Compile code in the macro definition and remove interpreter

The only interpreted code remaining is a call to a static method
containg a lambda which can compute the resulting inlined quoted
expression. Arguments to the macro are trivially computed from the
inlined call and bindings.

Author: nicolasstucki

compiler/src/dotty/tools/dotc/interpreter/Interpreter.scala

@@ -231,7 +231,9 @@ class PostTyper extends MacroTransform with IdentityDenotTransformer { thisPhase
           //     be duplicated
           //  2. To enable correct pickling (calls can share symbols with the inlined code, which
           //     would trigger an assertion when pickling).
-          val callTrace = Ident(call.symbol.topLevelClass.typeRef).withPos(call.pos)
+          val callTrace =
+            if (call.symbol.is(Macro)) call
+            else Ident(call.symbol.topLevelClass.typeRef).withPos(call.pos)
           cpy.Inlined(tree)(callTrace, transformSub(bindings), transform(expansion))
         case tree: Template =>
           withNoCheckNews(tree.parents.flatMap(newPart)) {