bjoernager/rust
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add general powerpc64le bound

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(some powerpc64le targets can guarantee more, but for now it doesn't seem worth separating by OS/vendor)
This commit is contained in:
Ralf Jung 2023-09-08 09:26:06 +02:00
parent 7453235feb
commit 07b8c10ed8
1 changed files with 8 additions and 7 deletions
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15
library/core/src/sync/atomic.rs
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@ -92,13 +92,14 @@
//! "sufficiently small" depends on the architecture:
//!
//! | Target architecture | Maximal atomic `load` size that is guaranteed read-only |
//! |-----------|---------|
//! | `x86` | 4 bytes |
//! | `x86_64` | 8 bytes |
//! | `arm` | 4 bytes |
//! | `aarch64` | 8 bytes |
//! | `riscv32` | 4 bytes |
//! | `riscv64` | 8 bytes |
//! |---------------|---------|
//! | `x86` | 4 bytes |
//! | `x86_64` | 8 bytes |
//! | `arm` | 4 bytes |
//! | `aarch64` | 8 bytes |
//! | `riscv32` | 4 bytes |
//! | `riscv64` | 8 bytes |
//! | `powerpc64le` | 8 bytes |
//!
//! Any atomic `load` on read-only memory larger than the given size are Undefined Behavior. For
//! architectures not listed above, all atomic `load` on read-only memory are Undefined Behavior.