[turbofan]: delay ssa deconstruction in register allocator

src/compiler/pipeline.cc

Index: src/compiler/pipeline.cc
diff --git a/src/compiler/pipeline.cc b/src/compiler/pipeline.cc
index 4c767019921842f232b2bb8045960beb0629857e..c83a149b0d63f2235b94300a62d3b6d773a63c01 100644
--- a/src/compiler/pipeline.cc
+++ b/src/compiler/pipeline.cc
@@ -506,15 +506,6 @@ struct MeetRegisterConstraintsPhase {
 };
 
 
-struct ResolvePhisPhase {
-  static const char* phase_name() { return "resolve phis"; }
-
-  void Run(PipelineData* data, Zone* temp_zone) {
-    data->register_allocator()->ResolvePhis();
-  }
-};
-
-
 struct BuildLiveRangesPhase {
   static const char* phase_name() { return "build live ranges"; }
 
@@ -926,7 +917,6 @@ void Pipeline::AllocateRegisters(const RegisterConfiguration* config,
                                     debug_name.get());
 
   Run<MeetRegisterConstraintsPhase>();
-  Run<ResolvePhisPhase>();
   Run<BuildLiveRangesPhase>();
   if (FLAG_trace_turbo) {
     OFStream os(stdout);