gistfile1.txt

diff --git a/js/src/vm/ForkJoin.cpp b/js/src/vm/ForkJoin.cpp
index 2f9a1a2..e80620a 100644
--- a/js/src/vm/ForkJoin.cpp
+++ b/js/src/vm/ForkJoin.cpp
@@ -1127,6 +1127,21 @@ js::ParallelDo::invalidateBailedOutScripts()
     return true;
 }
 
+struct AutoSetEagerBaseline
+{
+    uint32_t old;
+
+    AutoSetEagerBaseline()
+      : old(ion::js_IonOptions.baselineUsesBeforeCompile)
+    {
+        ion::js_IonOptions.baselineUsesBeforeCompile = 0;
+    }
+
+    ~AutoSetEagerBaseline() {
+        ion::js_IonOptions.baselineUsesBeforeCompile = old;
+    }
+};
+
 js::ParallelDo::TrafficLight
 js::ParallelDo::warmupExecution(bool stopIfComplete,
                                 ExecutionStatus *status)
@@ -1136,6 +1151,8 @@ js::ParallelDo::warmupExecution(bool stopIfComplete,
 
     Spew(SpewOps, "Executing warmup.");
 
+    AutoSetEagerBaseline goddammit;
+
     AutoEnterWarmup warmup(cx_->runtime());
     RootedValue funVal(cx_, ObjectValue(*fun_));
     bool complete;