Bug 1675385 - Move architecture-dependent wasm prefs to static prefs. r=lth

We preserve their value, but by moving them to static prefs, we make
them embedded into the binary portion of the build, which means it's
allowed to differ between x86_64 and aarch64 in mac universal builds.

Differential Revision: https://phabricator.services.mozilla.com/D96522

modules/libpref/init/StaticPrefList.yaml

@@ -5171,6 +5171,26 @@
   value: true
   mirror: once
 
+- name: javascript.options.wasm_optimizingjit
+  type: bool
+#if defined(MOZ_AARCH64) && !defined(ENABLE_WASM_CRANELIFT)
+  value: false
+#else
+  value: true
+#endif
+  mirror: always
+
+#if defined(ENABLE_WASM_SIMD)
+- name: javascript.options.wasm_simd
+  type: bool
+  #if defined(NIGHTLY_BUILD)
+  value: true
+  #else
+  value: false
+  #endif
+#endif
+  mirror: always
+
 #---------------------------------------------------------------------------
 # Prefs starting with "layers."
 #---------------------------------------------------------------------------

modules/libpref/init/all.js

@@ -1108,12 +1108,6 @@ pref("javascript.options.wasm_trustedprincipals", true);
 pref("javascript.options.wasm_verbose",           false);
 pref("javascript.options.wasm_baselinejit",       true);
 
-#if defined(MOZ_AARCH64) && !defined(ENABLE_WASM_CRANELIFT)
-  pref("javascript.options.wasm_optimizingjit",   false);
-#else
-  pref("javascript.options.wasm_optimizingjit",   true);
-#endif
-
 #ifdef ENABLE_WASM_REFTYPES
   pref("javascript.options.wasm_reftypes",        true);
   pref("javascript.options.wasm_gc",              false);
@@ -1121,13 +1115,6 @@ pref("javascript.options.wasm_baselinejit",       true);
 #ifdef ENABLE_WASM_MULTI_VALUE
   pref("javascript.options.wasm_multi_value",     true);
 #endif
-#ifdef ENABLE_WASM_SIMD
-  #ifdef NIGHTLY_BUILD
-    pref("javascript.options.wasm_simd",            true);
-  #else
-    pref("javascript.options.wasm_simd",            false);
-  #endif
-#endif
 pref("javascript.options.native_regexp",    true);
 pref("javascript.options.parallel_parsing", true);
 pref("javascript.options.source_pragmas",    true);

modules/libpref/init/generate_static_pref_list.py

@@ -373,6 +373,9 @@ def emit_code(fd, pref_list_filename):
     if buildconfig.substs.get("MOZ_DEBUG"):
         pp.context["DEBUG"] = "1"
 
+    if buildconfig.substs.get("CPU_ARCH") == "aarch64":
+        pp.context["MOZ_AARCH64"] = True
+
     pp.out = StringIO()
     pp.do_filter("substitution")
     pp.do_include(pref_list_filename)

modules/libpref/moz.build

@@ -153,9 +153,6 @@ if CONFIG["MOZ_SERVICES_SYNC"]:
 if CONFIG["MOZ_BUILD_APP"] == "browser":
     DEFINES["MOZ_BUILD_APP_IS_BROWSER"] = True
 
-if CONFIG["CPU_ARCH"] == "aarch64":
-    DEFINES["MOZ_AARCH64"] = True
-
 if CONFIG["MOZ_WIDGET_TOOLKIT"] == "android":
     if not CONFIG["MOZ_ANDROID_FAT_AAR_ARCHITECTURES"]:
         FINAL_TARGET_PP_FILES[CONFIG["ANDROID_CPU_ARCH"]] += [