[llvm] AMDGPU/PromoteAlloca: Simplify how deferred loads work (PR #170510)

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Nicolai =?utf-8?q?H=C3=A4hnle?= <nicolai.haehnle at amd.com>,
Nicolai =?utf-8?q?H=C3=A4hnle?= <nicolai.haehnle at amd.com>
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In-Reply-To: <llvm.org/llvm/llvm-project/pull/170510 at github.com>


https://github.com/zGoldthorpe approved this pull request.

LGTM, though 

https://github.com/llvm/llvm-project/pull/170510