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authorbors <bors@rust-lang.org>2023-11-01 16:39:22 +0000
committerbors <bors@rust-lang.org>2023-11-01 16:39:22 +0000
commitf3457dbf84cd86d284454d12705861398ece76c3 (patch)
tree38468c2c51db37538b01764fa4b6f22965670f93 /compiler/rustc_mir_transform/src/coverage/query.rs
parent146dafa26277c873172f555017b970ef006d302a (diff)
parentecefd4eb3f3bbd14d715586f8b6c5caae6779a6c (diff)
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Auto merge of #117307 - taiki-e:espidf-atomic-64, r=Amanieu
Set max_atomic_width for riscv32*-esp-espidf to 32

Fixes #117305

> Since riscv32 does not have 64-bit atomic instructions, I do not believe there is any way to fix this problem other than setting max_atomic_width of these targets to 32.

This is a breaking change because Atomic\*64 will become unavailable, but all affected targets are tier 3, and the current Atomic*64 violates the standard library's API contract and can cause problems with code that rely on the standard library's atomic types being lock-free.

r? `@Amanieu`
cc `@ivmarkov` `@MabezDev`
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