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authorbors <bors@rust-lang.org>2024-03-05 00:13:01 +0000
committerbors <bors@rust-lang.org>2024-03-05 00:13:01 +0000
commit2eeff462b762ed00f9d557d8c6ad7a3d562f692a (patch)
treed5e2442dec8294e89a12d0680109e0ef3fd8d7cf /compiler/rustc_llvm/llvm-wrapper/SymbolWrapper.cpp
parent50e77f133f8eb1f745e05681163a0143d6c4dd7d (diff)
parentc04f0caaff5b09a2202bb220579ef45722e74ed2 (diff)
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Auto merge of #120675 - oli-obk:intrinsics3.0, r=pnkfelix
Add a scheme for moving away from `extern "rust-intrinsic"` entirely

All `rust-intrinsic`s can become free functions now, either with a fallback body, or with a dummy body and an attribute, requiring backends to actually implement the intrinsic.

This PR demonstrates the dummy-body scheme with the `vtable_size` intrinsic.

cc https://github.com/rust-lang/rust/issues/63585

follow-up to #120500

MCP at https://github.com/rust-lang/compiler-team/issues/720
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