[llvm] Port Swift's merge function pass to llvm: merging functions that differ in constants (PR #68235)

[Manman Ren via llvm-commits]

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@@ -0,0 +1,58 @@
+//===- FunctionComparatorIgnoringConst.h - Function Comparator --*- C++ -*-===//
+//
+// 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
+//
+//===----------------------------------------------------------------------===//
+//
+// This file defines the FunctionComparatorIgnoringConst class which is used by
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manman-ren wrote:

I think so.

https://github.com/llvm/llvm-project/pull/68235