[llvm] [RISCV] Fuse QC_E_LI to Loads/Store (PR #208134)

[Sam Elliott via llvm-commits]

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lenary wrote:

I find the `WildcardTrue` stuff confusing because it relates to the produced function rather than the semantics of a specific fusion itself. Beyond that, the tablegen seems fine?

https://github.com/llvm/llvm-project/pull/208134