MIPS: Introduce FeedbackVectorSlot type - better than int.

Port r24528 (f7b7e5a)

Original commit message:
It's good to have typing around this value.

BUG=
R=paul.lind@imgtec.com

Review URL: https://codereview.chromium.org/644583004

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@24534 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

src/mips64/full-codegen-mips64.cc

@@ -1088,7 +1088,7 @@ void FullCodeGenerator::VisitSwitchStatement(SwitchStatement* stmt) {
 
 void FullCodeGenerator::VisitForInStatement(ForInStatement* stmt) {
   Comment cmnt(masm_, "[ ForInStatement");
-  int slot = stmt->ForInFeedbackSlot();
+  FeedbackVectorSlot slot = stmt->ForInFeedbackSlot();
   SetStatementPosition(stmt);
 
   Label loop, exit;
@@ -1176,7 +1176,7 @@ void FullCodeGenerator::VisitForInStatement(ForInStatement* stmt) {
 
   __ li(a1, FeedbackVector());
   __ li(a2, Operand(TypeFeedbackVector::MegamorphicSentinel(isolate())));
-  __ sd(a2, FieldMemOperand(a1, FixedArray::OffsetOfElementAt(slot)));
+  __ sd(a2, FieldMemOperand(a1, FixedArray::OffsetOfElementAt(slot.ToInt())));
 
   __ li(a1, Operand(Smi::FromInt(1)));  // Smi indicates slow check
   __ ld(a2, MemOperand(sp, 0 * kPointerSize));  // Get enumerated object
@@ -1348,7 +1348,7 @@ void FullCodeGenerator::EmitLoadHomeObject(SuperReference* expr) {
 
   if (FLAG_vector_ics) {
     __ li(VectorLoadICDescriptor::SlotRegister(),
-          Operand(Smi::FromInt(expr->HomeObjectFeedbackSlot())));
+          Operand(SmiFromSlot(expr->HomeObjectFeedbackSlot())));
     CallLoadIC(NOT_CONTEXTUAL);
   } else {
     CallLoadIC(NOT_CONTEXTUAL, expr->HomeObjectFeedbackId());
@@ -1410,7 +1410,7 @@ void FullCodeGenerator::EmitLoadGlobalCheckExtensions(VariableProxy* proxy,
   __ li(LoadDescriptor::NameRegister(), Operand(proxy->var()->name()));
   if (FLAG_vector_ics) {
     __ li(VectorLoadICDescriptor::SlotRegister(),
-          Operand(Smi::FromInt(proxy->VariableFeedbackSlot())));
+          Operand(SmiFromSlot(proxy->VariableFeedbackSlot())));
   }
 
   ContextualMode mode = (typeof_state == INSIDE_TYPEOF)
@@ -1501,7 +1501,7 @@ void FullCodeGenerator::EmitVariableLoad(VariableProxy* proxy) {
       __ li(LoadDescriptor::NameRegister(), Operand(var->name()));
       if (FLAG_vector_ics) {
         __ li(VectorLoadICDescriptor::SlotRegister(),
-              Operand(Smi::FromInt(proxy->VariableFeedbackSlot())));
+              Operand(SmiFromSlot(proxy->VariableFeedbackSlot())));
       }
       CallLoadIC(CONTEXTUAL);
       context()->Plug(v0);
@@ -2135,7 +2135,7 @@ void FullCodeGenerator::VisitYield(Yield* expr) {
       __ ld(load_name, MemOperand(sp, 2 * kPointerSize));
       if (FLAG_vector_ics) {
         __ li(VectorLoadICDescriptor::SlotRegister(),
-              Operand(Smi::FromInt(expr->KeyedLoadFeedbackSlot())));
+              Operand(SmiFromSlot(expr->KeyedLoadFeedbackSlot())));
       }
       Handle<Code> ic = CodeFactory::KeyedLoadIC(isolate()).code();
       CallIC(ic, TypeFeedbackId::None());
@@ -2155,7 +2155,7 @@ void FullCodeGenerator::VisitYield(Yield* expr) {
       __ LoadRoot(load_name, Heap::kdone_stringRootIndex);  // "done"
       if (FLAG_vector_ics) {
         __ li(VectorLoadICDescriptor::SlotRegister(),
-              Operand(Smi::FromInt(expr->DoneFeedbackSlot())));
+              Operand(SmiFromSlot(expr->DoneFeedbackSlot())));
       }
       CallLoadIC(NOT_CONTEXTUAL);                           // v0=result.done
       __ mov(a0, v0);
@@ -2168,7 +2168,7 @@ void FullCodeGenerator::VisitYield(Yield* expr) {
       __ LoadRoot(load_name, Heap::kvalue_stringRootIndex);  // "value"
       if (FLAG_vector_ics) {
         __ li(VectorLoadICDescriptor::SlotRegister(),
-              Operand(Smi::FromInt(expr->ValueFeedbackSlot())));
+              Operand(SmiFromSlot(expr->ValueFeedbackSlot())));
       }
       CallLoadIC(NOT_CONTEXTUAL);                            // v0=result.value
       context()->DropAndPlug(2, v0);                         // drop iter and g
@@ -2339,7 +2339,7 @@ void FullCodeGenerator::EmitNamedPropertyLoad(Property* prop) {
   __ li(LoadDescriptor::NameRegister(), Operand(key->value()));
   if (FLAG_vector_ics) {
     __ li(VectorLoadICDescriptor::SlotRegister(),
-          Operand(Smi::FromInt(prop->PropertyFeedbackSlot())));
+          Operand(SmiFromSlot(prop->PropertyFeedbackSlot())));
     CallLoadIC(NOT_CONTEXTUAL);
   } else {
     CallLoadIC(NOT_CONTEXTUAL, prop->PropertyFeedbackId());
@@ -2365,7 +2365,7 @@ void FullCodeGenerator::EmitKeyedPropertyLoad(Property* prop) {
   Handle<Code> ic = CodeFactory::KeyedLoadIC(isolate()).code();
   if (FLAG_vector_ics) {
     __ li(VectorLoadICDescriptor::SlotRegister(),
-          Operand(Smi::FromInt(prop->PropertyFeedbackSlot())));
+          Operand(SmiFromSlot(prop->PropertyFeedbackSlot())));
     CallIC(ic);
   } else {
     CallIC(ic, prop->PropertyFeedbackId());
@@ -2871,7 +2871,7 @@ void FullCodeGenerator::EmitCall(Call* expr, CallICState::CallType call_type) {
   SetSourcePosition(expr->position());
   Handle<Code> ic = CallIC::initialize_stub(
       isolate(), arg_count, call_type);
-  __ li(a3, Operand(Smi::FromInt(expr->CallFeedbackSlot())));
+  __ li(a3, Operand(SmiFromSlot(expr->CallFeedbackSlot())));
   __ ld(a1, MemOperand(sp, (arg_count + 1) * kPointerSize));
   // Don't assign a type feedback id to the IC, since type feedback is provided
   // by the vector above.
@@ -3067,12 +3067,12 @@ void FullCodeGenerator::VisitCallNew(CallNew* expr) {
   // Record call targets in unoptimized code.
   if (FLAG_pretenuring_call_new) {
     EnsureSlotContainsAllocationSite(expr->AllocationSiteFeedbackSlot());
-    DCHECK(expr->AllocationSiteFeedbackSlot() ==
-           expr->CallNewFeedbackSlot() + 1);
+    DCHECK(expr->AllocationSiteFeedbackSlot().ToInt() ==
+           expr->CallNewFeedbackSlot().ToInt() + 1);
   }
 
   __ li(a2, FeedbackVector());
-  __ li(a3, Operand(Smi::FromInt(expr->CallNewFeedbackSlot())));
+  __ li(a3, Operand(SmiFromSlot(expr->CallNewFeedbackSlot())));
 
   CallConstructStub stub(isolate(), RECORD_CONSTRUCTOR_TARGET);
   __ Call(stub.GetCode(), RelocInfo::CONSTRUCT_CALL);
@@ -4306,7 +4306,7 @@ void FullCodeGenerator::VisitCallRuntime(CallRuntime* expr) {
     __ li(LoadDescriptor::NameRegister(), Operand(expr->name()));
     if (FLAG_vector_ics) {
       __ li(VectorLoadICDescriptor::SlotRegister(),
-            Operand(Smi::FromInt(expr->CallRuntimeFeedbackSlot())));
+            Operand(SmiFromSlot(expr->CallRuntimeFeedbackSlot())));
       CallLoadIC(NOT_CONTEXTUAL);
     } else {
       CallLoadIC(NOT_CONTEXTUAL, expr->CallRuntimeFeedbackId());
@@ -4712,7 +4712,7 @@ void FullCodeGenerator::VisitForTypeofValue(Expression* expr) {
     __ li(LoadDescriptor::NameRegister(), Operand(proxy->name()));
     if (FLAG_vector_ics) {
       __ li(VectorLoadICDescriptor::SlotRegister(),
-            Operand(Smi::FromInt(proxy->VariableFeedbackSlot())));
+            Operand(SmiFromSlot(proxy->VariableFeedbackSlot())));
     }
     // Use a regular load, not a contextual load, to avoid a reference
     // error.

src/mips64/lithium-codegen-mips64.cc

@@ -2863,7 +2863,7 @@ void LCodeGen::EmitVectorLoadICRegisters(T* instr) {
   // No need to allocate this register.
   DCHECK(VectorLoadICDescriptor::SlotRegister().is(a0));
   __ li(VectorLoadICDescriptor::SlotRegister(),
-        Operand(Smi::FromInt(instr->hydrogen()->slot())));
+        Operand(Smi::FromInt(instr->hydrogen()->slot().ToInt())));
 }