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Tracking issue for integer_atomics (AtomicU128/AtomicI128) #99069
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A-atomicArea: Atomics, barriers, and sync primitivesArea: Atomics, barriers, and sync primitivesA-concurrencyArea: ConcurrencyArea: ConcurrencyC-tracking-issueCategory: An issue tracking the progress of sth. like the implementation of an RFCCategory: An issue tracking the progress of sth. like the implementation of an RFCT-libs-apiRelevant to the library API team, which will review and decide on the PR/issue.Relevant to the library API team, which will review and decide on the PR/issue.disposition-mergeThis issue / PR is in PFCP or FCP with a disposition to merge it.This issue / PR is in PFCP or FCP with a disposition to merge it.finished-final-comment-periodThe final comment period is finished for this PR / Issue.The final comment period is finished for this PR / Issue.
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A-atomicArea: Atomics, barriers, and sync primitivesArea: Atomics, barriers, and sync primitivesA-concurrencyArea: ConcurrencyArea: ConcurrencyC-tracking-issueCategory: An issue tracking the progress of sth. like the implementation of an RFCCategory: An issue tracking the progress of sth. like the implementation of an RFCT-libs-apiRelevant to the library API team, which will review and decide on the PR/issue.Relevant to the library API team, which will review and decide on the PR/issue.disposition-mergeThis issue / PR is in PFCP or FCP with a disposition to merge it.This issue / PR is in PFCP or FCP with a disposition to merge it.finished-final-comment-periodThe final comment period is finished for this PR / Issue.The final comment period is finished for this PR / Issue.
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Tracking rust-lang/rfcs#1543.
Seems related to #56071. See also #57425 which stabilized other atomic integer widths.
Probably blocked by various LLVM issues:
cmpxchg16bfor 128-bit atomics on x86_64 llvm/llvm-project#187503