[llvm] [AArch64] Set MaxInterleaving to 4 for Neoverse V2 (PR #100385)

Wed Jul 24 09:08:05 PDT 2024

sjoerdmeijer wrote:

Here are the RAJAPerf numbers:

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Kernel | after / before
-- | --
Basic_INIT_VIEW1D | 0.66
Basic_INIT_VIEW1D_OFFSET | 0.70
Basic_NESTED_INIT | 0.89
Basic_REDUCE3_INT | 0.89
Polybench_JACOBI_2D | 0.91
Polybench_FLOYD_WARSHALL | 0.92
Basic_MAT_MAT_SHARED | 0.94
Apps_FIR | 0.94
… | …
Basic_MULADDSUB | 1.25

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There is 1 regression, which I did not spot before; not sure if it is noise or something else, but let's assume it is real. The geomean number is 0.984, so an overall 1.5% improvement.

TODO:
- double check the LLVM test-suite,
- and I will add SPEC FP to the mix.

https://github.com/llvm/llvm-project/pull/100385