PPC: VectorICs: allocating slots for store ics in ast nodes.

Port 5450fc07

Original commit message:
Also adapt code generation to pass the slot to the
store/keyed-store ic. AST nodes ObjectLiteral, Assignment,
ForEach, Call and CountOperation now include one or more
feedback vector ic slot ids.

R=mvstanton@chromium.org, dstence@us.ibm.com, michael_dawson@ca.ibm.com
BUG=

Review URL: https://codereview.chromium.org/1156503003

Cr-Commit-Position: refs/heads/master@{#28666}

src/ppc/full-codegen-ppc.cc

@@ -1245,7 +1245,7 @@ void FullCodeGenerator::VisitForInStatement(ForInStatement* stmt) {
   // Perform the assignment as if via '='.
   {
     EffectContext context(this);
-    EmitAssignment(stmt->each());
+    EmitAssignment(stmt->each(), stmt->EachFeedbackSlot());
     PrepareForBailoutForId(stmt->AssignmentId(), NO_REGISTERS);
   }
 
@@ -1304,13 +1304,15 @@ void FullCodeGenerator::VisitVariableProxy(VariableProxy* expr) {
 
 
 void FullCodeGenerator::EmitSetHomeObjectIfNeeded(Expression* initializer,
-                                                  int offset) {
+                                                  int offset,
+                                                  FeedbackVectorICSlot slot) {
   if (NeedsHomeObject(initializer)) {
     __ LoadP(StoreDescriptor::ReceiverRegister(), MemOperand(sp));
     __ mov(StoreDescriptor::NameRegister(),
            Operand(isolate()->factory()->home_object_symbol()));
     __ LoadP(StoreDescriptor::ValueRegister(),
              MemOperand(sp, offset * kPointerSize));
+    if (FLAG_vector_stores) EmitLoadStoreICSlot(slot);
     CallStoreIC();
   }
 }
@@ -1633,6 +1635,10 @@ void FullCodeGenerator::VisitObjectLiteral(ObjectLiteral* expr) {
 
   AccessorTable accessor_table(zone());
   int property_index = 0;
+  // store_slot_index points to the vector ic slot for the next store ic used.
+  // ObjectLiteral::ComputeFeedbackRequirements controls the allocation of slots
+  // and must be updated if the number of store ics emitted here changes.
+  int store_slot_index = 0;
   for (; property_index < expr->properties()->length(); property_index++) {
     ObjectLiteral::Property* property = expr->properties()->at(property_index);
     if (property->is_computed_name()) break;
@@ -1659,7 +1665,12 @@ void FullCodeGenerator::VisitObjectLiteral(ObjectLiteral* expr) {
             DCHECK(StoreDescriptor::ValueRegister().is(r3));
             __ mov(StoreDescriptor::NameRegister(), Operand(key->value()));
             __ LoadP(StoreDescriptor::ReceiverRegister(), MemOperand(sp));
+            if (FLAG_vector_stores) {
+              EmitLoadStoreICSlot(expr->GetNthSlot(store_slot_index++));
+              CallStoreIC();
+            } else {
               CallStoreIC(key->LiteralFeedbackId());
+            }
             PrepareForBailoutForId(key->id(), NO_REGISTERS);
 
             if (NeedsHomeObject(value)) {
@@ -1667,6 +1678,9 @@ void FullCodeGenerator::VisitObjectLiteral(ObjectLiteral* expr) {
               __ mov(StoreDescriptor::NameRegister(),
                      Operand(isolate()->factory()->home_object_symbol()));
               __ LoadP(StoreDescriptor::ValueRegister(), MemOperand(sp));
+              if (FLAG_vector_stores) {
+                EmitLoadStoreICSlot(expr->GetNthSlot(store_slot_index++));
+              }
               CallStoreIC();
             }
           } else {
@@ -1680,7 +1694,8 @@ void FullCodeGenerator::VisitObjectLiteral(ObjectLiteral* expr) {
         VisitForStackValue(key);
         VisitForStackValue(value);
         if (property->emit_store()) {
-          EmitSetHomeObjectIfNeeded(value, 2);
+          EmitSetHomeObjectIfNeeded(
+              value, 2, expr->SlotForHomeObject(value, &store_slot_index));
           __ LoadSmiLiteral(r3, Smi::FromInt(SLOPPY));  // PropertyAttributes
           __ push(r3);
           __ CallRuntime(Runtime::kSetProperty, 4);
@@ -1717,9 +1732,13 @@ void FullCodeGenerator::VisitObjectLiteral(ObjectLiteral* expr) {
     __ push(r3);
     VisitForStackValue(it->first);
     EmitAccessor(it->second->getter);
-    EmitSetHomeObjectIfNeeded(it->second->getter, 2);
+    EmitSetHomeObjectIfNeeded(
+        it->second->getter, 2,
+        expr->SlotForHomeObject(it->second->getter, &store_slot_index));
     EmitAccessor(it->second->setter);
-    EmitSetHomeObjectIfNeeded(it->second->setter, 3);
+    EmitSetHomeObjectIfNeeded(
+        it->second->setter, 3,
+        expr->SlotForHomeObject(it->second->setter, &store_slot_index));
     __ LoadSmiLiteral(r3, Smi::FromInt(NONE));
     __ push(r3);
     __ CallRuntime(Runtime::kDefineAccessorPropertyUnchecked, 5);
@@ -1754,7 +1773,8 @@ void FullCodeGenerator::VisitObjectLiteral(ObjectLiteral* expr) {
     } else {
       EmitPropertyKey(property, expr->GetIdForProperty(property_index));
       VisitForStackValue(value);
-      EmitSetHomeObjectIfNeeded(value, 2);
+      EmitSetHomeObjectIfNeeded(
+          value, 2, expr->SlotForHomeObject(value, &store_slot_index));
 
       switch (property->kind()) {
         case ObjectLiteral::Property::CONSTANT:
@@ -1800,6 +1820,10 @@ void FullCodeGenerator::VisitObjectLiteral(ObjectLiteral* expr) {
   } else {
     context()->Plug(r3);
   }
+
+  // Verify that compilation exactly consumed the number of store ic slots that
+  // the ObjectLiteral node had to offer.
+  DCHECK(!FLAG_vector_stores || store_slot_index == expr->slot_count());
 }
 
 
@@ -1913,7 +1937,7 @@ void FullCodeGenerator::VisitAssignment(Assignment* expr) {
   Comment cmnt(masm_, "[ Assignment");
 
   Property* property = expr->target()->AsProperty();
-  LhsKind assign_type = GetAssignType(property);
+  LhsKind assign_type = Property::GetAssignType(property);
 
   // Evaluate LHS expression.
   switch (assign_type) {
@@ -2024,7 +2048,7 @@ void FullCodeGenerator::VisitAssignment(Assignment* expr) {
   switch (assign_type) {
     case VARIABLE:
       EmitVariableAssignment(expr->target()->AsVariableProxy()->var(),
-                             expr->op());
+                             expr->op(), expr->AssignmentSlot());
       PrepareForBailoutForId(expr->AssignmentId(), TOS_REG);
       context()->Plug(r3);
       break;
@@ -2596,17 +2620,18 @@ void FullCodeGenerator::EmitBinaryOp(BinaryOperation* expr, Token::Value op) {
 }
 
 
-void FullCodeGenerator::EmitAssignment(Expression* expr) {
+void FullCodeGenerator::EmitAssignment(Expression* expr,
+                                       FeedbackVectorICSlot slot) {
   DCHECK(expr->IsValidReferenceExpression());
 
   Property* prop = expr->AsProperty();
-  LhsKind assign_type = GetAssignType(prop);
+  LhsKind assign_type = Property::GetAssignType(prop);
 
   switch (assign_type) {
     case VARIABLE: {
       Variable* var = expr->AsVariableProxy()->var();
       EffectContext context(this);
-      EmitVariableAssignment(var, Token::ASSIGN);
+      EmitVariableAssignment(var, Token::ASSIGN, slot);
       break;
     }
     case NAMED_PROPERTY: {
@@ -2616,6 +2641,7 @@ void FullCodeGenerator::EmitAssignment(Expression* expr) {
       __ pop(StoreDescriptor::ValueRegister());  // Restore value.
       __ mov(StoreDescriptor::NameRegister(),
              Operand(prop->key()->AsLiteral()->value()));
+      if (FLAG_vector_stores) EmitLoadStoreICSlot(slot);
       CallStoreIC();
       break;
     }
@@ -2662,6 +2688,7 @@ void FullCodeGenerator::EmitAssignment(Expression* expr) {
       __ Move(StoreDescriptor::NameRegister(), r3);
       __ Pop(StoreDescriptor::ValueRegister(),
              StoreDescriptor::ReceiverRegister());
+      if (FLAG_vector_stores) EmitLoadStoreICSlot(slot);
       Handle<Code> ic =
           CodeFactory::KeyedStoreIC(isolate(), language_mode()).code();
       CallIC(ic);
@@ -2685,11 +2712,13 @@ void FullCodeGenerator::EmitStoreToStackLocalOrContextSlot(
 }
 
 
-void FullCodeGenerator::EmitVariableAssignment(Variable* var, Token::Value op) {
+void FullCodeGenerator::EmitVariableAssignment(Variable* var, Token::Value op,
+                                               FeedbackVectorICSlot slot) {
   if (var->IsUnallocated()) {
     // Global var, const, or let.
     __ mov(StoreDescriptor::NameRegister(), Operand(var->name()));
     __ LoadP(StoreDescriptor::ReceiverRegister(), GlobalObjectOperand());
+    if (FLAG_vector_stores) EmitLoadStoreICSlot(slot);
     CallStoreIC();
 
   } else if (var->mode() == LET && op != Token::INIT_LET) {
@@ -2785,7 +2814,12 @@ void FullCodeGenerator::EmitNamedPropertyAssignment(Assignment* expr) {
   __ mov(StoreDescriptor::NameRegister(),
          Operand(prop->key()->AsLiteral()->value()));
   __ pop(StoreDescriptor::ReceiverRegister());
+  if (FLAG_vector_stores) {
+    EmitLoadStoreICSlot(expr->AssignmentSlot());
+    CallStoreIC();
+  } else {
     CallStoreIC(expr->AssignmentFeedbackId());
+  }
 
   PrepareForBailoutForId(expr->AssignmentId(), TOS_REG);
   context()->Plug(r3);
@@ -2832,7 +2866,12 @@ void FullCodeGenerator::EmitKeyedPropertyAssignment(Assignment* expr) {
 
   Handle<Code> ic =
       CodeFactory::KeyedStoreIC(isolate(), language_mode()).code();
+  if (FLAG_vector_stores) {
+    EmitLoadStoreICSlot(expr->AssignmentSlot());
+    CallIC(ic);
+  } else {
     CallIC(ic, expr->AssignmentFeedbackId());
+  }
 
   PrepareForBailoutForId(expr->AssignmentId(), TOS_REG);
   context()->Plug(r3);
@@ -3069,7 +3108,7 @@ void FullCodeGenerator::EmitLoadSuperConstructor() {
 
 
 void FullCodeGenerator::EmitInitializeThisAfterSuper(
-    SuperReference* super_ref) {
+    SuperReference* super_ref, FeedbackVectorICSlot slot) {
   Variable* this_var = super_ref->this_var()->var();
   GetVar(r4, this_var);
   __ CompareRoot(r4, Heap::kTheHoleValueRootIndex);
@@ -3080,7 +3119,7 @@ void FullCodeGenerator::EmitInitializeThisAfterSuper(
   __ CallRuntime(Runtime::kThrowReferenceError, 1);
   __ bind(&uninitialized_this);
 
-  EmitVariableAssignment(this_var, Token::INIT_CONST);
+  EmitVariableAssignment(this_var, Token::INIT_CONST, slot);
 }
 
 
@@ -3310,7 +3349,8 @@ void FullCodeGenerator::EmitSuperConstructorCall(Call* expr) {
 
   RecordJSReturnSite(expr);
 
-  EmitInitializeThisAfterSuper(expr->expression()->AsSuperReference());
+  EmitInitializeThisAfterSuper(expr->expression()->AsSuperReference(),
+                               expr->CallFeedbackICSlot());
   context()->Plug(r3);
 }
 
@@ -4629,6 +4669,7 @@ void FullCodeGenerator::EmitCallSuperWithSpread(CallRuntime* expr) {
   __ LoadP(cp, MemOperand(fp, StandardFrameConstants::kContextOffset));
   context()->DropAndPlug(1, r3);
 
+  // TODO(mvstanton): with FLAG_vector_stores this needs a slot id.
   EmitInitializeThisAfterSuper(super_reference);
 }
 
@@ -4827,7 +4868,7 @@ void FullCodeGenerator::VisitCountOperation(CountOperation* expr) {
   SetSourcePosition(expr->position());
 
   Property* prop = expr->expression()->AsProperty();
-  LhsKind assign_type = GetAssignType(prop);
+  LhsKind assign_type = Property::GetAssignType(prop);
 
   // Evaluate expression and get value.
   if (assign_type == VARIABLE) {
@@ -4994,7 +5035,7 @@ void FullCodeGenerator::VisitCountOperation(CountOperation* expr) {
         {
           EffectContext context(this);
           EmitVariableAssignment(expr->expression()->AsVariableProxy()->var(),
-                                 Token::ASSIGN);
+                                 Token::ASSIGN, expr->CountSlot());
           PrepareForBailoutForId(expr->AssignmentId(), TOS_REG);
           context.Plug(r3);
         }
@@ -5005,7 +5046,7 @@ void FullCodeGenerator::VisitCountOperation(CountOperation* expr) {
         }
       } else {
         EmitVariableAssignment(expr->expression()->AsVariableProxy()->var(),
-                               Token::ASSIGN);
+                               Token::ASSIGN, expr->CountSlot());
         PrepareForBailoutForId(expr->AssignmentId(), TOS_REG);
         context()->Plug(r3);
       }
@@ -5014,7 +5055,12 @@ void FullCodeGenerator::VisitCountOperation(CountOperation* expr) {
       __ mov(StoreDescriptor::NameRegister(),
              Operand(prop->key()->AsLiteral()->value()));
       __ pop(StoreDescriptor::ReceiverRegister());
+      if (FLAG_vector_stores) {
+        EmitLoadStoreICSlot(expr->CountSlot());
+        CallStoreIC();
+      } else {
         CallStoreIC(expr->CountStoreFeedbackId());
+      }
       PrepareForBailoutForId(expr->AssignmentId(), TOS_REG);
       if (expr->is_postfix()) {
         if (!context()->IsEffect()) {
@@ -5052,7 +5098,12 @@ void FullCodeGenerator::VisitCountOperation(CountOperation* expr) {
              StoreDescriptor::NameRegister());
       Handle<Code> ic =
           CodeFactory::KeyedStoreIC(isolate(), language_mode()).code();
+      if (FLAG_vector_stores) {
+        EmitLoadStoreICSlot(expr->CountSlot());
+        CallIC(ic);
+      } else {
         CallIC(ic, expr->CountStoreFeedbackId());
+      }
       PrepareForBailoutForId(expr->AssignmentId(), TOS_REG);
       if (expr->is_postfix()) {
         if (!context()->IsEffect()) {
@@ -5390,6 +5441,13 @@ void FullCodeGenerator::ClearPendingMessage() {
 }
 
 
+void FullCodeGenerator::EmitLoadStoreICSlot(FeedbackVectorICSlot slot) {
+  DCHECK(FLAG_vector_stores && !slot.IsInvalid());
+  __ mov(VectorStoreICTrampolineDescriptor::SlotRegister(),
+         Operand(SmiFromSlot(slot)));
+}
+
+
 #undef __