Bug 1062869 part 4 - Add an invalidate function to IonScript. r=h4writer

js/src/jit/Ion.cpp

@@ -2900,6 +2900,17 @@ jit::Invalidate(JSContext *cx, const Vector<types::RecompileInfo> &invalid, bool
                     cancelOffThread);
 }
 
+bool
+jit::IonScript::invalidate(JSContext *cx, bool resetUses, const char *reason)
+{
+    JitSpew(JitSpew_IonInvalidate, " Invalidate IonScript %p: %s", this, reason);
+    Vector<types::RecompileInfo> list(cx);
+    if (!list.append(recompileInfo()))
+        return false;
+    Invalidate(cx, list, resetUses, true);
+    return true;
+}
+
 bool
 jit::Invalidate(JSContext *cx, JSScript *script, ExecutionMode mode, bool resetUses,
                 bool cancelOffThread)

js/src/jit/IonCode.h

@@ -581,6 +581,10 @@ struct IonScript
     bool invalidated() const {
         return refcount_ != 0;
     }
+
+    // Invalidate the current compilation.
+    bool invalidate(JSContext *cx, bool resetUses, const char *reason);
+
     size_t refcount() const {
         return refcount_;
     }