From ff2377f03ee65cb500e5fb4d25cfcd6b3ecd49bd Mon Sep 17 00:00:00 2001
From: "A. Unique TensorFlower" <gardener@tensorflow.org>
Date: Mon, 25 Jan 2021 15:44:13 -0800
Subject: [PATCH] Remove the fingerprint() field from HloInstruction.

It is more flexible to cache fingerprints in a separate hash table.

PiperOrigin-RevId: 353746875
Change-Id: I33f3755a3dcb9e90949a1d186841b875a4c99fe4
---
 tensorflow/compiler/xla/service/hlo_instruction.h | 6 ------
 1 file changed, 6 deletions(-)

diff --git a/tensorflow/compiler/xla/service/hlo_instruction.h b/tensorflow/compiler/xla/service/hlo_instruction.h
index a78d41f686b..f27c7de7090 100644
--- a/tensorflow/compiler/xla/service/hlo_instruction.h
+++ b/tensorflow/compiler/xla/service/hlo_instruction.h
@@ -1349,9 +1349,6 @@ class HloInstruction {
       const HloPrintOptions& options,
       CanonicalNameMap* canonical_name_map) const;
 
-  const absl::optional<uint64>& fingerprint() const { return fingerprint_; }
-  void set_fingerprint(const uint64 fingerprint) { fingerprint_ = fingerprint; }
-
   // Returns a serialized representation of this instruction.
   virtual HloInstructionProto ToProto() const;
 
@@ -2059,9 +2056,6 @@ class HloInstruction {
   // HloInstruction.
   bool IsMarkedAsDead() const { return marked_as_dead_; }
 
-  // Fingerprint of this instruction alone.
-  absl::optional<uint64> fingerprint_;
-
   int unique_id_;  // Unique to this HloInstruction within a HloModule
 
   // Opcode for this instruction.