Remove CodeStubAssembler from final binary

With the last remaining TF code stubs gone, c-s-a.{h,cc} is no longer
needed in the final binary.

Bug: v8:7777
Change-Id: I8573199401678758698df56e0cb680f125f06bdc
Reviewed-on: https://chromium-review.googlesource.com/c/1346329
Commit-Queue: Jakob Gruber <jgruber@chromium.org>
Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Cr-Commit-Position: refs/heads/master@{#57721}

BUILD.gn

@@ -1404,6 +1404,8 @@ v8_source_set("v8_initializers") {
     "src/builtins/growable-fixed-array-gen.cc",
     "src/builtins/growable-fixed-array-gen.h",
     "src/builtins/setup-builtins-internal.cc",
+    "src/code-stub-assembler.cc",
+    "src/code-stub-assembler.h",
     "src/heap/setup-heap-internal.cc",
     "src/ic/accessor-assembler.cc",
     "src/ic/accessor-assembler.h",
@@ -1425,9 +1427,10 @@ v8_source_set("v8_initializers") {
       "src/builtins/builtins-async-iterator-gen.cc",
       "src/builtins/builtins-async-generator-gen.cc",
 
-      # This source file takes an unusually large amount of time to
-      # compile.  Build it separately to avoid bottlenecks.
+      # These source files take an unusually large amount of time to
+      # compile.  Build them separately to avoid bottlenecks.
       "src/builtins/builtins-regexp-gen.cc",
+      "src/code-stub-assembler.cc",
     ]
   }
 
@@ -1676,8 +1679,6 @@ v8_source_set("v8_base") {
     "src/code-factory.h",
     "src/code-reference.cc",
     "src/code-reference.h",
-    "src/code-stub-assembler.cc",
-    "src/code-stub-assembler.h",
     "src/code-stubs-utils.h",
     "src/code-stubs.cc",
     "src/code-stubs.h",
@@ -2686,7 +2687,6 @@ v8_source_set("v8_base") {
       # These source files take an unusually large amount of time to
       # compile.  Build them separately to avoid bottlenecks.
       "src/api.cc",
-      "src/code-stub-assembler.cc",
       "src/elements.cc",
       "src/heap/heap.cc",
       "src/objects.cc",

src/builtins/builtins-array.cc

@@ -5,7 +5,6 @@
 #include "src/builtins/builtins-utils-inl.h"
 #include "src/builtins/builtins.h"
 #include "src/code-factory.h"
-#include "src/code-stub-assembler.h"
 #include "src/contexts.h"
 #include "src/counters.h"
 #include "src/debug/debug.h"

src/code-stubs.cc

@@ -11,7 +11,6 @@
 #include "src/ast/ast.h"
 #include "src/bootstrapper.h"
 #include "src/code-factory.h"
-#include "src/code-stub-assembler.h"
 #include "src/code-stubs-utils.h"
 #include "src/code-tracer.h"
 #include "src/counters.h"
@@ -254,18 +253,6 @@ MaybeHandle<Code> CodeStub::GetCode(Isolate* isolate, uint32_t key) {
   return scope.CloseAndEscape(code);
 }
 
-Handle<Code> TurboFanCodeStub::GenerateCode() {
-  const char* name = CodeStub::MajorName(MajorKey());
-  Zone zone(isolate()->allocator(), ZONE_NAME);
-  CallInterfaceDescriptor descriptor(GetCallInterfaceDescriptor());
-  compiler::CodeAssemblerState state(
-      isolate(), &zone, descriptor, Code::STUB, name,
-      PoisoningMitigationLevel::kDontPoison, GetKey());
-  GenerateAssembly(&state);
-  return compiler::CodeAssembler::GenerateCode(
-      &state, AssemblerOptions::Default(isolate()));
-}
-
 int JSEntryStub::GenerateHandlerTable(MacroAssembler* masm) {
   int handler_table_offset = HandlerTable::EmitReturnTableStart(masm, 1);
   HandlerTable::EmitReturnEntry(masm, 0, handler_offset_);

src/code-stubs.h

@@ -360,25 +360,6 @@ class CodeStubDescriptor {
   bool has_miss_handler_;
 };
 
-
-class TurboFanCodeStub : public CodeStub {
- public:
-  // Retrieve the code for the stub. Generate the code if needed.
-  Handle<Code> GenerateCode() override;
-
-  int GetStackParameterCount() const override {
-    return GetCallInterfaceDescriptor().GetStackParameterCount();
-  }
-
- protected:
-  explicit TurboFanCodeStub(Isolate* isolate) : CodeStub(isolate) {}
-
-  virtual void GenerateAssembly(compiler::CodeAssemblerState* state) const = 0;
-
- private:
-  DEFINE_CODE_STUB_BASE(TurboFanCodeStub, CodeStub);
-};
-
 }  // namespace internal
 }  // namespace v8