Added -Xlog-implicit-conversions.

New command line option prints a message whenever the compiler
inserts an implicit conversion.  Implicit parameters are not
under consideration here, since the primary motivation is to make
it easy to inspect your code for unintentional conversions, since
they can have dramatic performance implications.

  class A {
    def f(xs: Array[Byte]) = xs.size
    def g(xs: Array[Byte]) = xs.length
  }
  % scalac -Xlog-implicit-conversions logImplicits.scala
  logImplicits.scala:2: applied implicit conversion from xs.type to ?{val size: ?} = implicit def byteArrayOps(xs: Array[Byte]): scala.collection.mutable.ArrayOps[Byte]
    def f(xs: Array[Byte]) = xs.size
                             ^

1 files changed, 2 insertions, 2 deletions

diff --git a/src/compiler/scala/tools/nsc/CompileServer.scala b/src/compiler/scala/tools/nsc/CompileServer.scala
index b10ac78ac7..6393ade146 100644
--- a/src/compiler/scala/tools/nsc/CompileServer.scala
+++ b/src/compiler/scala/tools/nsc/CompileServer.scala
@@ -136,9 +136,9 @@ class StandardCompileServer extends SocketServer {
     }
 
     if (command.shouldStopWithInfo)
-      reporter.info(null, command.getInfoMessage(newGlobal(newSettings, reporter)), true)
+      reporter.echo(command.getInfoMessage(newGlobal(newSettings, reporter)))
     else if (command.files.isEmpty)
-      reporter.info(null, command.usageMsg, true)
+      reporter.echo(command.usageMsg)
     else {
       if (isCompilerReusable) {
         info("[Reusing existing Global instance.]")