GCC builtins in LDC - compiler interoperability
code at klickverbot.at
Thu Jul 16 01:12:56 UTC 2020
On 16 Jul 2020, at 0:31, Cecil Ward via digitalmars-d-ldc wrote:
> Oh, shame. There’s no __builtin_unreachable in ldc? I wonder if I
> could work around this with LDC then.
As a general note, LLVM tends not to provide intrinsics with semantics
that can also be cleanly modelled in the regular LLVM IR. Clang
implements virtually all GCC intrinsics in the respective header files,
but does so by providing equivalent implementations manually for many of
As pointed out in the other response, you can easily access the
functionality from LDC through inline IR still. A project to write an
automatic converter to provide full GCC compatibility by building on
Clang's implementation might be interesting, though.
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