Re: [PATCH, version 5a], Add support for _Float<N> and _Float<N>X sqrt, fma, fmin, fmax built-in functions

[Michael Meissner <meissner@linux.vnet.ibm.com>]

On Mon, Oct 30, 2017 at 11:30:12PM +0000, Joseph Myers wrote:
> On Mon, 30 Oct 2017, Michael Meissner wrote:
> 
> > This patch fixes exporting the non __builtin_ names to be done by default only
> > for the C language.  I added a target hook in case a port needs to enable
> > built-ins for C++ (either wholesale, or for particular built-in functions).
> 
> Testing lang_GNU_C () can't possibly be correct here; ObjC should always 
> be handled like C unless there is a strong reason not to do so, explicitly 
> commented.

Ok, tomorrow, I will look for a more appropriate way to check for C.

> Also, I'd expect the FALLBACK_P argument to DEF_BUILTIN to be true, not a 
> call to the hook; __builtin_sqrtf128 should always end up generating a 
> call to the out-of-line sqrtf128 function if not inlined, regardless of 
> source language.

I was wondering whether fallback_t should always be true.

Thanks.

-- 
Michael Meissner, IBM
IBM, M/S 2506R, 550 King Street, Littleton, MA 01460-6245, USA
email: meissner@linux.vnet.ibm.com, phone: +1 (978) 899-4797