}
@@ -5003,7 +5044,7 @@ void FullCodeGenerator::VisitCountOperation(CountOperation* expr) {
}
} else {
EmitVariableAssignment(expr->expression()->AsVariableProxy()->var(),
- Token::ASSIGN);
+ Token::ASSIGN, expr->CountSlot());
PrepareForBailoutForId(expr->AssignmentId(), TOS_REG);
context()->Plug(v0);
}
@@ -5013,7 +5054,12 @@ void FullCodeGenerator::VisitCountOperation(CountOperation* expr) {
__ li(StoreDescriptor::NameRegister(),
Operand(prop->key()->AsLiteral()->value()));
__ pop(StoreDescriptor::ReceiverRegister());
- CallStoreIC(expr->CountStoreFeedbackId());
+ if (FLAG_vector_stores) {
+ EmitLoadStoreICSlot(expr->CountSlot());
+ CallStoreIC();
+ } else {
+ CallStoreIC(expr->CountStoreFeedbackId());
+ }
PrepareForBailoutForId(expr->AssignmentId(), TOS_REG);
if (expr->is_postfix()) {
if (!context()->IsEffect()) {
@@ -5052,7 +5098,12 @@ void FullCodeGenerator::VisitCountOperation(CountOperation* expr) {
StoreDescriptor::NameRegister());
Handle<Code> ic =
CodeFactory::KeyedStoreIC(isolate(), language_mode()).code();
- CallIC(ic, expr->CountStoreFeedbackId());
+ if (FLAG_vector_stores) {
+ EmitLoadStoreICSlot(expr->CountSlot());
+ CallIC(ic);
+ } else {
+ CallIC(ic, expr->CountStoreFeedbackId());
+ }
PrepareForBailoutForId(expr->AssignmentId(), TOS_REG);
if (expr->is_postfix()) {
if (!context()->IsEffect()) {
@@ -5384,6 +5435,13 @@ void FullCodeGenerator::ClearPendingMessage() {
}
+void FullCodeGenerator::EmitLoadStoreICSlot(FeedbackVectorICSlot slot) {
+ DCHECK(FLAG_vector_stores && !slot.IsInvalid());
+ __ li(VectorStoreICTrampolineDescriptor::SlotRegister(),
+ Operand(SmiFromSlot(slot)));
+}
+
+
#undef __
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