Allow --always-opt to go further into the pipeline (2).

src/compiler/pipeline.cc

Index: src/compiler/pipeline.cc
diff --git a/src/compiler/pipeline.cc b/src/compiler/pipeline.cc
index 70de7fb0efed28ef7d30f20680f018ad91fb7b9c..eb9ed4c26828a6705d25242da1ad3bd09cddb9a9 100644
--- a/src/compiler/pipeline.cc
+++ b/src/compiler/pipeline.cc
@@ -8,6 +8,7 @@
 #include <sstream>
 
 #include "src/base/platform/elapsed-timer.h"
+#include "src/bootstrapper.h"  // TODO(mstarzinger): Only temporary.
 #include "src/compiler/ast-graph-builder.h"
 #include "src/compiler/ast-loop-assignment-analyzer.h"
 #include "src/compiler/basic-block-instrumentor.h"
@@ -754,6 +755,11 @@ Handle<Code> Pipeline::GenerateCode() {
   // TODO(turbofan): Make OSR work with inner loops and remove this bailout.
   if (info()->is_osr() && !FLAG_turbo_osr) return Handle<Code>::null();
 
+  // TODO(mstarzinger): This is just a temporary hack to make TurboFan work,
+  // the correct solution is to restore the context register after invoking
+  // builtins from full-codegen.
+  if (isolate()->bootstrapper()->IsActive()) return Handle<Code>::null();
+
   ZonePool zone_pool(isolate());
   SmartPointer<PipelineStatistics> pipeline_statistics;