Initial tree-shaking for precompilation: only selective compilation, no removal of unused Functions…

runtime/vm/compiler.cc

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include "vm/compiler.h"
 
 #include "vm/assembler.h"
 
 #include "vm/ast_printer.h"
 #include "vm/block_scheduler.h"
@@ skipping 1094 matching lines @@
 }
 
 
 RawError* Compiler::CompileFunction(Thread* thread,
                                     const Function& function) {
   Isolate* isolate = thread->isolate();
   VMTagScope tagScope(isolate, VMTag::kCompileUnoptimizedTagId);
   TIMELINE_FUNCTION_COMPILATION_DURATION(isolate, "Function", function);
 
   if (!isolate->compilation_allowed()) {
-    FATAL2("Precompilation missed function %s (%s)\n",
-           function.ToQualifiedCString(),
+    FATAL3("Precompilation missed function %s (%" Pd ", %s)\n",
+           function.ToLibNamePrefixedQualifiedCString(),
+           function.token_pos(),
            Function::KindToCString(function.kind()));
   }
 
   CompilationPipeline* pipeline =
       CompilationPipeline::New(thread->zone(), function);
 
   const bool optimized =
       Compiler::always_optimize() && function.IsOptimizable();
 
   return CompileFunctionHelper(pipeline, function, optimized,
@@ skipping 286 matching lines @@
     const Object& result =
       PassiveObject::Handle(isolate->object_store()->sticky_error());
     isolate->object_store()->clear_sticky_error();
     return result.raw();
   }
   UNREACHABLE();
   return Object::null();
 }
 
 }  // namespace dart