search for: dn375768

> In general, I'm not too keen on adding more calling conventions unless > there's a really powerful need for one from an ABI perspective. This > sounds more like an optimization than an ABI need. I think that is the case. > What's more, I > worry (a little bit) about confusion that could be caused with the > __vectorcall calling convention (which we do not

...vector/HVA types. The size is fixed to 8 bytes per argument. - HVA types are returned in XMM0/YMM0/ZMM0 to XMM3/YMM3/ZMM3 while vector types are returned in XMM0/YMM0/ZMM0 and integers in RAX For more information or examples please see also: https://msdn.microsoft.com/en-us/library/dn375768.aspx Observations ------------------ - LLVM IR must preserve the original position of the arguments. - Since HVA structures are allocated in lower priority than vector types, the vector types should be allocated first. Hence, one pass on the argument list is not sufficient anymore,...