Revert of [ignition/turbo] Perform liveness analysis on the bytecodes

src/compiler/bytecode-graph-builder.h

Index: src/compiler/bytecode-graph-builder.h
diff --git a/src/compiler/bytecode-graph-builder.h b/src/compiler/bytecode-graph-builder.h
index 1a39ee05f221e919fdfd487f9620e7faa1e170de..f26ab210e8ce259e930ae587cb85f8582bd0455a 100644
--- a/src/compiler/bytecode-graph-builder.h
+++ b/src/compiler/bytecode-graph-builder.h
@@ -134,6 +134,10 @@
   // to the given node and the output value produced by the node is combined.
   // Conceptually this frame state is "after" a given operation.
   void PrepareFrameState(Node* node, OutputFrameStateCombine combine);
+
+  // Computes register liveness and replaces dead ones in frame states with the
+  // undefined values.
+  void ClearNonLiveSlotsInFrameStates();
 
   void BuildCreateArguments(CreateArgumentsType type);
   Node* BuildLoadGlobal(Handle<Name> name, uint32_t feedback_slot_index,
@@ -256,6 +260,8 @@
     bytecode_analysis_ = bytecode_analysis;
   }
 
+  LivenessAnalyzer* liveness_analyzer() { return &liveness_analyzer_; }
+
   bool IsLivenessAnalysisEnabled() const {
     return this->is_liveness_analysis_enabled_;
   }
@@ -301,6 +307,9 @@
 
   StateValuesCache state_values_cache_;
 
+  // Analyzer of register liveness.
+  LivenessAnalyzer liveness_analyzer_;
+
   // The Turbofan source position table, to be populated.
   SourcePositionTable* source_positions_;