[test] Remove node/v8 memory64 flags. NFC (#23308)

In the latest versions of node and v8 memory64 is not longer
experimental.

In the older versions, the experimental memory64 support is not
compatible with the latest emscripten-generated memory64 modules (e.g.
table64 is completely missing).

Author: sbc100

.circleci/config.yml

@@ -312,7 +312,7 @@ commands:
             # this flag for now: https://crbug.com/638180
             CHROME_FLAGS_BASE: "--no-first-run -start-maximized --no-sandbox --use-gl=swiftshader --user-data-dir=/tmp/chrome-emscripten-profile --enable-experimental-web-platform-features"
             CHROME_FLAGS_HEADLESS: "--headless=new --remote-debugging-port=1234"
-            CHROME_FLAGS_WASM: "--enable-experimental-webassembly-features --js-flags=\"--experimental-wasm-memory64 --experimental-wasm-stack-switching --experimental-wasm-type-reflection\""
+            CHROME_FLAGS_WASM: "--enable-experimental-webassembly-features --js-flags=\"--experimental-wasm-stack-switching --experimental-wasm-type-reflection\""
             CHROME_FLAGS_NOCACHE: "--disk-cache-dir=/dev/null --disk-cache-size=1 --media-cache-size=1 --disable-application-cache --incognito"
           command: |
             export EMTEST_BROWSER="/usr/bin/google-chrome $CHROME_FLAGS_BASE $CHROME_FLAGS_HEADLESS $CHROME_FLAGS_WASM $CHROME_FLAGS_NOCACHE"
@@ -402,7 +402,7 @@ commands:
             # this flag for now: https://crbug.com/638180
             CHROME_FLAGS_BASE: "--no-first-run -start-maximized --no-sandbox --use-gl=swiftshader --user-data-dir=/tmp/chrome-emscripten-profile"
             CHROME_FLAGS_HEADLESS: "--headless=new --remote-debugging-port=1234"
-            CHROME_FLAGS_WASM: "--enable-experimental-webassembly-features --js-flags=\"--experimental-wasm-memory64\""
+            CHROME_FLAGS_WASM: "--enable-experimental-webassembly-features"
             CHROME_FLAGS_NOCACHE: "--disk-cache-dir=/dev/null --disk-cache-size=1 --media-cache-size=1 --disable-application-cache --incognito"
           command: |
             export EMTEST_BROWSER="/usr/bin/google-chrome $CHROME_FLAGS_BASE $CHROME_FLAGS_HEADLESS $CHROME_FLAGS_WASM $CHROME_FLAGS_NOCACHE"

test/common.py

@@ -964,13 +964,11 @@ def require_wasm64(self):
       version = shared.get_node_version(nodejs)
       if version >= (23, 0, 0):
         self.js_engines = [nodejs]
-        self.node_args += shared.node_memory64_flags()
         return
 
     if config.V8_ENGINE and config.V8_ENGINE in self.js_engines:
       self.emcc_args.append('-sENVIRONMENT=shell')
       self.js_engines = [config.V8_ENGINE]
-      self.v8_args.append('--experimental-wasm-memory64')
       return
 
     if 'EMTEST_SKIP_WASM64' in os.environ:

tools/link.py

@@ -449,9 +449,7 @@ def check_human_readable_list(items):
 def make_js_executable(script):
   src = read_file(script)
   cmd = config.NODE_JS
-  if settings.MEMORY64 == 1:
-    cmd += shared.node_memory64_flags()
-  elif settings.WASM_BIGINT:
+  if settings.WASM_BIGINT:
     cmd += shared.node_bigint_flags(config.NODE_JS)
   if len(cmd) > 1 or not os.path.isabs(cmd[0]):
     # Using -S (--split-string) here means that arguments to the executable are

tools/shared.py

@@ -394,10 +394,6 @@ def node_reference_types_flags(nodejs):
     return []
 
 
-def node_memory64_flags():
-  return ['--experimental-wasm-memory64']
-
-
 def node_exception_flags(nodejs):
   node_version = get_node_version(nodejs)
   # Exception handling was enabled by default in node v17.