[LLVMdev] [PATCH][RFC]: Add fmin/fmax intrinsics

[Matt Arsenault]

On Sep 15, 2014, at 4:17 PM, Owen Anderson <resistor at mac.com> wrote:

> I’d be fine with that proposal.  I could even be convinced if we wanted to add a pair of NaN-propagating intrinsics as well, for targets and languages that want those semantics, even if I disagree with them.  I do think that, if we are using the minnum/maxnum names, we should explicitly note that they are equivalent to C’s fmin/fmax, but not std::min/std::max or Java(script)’s min/max.
> 
> —Owen
> 
> 
>> On Sep 15, 2014, at 12:26 PM, Dan Gohman <dan433584 at gmail.com> wrote:
>> 
>> Given IEEE-754's sway, and its saying what it does on this point, but given also the popularity of NaN-propagating min and max, how about a compromise? We add intrinsics following the IEEE-754 semantics, but we also follow IEEE-754 (and ARMv8) in renaming them to minnum and maxnum, to clarify which interpretation these intrinsics are using.
> 
> 
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I can rename these, but the convention followed by all the other LLVM intrinsics follow the C library names