Finish and benchmark inline/mem2reg improvements.#552

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eddyb/faster-inline-mem2reg

Commits on Apr 7, 2026

Revert "linker/inline: use `OpPhi` instead of `OpVariable` for return values."

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Revert "WIP: mem2reg speedup"

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Revert "WIP: couple of inliner things that need to be disentangled"

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Revert "WIP: (TODO: finish bottom-up cleanups) bottom-up inlining"

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Revert "linker/inline: fix `OpVariable` debuginfo collection and insertion."

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[2024] linker/inline: fix `OpVariable` debuginfo collection and insertion.

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[2024] linker/inline: use bottom-up inlining to minimize redundancy.

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[2024] linker/mem2reg: index SPIR-V blocks by their label IDs for O(1) lookup.

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[2024] linker/inline: use `OpPhi` instead of `OpVariable` for return values.

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linker/inline: fix typos in comments.

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[2024] linker/mem2reg: apply rewrite rules only once per `insert_phis_all` invocation.

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linker/inline: also run `remove_duplicate_debuginfo` on every fully-inlined function.

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linker/inline: also run `mem2reg` on every fully-inlined function.

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Update rebased compiletest expectations
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