Bug 1643273 - Disable consistency check for Opcodes.h in SM(nu) job. r=jandem

Differential Revision: https://phabricator.services.mozilla.com/D78245

js/src/devtools/automation/variants/nonunified

@@ -1,6 +1,9 @@
 {
     "configure-args": "--enable-warnings-as-errors --enable-rust-simd",
     "debug": true,
+    "env": {
+        "JS_SMOOSH_DISABLE_OPCODE_CHECK": "1"
+    },
     "conditional-configure-args": {
         "linux64": "--enable-smoosh"
     },

js/src/frontend/smoosh/build.rs

@@ -6,13 +6,20 @@ fn compare(name: &str, orig: &str, copied: &str) {
             "{} is out of sync. \
                 It's possible that the bytecode generated by jsparagus is \
                 based on older opcodes. Please run \
-                crates/emitter/scripts/update_opcodes.py in jsparagus.",
+                update_stencil.py in jsparagus. \
+                You can disable this check by setting \
+                JS_SMOOSH_DISABLE_OPCODE_CHECK environment variable.",
             name
         );
     }
 }
 
 fn main() {
+    match std::env::var("JS_SMOOSH_DISABLE_OPCODE_CHECK") {
+        Ok(_) => { return; },
+        Err(_) => {}
+    };
+
     compare(
         "Opcodes.h",
         include_str!("../../vm/Opcodes.h"),