tor-browser

commit 7055f54278ad8aad10e659d19dce90df88e572ef
parent 0db3a0b21063aaefbc6c0db4f17774f5372cc478
Author: Ryan Hunt <rhunt@eqrion.net>
Date:   Thu, 18 Dec 2025 14:55:07 +0000

Bug 2002635 - Disable asm.js. r=bvisness

Differential Revision: https://phabricator.services.mozilla.com/D275817

Diffstat:
M
js/src/jit-test/tests/asm.js/directives.txt
 | 
2
+-
M
js/src/jit-test/tests/debug/Object-createSource-forceEnableAsmJS.js
 | 
2
+-
M
js/src/shell/js.cpp
 | 
4
++--
M
js/src/tests/lib/tests.py
 | 
1
-
M
modules/libpref/init/StaticPrefList.yaml
 | 
2
+-

5 files changed, 5 insertions(+), 6 deletions(-)
diff --git a/js/src/jit-test/tests/asm.js/directives.txt b/js/src/jit-test/tests/asm.js/directives.txt
@@ -1 +1 @@
-|jit-test| test-also=--no-asmjs; test-also=--disable-wasm-huge-memory; skip-variant-if: --disable-wasm-huge-memory, !wasmHugeMemorySupported(); 
+|jit-test| test-also=--asmjs; test-also=--disable-wasm-huge-memory; skip-variant-if: --disable-wasm-huge-memory, !wasmHugeMemorySupported();
diff --git a/js/src/jit-test/tests/debug/Object-createSource-forceEnableAsmJS.js b/js/src/jit-test/tests/debug/Object-createSource-forceEnableAsmJS.js
@@ -1,4 +1,4 @@
-// |jit-test| skip-if: !wasmDebuggingEnabled()
+// |jit-test| --asmjs; skip-if: !wasmDebuggingEnabled()
 
 gczeal(0);
 
diff --git a/js/src/shell/js.cpp b/js/src/shell/js.cpp
@@ -12958,7 +12958,7 @@ bool InitOptionParser(OptionParser& op) {
                        -1) ||
       !op.addBoolOption('\0', "only-inline-selfhosted",
                         "Only inline selfhosted functions") ||
-      !op.addBoolOption('\0', "no-asmjs", "Disable asm.js compilation") ||
+      !op.addBoolOption('\0', "asmjs", "Enable asm.js compilation") ||
       !op.addStringOption(
           '\0', "wasm-compiler", "[option]",
           "Choose to enable a subset of the wasm compilers, valid options are "
@@ -13756,7 +13756,7 @@ bool SetContextOptions(JSContext* cx, const OptionParser& op) {
 }
 
 bool SetContextWasmOptions(JSContext* cx, const OptionParser& op) {
-  enableAsmJS = !op.getBoolOption("no-asmjs");
+  enableAsmJS = op.getBoolOption("asmjs");
 
   enableWasm = true;
   enableWasmBaseline = true;
diff --git a/js/src/tests/lib/tests.py b/js/src/tests/lib/tests.py
@@ -76,7 +76,6 @@ JITFLAGS = {
         [
             "--no-blinterp",
             "--no-baseline",
-            "--no-asmjs",
             "--wasm-compiler=none",
             "--no-native-regexp",
         ]
diff --git a/modules/libpref/init/StaticPrefList.yaml b/modules/libpref/init/StaticPrefList.yaml
@@ -9521,7 +9521,7 @@
 # asm.js
 - name: javascript.options.asmjs
   type: bool
-  value: true
+  value: false
   mirror: always
 
 # Whether to throw a TypeError if asm.js code hits validation failure.