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X87: VectorICs: use a vector slot to aid in array literal processing.

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port f2f46aff8b (r31242).

    original commit message:
    The lack of a vector slot for the keyed store operation in filling in
    non-constant array literal properties led to undesirable contortions in
    compilers downwind of full-codegen. The use of a single slot to initialize all
    the array elements is sufficient.

BUG=

Review URL: https://codereview.chromium.org/1422443004

Cr-Commit-Position: refs/heads/master@{#31505}
This commit is contained in:
zhengxing.li 2015-10-23 03:04:48 -07:00 committed by Commit bot
parent 562047df0f
commit 9826a77f33
1 changed files with 9 additions and 2 deletions
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11
src/full-codegen/x87/full-codegen-x87.cc
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@ -1653,7 +1653,6 @@ void FullCodeGenerator::VisitObjectLiteral(ObjectLiteral* expr) {
void FullCodeGenerator::VisitArrayLiteral(ArrayLiteral* expr) {
Comment cmnt(masm_, "[ ArrayLiteral");
expr->BuildConstantElements(isolate());
Handle<FixedArray> constant_elements = expr->constant_elements();
bool has_constant_fast_elements =
IsFastObjectElementsKind(expr->constant_elements_kind());
@ -1704,7 +1703,15 @@ void FullCodeGenerator::VisitArrayLiteral(ArrayLiteral* expr) {
}
VisitForAccumulatorValue(subexpr);
if (has_constant_fast_elements) {
if (FLAG_vector_stores) {
__ mov(StoreDescriptor::NameRegister(),
Immediate(Smi::FromInt(array_index)));
__ mov(StoreDescriptor::ReceiverRegister(), Operand(esp, kPointerSize));
EmitLoadStoreICSlot(expr->LiteralFeedbackSlot());
Handle<Code> ic =
CodeFactory::KeyedStoreIC(isolate(), language_mode()).code();
CallIC(ic);
} else if (has_constant_fast_elements) {
// Fast-case array literal with ElementsKind of FAST_*_ELEMENTS, they
// cannot transition and don't need to call the runtime stub.
int offset = FixedArray::kHeaderSize + (array_index * kPointerSize);