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use target-arch based table

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This commit is contained in:
Ralf Jung 2023-10-16 19:29:16 +02:00
parent 9d8506d27f
commit 6605116463
1 changed files with 4 additions and 5 deletions
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9
library/core/src/sync/atomic.rs
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@ -100,12 +100,11 @@
//! Undefined Behavior. The exact size limit for what makes a load "sufficiently small" varies
//! depending on the target:
//!
//! | Target triple prefix (regular expression) | Size limit |
//! | `target_arch` | Size limit |
//! |---------------|---------|
//! | `i(3|5|6)86-`, `arm`, `thumb`, `mips(|el)-`, `powerpc-`, `riscv32`, `sparc-` | 4 bytes |
//! | `x86_64-`, `aarch64-`, `loongarch64-`, `mips64(|el)-`, `powerpc64-`, `riscv64` | 8 bytes |
//! | `powerpc64le-` | 16 bytes |
//! | `s390x-` | 16 bytes |
//! | `x86`, `arm`, `mips`, `mips32r6, `powerpc`, `riscv32`, `sparc`, `hexagon` | 4 bytes |
//! | `x86_64`, `aarch64`, `loongarch64`, `mips64`, `mips64r6`, `powerpc64`, `riscv64`, `sparc64` | 8 bytes |
//! | `s390x`, `powerpc64` with `target_feature = "quadword-atomics"` | 16 bytes |
//!
//! Atomics loads that are larger than this limit as well as atomic loads with ordering other
//! than `Relaxed`, as well as *all* atomic loads on targets not listed in the table, might still be