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

src/ic/mips64/ic-mips64.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_MIPS64
 
 #include "src/codegen.h"
 #include "src/ic/ic.h"
 #include "src/ic/ic-compiler.h"
 #include "src/ic/stub-cache.h"
@@ skipping 659 matching lines @@
   // Never returns to here.
 
   __ bind(&maybe_name_key);
   __ ld(a4, FieldMemOperand(key, HeapObject::kMapOffset));
   __ lb(a4, FieldMemOperand(a4, Map::kInstanceTypeOffset));
   __ JumpIfNotUniqueNameInstanceType(a4, &slow);
 
   if (FLAG_vector_stores) {
     // The handlers in the stub cache expect a vector and slot. Since we won't
     // change the IC from any downstream misses, a dummy vector can be used.
-    Register vector = LoadWithVectorDescriptor::VectorRegister();
-    Register slot = LoadWithVectorDescriptor::SlotRegister();
-    DCHECK(!AreAliased(vector, slot, a3, a4, a5, a6));
+    Register vector = VectorStoreICDescriptor::VectorRegister();
+    Register slot = VectorStoreICDescriptor::SlotRegister();
+
+    DCHECK(!AreAliased(vector, slot, a5, a6, a7, t0));
     Handle<TypeFeedbackVector> dummy_vector =
         TypeFeedbackVector::DummyVector(masm->isolate());
     int slot_index = dummy_vector->GetIndex(
         FeedbackVectorICSlot(TypeFeedbackVector::kDummyKeyedStoreICSlot));
     __ LoadRoot(vector, Heap::kDummyVectorRootIndex);
     __ li(slot, Operand(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, a3, a4, a5, a6);
+                                               receiver, key, a5, a6, a7, t0);
   // Cache miss.
   __ Branch(&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);
   // Condition code from comparing key and array length is still available.
   // Only support writing to array[array.length].
   __ Branch(&slow, ne, key, Operand(a4));
@@ skipping 80 matching lines @@
   int args = FLAG_vector_stores ? 5 : 3;
   __ TailCallRuntime(Runtime::kStoreIC_Miss, args, 1);
 }
 
 
 void StoreIC::GenerateNormal(MacroAssembler* masm) {
   Label miss;
   Register receiver = StoreDescriptor::ReceiverRegister();
   Register name = StoreDescriptor::NameRegister();
   Register value = StoreDescriptor::ValueRegister();
-  Register dictionary = a3;
-  DCHECK(!AreAliased(value, receiver, name, dictionary, a4, a5));
+  Register dictionary = a5;
+  DCHECK(!AreAliased(
+      value, receiver, name, VectorStoreICDescriptor::VectorRegister(),
+      VectorStoreICDescriptor::SlotRegister(), dictionary, a6, a7));
 
   __ ld(dictionary, FieldMemOperand(receiver, JSObject::kPropertiesOffset));
 
-  GenerateDictionaryStore(masm, &miss, a3, name, value, a4, a5);
+  GenerateDictionaryStore(masm, &miss, dictionary, name, value, a6, a7);
   Counters* counters = masm->isolate()->counters();
-  __ IncrementCounter(counters->store_normal_hit(), 1, a4, a5);
+  __ IncrementCounter(counters->store_normal_hit(), 1, a6, a7);
   __ Ret();
 
   __ bind(&miss);
-  __ IncrementCounter(counters->store_normal_miss(), 1, a4, a5);
+  __ IncrementCounter(counters->store_normal_miss(), 1, a6, a7);
   GenerateMiss(masm);
 }
 
 
 #undef __
 
 
 Condition CompareIC::ComputeCondition(Token::Value op) {
   switch (op) {
     case Token::EQ_STRICT:
@@ skipping 83 matching lines @@
     patcher.ChangeBranchCondition(ne);
   } else {
     DCHECK(Assembler::IsBne(branch_instr));
     patcher.ChangeBranchCondition(eq);
   }
 }
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_TARGET_ARCH_MIPS64