From 890bb438b000821586c076ed8f880e95ea03f075 Mon Sep 17 00:00:00 2001
From: wolfbeast <mcwerewolf@wolfbeast.com>
Date: Thu, 21 Mar 2019 09:53:24 +0100
Subject: Pref the use of unboxed plain objects in JS and disable by default.

This should be all that's needed for #1017, but verification of
impact is definitely desired.
---
 js/src/jsapi.cpp | 3 +++
 1 file changed, 3 insertions(+)

(limited to 'js/src/jsapi.cpp')

diff --git a/js/src/jsapi.cpp b/js/src/jsapi.cpp
index 37d023bd4..6114b8157 100644
--- a/js/src/jsapi.cpp
+++ b/js/src/jsapi.cpp
@@ -6410,6 +6410,9 @@ JS_SetGlobalJitCompilerOption(JSContext* cx, JSJitCompilerOption opt, uint32_t v
         }
         jit::JitOptions.jumpThreshold = value;
         break;
+      case JSJITCOMPILER_UNBOXED_OBJECTS:
+        jit::JitOptions.disableUnboxedObjects = !value;
+        break;
       case JSJITCOMPILER_ASMJS_ATOMICS_ENABLE:
         jit::JitOptions.asmJSAtomicsEnable = !!value;
         break;
-- 
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