Hongren Zheng 7c104b63c7 [mlir] Introduce OpAsmAttrInterface for pretty-print (#124721) ...

See
https://discourse.llvm.org/t/rfc-introduce-opasm-type-attr-interface-for-pretty-print-in-asmprinter/83792
for detailed introduction.

This PR adds

* Definition of `OpAsmAttrInterface`
* Integration of `OpAsmAttrInterface` with `AsmPrinter`

In
https://github.com/llvm/llvm-project/pull/121187#discussion_r1931472250
I mentioned splitting them into two PRs, but I realized that a PR with
only definition of `OpAsmAttrInterface` is hard to test as it requires a
custom Dialect with `OpAsmDialectInterface` to hook with `AsmPrinter`,
so I just put them together to have a e2e test.

Cc @River707 @jpienaar @ftynse for review.

2025-02-19 02:18:59 +08:00

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