[cleanup] Tnodify ExitPoint

Also fixes its uses in interpreter-generator.cc and
accessor-assembler.cc.

Bug: v8:9810
Change-Id: Ie9817f3e53c54588a4ad28c2c98da1a48ac73681
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1906571Reviewed-by: Mythri Alle <mythria@chromium.org>
Commit-Queue: Dan Elphick <delphick@chromium.org>
Cr-Commit-Position: refs/heads/master@{#64875}

src/ic/accessor-assembler.cc

@@ -902,7 +902,7 @@ void AccessorAssembler::HandleLoadICProtoHandler(
     if (access_mode == LoadAccessMode::kHas) {
       exit_point->Return(TrueConstant());
     } else {
-      exit_point->Return(maybe_holder_or_constant);
+      exit_point->Return(CAST(maybe_holder_or_constant));
     }
   }
 

src/ic/accessor-assembler.h

@@ -7,6 +7,7 @@
 
 #include "src/base/optional.h"
 #include "src/codegen/code-stub-assembler.h"
+#include "src/compiler/code-assembler.h"
 
 namespace v8 {
 namespace internal {
@@ -425,7 +426,7 @@ class ExitPoint {
   using CodeAssemblerVariable = compiler::CodeAssemblerVariable;
 
  public:
-  using IndirectReturnHandler = std::function<void(Node* result)>;
+  using IndirectReturnHandler = std::function<void(TNode<Object> result)>;
 
   explicit ExitPoint(CodeStubAssembler* assembler)
       : ExitPoint(assembler, nullptr) {}
@@ -435,9 +436,9 @@ class ExitPoint {
       : asm_(assembler), indirect_return_handler_(indirect_return_handler) {}
 
   ExitPoint(CodeStubAssembler* assembler, CodeAssemblerLabel* out,
-            CodeAssemblerVariable* var_result)
-      : ExitPoint(assembler, [=](Node* result) {
-          var_result->Bind(result);
+            compiler::CodeAssembler::TVariable<Object>* var_result)
+      : ExitPoint(assembler, [=](TNode<Object> result) {
+          *var_result = result;
           assembler->Goto(out);
         }) {
     DCHECK_EQ(out != nullptr, var_result != nullptr);
@@ -473,7 +474,7 @@ class ExitPoint {
     }
   }
 
-  void Return(Node* const result) {
+  void Return(const TNode<Object> result) {
     if (IsDirect()) {
       asm_->Return(result);
     } else {

src/ic/keyed-store-generic.cc

@@ -1115,7 +1115,7 @@ void KeyedStoreGenericAssembler::SetProperty(TNode<Context> context,
   StoreICParameters p(context, receiver, unique_name, value, {}, nullptr);
 
   Label done(this), slow(this, Label::kDeferred);
-  ExitPoint exit_point(this, [&](Node* result) { Goto(&done); });
+  ExitPoint exit_point(this, [&](TNode<Object> result) { Goto(&done); });
 
   CSA_ASSERT(this, Word32Equal(is_simple_receiver,
                                IsSimpleObjectMap(LoadMap(receiver))));

src/interpreter/interpreter-generator.cc

@@ -162,7 +162,7 @@ class InterpreterLoadGlobalAssembler : public InterpreterAssembler {
     TNode<HeapObject> maybe_feedback_vector = LoadFeedbackVector();
 
     AccessorAssembler accessor_asm(state());
-    ExitPoint exit_point(this, [=](Node* result) {
+    ExitPoint exit_point(this, [=](TNode<Object> result) {
       SetAccumulator(result);
       Dispatch();
     });