Reduce non-default-interface costs for complicated runtimeclasses#1579

Draft

jonwis wants to merge 27 commits intomicrosoft:masterfrom

jonwis:user/jonwis/fast-runtimeclasses

Commits on May 4, 2026

Add thunk-based interface caching plan, build/test scripts
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Address plan review: fix 10 gaps, snake_case, rework build script
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Move write_abi_args to Phase 1, add user rules to plan
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Rules: add -logo nul, reduce noisy output guidance
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Phase 1: thunked runtimeclass infrastructure (strings, ASM stubs, consume_general)
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Phase 2 WIP: code generator emits thunked runtimeclasses
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Fix thunked type identity: arg<T>, is_com_interface, empty_value, box/unbox
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Update plan notes: systematic fix complete, disassembly verification status
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Add thunked_dispatch test: consumer-side PropertySet verification
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Phase 3 tests: copy/move, ABI interop, as/try_as, thread safety
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Update plan: Phase 3 test coverage table, reset_thunked bug documentation
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Phase 3 complete: generic default (StringMap) + full mode (Package >8) tests
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Phase 3 complete: all test scenarios covered, 3072 assertions / 102 tests
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Add technical documentation: docs/runtimeclass-caching.md
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Exclude async default interfaces from thunking; add operator== with COM identity
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Fix bind_in, delegate ABI, test_slow expectation; exclude async types
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Commits on May 5, 2026

Commits on May 7, 2026

Rename things
jonwis
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Commits on May 8, 2026

Modernize assembly using windows macros
jonwis
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