[turbofan] Improve memory consumption for state values descriptors.

src/compiler/instruction-selector.h

Index: src/compiler/instruction-selector.h
diff --git a/src/compiler/instruction-selector.h b/src/compiler/instruction-selector.h
index 721348db80d2c1bce261653d0c7a70a91f3953f2..4e3f546c77d658396012243138a445160d7eca48 100644
--- a/src/compiler/instruction-selector.h
+++ b/src/compiler/instruction-selector.h
@@ -26,6 +26,7 @@ class FlagsContinuation;
 class Linkage;
 class OperandGenerator;
 struct SwitchInfo;
+class StateObjectDeduplicator;
 
 // This struct connects nodes of parameters which are going to be pushed on the
 // call stack with their parameter index in the call descriptor of the callee.
@@ -42,6 +43,8 @@ class PushParameter {
   MachineType type_;
 };
 
+enum class FrameStateInputKind { kAny, kStackSlot };
+
 // Instruction selection generates an InstructionSequence for a given Schedule.
 class V8_EXPORT_PRIVATE InstructionSelector final {
  public:
@@ -286,6 +289,17 @@ class V8_EXPORT_PRIVATE InstructionSelector final {
   int GetTempsCountForTailCallFromJSFunction();
 
   FrameStateDescriptor* GetFrameStateDescriptor(Node* node);
+  size_t AddInputsToFrameStateDescriptor(FrameStateDescriptor* descriptor,
+                                         Node* state, OperandGenerator* g,
+                                         StateObjectDeduplicator* deduplicator,
+                                         InstructionOperandVector* inputs,
+                                         FrameStateInputKind kind, Zone* zone);
+  size_t AddOperandToStateValueDescriptor(StateValueList* values,
+                                          InstructionOperandVector* inputs,
+                                          OperandGenerator* g,
+                                          StateObjectDeduplicator* deduplicator,
+                                          Node* input, MachineType type,
+                                          FrameStateInputKind kind, Zone* zone);
 
   // ===========================================================================
   // ============= Architecture-specific graph covering methods. ===============