Bug 1673497: Part 2: Cancel off-thread compiles when invalidating Warp r=jandem

Depends on D94875

Differential Revision: https://phabricator.services.mozilla.com/D94876

js/src/jit-test/tests/warp/cancel-offthread-compile.js

@@ -0,0 +1,21 @@
+// |jit-test| --fast-warmup; skip-if: helperThreadCount() === 0
+
+function foo(o) {
+    return o.y;
+}
+
+with ({}) {}
+
+var sum = 0;
+
+// Trigger an off-thread Warp compile.
+for (var i = 0; i < 30; i++) {
+    sum += foo({y: 1});
+}
+
+// Attach a new stub and cancel that compile.
+for (var i = 0; i < 30; i++) {
+    sum += foo({x: 1, y: 1});
+}
+
+assertEq(sum, 60);

js/src/jit/BaselineIC.cpp

@@ -640,6 +640,8 @@ void ICFallbackStub::maybeInvalidateWarp(JSContext* cx, JSScript* script) {
 
   if (script->hasIonScript()) {
     Invalidate(cx, script);
+  } else {
+    CancelOffThreadIonCompile(script);
   }
 }