[llvm] [GVN] Load-store forwaring of scalable store to fixed load. (PR #124748)

[David Green via llvm-commits]

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davemgreen wrote:

Different types might be useful too. For example a scalable_store_to_fixed_load with `<vscale x 4 x float>` input but `<vscale x 4 x i32>` output for example.

https://github.com/llvm/llvm-project/pull/124748