816f098464
add a fallback implementation for the `prefetch_*` intrinsics related ACP: https://github.com/rust-lang/libs-team/issues/638 The fallback is to just ignore the arguments. That is a valid implementation because this intrinsic is just a hint. I also added the `miri::intrinsic_fallback_is_spec` annotation, so that miri now supports these operations. A prefetch intrinsic call is valid on any pointer. (specifically LLVM guarantees this https://llvm.org/docs/LangRef.html#llvm-prefetch-intrinsic) Next, I made the `LOCALITY` argument a const generic. That argument must be const (otherwise LLVM crashes), but that was not reflected in the type. Finally, with these changes, the intrinsic can be safe and `const` (a prefetch at const evaluation time is just a no-op). cc `@Amanieu` r? `@RalfJung` |
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| .. | ||
| bootstrap | ||
| build_helper | ||
| ci | ||
| doc | ||
| etc | ||
| gcc@04ce66d8c9 | ||
| librustdoc | ||
| llvm-project@9a1f898064 | ||
| rustc-std-workspace | ||
| rustdoc-json-types | ||
| tools | ||
| README.md | ||
| stage0 | ||
| version | ||
This directory contains some source code for the Rust project, including:
- The bootstrapping build system
- Various submodules for tools, like cargo, tidy, etc.
For more information on how various parts of the compiler work, see the rustc dev guide.