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

src/ic/mips/ic-mips.cc

Index: src/ic/mips/ic-mips.cc
diff --git a/src/ic/mips/ic-mips.cc b/src/ic/mips/ic-mips.cc
index a673dbf254f8bd84b9e1d30f33b409108bb1a511..a1a118135bd336970c449b4c644997148b48050f 100644
--- a/src/ic/mips/ic-mips.cc
+++ b/src/ic/mips/ic-mips.cc
@@ -681,7 +681,7 @@ void KeyedStoreIC::GenerateMegamorphic(MacroAssembler* masm,
     // change the IC from any downstream misses, a dummy vector can be used.
     Register vector = VectorStoreICDescriptor::VectorRegister();
     Register slot = VectorStoreICDescriptor::SlotRegister();
-    DCHECK(!AreAliased(vector, slot, a3, t0, t1, t2));
+    DCHECK(!AreAliased(vector, slot, t1, t2, t4, t5));
     Handle<TypeFeedbackVector> dummy_vector =
         TypeFeedbackVector::DummyVector(masm->isolate());
     int slot_index = dummy_vector->GetIndex(
@@ -693,7 +693,7 @@ void KeyedStoreIC::GenerateMegamorphic(MacroAssembler* masm,
   Code::Flags flags = Code::RemoveTypeAndHolderFromFlags(
       Code::ComputeHandlerFlags(Code::STORE_IC));
   masm->isolate()->stub_cache()->GenerateProbe(masm, Code::STORE_IC, flags,
-                                               receiver, key, a3, t0, t1, t2);
+                                               receiver, key, t1, t2, t4, t5);
   // Cache miss.
   __ Branch(&miss);
 
@@ -794,20 +794,22 @@ void StoreIC::GenerateNormal(MacroAssembler* masm) {
   Register receiver = StoreDescriptor::ReceiverRegister();
   Register name = StoreDescriptor::NameRegister();
   Register value = StoreDescriptor::ValueRegister();
-  Register dictionary = a3;
+  Register dictionary = t1;
   DCHECK(receiver.is(a1));
   DCHECK(name.is(a2));
   DCHECK(value.is(a0));
+  DCHECK(VectorStoreICDescriptor::VectorRegister().is(a3));
+  DCHECK(VectorStoreICDescriptor::SlotRegister().is(t0));
 
   __ lw(dictionary, FieldMemOperand(receiver, JSObject::kPropertiesOffset));
 
-  GenerateDictionaryStore(masm, &miss, dictionary, name, value, t0, t1);
+  GenerateDictionaryStore(masm, &miss, dictionary, name, value, t2, t5);
   Counters* counters = masm->isolate()->counters();
-  __ IncrementCounter(counters->store_normal_hit(), 1, t0, t1);
+  __ IncrementCounter(counters->store_normal_hit(), 1, t2, t5);
   __ Ret();
 
   __ bind(&miss);
-  __ IncrementCounter(counters->store_normal_miss(), 1, t0, t1);
+  __ IncrementCounter(counters->store_normal_miss(), 1, t2, t5);
   GenerateMiss(masm);
 }