[test] Remove CSA::AllocateStruct() used only in tests

Bug: chromium:1024264
Change-Id: Ibb3965bb0619a2cefe64d2f8190dbc1959e5ef3d
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1915419Reviewed-by: Toon Verwaest <verwaest@chromium.org>
Commit-Queue: Igor Sheludko <ishell@chromium.org>
Cr-Commit-Position: refs/heads/master@{#64972}

src/builtins/promise-abstract-operations.tq

@@ -266,6 +266,7 @@ namespace promise {
     return executorContext;
   }
 
+  @export
   macro CreatePromiseCapability(
       promise: JSReceiver|Undefined, resolve: JSFunction|Undefined,
       reject: JSFunction|Undefined): PromiseCapability {

src/codegen/code-stub-assembler.cc

@@ -3745,29 +3745,6 @@ template V8_EXPORT_PRIVATE TNode<SmallOrderedHashSet>
 CodeStubAssembler::AllocateSmallOrderedHashTable<SmallOrderedHashSet>(
     TNode<IntPtrT> capacity);
 
-Node* CodeStubAssembler::AllocateStruct(Node* map, AllocationFlags flags) {
-  Comment("AllocateStruct");
-  CSA_ASSERT(this, IsMap(map));
-  TNode<IntPtrT> size = TimesTaggedSize(LoadMapInstanceSizeInWords(map));
-  TNode<HeapObject> object = Allocate(size, flags);
-  StoreMapNoWriteBarrier(object, map);
-  InitializeStructBody(object, size, Struct::kHeaderSize);
-  return object;
-}
-
-void CodeStubAssembler::InitializeStructBody(TNode<HeapObject> object,
-                                             TNode<IntPtrT> size,
-                                             int start_offset) {
-  Comment("InitializeStructBody");
-  TNode<Oddball> filler = UndefinedConstant();
-  // Calculate the untagged field addresses.
-  TNode<IntPtrT> start_address =
-      IntPtrAdd(BitcastTaggedToWord(object),
-                IntPtrConstant(start_offset - kHeapObjectTag));
-  TNode<IntPtrT> end_address = IntPtrAdd(start_address, size);
-  StoreFieldsNoWriteBarrier(start_address, end_address, filler);
-}
-
 TNode<JSObject> CodeStubAssembler::AllocateJSObjectFromMap(
     SloppyTNode<Map> map, SloppyTNode<HeapObject> properties,
     SloppyTNode<FixedArray> elements, AllocationFlags flags,

src/codegen/code-stub-assembler.h

@@ -1790,10 +1790,6 @@ class V8_EXPORT_PRIVATE CodeStubAssembler
   template <typename CollectionType>
   TNode<CollectionType> AllocateSmallOrderedHashTable(TNode<IntPtrT> capacity);
 
-  Node* AllocateStruct(Node* map, AllocationFlags flags = kNone);
-  void InitializeStructBody(TNode<HeapObject> object, TNode<IntPtrT> size,
-                            int start_offset = Struct::kHeaderSize);
-
   TNode<JSObject> AllocateJSObjectFromMap(
       SloppyTNode<Map> map, SloppyTNode<HeapObject> properties = nullptr,
       SloppyTNode<FixedArray> elements = nullptr, AllocationFlags flags = kNone,

test/cctest/test-code-stub-assembler.cc

@@ -2711,19 +2711,13 @@ TEST(CreatePromiseGetCapabilitiesExecutorContext) {
   CodeAssemblerTester asm_tester(isolate, kNumParams);
   PromiseBuiltinsAssembler m(asm_tester.state());
 
-  Node* const context = m.Parameter(kNumParams + 2);
-  const TNode<NativeContext> native_context = m.LoadNativeContext(context);
+  TNode<Context> context = m.CAST(m.Parameter(kNumParams + 2));
+  TNode<NativeContext> native_context = m.LoadNativeContext(context);
 
-  const TNode<Map> map = m.PromiseCapabilityMapConstant();
-  Node* const capability = m.AllocateStruct(map);
-  m.StoreObjectFieldNoWriteBarrier(
-      capability, PromiseCapability::kPromiseOffset, m.UndefinedConstant());
-  m.StoreObjectFieldNoWriteBarrier(
-      capability, PromiseCapability::kResolveOffset, m.UndefinedConstant());
-  m.StoreObjectFieldNoWriteBarrier(capability, PromiseCapability::kRejectOffset,
-                                   m.UndefinedConstant());
-  Node* const executor_context = m.CreatePromiseCapabilitiesExecutorContext(
-      native_context, m.CAST(capability));
+  TNode<PromiseCapability> capability = m.CreatePromiseCapability(
+      m.UndefinedConstant(), m.UndefinedConstant(), m.UndefinedConstant());
+  TNode<Context> executor_context =
+      m.CreatePromiseCapabilitiesExecutorContext(native_context, capability);
   m.Return(executor_context);
 
   FunctionTester ft(asm_tester.GenerateCode(), kNumParams);
@@ -3049,40 +3043,6 @@ TEST(LoadJSArrayElementsMap) {
   }
 }
 
-TEST(AllocateStruct) {
-  Isolate* isolate(CcTest::InitIsolateOnce());
-
-  const int kNumParams = 3;
-  CodeAssemblerTester asm_tester(isolate, kNumParams);
-  CodeStubAssembler m(asm_tester.state());
-
-  {
-    Node* map = m.Parameter(0);
-    Node* result = m.AllocateStruct(map);
-
-    m.Return(result);
-  }
-
-  FunctionTester ft(asm_tester.GenerateCode(), kNumParams);
-
-  Handle<Map> maps[] = {
-      handle(ReadOnlyRoots(isolate).tuple3_map(), isolate),
-      handle(ReadOnlyRoots(isolate).tuple2_map(), isolate),
-  };
-
-  {
-    for (size_t i = 0; i < 2; i++) {
-      Handle<Map> map = maps[i];
-      Handle<Struct> result =
-          Handle<Struct>::cast(ft.Call(map).ToHandleChecked());
-      CHECK_EQ(result->map(), *map);
-#ifdef VERIFY_HEAP
-      isolate->heap()->Verify();
-#endif
-    }
-  }
-}
-
 TEST(GotoIfNotWhiteSpaceOrLineTerminator) {
   Isolate* isolate(CcTest::InitIsolateOnce());