[fullcodegen] Implement operand stack depth tracking.

src/full-codegen/ppc/full-codegen-ppc.cc

Index: src/full-codegen/ppc/full-codegen-ppc.cc
diff --git a/src/full-codegen/ppc/full-codegen-ppc.cc b/src/full-codegen/ppc/full-codegen-ppc.cc
index 253f7647f4fa0de7997e2c4d31b4108dac94b253..6e7486f732efae8a5fbeaea14132f220f59eda0f 100644
--- a/src/full-codegen/ppc/full-codegen-ppc.cc
+++ b/src/full-codegen/ppc/full-codegen-ppc.cc
@@ -540,21 +540,6 @@ void FullCodeGenerator::TestContext::Plug(Handle<Object> lit) const {
 }
 
 
-void FullCodeGenerator::EffectContext::DropAndPlug(int count,
-                                                   Register reg) const {
-  DCHECK(count > 0);
-  __ Drop(count);
-}
-
-
-void FullCodeGenerator::AccumulatorValueContext::DropAndPlug(
-    int count, Register reg) const {
-  DCHECK(count > 0);
-  __ Drop(count);
-  __ Move(result_register(), reg);
-}
-
-
 void FullCodeGenerator::StackValueContext::DropAndPlug(int count,
                                                        Register reg) const {
   DCHECK(count > 0);
@@ -563,17 +548,6 @@ void FullCodeGenerator::StackValueContext::DropAndPlug(int count,
 }
 
 
-void FullCodeGenerator::TestContext::DropAndPlug(int count,
-                                                 Register reg) const {
-  DCHECK(count > 0);
-  // For simplicity we always test the accumulator register.
-  __ Drop(count);
-  __ Move(result_register(), reg);
-  codegen()->PrepareForBailoutBeforeSplit(condition(), false, NULL, NULL);
-  codegen()->DoTest(this);
-}
-
-
 void FullCodeGenerator::EffectContext::Plug(Label* materialize_true,
                                             Label* materialize_false) const {
   DCHECK(materialize_true == materialize_false);
@@ -2076,34 +2050,6 @@ void FullCodeGenerator::EmitNamedPropertyLoad(Property* prop) {
 }
 
 
-void FullCodeGenerator::EmitNamedSuperPropertyLoad(Property* prop) {
-  // Stack: receiver, home_object.
-  SetExpressionPosition(prop);
-  Literal* key = prop->key()->AsLiteral();
-  DCHECK(!key->value()->IsSmi());
-  DCHECK(prop->IsSuperAccess());
-
-  __ Push(key->value());
-  __ CallRuntime(Runtime::kLoadFromSuper);
-}
-
-
-void FullCodeGenerator::EmitKeyedPropertyLoad(Property* prop) {
-  SetExpressionPosition(prop);
-  Handle<Code> ic = CodeFactory::KeyedLoadIC(isolate()).code();
-  __ mov(LoadDescriptor::SlotRegister(),
-         Operand(SmiFromSlot(prop->PropertyFeedbackSlot())));
-  CallIC(ic);
-}
-
-
-void FullCodeGenerator::EmitKeyedSuperPropertyLoad(Property* prop) {
-  // Stack: receiver, home_object, key.
-  SetExpressionPosition(prop);
-  __ CallRuntime(Runtime::kLoadKeyedFromSuper);
-}
-
-
 void FullCodeGenerator::EmitInlineSmiBinaryOp(BinaryOperation* expr,
                                               Token::Value op,
                                               Expression* left_expr,