[ARM] Enable __fp16 as a function parameter and return type.

[Ramana Radhakrishnan]

On 18/05/16 15:33, Matthew Wahab wrote:
> On 18/05/16 09:41, Ramana Radhakrishnan wrote:
>> On Mon, May 16, 2016 at 2:16 PM, Tejas Belagod
>> <tejas.belagod@foss.arm.com> wrote:
>>
>>>
>>> We do have plans to fix pre-ACLE behavior of fp16 to conform to current ACLE
>>> spec, but can't say when exactly.
>>
>> Matthew, could you please take a look at this while you are in this area ?
> 
> Ok.
> 
> Part of this is likely to involve removing TARGET_CONVERT_TO_TYPE from the ARM backend. grep doesn't show anywhere that uses this hook, the only other occurrence is in the ARC backend. Does the hook ever get used?
> 
> Matthew
> 
> 

The use in the front-ends / mid-end is usually in lower case - thus grepping for convert_to_type will give you the answer.

grep -r convert_to_type *

gcc/jit/jit-playback.c:  t_ret = targetm.convert_to_type (t_dst_type, t_expr);
gcc/cp/cvt.c:  e1 = targetm.convert_to_type (type, e);
gcc/c/c-convert.c:  ret = targetm.convert_to_type (type, expr);
gcc/config/arm/arm.c:static tree arm_convert_to_type (tree type, tree expr);
gcc/config/arm/arm.c:#define TARGET_CONVERT_TO_TYPE arm_convert_to_type
gcc/config/arm/arm.c:arm_convert_to_type (tree type, tree expr)
gcc/config/avr/avr.c:avr_convert_to_type (tree type, tree expr)
gcc/config/avr/avr.c:#define TARGET_CONVERT_TO_TYPE avr_convert_to_type

I don't think you can poison this as the avr backend appears to use this rather than arc.


regards
Ramana