[stubs] A new approach to TF stubs

BUILD.gn

Index: BUILD.gn
diff --git a/BUILD.gn b/BUILD.gn
index 9fb1fdcc378856f0f9e569e59f9fa061109a6a66..0e692c65cfcd93e29876595c8808310ff345aa9c 100644
--- a/BUILD.gn
+++ b/BUILD.gn
@@ -266,40 +266,6 @@ action("js2c") {
   }
 }
 
-action("js2c_code_stubs") {
-  visibility = [ ":*" ]  # Only targets in this file can depend on this.
-
-  script = "tools/js2c.py"
-
-  # The script depends on this other script, this rule causes a rebuild if it
-  # changes.
-  inputs = [ "tools/jsmin.py" ]
-
-  sources = [
-    "src/js/macros.py",
-    "src/messages.h",
-    "src/js/code-stubs.js"
-  ]
-
-  outputs = [
-    "$target_gen_dir/code-stub-libraries.cc",
-  ]
-
-  args = [
-           rebase_path("$target_gen_dir/code-stub-libraries.cc",
-                       root_build_dir),
-           "CODE_STUB",
-         ] + rebase_path(sources, root_build_dir)
-
-  if (v8_use_external_startup_data) {
-    outputs += [ "$target_gen_dir/libraries_code_stub.bin" ]
-    args += [
-      "--startup_blob",
-      rebase_path("$target_gen_dir/libraries_code_stub.bin", root_build_dir),
-    ]
-  }
-}
-
 action("js2c_experimental") {
   visibility = [ ":*" ]  # Only targets in this file can depend on this.
 
@@ -440,7 +406,6 @@ if (v8_use_external_startup_data) {
 
     deps = [
       ":js2c",
-      ":js2c_code_stubs",
       ":js2c_experimental",
       ":js2c_extras",
       ":js2c_experimental_extras",
@@ -448,7 +413,6 @@ if (v8_use_external_startup_data) {
 
     sources = [
       "$target_gen_dir/libraries.bin",
-      "$target_gen_dir/libraries_code_stub.bin",
       "$target_gen_dir/libraries_experimental.bin",
       "$target_gen_dir/libraries_extras.bin",
       "$target_gen_dir/libraries_experimental_extras.bin",
@@ -536,7 +500,6 @@ source_set("v8_nosnapshot") {
 
   deps = [
     ":js2c",
-    ":js2c_code_stubs",
     ":js2c_experimental",
     ":js2c_extras",
     ":js2c_experimental_extras",
@@ -545,7 +508,6 @@ source_set("v8_nosnapshot") {
 
   sources = [
     "$target_gen_dir/libraries.cc",
-    "$target_gen_dir/code-stub-libraries.cc",
     "$target_gen_dir/experimental-libraries.cc",
     "$target_gen_dir/extras-libraries.cc",
     "$target_gen_dir/experimental-extras-libraries.cc",
@@ -571,7 +533,6 @@ source_set("v8_snapshot") {
 
   deps = [
     ":js2c",
-    ":js2c_code_stubs",
     ":js2c_experimental",
     ":js2c_extras",
     ":js2c_experimental_extras",
@@ -585,7 +546,6 @@ source_set("v8_snapshot") {
 
   sources = [
     "$target_gen_dir/libraries.cc",
-    "$target_gen_dir/code-stub-libraries.cc",
     "$target_gen_dir/experimental-libraries.cc",
     "$target_gen_dir/extras-libraries.cc",
     "$target_gen_dir/experimental-extras-libraries.cc",
@@ -607,7 +567,6 @@ if (v8_use_external_startup_data) {
 
     deps = [
       ":js2c",
-      ":js2c_code_stubs",
       ":js2c_experimental",
       ":js2c_extras",
       ":js2c_experimental_extras",
@@ -745,6 +704,8 @@ source_set("v8_base") {
     "src/compiler/code-generator-impl.h",
     "src/compiler/code-generator.cc",
     "src/compiler/code-generator.h",
+    "src/compiler/code-stub-assembler.cc",
+    "src/compiler/code-stub-assembler.h",
     "src/compiler/common-node-cache.cc",
     "src/compiler/common-node-cache.h",
     "src/compiler/common-operator-reducer.cc",