Revision: 24506
Author: [email protected]
Date: Fri Oct 10 05:40:44 2014 UTC
Log: X87: Add MEGAMORPHIC state support for KeyedStoreIC
port r24500.
original commit message:
Add MEGAMORPHIC state support for KeyedStoreIC
BUG=
[email protected]
Review URL: https://codereview.chromium.org/642843004
Patch from Chunyang Dai <[email protected]>.
https://code.google.com/p/v8/source/detail?r=24506
Modified:
/branches/bleeding_edge/src/ic/x87/ic-x87.cc
=======================================
--- /branches/bleeding_edge/src/ic/x87/ic-x87.cc Tue Sep 23 03:44:35 2014
UTC
+++ /branches/bleeding_edge/src/ic/x87/ic-x87.cc Fri Oct 10 05:40:44 2014
UTC
@@ -674,12 +674,13 @@
}
-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 @@
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 @@
// 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 @@
kCheckMap, kDontIncrementLength);
KeyedStoreGenerateGenericHelper(masm, &fast_object_grow,
&fast_double_grow,
&slow, kDontCheckMap, kIncrementLength);
+
+ if (handler_requirement == kMissOnMissingHandler) {
+ __ bind(&miss);
+ GenerateMiss(masm);
+ }
}
--
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