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| author | bors <bors@rust-lang.org> | 2022-08-28 01:34:47 +0000 |
|---|---|---|
| committer | bors <bors@rust-lang.org> | 2022-08-28 01:34:47 +0000 |
| commit | 1e978a3627bd65064164af3548c585fb25eef9d2 (patch) | |
| tree | d36b93e40e37cd26a0f15a200435c511ed21c0bd /src/tools/publish_toolstate.py | |
| parent | eaadb8947b850a025404082f6297766c4680a42a (diff) | |
| parent | ca753124088c0d57ca6728ee093363cbc1db5274 (diff) | |
| download | rust-1e978a3627bd65064164af3548c585fb25eef9d2.tar.gz rust-1e978a3627bd65064164af3548c585fb25eef9d2.zip | |
Auto merge of #96946 - WaffleLapkin:ptr_mask, r=scottmcm
Add pointer masking convenience functions
This PR adds the following public API:
```rust
impl<T: ?Sized> *const T {
fn mask(self, mask: usize) -> *const T;
}
impl<T: ?Sized> *mut T {
fn mask(self, mask: usize) -> *const T;
}
// mod intrinsics
fn mask<T>(ptr: *const T, mask: usize) -> *const T
```
This is equivalent to `ptr.map_addr(|a| a & mask)` but also uses a cool llvm intrinsic.
Proposed in https://github.com/rust-lang/rust/pull/95643#issuecomment-1121562352
cc `@Gankra` `@scottmcm` `@RalfJung`
r? rust-lang/libs-api
Diffstat (limited to 'src/tools/publish_toolstate.py')
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