Revert of revert r25736

src/compiler/pipeline.cc

Index: src/compiler/pipeline.cc
diff --git a/src/compiler/pipeline.cc b/src/compiler/pipeline.cc
index 7d967c34b878320babb9ad5f8a77c1ecfa50bb7c..5515babdcaa5465c22cdb80ebe0bec31c3a63575 100644
--- a/src/compiler/pipeline.cc
+++ b/src/compiler/pipeline.cc
@@ -585,6 +585,15 @@
 };
 
 
+struct CommitAssignmentPhase {
+  static const char* phase_name() { return "commit assignment"; }
+
+  void Run(PipelineData* data, Zone* temp_zone) {
+    data->register_allocator()->CommitAssignment();
+  }
+};
+
+
 struct PopulatePointerMapsPhase {
   static const char* phase_name() { return "populate pointer maps"; }
 
@@ -1036,6 +1045,7 @@
   if (FLAG_turbo_reuse_spill_slots) {
     Run<ReuseSpillSlotsPhase>();
   }
+  Run<CommitAssignmentPhase>();
   Run<PopulatePointerMapsPhase>();
   Run<ConnectRangesPhase>();
   Run<ResolveControlFlowPhase>();