[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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+; RUN: opt -S -enable-merge-func2 -passes=mergefunc-ignoring-const %s -o - | FileCheck %s
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manman-ren wrote:

It is defined and is renamed in the followup patch.

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