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X87: Add MEGAMORPHIC state support for KeyedStoreIC

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port r24500.

original commit message:

  Add MEGAMORPHIC state support for KeyedStoreIC

BUG=
R=weiliang.lin@intel.com

Review URL: https://codereview.chromium.org/642843004

Patch from Chunyang Dai <chunyang.dai@intel.com>.

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@24506 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
This commit is contained in:
weiliang.lin@intel.com 2014-10-10 05:40:44 +00:00
parent 980cc41238
commit e0e844b490
1 changed files with 27 additions and 4 deletions
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31
src/ic/x87/ic-x87.cc
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@ -674,12 +674,13 @@ static void KeyedStoreGenerateGenericHelper(
}
void KeyedStoreIC::GenerateGeneric(MacroAssembler* masm,
StrictMode strict_mode) {
void KeyedStoreIC::GenerateGeneric(
MacroAssembler* masm, StrictMode strict_mode,
KeyedStoreStubCacheRequirement handler_requirement) {
// Return address is on the stack.
Label slow, fast_object, fast_object_grow;
Label fast_double, fast_double_grow;
Label array, extra, check_if_double_array;
Label array, extra, check_if_double_array, maybe_name_key, miss;
Register receiver = StoreDescriptor::ReceiverRegister();
Register key = StoreDescriptor::NameRegister();
DCHECK(receiver.is(edx));
@ -695,7 +696,7 @@ void KeyedStoreIC::GenerateGeneric(MacroAssembler* masm,
1 << Map::kIsAccessCheckNeeded | 1 << Map::kIsObserved);
__ j(not_zero, &slow);
// Check that the key is a smi.
__ JumpIfNotSmi(key, &slow);
__ JumpIfNotSmi(key, &maybe_name_key);
__ CmpInstanceType(edi, JS_ARRAY_TYPE);
__ j(equal, &array);
// Check that the object is some kind of JSObject.
@ -713,6 +714,23 @@ void KeyedStoreIC::GenerateGeneric(MacroAssembler* masm,
// Slow case: call runtime.
__ bind(&slow);
PropertyICCompiler::GenerateRuntimeSetProperty(masm, strict_mode);
// Never returns to here.
__ bind(&maybe_name_key);
__ mov(ebx, FieldOperand(key, HeapObject::kMapOffset));
__ movzx_b(ebx, FieldOperand(ebx, Map::kInstanceTypeOffset));
__ JumpIfNotUniqueNameInstanceType(ebx, &slow);
Code::Flags flags = Code::RemoveTypeAndHolderFromFlags(
Code::ComputeHandlerFlags(Code::STORE_IC));
masm->isolate()->stub_cache()->GenerateProbe(masm, flags, false, receiver,
key, ebx, no_reg);
// Cache miss.
if (handler_requirement == kCallRuntimeOnMissingHandler) {
__ jmp(&slow);
} else {
DCHECK(handler_requirement == kMissOnMissingHandler);
__ jmp(&miss);
}
// Extra capacity case: Check if there is extra capacity to
// perform the store and update the length. Used for adding one
@ -755,6 +773,11 @@ void KeyedStoreIC::GenerateGeneric(MacroAssembler* masm,
kCheckMap, kDontIncrementLength);
KeyedStoreGenerateGenericHelper(masm, &fast_object_grow, &fast_double_grow,
&slow, kDontCheckMap, kIncrementLength);
if (handler_requirement == kMissOnMissingHandler) {
__ bind(&miss);
GenerateMiss(masm);
}
}