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| author | bors <bors@rust-lang.org> | 2024-07-31 12:56:46 +0000 |
|---|---|---|
| committer | bors <bors@rust-lang.org> | 2024-07-31 12:56:46 +0000 |
| commit | 0b5eb7ba7bd796fb39c8bb6acd9ef6c140f28b65 (patch) | |
| tree | 5b749bd019a89eb16b88a18d94ad07b5c4a07a29 /compiler/rustc_codegen_llvm/src | |
| parent | e552c168c72c95dc28950a9aae8ed7030199aa0d (diff) | |
| parent | 33a36ea43851a767d8182938161b0dad4f9ae68c (diff) | |
| download | rust-0b5eb7ba7bd796fb39c8bb6acd9ef6c140f28b65.tar.gz rust-0b5eb7ba7bd796fb39c8bb6acd9ef6c140f28b65.zip | |
Auto merge of #127513 - nikic:llvm-19, r=cuviper
Update to LLVM 19 The LLVM 19.1.0 final release is planned for Sep 3rd. The rustc 1.82 stable release will be on Oct 17th. The unstable MC/DC coverage support is temporarily broken by this update. It will be restored by https://github.com/rust-lang/rust/pull/126733. The implementation changed substantially in LLVM 19, and there are no plans to support both the LLVM 18 and LLVM 19 implementation at the same time. Compatibility note for wasm: > WebAssembly target support for the `multivalue` target feature has changed when upgrading to LLVM 19. Support for generating functions with multiple returns no longer works and `-Ctarget-feature=+multivalue` has a different meaning than it did in LLVM 18 and prior. The WebAssembly target features `multivalue` and `reference-types` are now both enabled by default, but generated code is not affected by default. These features being enabled are encoded in the `target_features` custom section and may affect downstream tooling such as `wasm-opt` consuming the module, but the actual generated WebAssembly will continue to not use either `multivalue` or `reference-types` by default. There is no longer any supported means to generate a module that has a function with multiple returns. Related changes: * https://github.com/rust-lang/rust/pull/127605 * https://github.com/rust-lang/rust/pull/127613 * https://github.com/rust-lang/rust/pull/127654 * https://github.com/rust-lang/rust/pull/128141 * https://github.com/llvm/llvm-project/pull/98933 Fixes https://github.com/rust-lang/rust/issues/121444. Fixes https://github.com/rust-lang/rust/issues/128212.
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