[llvm] [AArch64][GISel] Fold G_SHL used by multiple G_PTR_ADD into load/store addressing mode (PR #96603)

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Fri Jun 28 03:29:55 PDT 2024

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Him188 wrote:

@davemgreen I have included one .ll test, part of which is copied from SDAG `aarch64-fold-lslfast.ll`. Also added MIR tests for s128 and stores.


https://github.com/llvm/llvm-project/pull/96603

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