deps: update V8 to 14.8

.github/workflows/test-linux.yml

@@ -44,7 +44,7 @@ env:
   CXX: ${{ (github.base_ref == 'main' || github.ref_name == 'main') && 'sccache' || '' }} clang++-19
   SCCACHE_GHA_ENABLED: ${{ github.base_ref == 'main' || github.ref_name == 'main' }}
   SCCACHE_IDLE_TIMEOUT: '0'
-  RUSTC_VERSION: '1.82'
+  RUSTC_VERSION: '1.86'
 
 permissions:
   contents: read

.github/workflows/test-macos.yml

@@ -66,7 +66,7 @@ env:
   PYTHON_VERSION: '3.14'
   XCODE_VERSION: '16.4'
   FLAKY_TESTS: keep_retrying
-  RUSTC_VERSION: '1.82'
+  RUSTC_VERSION: '1.86'
 
 permissions:
   contents: read

BUILDING.md

@@ -1048,8 +1048,8 @@ linking statically or dynamically with a version of [temporal\_rs](https://githu
 Temporal support is enabled by default starting in Node.js 26. Building it
 requires a Rust toolchain:
 
-* rustc >= 1.82 (with LLVM >= 19)
-* cargo >= 1.82
+* rustc >= 1.86 (with LLVM >= 19)
+* cargo >= 1.86
 
 If `--v8-enable-temporal-support` and `--v8-disable-temporal-support` are both
 omitted, `configure.py` probes for `cargo` and `rustc`. If either is missing,

common.gypi

@@ -40,7 +40,7 @@
 
     # 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.20',
+    'v8_embedder_string': '-node.18',
 
     ##### V8 defaults for Node.js #####
 
@@ -98,7 +98,7 @@
         'v8_base': '<(PRODUCT_DIR)/lib/libv8_snapshot.a',
       }, {
         'os_posix': 1,
-        'v8_postmortem_support%': 1,
+        'v8_postmortem_support%': 0,
       }],
       ['GENERATOR == "ninja"', {
         'obj_dir': '<(PRODUCT_DIR)/obj',

configure.py

@@ -55,7 +55,7 @@
 valid_mips_float_abi = ('soft', 'hard')
 valid_intl_modes = ('none', 'small-icu', 'full-icu', 'system-icu')
 icu_versions = json.loads((tools_path / 'icu' / 'icu_versions.json').read_text(encoding='utf-8'))
-maglev_enabled_architectures = ('x64', 'arm', 'arm64', 's390x')
+maglev_enabled_architectures = ('x64', 'arm', 'arm64', 's390x', 'ppc64', 'riscv64', 'loong64')
 
 # builtins may be removed later if they have been disabled by options
 shareable_builtins = {'undici/undici': 'deps/undici/undici.js',
@@ -1579,8 +1579,8 @@ def check_compiler(o):
   # cargo and rustc are needed for Temporal.
   if not options.v8_disable_temporal_support and not options.shared_temporal_capi:
     # Minimum cargo and rustc versions should match values in BUILDING.md.
-    min_cargo_ver_tuple = (1, 82)
-    min_rustc_ver_tuple = (1, 82)
+    min_cargo_ver_tuple = (1, 86)
+    min_rustc_ver_tuple = (1, 86)
     cargo = os.environ.get('CARGO', 'cargo')
     cargo_ver = get_cargo_version(cargo)
     print_verbose(f'Detected cargo (CARGO={cargo}): {cargo_ver}')