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The MMX intrinsics in clang have a __nodebug__ attribute #246

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gnzlbg opened this issue Dec 22, 2017 · 2 comments
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The MMX intrinsics in clang have a __nodebug__ attribute #246

gnzlbg opened this issue Dec 22, 2017 · 2 comments
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A-llvm A-x86

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@gnzlbg
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gnzlbg commented Dec 22, 2017

We might want to do the same in Rust.
@alexcrichton
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FWIW I believe this is due to the "unknown codeview register" errors we were getting, I think that LLVM's either buggy or intentionally not implementing this behavior for now. We solved this by using debug = 1 instead of 2, but it'll be a problem for applications using these intrinsics I believe.

@workingjubilee
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Direct MMX support is no longer in scope for std::arch, see:

@workingjubilee workingjubilee closed this as not planned Won't fix, can't repro, duplicate, stale Aug 31, 2022
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@alexcrichton @gnzlbg @workingjubilee