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Unified Diff: src/mips64/full-codegen-mips64.cc

Issue 1049793002: MIPS64: Ensure object literal element boilerplates aren't modified. (Closed) Base URL: https://chromium.googlesource.com/v8/v8.git@master
Patch Set: Created 5 years, 9 months ago
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Index: src/mips64/full-codegen-mips64.cc
diff --git a/src/mips64/full-codegen-mips64.cc b/src/mips64/full-codegen-mips64.cc
index 525b04a23e9e6af969e13ac0f378f82a3dc7cd77..91d374a2c0263c0c525c55df43c75fafbb76372b 100644
--- a/src/mips64/full-codegen-mips64.cc
+++ b/src/mips64/full-codegen-mips64.cc
@@ -1682,21 +1682,12 @@ void FullCodeGenerator::VisitObjectLiteral(ObjectLiteral* expr) {
__ ld(a3, FieldMemOperand(a3, JSFunction::kLiteralsOffset));
__ li(a2, Operand(Smi::FromInt(expr->literal_index())));
__ li(a1, Operand(constant_properties));
- int flags = expr->fast_elements()
- ? ObjectLiteral::kFastElements
- : ObjectLiteral::kNoFlags;
- flags |= expr->has_function()
- ? ObjectLiteral::kHasFunction
- : ObjectLiteral::kNoFlags;
- __ li(a0, Operand(Smi::FromInt(flags)));
- int properties_count = constant_properties->length() / 2;
- if (expr->may_store_doubles() || expr->depth() > 1 ||
- masm()->serializer_enabled() || flags != ObjectLiteral::kFastElements ||
- properties_count > FastCloneShallowObjectStub::kMaximumClonedProperties) {
+ __ li(a0, Operand(Smi::FromInt(expr->ComputeFlags())));
+ if (MustCreateObjectLiteralWithRuntime(expr)) {
__ Push(a3, a2, a1, a0);
__ CallRuntime(Runtime::kCreateObjectLiteral, 4);
} else {
- FastCloneShallowObjectStub stub(isolate(), properties_count);
+ FastCloneShallowObjectStub stub(isolate(), expr->properties_count());
__ CallStub(&stub);
}
PrepareForBailoutForId(expr->CreateLiteralId(), TOS_REG);
@@ -1888,21 +1879,10 @@ void FullCodeGenerator::VisitArrayLiteral(ArrayLiteral* expr) {
Comment cmnt(masm_, "[ ArrayLiteral");
expr->BuildConstantElements(isolate());
- int flags = expr->depth() == 1
- ? ArrayLiteral::kShallowElements
- : ArrayLiteral::kNoFlags;
-
- ZoneList<Expression*>* subexprs = expr->values();
- int length = subexprs->length();
Handle<FixedArray> constant_elements = expr->constant_elements();
- DCHECK_EQ(2, constant_elements->length());
- ElementsKind constant_elements_kind =
- static_cast<ElementsKind>(Smi::cast(constant_elements->get(0))->value());
bool has_fast_elements =
- IsFastObjectElementsKind(constant_elements_kind);
- Handle<FixedArrayBase> constant_elements_values(
- FixedArrayBase::cast(constant_elements->get(1)));
+ IsFastObjectElementsKind(expr->constant_elements_kind());
AllocationSiteMode allocation_site_mode = TRACK_ALLOCATION_SITE;
if (has_fast_elements && !FLAG_allocation_site_pretenuring) {
@@ -1916,8 +1896,8 @@ void FullCodeGenerator::VisitArrayLiteral(ArrayLiteral* expr) {
__ ld(a3, FieldMemOperand(a3, JSFunction::kLiteralsOffset));
__ li(a2, Operand(Smi::FromInt(expr->literal_index())));
__ li(a1, Operand(constant_elements));
- if (expr->depth() > 1 || length > JSObject::kInitialMaxFastElementArray) {
- __ li(a0, Operand(Smi::FromInt(flags)));
+ if (MustCreateArrayLiteralWithRuntime(expr)) {
+ __ li(a0, Operand(Smi::FromInt(expr->ComputeFlags())));
__ Push(a3, a2, a1, a0);
__ CallRuntime(Runtime::kCreateArrayLiteral, 4);
} else {
@@ -1927,6 +1907,8 @@ void FullCodeGenerator::VisitArrayLiteral(ArrayLiteral* expr) {
PrepareForBailoutForId(expr->CreateLiteralId(), TOS_REG);
bool result_saved = false; // Is the result saved to the stack?
+ ZoneList<Expression*>* subexprs = expr->values();
+ int length = subexprs->length();
// Emit code to evaluate all the non-constant subexpressions and to store
// them into the newly cloned array.
@@ -1944,7 +1926,7 @@ void FullCodeGenerator::VisitArrayLiteral(ArrayLiteral* expr) {
VisitForAccumulatorValue(subexpr);
- if (IsFastObjectElementsKind(constant_elements_kind)) {
+ if (has_fast_elements) {
int offset = FixedArray::kHeaderSize + (i * kPointerSize);
__ ld(a6, MemOperand(sp, kPointerSize)); // Copy of array literal.
__ ld(a1, FieldMemOperand(a6, JSObject::kElementsOffset));
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