https://bugs.llvm.org/show_bug.cgi?id=48283
Bug ID: 48283
Summary: Missing _InterlockedCompareExchange128 intrinsic
functions for ARM64
Product: clang
Version: unspecified
Hardware: PC
OS: Windows NT
Status: NEW
Severity: enhancement
Priority: P
Component: -New Bugs
Assignee: unassignedclangb...@nondot.org
Reporter: zufu...@163.com
CC: htmldevelo...@gmail.com, llvm-bugs@lists.llvm.org,
neeil...@live.com, richard-l...@metafoo.co.uk
split from https://bugs.llvm.org/show_bug.cgi?id=47099
See
https://docs.microsoft.com/en-us/cpp/intrinsics/interlockedcompareexchange128?view=msvc-160
_InterlockedCompareExchange128, _InterlockedCompareExchange128_acq,
_InterlockedCompareExchange128_nf and _InterlockedCompareExchange128_rel are
missing from intrin.h for ARM64.
_InterlockedCompareExchange128_nf is used by Microsoft STL <atomic> header for
ARM64, see https://github.com/microsoft/STL/blob/master/stl/inc/atomic#L483 and
https://github.com/microsoft/STL/issues/1491.
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