Logging cleanup.

Reduced the amount of extraneous logging noise at the
default logging level.

Was brought to my usual crashing halt by the discovery of identical
logging statements throughout GenASM and elsewhere. I'm supposing
the reason people so grossly underestimate the cost of such duplication
is that most of the effects are in things which don't happen, aka
"silent evidence".

An example of a thing which isn't happening is the remainder of
this commit, which exists only in parallel universes.

1 files changed, 9 insertions, 2 deletions

diff --git a/src/reflect/scala/reflect/internal/Symbols.scala b/src/reflect/scala/reflect/internal/Symbols.scala
index a8efa938c8..d3a0ffb744 100644
--- a/src/reflect/scala/reflect/internal/Symbols.scala
+++ b/src/reflect/scala/reflect/internal/Symbols.scala
@@ -147,7 +147,7 @@ trait Symbols extends api.Symbols { self: SymbolTable =>
     def name: NameType
     def name_=(n: Name): Unit = {
       if (shouldLogAtThisPhase) {
-        val msg = s"Renaming $fullLocationString to $n"
+        def msg = s"In $owner, renaming $name -> $n"
         if (isSpecialized) debuglog(msg) else log(msg)
       }
     }
@@ -2524,7 +2524,14 @@ trait Symbols extends api.Symbols { self: SymbolTable =>
     }
 
     def infosString = infos.toString
-    def debugLocationString = fullLocationString + " (flags: " + debugFlagString + ")"
+    def debugLocationString = {
+      val pre = flagString match {
+        case ""                  => ""
+        case s if s contains ' ' => "(" + s + ") "
+        case s                   => s + " "
+      }
+      pre + fullLocationString
+    }
 
     private def defStringCompose(infoString: String) = compose(
       flagString,