Hello there,<div><br></div><div><div>I was wondering what the recommendations would be for getting CAS on [mutable] vector elements?</div><div><br></div><div>I thought that as a first step I might create an a library that does the trick only for unboxed vectors, by using bits-atomic (i.e. FFI + GCC intrinsics).</div>

<div><br></div><div>Roman Leshchinskiy recommended against depending on GCC.  <span style>He thought, therefore, that not only boxed arrays but unboxed ones would need an extra PrimOp to be handled properly:</span></div>
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<div><span style>&gt; You can&#39;t rely on gcc extensions because code is usually compiled with the</span><br style><span style>&gt; native code generator nowadays and doesn&#39;t go through gcc. The dependency</span><br style>

<span style>&gt; on gcc will (hopefully) be dropped eventually anyway. So you&#39;d probably</span><br style><span style>&gt; also want primops for unboxed arrrays and Addr#.</span></div></div><div><span style><br></span></div>

<div><span style>Any advice?</span></div><div><span style><br></span></div><div><span style>Thanks,</span></div><div><font color="#222222" face="arial, sans-serif">  -Ryan</font></div><div><font color="#222222" face="arial, sans-serif"><br>

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