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_InterlockedCompareExchange128 not implemented on Windows #34599

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llvmbot opened this issue Nov 8, 2017 · 3 comments
Closed

_InterlockedCompareExchange128 not implemented on Windows #34599

llvmbot opened this issue Nov 8, 2017 · 3 comments
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bugzilla Issues migrated from bugzilla clang Clang issues not falling into any other category

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@llvmbot
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llvmbot commented Nov 8, 2017

Bugzilla Link 35251
Resolution FIXED
Resolved on Dec 14, 2017 11:33
Version trunk
OS Windows NT
Reporter LLVM Bugzilla Contributor
CC @RKSimon

Extended Description

_InterlockedCompareExchange128 (an MSVC intrinsic) is declared on line 280 of intrin.h, but there is no implementation (that I could find), and using:
#pragma intrinsic(_InterlockedCompareExchange128)

Produces:
error: '_InterlockedCompareExchange128' is not a recognized builtin; consider including <intrin.h> to access non-builtin intrinsics [-Werror,-Wignored-pragma-intrinsic]
#pragma intrinsic(_InterlockedCompareExchange128)
@llvmbot
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llvmbot commented Nov 8, 2017

I should also mention that when using the function, I get the following linker error:
f:\path\to\lld-link.exe: warning: test.o: undefined symbol: _InterlockedCompareExchange128

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llvmbot commented Nov 29, 2017

I'm working on implementing this.

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llvmbot commented Dec 14, 2017

Submitted as r320730 (http://llvm.org/viewvc/llvm-project?view=revision&revision=320730)

@llvmbot llvmbot transferred this issue from llvm/llvm-bugzilla-archive Dec 10, 2021
This issue was closed.
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