[turbofan] Run EarlyOptimizationPhase after we nuked the types.

It's not safe to look at the types after SimplifiedLowering runs,
as the types are unreliable by that time. So better make sure we
nuke the types first.

R=jarin@chromium.org

Review-Url: https://codereview.chromium.org/2032613006
Cr-Commit-Position: refs/heads/master@{#36671}

src/compiler/pipeline.cc

@@ -1417,10 +1417,6 @@ bool PipelineImpl::CreateGraph() {
     // Select representations.
     Run<RepresentationSelectionPhase>();
     RunPrintAndVerify("Representations selected");
-
-    // Run early optimization pass.
-    Run<EarlyOptimizationPhase>();
-    RunPrintAndVerify("Early optimized", true);
   }
 
 #ifdef DEBUG
@@ -1440,6 +1436,10 @@ bool PipelineImpl::CreateGraph() {
   RunPrintAndVerify("Untyped", true);
 #endif
 
+  // Run early optimization pass.
+  Run<EarlyOptimizationPhase>();
+  RunPrintAndVerify("Early optimized", true);
+
   data->EndPhaseKind();
 
   return true;