deps: update V8 to 12.9

common.gypi

@@ -36,7 +36,7 @@
 
     # Reset this number to 0 on major V8 upgrades.
     # Increment by one for each non-official patch applied to deps/v8.
-    'v8_embedder_string': '-node.15',
+    'v8_embedder_string': '-node.9',
 
     ##### V8 defaults for Node.js #####
 

deps/v8/.editorconfig

@@ -1,9 +1,9 @@
-root = true
+# editorconfig.org
 
 [*]
 charset = utf-8
-indent_style = space
-indent_size = 2
 end_of_line = lf
+indent_size = 2
+indent_style = space
 insert_final_newline = true
 trim_trailing_whitespace = true

deps/v8/.gitignore

@@ -88,8 +88,8 @@
 !/third_party/test262-harness
 !/third_party/v8
 !/third_party/wasm-api
-/tools/builtins-pgo/profiles/*.profile
-/tools/builtins-pgo/profiles/profiles_version
+/tools/builtins-pgo/profiles/*
+!/tools/builtins-pgo/profiles/.*
 /tools/clang
 /tools/gcmole/bootstrap
 /tools/gcmole/gcmole-tools

deps/v8/AUTHORS

@@ -143,11 +143,11 @@ Henrique Ferreiro <[email protected]>
 Helmut Januschka <[email protected]>
 Hirofumi Mako <[email protected]>
 Hisham Muhammad <[email protected]>
-Ho Cheung <[email protected]>
 Honggyu Kim <[email protected]>
 Huáng Jùnliàng <[email protected]>
 HyeockJin Kim <[email protected]>
 Iain Ireland <[email protected]>
+Ilya Gavrilin <[email protected]>
 Ingvar Stepanyan <[email protected]>
 Ioseb Dzmanashvili <[email protected]>
 Isiah Meadows <[email protected]>
@@ -170,6 +170,7 @@ Joel Stanley <[email protected]>
 Johan Bergström <[email protected]>
 Johan Levin <[email protected]>
 John Paul Adrian Glaubitz <[email protected]>
+Jojo R <[email protected]>
 Jonathan Liu <[email protected]>
 Juan Arboleda <[email protected]>
 Julien Brianceau <[email protected]>
@@ -205,6 +206,7 @@ Matt Hanselman <[email protected]>
 Matthew Sporleder <[email protected]>
 Maxim Mazurok <[email protected]>
 Maxim Mossienko <[email protected]>
+Md Hasibul Hasan <[email protected]>
 Meir Shpilraien <[email protected]>
 Michael Lutz <[email protected]>
 Michael Mclaughlin <[email protected]>
@@ -312,6 +314,7 @@ Yuxiang Cao <[email protected]>
 Zac Hansen <[email protected]>
 Zeynep Cankara <[email protected]>
 Zhao Jiazhong <[email protected]>
+Zhaojun Meng <[email protected]>
 Zheng Liu <[email protected]>
 Zhongping Wang <[email protected]>
 柳荣一 <[email protected]>

deps/v8/BUILD.bazel

@@ -43,7 +43,6 @@ load(":bazel/v8-non-pointer-compression.bzl", "v8_binary_non_pointer_compression
 # v8_enable_concurrent_marking
 # v8_enable_conservative_stack_scanning
 # v8_enable_direct_handle
-# v8_enable_direct_local
 # v8_enable_local_off_stack_check
 # v8_enable_ignition_dispatch_counting
 # v8_enable_builtins_optimization
@@ -208,6 +207,49 @@ v8_flag(
     default = True,
 )
 
+v8_flag(
+    name = "v8_enable_drumbrake",
+    default = False,
+)
+
+v8_flag(
+    name = "v8_enable_drumbrake_tracing",
+    default = False,
+)
+
+selects.config_setting_group(
+    name = "enable_drumbrake_x64",
+    match_all = [
+        ":is_v8_enable_drumbrake",
+        "@v8//bazel/config:v8_target_x64",
+    ],
+)
+
+selects.config_setting_group(
+    name = "enable_drumbrake_arm64",
+    match_all = [
+        ":is_v8_enable_drumbrake",
+        "@v8//bazel/config:v8_target_arm64",
+    ],
+)
+
+selects.config_setting_group(
+    name = "is_drumbrake_trap_handling_platform",
+    match_any = [
+        "@v8//bazel/config:is_linux",
+        "@v8//bazel/config:is_macos",
+        "@v8//bazel/config:is_windows",
+    ],
+)
+
+selects.config_setting_group(
+    name = "v8_drumbrake_bounds_checks",
+    match_all = [
+        ":enable_drumbrake_x64",
+        ":is_drumbrake_trap_handling_platform",
+    ],
+)
+
 v8_flag(
     name = "v8_jitless",
     default = False,
@@ -411,6 +453,8 @@ v8_config(
         "v8_enable_verify_heap": "VERIFY_HEAP",
         "v8_enable_verify_predictable": "VERIFY_PREDICTABLE",
         "v8_enable_webassembly": "V8_ENABLE_WEBASSEMBLY",
+        "v8_enable_drumbrake": "V8_ENABLE_DRUMBRAKE",
+        "v8_enable_drumbrake_tracing": "V8_ENABLE_DRUMBRAKE_TRACING",
         "v8_jitless": "V8_JITLESS",
         "v8_enable_vtunejit": "ENABLE_VTUNE_JIT_INTERFACE",
     },
@@ -518,7 +562,13 @@ v8_config(
             "V8_ENABLE_DOUBLE_CONST_STORE_CHECK",
         ],
         "//conditions:default": [],
+    }) + select({
+        "v8_drumbrake_bounds_checks": [
+            "V8_DRUMBRAKE_BOUNDS_CHECKS"
+        ],
+        "//conditions:default": [],
     }),
+
     deps = [":default"],
 )
 
@@ -757,7 +807,6 @@ filegroup(
         "src/base/numbers/strtod.h",
         "src/base/once.cc",
         "src/base/once.h",
-        "src/base/optional.h",
         "src/base/overflowing-math.h",
         "src/base/page-allocator.cc",
         "src/base/page-allocator.h",
@@ -1268,6 +1317,7 @@ filegroup(
         "src/builtins/builtins.cc",
         "src/builtins/builtins-inl.h",
         "src/builtins/builtins.h",
+        "src/builtins/builtins-abstract-module-source.cc",
         "src/builtins/builtins-api.cc",
         "src/builtins/builtins-array.cc",
         "src/builtins/builtins-arraybuffer.cc",
@@ -1402,6 +1452,8 @@ filegroup(
         "src/common/ptr-compr.cc",
         "src/common/ptr-compr.h",
         "src/common/ptr-compr-inl.h",
+        "src/common/segmented-table.h",
+        "src/common/segmented-table-inl.h",
         "src/common/simd128.h",
         "src/compiler-dispatcher/lazy-compile-dispatcher.cc",
         "src/compiler-dispatcher/lazy-compile-dispatcher.h",
@@ -2916,6 +2968,21 @@ filegroup(
             "src/wasm/wrappers.cc",
         ],
         "//conditions:default": [],
+    }) + select({
+        ":is_v8_enable_drumbrake": [
+            "src/wasm/interpreter/instruction-handlers.h",
+            "src/wasm/interpreter/wasm-interpreter.cc",
+            "src/wasm/interpreter/wasm-interpreter.h",
+            "src/wasm/interpreter/wasm-interpreter-inl.h",
+            "src/wasm/interpreter/wasm-interpreter-objects.cc",
+            "src/wasm/interpreter/wasm-interpreter-objects-inl.h",
+            "src/wasm/interpreter/wasm-interpreter-objects.h",
+            "src/wasm/interpreter/wasm-interpreter-runtime.cc",
+            "src/wasm/interpreter/wasm-interpreter-runtime-inl.h",
+            "src/wasm/interpreter/wasm-interpreter-runtime.h",
+            "src/wasm/interpreter/wasm-interpreter-simd.cc",
+        ],
+        "//conditions:default": [],
     }),
 )
 
@@ -3307,6 +3374,7 @@ filegroup(
         "src/compiler/turboshaft/store-store-elimination-phase.cc",
         "src/compiler/turboshaft/store-store-elimination-phase.h",
         "src/compiler/turboshaft/store-store-elimination-reducer-inl.h",
+        "src/compiler/turboshaft/string-view.h",
         "src/compiler/turboshaft/structural-optimization-reducer.h",
         "src/compiler/turboshaft/tracing.h",
         "src/compiler/turboshaft/type-assertions-phase.cc",
@@ -3579,6 +3647,14 @@ filegroup(
             "src/builtins/builtins-wasm-gen.h",
         ],
         "//conditions:default": [],
+    }) + select({
+        ":enable_drumbrake_x64": [
+            "src/wasm/interpreter/x64/interpreter-builtins-x64.cc"
+        ],
+        ":enable_drumbrake_arm64": [
+            "src/wasm/interpreter/arm64/interpreter-builtins-arm64.cc"
+        ],
+        "//conditions:default": [],
     }),
 )