[llvm] [NFC][llvm-ir2vec] llvm_ir2vec.cpp breakup to extract a reusable header for IR2VecTool, and MIR2VecTool classes (PR #172304)

[S. VenkataKeerthy via llvm-commits]

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@@ -0,0 +1,534 @@
+//===- llvm-ir2vec.h - IR2Vec/MIR2Vec Tool Classes ----------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+///
+/// \file
+/// This file contains the IR2VecTool and MIR2VecTool class definitions and
+/// implementations for the llvm-ir2vec embedding generation tool.
+///
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_TOOLS_LLVM_IR2VEC_LLVM_MIR2VEC_H
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svkeerthy wrote:

Please see https://llvm.org/docs/CodingStandards.html#header-guard for header guard naming conventions.

https://github.com/llvm/llvm-project/pull/172304