[llvm] [AMDGPU][Offload] Enable memory manager use for up to ~3GB allocation size in omp_target_alloc (PR #151882)

[Joseph Huber via llvm-commits]

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+// clang-format off
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jhuber6 wrote:

Yeah, the formatting affects the OpenMP files for some reason, never looked into why.

https://github.com/llvm/llvm-project/pull/151882