diff -r 000000000000 -r 6474c204b198 js/src/jit/ExecutionMode-inl.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/jit/ExecutionMode-inl.h	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,104 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
+ * vim: set ts=8 sts=4 et sw=4 tw=99:
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef jit_ExecutionMode_inl_h
+#define jit_ExecutionMode_inl_h
+
+#ifdef JS_ION
+
+#include "jit/CompileInfo.h"
+
+#include "jsscriptinlines.h"
+
+namespace js {
+namespace jit {
+
+static inline bool
+HasIonScript(JSScript *script, ExecutionMode cmode)
+{
+    switch (cmode) {
+      case SequentialExecution: return script->hasIonScript();
+      case ParallelExecution: return script->hasParallelIonScript();
+      default:;
+    }
+    MOZ_ASSUME_UNREACHABLE("No such execution mode");
+}
+
+static inline IonScript *
+GetIonScript(JSScript *script, ExecutionMode cmode)
+{
+    switch (cmode) {
+      case SequentialExecution: return script->maybeIonScript();
+      case ParallelExecution: return script->maybeParallelIonScript();
+      default:;
+    }
+    MOZ_ASSUME_UNREACHABLE("No such execution mode");
+}
+
+static inline void
+SetIonScript(JSScript *script, ExecutionMode cmode, IonScript *ionScript)
+{
+    switch (cmode) {
+      case SequentialExecution: script->setIonScript(ionScript); return;
+      case ParallelExecution: script->setParallelIonScript(ionScript); return;
+      default:;
+    }
+    MOZ_ASSUME_UNREACHABLE("No such execution mode");
+}
+
+static inline size_t
+OffsetOfIonInJSScript(ExecutionMode cmode)
+{
+    switch (cmode) {
+      case SequentialExecution: return JSScript::offsetOfIonScript();
+      case ParallelExecution: return JSScript::offsetOfParallelIonScript();
+      default:;
+    }
+    MOZ_ASSUME_UNREACHABLE("No such execution mode");
+}
+
+static inline bool
+CanIonCompile(JSScript *script, ExecutionMode cmode)
+{
+    switch (cmode) {
+      case SequentialExecution: return script->canIonCompile();
+      case ParallelExecution: return script->canParallelIonCompile();
+      case DefinitePropertiesAnalysis: return true;
+      case ArgumentsUsageAnalysis: return true;
+      default:;
+    }
+    MOZ_ASSUME_UNREACHABLE("No such execution mode");
+    return false;
+}
+
+static inline bool
+CompilingOffThread(JSScript *script, ExecutionMode cmode)
+{
+    switch (cmode) {
+      case SequentialExecution: return script->isIonCompilingOffThread();
+      case ParallelExecution: return script->isParallelIonCompilingOffThread();
+      default:;
+    }
+    MOZ_ASSUME_UNREACHABLE("No such execution mode");
+}
+
+static inline bool
+CompilingOffThread(HandleScript script, ExecutionMode cmode)
+{
+    switch (cmode) {
+      case SequentialExecution: return script->isIonCompilingOffThread();
+      case ParallelExecution: return script->isParallelIonCompilingOffThread();
+      default:;
+    }
+    MOZ_ASSUME_UNREACHABLE("No such execution mode");
+}
+
+} // namespace jit
+} // namespace js
+
+#endif  // JS_ION
+
+#endif /* jit_ExecutionMode_inl_h */