[llvm] [AMDGPU][LTO] Introduce AMDGPUCloneModuleLDS (PR #89683)

[Anshil Gandhi via llvm-commits]

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+; RUN: opt -passes=amdgpu-clone-module-lds %s -S | FileCheck %s
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gandhi56 wrote:

@Pierre-vh sure? This patch only clones globals and functions. I tried #89245 without this patch on the below tests - the tests appear to fail when run in a batch even though they pass when they run independently. I observed the same pattern with the target independent SplitModule implementation.

https://github.com/llvm/llvm-project/pull/89683