1 files changed, 9 insertions, 0 deletions
diff --git a/js/src/shell/js.cpp b/js/src/shell/js.cpp
index 4b0c858a4..8cd821b31 100644
--- a/js/src/shell/js.cpp
+++ b/js/src/shell/js.cpp
@@ -317,6 +317,7 @@ static bool enableIon = false;
 static bool enableAsmJS = false;
 static bool enableWasm = false;
 static bool enableNativeRegExp = false;
+static bool enableUnboxedArrays = false;
 static bool enableSharedMemory = SHARED_MEMORY_DEFAULT;
 static bool enableWasmAlwaysBaseline = false;
 static bool enableArrayProtoValues = true;
@@ -7262,6 +7263,7 @@ SetContextOptions(JSContext* cx, const OptionParser& op)
     enableAsmJS = !op.getBoolOption("no-asmjs");
     enableWasm = !op.getBoolOption("no-wasm");
     enableNativeRegExp = !op.getBoolOption("no-native-regexp");
+    enableUnboxedArrays = op.getBoolOption("unboxed-arrays");
     enableWasmAlwaysBaseline = op.getBoolOption("wasm-always-baseline");
     enableArrayProtoValues = !op.getBoolOption("no-array-proto-values");
 
@@ -7271,11 +7273,15 @@ SetContextOptions(JSContext* cx, const OptionParser& op)
                              .setWasm(enableWasm)
                              .setWasmAlwaysBaseline(enableWasmAlwaysBaseline)
                              .setNativeRegExp(enableNativeRegExp)
+                             .setUnboxedArrays(enableUnboxedArrays)
                              .setArrayProtoValues(enableArrayProtoValues);
 
     if (op.getBoolOption("wasm-check-bce"))
         jit::JitOptions.wasmAlwaysCheckBounds = true;
 
+    if (op.getBoolOption("no-unboxed-objects"))
+        jit::JitOptions.disableUnboxedObjects = true;
+
     if (const char* str = op.getStringOption("cache-ir-stubs")) {
         if (strcmp(str, "on") == 0)
             jit::JitOptions.disableCacheIR = false;
@@ -7539,6 +7545,7 @@ SetWorkerContextOptions(JSContext* cx)
                              .setWasm(enableWasm)
                              .setWasmAlwaysBaseline(enableWasmAlwaysBaseline)
                              .setNativeRegExp(enableNativeRegExp)
+                             .setUnboxedArrays(enableUnboxedArrays)
                              .setArrayProtoValues(enableArrayProtoValues);
     cx->setOffthreadIonCompilationEnabled(offthreadCompilation);
     cx->profilingScripts = enableCodeCoverage || enableDisassemblyDumps;
@@ -7708,6 +7715,8 @@ main(int argc, char** argv, char** envp)
         || !op.addBoolOption('\0', "no-asmjs", "Disable asm.js compilation")
         || !op.addBoolOption('\0', "no-wasm", "Disable WebAssembly compilation")
         || !op.addBoolOption('\0', "no-native-regexp", "Disable native regexp compilation")
+        || !op.addBoolOption('\0', "no-unboxed-objects", "Disable creating unboxed plain objects")
+        || !op.addBoolOption('\0', "unboxed-arrays", "Allow creating unboxed arrays")
         || !op.addBoolOption('\0', "wasm-always-baseline", "Enable wasm baseline compiler when possible")
         || !op.addBoolOption('\0', "wasm-check-bce", "Always generate wasm bounds check, even redundant ones.")
         || !op.addBoolOption('\0', "no-array-proto-values", "Remove Array.prototype.values")