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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| assembly-llvm | ||
| auxiliary | ||
| codegen-llvm | ||
| codegen-units | ||
| coverage | ||
| coverage-run-rustdoc | ||
| crashes | ||
| debuginfo | ||
| incremental | ||
| mir-opt | ||
| pretty | ||
| run-make | ||
| rustdoc | ||
| rustdoc-gui | ||
| rustdoc-js | ||
| rustdoc-js-std | ||
| rustdoc-json | ||
| rustdoc-ui | ||
| ui | ||
| ui-fulldeps | ||
| COMPILER_TESTS.md | ||