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Auto merge of #99670 - Amanieu:revert-99595, r=nikic

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Revert "Mark atomics as unsupported on thumbv6m"

This is a breaking change for the `thumbv6m` target. See #99668 for discussion on how we can proceed forward from here.

This reverts commit 7514610219.

cc `@nikic`
This commit is contained in:
bors 2022-07-24 13:46:15 +00:00
commit c32dcbba18
1 changed files with 1 additions and 2 deletions
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compiler/rustc_target/src/spec/thumbv6m_none_eabi.rs
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@ -14,9 +14,8 @@ pub fn target() -> Target {
// The ARMv6-M architecture doesn't support unaligned loads/stores so we disable them // The ARMv6-M architecture doesn't support unaligned loads/stores so we disable them
// with +strict-align. // with +strict-align.
features: "+strict-align".into(), features: "+strict-align".into(),
// There are no atomic instructions available in the instruction set of the ARMv6-M // There are no atomic CAS instructions available in the instruction set of the ARMv6-M
// architecture // architecture
max_atomic_width: Some(0),
atomic_cas: false, atomic_cas: false,
..super::thumb_base::opts() ..super::thumb_base::opts()
}, },