[PATCH] Introduce arm_acle.h supporting existing LLVM builtin intrinsics

Reid Kleckner rnk at google.com
Wed Jun 25 17:07:01 PDT 2014

This sounds very similar to the immintrin.h etc headers that Intel
provides, which IMO are great.  We don't have to implement everything as a
builtin in the compiler.  We can insulate ourselves with a header layer.

GCC's __builtins aren't standard, so having a real document seems like a
step forward.

-- from a peanut gallery somewhere

On Wed, Jun 25, 2014 at 2:44 PM, Saleem Abdulrasool <compnerd at compnerd.org>

> Im sure that Im missing some context here.  I am not sure what using this
> wrapper header to map the intrinsics to a __builtin_ form really gains.  It
> adds an additional header that needs to be maintained, and requires that
> users include this header for the intrinsics.
> At the very least, similar approaches to this on the Windows side have
> proven to be less than ideal.
> Having some additional context around why this is preferable would be nice.
> http://reviews.llvm.org/D4296
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