Merge pull request #2205 from JamesIry/master_deoptimize

Add option to disable optimization

1 files changed, 2 insertions, 0 deletions

diff --git a/src/compiler/scala/tools/nsc/settings/ScalaSettings.scala b/src/compiler/scala/tools/nsc/settings/ScalaSettings.scala
index 2c9c20666d..702071f906 100644
--- a/src/compiler/scala/tools/nsc/settings/ScalaSettings.scala
+++ b/src/compiler/scala/tools/nsc/settings/ScalaSettings.scala
@@ -43,6 +43,7 @@ trait ScalaSettings extends AbsScalaSettings
   /** Internal use - syntax enhancements. */
   private class EnableSettings[T <: BooleanSetting](val s: T) {
     def enabling(toEnable: List[BooleanSetting]): s.type = s withPostSetHook (_ => toEnable foreach (_.value = s.value))
+    def disabling(toDisable: List[BooleanSetting]): s.type = s withPostSetHook (_ => toDisable foreach (_.value = !s.value))
     def andThen(f: s.T => Unit): s.type                  = s withPostSetHook (setting => f(setting.value))
   }
   private implicit def installEnableSettings[T <: BooleanSetting](s: T) = new EnableSettings(s)
@@ -194,6 +195,7 @@ trait ScalaSettings extends AbsScalaSettings
    */
   val future        = BooleanSetting("-Xfuture", "Turn on future language features.") enabling futureSettings
   val optimise      = BooleanSetting("-optimise", "Generates faster bytecode by applying optimisations to the program") withAbbreviation "-optimize" enabling optimiseSettings
+  val nooptimise    = BooleanSetting("-Ynooptimise", "Clears all the flags set by -optimise. Useful for testing optimizations in isolation.") withAbbreviation "-Ynooptimize" disabling optimise::optimiseSettings
   val Xexperimental = BooleanSetting("-Xexperimental", "Enable experimental extensions.") enabling experimentalSettings
 
   // Feature extensions