Reland Vector ICs: platform support for vector-based stores.

src/ic/x64/ic-x64.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #if V8_TARGET_ARCH_X64
 
 #include "src/codegen.h"
 #include "src/ic/ic.h"
 #include "src/ic/ic-compiler.h"
 #include "src/ic/stub-cache.h"
@@ skipping 564 matching lines @@
         TypeFeedbackVector::DummyVector(masm->isolate());
     int slot_index = dummy_vector->GetIndex(
         FeedbackVectorICSlot(TypeFeedbackVector::kDummyKeyedStoreICSlot));
     __ Move(vector, dummy_vector);
     __ Move(slot, Smi::FromInt(slot_index));
   }
 
   Code::Flags flags = Code::RemoveTypeAndHolderFromFlags(
       Code::ComputeHandlerFlags(Code::STORE_IC));
   masm->isolate()->stub_cache()->GenerateProbe(masm, Code::STORE_IC, flags,
-                                               receiver, key, rbx, no_reg);
+                                               receiver, key, r9, no_reg);
   // Cache miss.
   __ jmp(&miss);
 
   // Extra capacity case: Check if there is extra capacity to
   // perform the store and update the length. Used for adding one
   // element to the array by writing to array[array.length].
   __ bind(&extra);
   // receiver is a JSArray.
   // rbx: receiver's elements array (a FixedArray)
   // flags: smicompare (receiver.length(), rbx)
@@ skipping 132 matching lines @@
   __ PushReturnAddressFrom(rbx);
 
   // Do tail-call to runtime routine.
   __ TailCallRuntime(is_strong(language_mode) ? Runtime::kKeyedGetPropertyStrong
                                               : Runtime::kKeyedGetProperty,
                      2, 1);
 }
 
 
 void StoreIC::GenerateMegamorphic(MacroAssembler* masm) {
+  if (FLAG_vector_stores) {
+    // This shouldn't be called.
+    __ int3();
+    return;
+  }
+
   // The return address is on the stack.
-
   // Get the receiver from the stack and probe the stub cache.
   Code::Flags flags = Code::RemoveTypeAndHolderFromFlags(
       Code::ComputeHandlerFlags(Code::STORE_IC));
   masm->isolate()->stub_cache()->GenerateProbe(
       masm, Code::STORE_IC, flags, StoreDescriptor::ReceiverRegister(),
       StoreDescriptor::NameRegister(), rbx, no_reg);
 
   // Cache miss: Jump to runtime.
   GenerateMiss(masm);
 }
@@ skipping 28 matching lines @@
   // Perform tail call to the entry.
   int args = FLAG_vector_stores ? 5 : 3;
   __ TailCallRuntime(Runtime::kStoreIC_Miss, args, 1);
 }
 
 
 void StoreIC::GenerateNormal(MacroAssembler* masm) {
   Register receiver = StoreDescriptor::ReceiverRegister();
   Register name = StoreDescriptor::NameRegister();
   Register value = StoreDescriptor::ValueRegister();
-  Register dictionary = rbx;
+  Register dictionary = r11;
+  DCHECK(!FLAG_vector_stores ||
+         !AreAliased(dictionary, VectorStoreICDescriptor::VectorRegister(),
+                     VectorStoreICDescriptor::SlotRegister()));
 
   Label miss;
 
   __ movp(dictionary, FieldOperand(receiver, JSObject::kPropertiesOffset));
   GenerateDictionaryStore(masm, &miss, dictionary, name, value, r8, r9);
   Counters* counters = masm->isolate()->counters();
   __ IncrementCounter(counters->store_normal_hit(), 1);
   __ ret(0);
 
   __ bind(&miss);
@@ skipping 79 matching lines @@
   Condition cc =
       (check == ENABLE_INLINED_SMI_CHECK)
           ? (*jmp_address == Assembler::kJncShortOpcode ? not_zero : zero)
           : (*jmp_address == Assembler::kJnzShortOpcode ? not_carry : carry);
   *jmp_address = static_cast<byte>(Assembler::kJccShortPrefix | cc);
 }
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_TARGET_ARCH_X64