// Run the native code for the Array function called as a normal function.
// Tail call a stub.
- Handle<Object> undefined_sentinel(
- masm->isolate()->heap()->undefined_value(),
- masm->isolate());
- __ li(a2, Operand(undefined_sentinel));
+ Handle<Object> megamorphic_sentinel =
+ TypeFeedbackInfo::MegamorphicSentinel(masm->isolate());
+ __ li(a2, Operand(megamorphic_sentinel));
ArrayConstructorStub stub(masm->isolate());
__ TailCallStub(&stub);
}
__ mov(a0, a3);
if (is_construct) {
// No type feedback cell is available
- Handle<Object> undefined_sentinel(
- masm->isolate()->heap()->undefined_value(), masm->isolate());
- __ li(a2, Operand(undefined_sentinel));
+ Handle<Object> megamorphic_sentinel =
+ TypeFeedbackInfo::MegamorphicSentinel(masm->isolate());
+ __ li(a2, Operand(megamorphic_sentinel));
CallConstructStub stub(NO_CALL_FUNCTION_FLAGS);
__ CallStub(&stub);
} else {
Label initialize, done, miss, megamorphic, not_array_function;
ASSERT_EQ(*TypeFeedbackInfo::MegamorphicSentinel(masm->isolate()),
- masm->isolate()->heap()->undefined_value());
+ masm->isolate()->heap()->megamorphic_symbol());
ASSERT_EQ(*TypeFeedbackInfo::UninitializedSentinel(masm->isolate()),
- masm->isolate()->heap()->the_hole_value());
+ masm->isolate()->heap()->uninitialized_symbol());
// Load the cache state into t0.
__ sll(t0, a3, kPointerSizeLog2 - kSmiTagSize);
// A monomorphic miss (i.e, here the cache is not uninitialized) goes
// megamorphic.
- __ LoadRoot(at, Heap::kTheHoleValueRootIndex);
+ __ LoadRoot(at, Heap::kUninitializedSymbolRootIndex);
__ Branch(&initialize, eq, t0, Operand(at));
// MegamorphicSentinel is an immortal immovable object (undefined) so no
// write-barrier is needed.
__ bind(&megamorphic);
__ sll(t0, a3, kPointerSizeLog2 - kSmiTagSize);
__ Addu(t0, a2, Operand(t0));
- __ LoadRoot(at, Heap::kUndefinedValueRootIndex);
+ __ LoadRoot(at, Heap::kMegamorphicSymbolRootIndex);
__ sw(at, FieldMemOperand(t0, FixedArray::kHeaderSize));
__ jmp(&done);
void CallFunctionStub::Generate(MacroAssembler* masm) {
// a1 : the function to call
// a2 : feedback vector
- // a3 : (only if a2 is not undefined) slot in feedback vector (Smi)
+ // a3 : (only if a2 is not the megamorphic symbol) slot in feedback
+ // vector (Smi)
Label slow, non_function, wrap, cont;
if (NeedsChecks()) {
if (RecordCallTarget()) {
// If there is a call target cache, mark it megamorphic in the
// non-function case. MegamorphicSentinel is an immortal immovable
- // object (undefined) so no write barrier is needed.
+ // object (megamorphic symbol) so no write barrier is needed.
ASSERT_EQ(*TypeFeedbackInfo::MegamorphicSentinel(masm->isolate()),
- masm->isolate()->heap()->undefined_value());
+ masm->isolate()->heap()->megamorphic_symbol());
__ sll(t1, a3, kPointerSizeLog2 - kSmiTagSize);
__ Addu(t1, a2, Operand(t1));
- __ LoadRoot(at, Heap::kUndefinedValueRootIndex);
+ __ LoadRoot(at, Heap::kMegamorphicSymbolRootIndex);
__ sw(at, FieldMemOperand(t1, FixedArray::kHeaderSize));
}
// Check for function proxy.
// ----------- S t a t e -------------
// -- a0 : argc (only if argument_count_ == ANY)
// -- a1 : constructor
- // -- a2 : feedback vector (fixed array or undefined)
+ // -- a2 : feedback vector (fixed array or megamorphic symbol)
// -- a3 : slot index (if a2 is fixed array)
// -- sp[0] : return address
// -- sp[4] : last argument
// -----------------------------------
+
+ ASSERT_EQ(*TypeFeedbackInfo::MegamorphicSentinel(masm->isolate()),
+ masm->isolate()->heap()->megamorphic_symbol());
+
if (FLAG_debug_code) {
// The array construct code is only set for the global and natives
// builtin Array functions which always have maps.
__ Assert(eq, kUnexpectedInitialMapForArrayFunction,
t1, Operand(MAP_TYPE));
- // We should either have undefined in a2 or a valid fixed array.
+ // We should either have the megamorphic symbol in a2 or a valid
+ // fixed array.
Label okay_here;
Handle<Map> fixed_array_map = masm->isolate()->factory()->fixed_array_map();
- __ LoadRoot(at, Heap::kUndefinedValueRootIndex);
+ __ LoadRoot(at, Heap::kMegamorphicSymbolRootIndex);
__ Branch(&okay_here, eq, a2, Operand(at));
__ lw(t0, FieldMemOperand(a2, 0));
__ Assert(eq, kExpectedFixedArrayInRegisterA2,
Label no_info;
// Get the elements kind and case on that.
- __ LoadRoot(at, Heap::kUndefinedValueRootIndex);
+ __ LoadRoot(at, Heap::kMegamorphicSymbolRootIndex);
__ Branch(&no_info, eq, a2, Operand(at));
__ sll(t0, a3, kPointerSizeLog2 - kSmiTagSize);
__ Addu(a2, a2, Operand(t0));
__ li(a0, Operand(instr->arity()));
// No cell in a2 for construct type feedback in optimized code
- Handle<Object> undefined_value(isolate()->factory()->undefined_value());
- __ li(a2, Operand(undefined_value));
+ Handle<Object> megamorphic_symbol =
+ TypeFeedbackInfo::MegamorphicSentinel(isolate());
+ __ li(a2, Operand(megamorphic_symbol));
CallConstructStub stub(NO_CALL_FUNCTION_FLAGS);
CallCode(stub.GetCode(isolate()), RelocInfo::CONSTRUCT_CALL, instr);
}
ASSERT(ToRegister(instr->result()).is(v0));
__ li(a0, Operand(instr->arity()));
- __ li(a2, Operand(factory()->undefined_value()));
+ __ li(a2, Operand(TypeFeedbackInfo::MegamorphicSentinel(isolate())));
ElementsKind kind = instr->hydrogen()->elements_kind();
AllocationSiteOverrideMode override_mode =
(AllocationSite::GetMode(kind) == TRACK_ALLOCATION_SITE)