Bug 1377007 - Adding a SpiderMonkey compilation flag for BinAST;r=ted

MozReview-Commit-ID: qJ6SY8YlQ2

--HG--
extra : rebase_source : 7aedde8309069cdaa2f9626b2c6a118626a3ed1b

js/moz.configure

@@ -408,3 +408,17 @@ def enable_pipeline_operator(value):
 
 set_config('ENABLE_PIPELINE_OPERATOR', enable_pipeline_operator)
 set_define('ENABLE_PIPELINE_OPERATOR', enable_pipeline_operator)
+
+
+
+# Experimental support for BinAST
+# ==============================================================
+
+@depends(target, milestone)
+def enable_build_binast(target, milestone):
+    # For reasons unknown at this time, BinAST causes timeouts on win32.
+    if milestone.is_nightly and not (target.kernel == 'WINNT' and target.cpu == 'x86'):
+        return True
+
+set_define('JS_BUILD_BINAST', enable_build_binast)
+set_config('JS_BUILD_BINAST', enable_build_binast)