[llvm-commits] [PATCH] Test NEON code generation and calling convention

[Evan Cheng]

On May 17, 2010, at 8:50 AM, Edmund Grimley-Evans wrote:

> Could this file (vadd2.ll) be added in test/CodeGen/ARM/?

Sure, you can commit it. Do you have more of these unit tests? It would be nice if there is a complete set rather than just adding tests only when they break.

> 
> It broke in r103411 and was fixed again in r103854. It would be nice
> to keep it working.
> 
> I'm not sure what if any official rules govern how vector quantities
> should be passed as arguments and returned. It appears that vectors of
> less than 64 bits (such as the <2 x i8> in the first example in
> vadd2.ll) currently get passed in R0-R3 rather than Q0-Q3, which leads
> to some ugly code. Is this a bug or a feature?

I think that's due to the Darwin ABI?

Evan

> 
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