chore: update V8 to 13.8.258.26

.bazelrc

@@ -55,6 +55,7 @@ build:clang-tsan --config=clang-xsan
 build:clang-tsan --copt -DTHREAD_SANITIZER=1
 build:clang-tsan --copt -fsanitize=thread
 build:clang-tsan --linkopt -fsanitize=thread
+build:clang-tsan --test_env=TSAN_OPTIONS=suppressions=bazel/tsan_suppressions.txt
 
 # Use Clang-Tidy tool.
 build:clang-tidy --config=clang
@@ -67,17 +68,14 @@ build:gcc --action_env=BAZEL_COMPILER=gcc
 build:gcc --action_env=CC=gcc
 build:gcc --action_env=CXX=g++
 
-# Use Zig C/C++ compiler.
-build:zig-cc --incompatible_enable_cc_toolchain_resolution
-build:zig-cc --extra_toolchains @zig_sdk//:aarch64-linux-gnu.2.28_toolchain
-build:zig-cc --extra_toolchains @zig_sdk//:x86_64-linux-gnu.2.28_toolchain
-build:zig-cc --host_copt=-fno-sanitize=undefined
+build:hermetic-llvm --incompatible_enable_cc_toolchain_resolution
+build:hermetic-llvm --action_env BAZEL_DO_NOT_DETECT_CPP_TOOLCHAIN=1
+build:hermetic-llvm --extra_toolchains @emsdk//emscripten_toolchain:cc-toolchain-wasm
 
-# Use Zig C/C++ compiler (cross-compile to Linux/aarch64).
-build:zig-cc-linux-aarch64 --config=zig-cc
-build:zig-cc-linux-aarch64 --platforms @zig_sdk//:linux_aarch64_platform
-build:zig-cc-linux-aarch64 --run_under=qemu-aarch64-static
-build:zig-cc-linux-aarch64 --test_env=QEMU_LD_PREFIX=/usr/aarch64-linux-gnu/
+build:hermetic-llvm-macos --config=hermetic-llvm
+# Below flags mitigate https://github.com/bazel-contrib/toolchains_llvm/pull/229.
+build:hermetic-llvm-macos --features=-libtool
+build:hermetic-llvm-macos --features=-supports_dynamic_linker
 
 build --enable_platform_specific_config
 
@@ -86,6 +84,7 @@ build:linux --cxxopt=-std=c++20 --host_cxxopt=-std=c++20
 build:macos --cxxopt=-std=c++20 --host_cxxopt=-std=c++20
 build:windows --cxxopt="/std:c++20" --host_cxxopt="/std:c++20"
 
+
 # Enable symlinks and runfiles on Windows (enabled by default on other platforms).
 startup --windows_enable_symlinks
 build:windows --enable_runfiles

.github/workflows/test.yml

@@ -139,23 +139,23 @@ jobs:
           os: ubuntu-24.04
           arch: x86_64
           action: test
-          flags: --config=clang --define=crypto=system
+          flags: --config=hermetic-llvm --define=crypto=system
           cache: true
         - name: 'V8 on Linux/x86_64 with ASan'
           engine: 'v8'
           repo: 'v8'
           os: ubuntu-24.04
           arch: x86_64
           action: test
-          flags: --config=clang-asan
+          flags: --config=hermetic-llvm --config=clang-asan
           cache: true
         - name: 'V8 on Linux/x86_64 with TSan'
           engine: 'v8'
           repo: 'v8'
           os: ubuntu-24.04
           arch: x86_64
           action: test
-          flags: --config=clang-tsan
+          flags: --config=hermetic-llvm --config=clang-tsan
           cache: true
         - name: 'V8 on Linux/x86_64 with GCC'
           engine: 'v8'
@@ -168,19 +168,19 @@ jobs:
         - name: 'V8 on Linux/aarch64'
           engine: 'v8'
           repo: 'v8'
-          os: ubuntu-24.04
+          os: ubuntu-24.04-arm
           arch: aarch64
           action: test
           targets: -//test/fuzz/...
-          flags: --config=zig-cc-linux-aarch64 --@v8//bazel/config:v8_target_cpu=arm64
-          deps: qemu-user-static libc6-arm64-cross
+          flags: --config=hermetic-llvm --@v8//bazel/config:v8_target_cpu=arm64
           cache: true
         - name: 'V8 on macOS/x86_64'
           engine: 'v8'
           repo: 'v8'
           os: macos-13
           arch: x86_64
           action: test
+          flags: --config=hermetic-llvm-macos
           cache: true
         - name: 'WAMR interp on Linux/x86_64'
           engine: 'wamr-interp'
@@ -241,11 +241,10 @@ jobs:
         - name: 'Wasmtime on Linux/aarch64'
           engine: 'wasmtime'
           repo: 'com_github_bytecodealliance_wasmtime'
-          os: ubuntu-24.04
+          os: ubuntu-24.04-arm
           arch: aarch64
           action: build
-          flags: --config=zig-cc-linux-aarch64
-          deps: qemu-user-static libc6-arm64-cross
+          flags: --config=hermetic-llvm
         - name: 'Wasmtime on Linux/s390x'
           engine: 'wasmtime'
           repo: 'com_github_bytecodealliance_wasmtime'

bazel/BUILD

@@ -68,3 +68,5 @@ selects.config_setting_group(
         ":linux_s390x",
     ],
 )
+
+exports_files(["tsan_suppressions.txt"])

bazel/cc_defs.bzl

@@ -0,0 +1,22 @@
+# Copyright 2025 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+load("@rules_cc//cc:defs.bzl", _cc_test = "cc_test")
+load("@rules_fuzzing//fuzzing:cc_defs.bzl", _cc_fuzz_test = "cc_fuzz_test")
+
+def cc_test(data = [], **kwargs):
+    _cc_test(data = data + ["//bazel:tsan_suppressions.txt"], **kwargs)
+
+def cc_fuzz_test(data = [], **kwargs):
+    _cc_fuzz_test(data = data + ["//bazel:tsan_suppressions.txt"], **kwargs)

bazel/dependencies.bzl

@@ -12,13 +12,15 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-load("@bazel-zig-cc//toolchain:defs.bzl", zig_register_toolchains = "register_toolchains")
 load("@com_google_protobuf//:protobuf_deps.bzl", "protobuf_deps")
+load("@envoy_toolshed//sysroot:sysroot.bzl", "setup_sysroots")
 load("@proxy_wasm_cpp_host//bazel/cargo/wasmsign/remote:crates.bzl", wasmsign_crate_repositories = "crate_repositories")
 load("@proxy_wasm_cpp_host//bazel/cargo/wasmtime/remote:crates.bzl", wasmtime_crate_repositories = "crate_repositories")
 load("@rules_python//python:repositories.bzl", "py_repositories", "python_register_toolchains")
 load("@rules_rust//crate_universe:repositories.bzl", "crate_universe_dependencies")
 load("@rules_rust//rust:repositories.bzl", "rust_repositories", "rust_repository_set")
+load("@toolchains_llvm//toolchain:deps.bzl", "bazel_toolchain_dependencies")
+load("@toolchains_llvm//toolchain:rules.bzl", "llvm_toolchain")
 
 def proxy_wasm_cpp_host_dependencies():
     # Bazel extensions.
@@ -52,14 +54,39 @@ def proxy_wasm_cpp_host_dependencies():
     )
     crate_universe_dependencies(bootstrap = True)
 
-    zig_register_toolchains(
-        version = "0.9.1",
-        url_format = "https://ziglang.org/download/{version}/zig-{host_platform}-{version}.tar.xz",
-        host_platform_sha256 = {
-            "linux-aarch64": "5d99a39cded1870a3fa95d4de4ce68ac2610cca440336cfd252ffdddc2b90e66",
-            "linux-x86_64": "be8da632c1d3273f766b69244d80669fe4f5e27798654681d77c992f17c237d7",
-            "macos-aarch64": "8c473082b4f0f819f1da05de2dbd0c1e891dff7d85d2c12b6ee876887d438287",
-            "macos-x86_64": "2d94984972d67292b55c1eb1c00de46580e9916575d083003546e9a01166754c",
+    setup_sysroots()
+    bazel_toolchain_dependencies()
+    llvm_toolchain(
+        name = "llvm_toolchain",
+        llvm_version = "19.1.0",
+        sha256 = {
+            "linux-x86_64": "cee77d641690466a193d9b88c89705de1c02bbad46bde6a3b126793c0a0f2923",
+            "linux-aarch64": "7bb54afd330fe1a1c2d4c593fa1e2dbe2abd9bf34fb3597994ff41e443cf144b",
+            "darwin-aarch64": "9da86f64a99f5ce9b679caf54e938736ca269c5e069d0c94ad08b995c5f25c16",
+            "darwin-x86_64": "264f2f1e8b67f066749349ae8b4943d346cd44e099464164ef21b42a57663540",
+        },
+        strip_prefix = {
+            "linux-x86_64": "LLVM-19.1.0-Linux-X64",
+            "linux-aarch64": "clang+llvm-19.1.0-aarch64-linux-gnu",
+            "darwin-aarch64": "LLVM-19.1.0-macOS-ARM64",
+            "darwin-x86_64": "LLVM-19.1.0-macOS-X64",
+        },
+        urls = {
+            "linux-x86_64": ["https://github.com/llvm/llvm-project/releases/download/llvmorg-19.1.0/LLVM-19.1.0-Linux-X64.tar.xz"],
+            "linux-aarch64": ["https://github.com/llvm/llvm-project/releases/download/llvmorg-19.1.0/clang+llvm-19.1.0-aarch64-linux-gnu.tar.xz"],
+            "darwin-aarch64": ["https://github.com/llvm/llvm-project/releases/download/llvmorg-19.1.0/LLVM-19.1.0-macOS-ARM64.tar.xz"],
+            "darwin-x86_64": ["https://github.com/llvm/llvm-project/releases/download/llvmorg-19.1.0/LLVM-19.1.0-macOS-X64.tar.xz"],
+        },
+    )
+
+    llvm_toolchain(
+        name = "llvm_aarch64",
+        llvm_version = "19.1.0",
+        toolchain_roots = {
+            "": "@llvm_toolchain_llvm//",
+        },
+        sysroot = {
+            "linux-aarch64": "@sysroot_linux_arm64//:sysroot",
         },
     )
 

bazel/dependencies_import.bzl

@@ -13,11 +13,14 @@
 # limitations under the License.
 
 load("@fuzzing_py_deps//:requirements.bzl", pip_fuzzing_dependencies = "install_deps")
+load("@llvm_toolchain//:toolchains.bzl", "llvm_register_toolchains")
 load("@rules_foreign_cc//foreign_cc:repositories.bzl", "rules_foreign_cc_dependencies")
 load("@rules_fuzzing//fuzzing:repositories.bzl", "rules_fuzzing_dependencies")
 load("@v8_python_deps//:requirements.bzl", pip_v8_dependencies = "install_deps")
 
 def proxy_wasm_cpp_host_dependencies_import():
+    llvm_register_toolchains()
+
     rules_foreign_cc_dependencies()
     rules_fuzzing_dependencies()
 

bazel/external/dragonbox.BUILD

@@ -0,0 +1,12 @@
+load("@rules_cc//cc:defs.bzl", "cc_library")
+
+licenses(["notice"])  # Apache 2
+
+package(default_visibility = ["//visibility:public"])
+
+cc_library(
+    name = "dragonbox",
+    srcs = [],
+    hdrs = ["include/dragonbox/dragonbox.h"],
+    includes = ["include/"],
+)

bazel/external/fp16.BUILD

@@ -0,0 +1,15 @@
+load("@rules_cc//cc:defs.bzl", "cc_library")
+
+licenses(["notice"])  # MIT
+
+package(default_visibility = ["//visibility:public"])
+
+cc_library(
+    name = "FP16",
+    hdrs = [
+        "include/fp16.h",
+        "include/fp16/bitcasts.h",
+        "include/fp16/fp16.h",
+    ],
+    includes = ["include/"],
+)

bazel/external/intel_ittapi.BUILD

@@ -0,0 +1,21 @@
+load("@rules_cc//cc:defs.bzl", "cc_library")
+
+licenses(["notice"])
+
+package(default_visibility = ["//visibility:public"])
+
+cc_library(
+    name = "lib_ittapi",
+    srcs = [
+        "include/ittnotify.h",
+        "include/jitprofiling.h",
+        "src/ittnotify/ittnotify_config.h",
+        "src/ittnotify/jitprofiling.c",
+    ],
+    hdrs = [
+        "include/ittnotify.h",
+        "src/ittnotify/ittnotify_types.h",
+    ],
+    includes = ["include/"],
+    visibility = ["//visibility:public"],
+)

bazel/external/simdutf.BUILD

@@ -0,0 +1,11 @@
+load("@rules_cc//cc:defs.bzl", "cc_library")
+
+licenses(["notice"])  # Apache 2
+
+package(default_visibility = ["//visibility:public"])
+
+cc_library(
+    name = "simdutf",
+    srcs = ["simdutf.cpp"],
+    hdrs = ["simdutf.h"],
+)