Cache name for dummy argument used in implicit search

This avoids a minor inefficiency of interning the name on
each implicit candidate. Instead, we follow the usual practice
and use a pre-baked name from `StdNames`.

1 files changed, 1 insertions, 0 deletions

diff --git a/src/reflect/scala/reflect/internal/StdNames.scala b/src/reflect/scala/reflect/internal/StdNames.scala
index f32b7326fe..c0562b0679 100644
--- a/src/reflect/scala/reflect/internal/StdNames.scala
+++ b/src/reflect/scala/reflect/internal/StdNames.scala
@@ -1078,6 +1078,7 @@ trait StdNames {
     val reflPolyCacheName: NameType   = "reflPoly$Cache"
     val reflParamsCacheName: NameType = "reflParams$Cache"
     val reflMethodName: NameType      = "reflMethod$Method"
+    val argument: NameType            = "<argument>"
 
   }