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[clang] implement __builtin_ctzg #83076

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nickdesaulniers opened this issue Feb 26, 2024 · 0 comments · Fixed by #83431
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[clang] implement __builtin_ctzg #83076

nickdesaulniers opened this issue Feb 26, 2024 · 0 comments · Fixed by #83431
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c23 clang:headers Headers provided by Clang, e.g. for intrinsics

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@nickdesaulniers
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similar to #82058, #83075, and mentioned in #79630. To implement parts of C23 stdbit.h, it would be nice if we exposed a similar builtin to GCC.

This is a type agnostic builtin that lowers to an intrinsic I suspect we already have in LLVM.

cc @overmighty
@nickdesaulniers nickdesaulniers added clang Clang issues not falling into any other category c23 labels Feb 26, 2024
@nickdesaulniers nickdesaulniers mentioned this issue Feb 26, 2024
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@EugeneZelenko EugeneZelenko added clang:headers Headers provided by Clang, e.g. for intrinsics and removed clang Clang issues not falling into any other category labels Feb 26, 2024
@overmighty overmighty mentioned this issue Feb 29, 2024
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overmighty added a commit to overmighty/llvm-project that referenced this issue Feb 29, 2024
@overmighty
[clang] Implement __builtin_{clzg,ctzg}
580ee1d 
Fixes llvm#83075, fixes llvm#83076.
overmighty added a commit to overmighty/llvm-project that referenced this issue Mar 4, 2024
@overmighty
[clang] Implement __builtin_{clzg,ctzg}
5e37b3b 
Fixes llvm#83075, fixes llvm#83076.
chencha3 pushed a commit to chencha3/llvm-project that referenced this issue Mar 23, 2024
@overmighty @chencha3
[clang] Implement __builtin_{clzg,ctzg} (llvm#83431)
7fc6a66 
Fixes llvm#83075, fixes llvm#83076.
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[clang] Implement __builtin_{clzg,ctzg} overmighty/llvm-project
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@nickdesaulniers @EugeneZelenko