on 2022/12/20 20:14, Jakub Jelinek wrote:
> On Mon, Dec 19, 2022 at 04:11:59PM +0800, Kewen.Lin wrote:
>> In function fold_convert_const_real_from_real, when the modes of
>> two types involved in fp conversion are the same, we can simply
>> take it as copy, rebuild with the exactly same TREE_REAL_CST and
>> the target type. It is more efficient and helps to avoid possible
>> unexpected signalling bit clearing in [1].
>>
>> Bootstrapped and regtested on x86_64-redhat-linux, aarch64-linux-gnu
>> and powerpc64{,le}-linux-gnu.
>>
>> Is it ok for trunk?
>>
>> [1] https://gcc.gnu.org/pipermail/gcc-patches/2022-December/608533.html
>>
>> gcc/ChangeLog:
>>
>> * fold-const.cc (fold_convert_const_real_from_real): Treat floating
>> point conversion to a type with same mode as copy instead of normal
>> convertFormat.
>
> The patch is ok for trunk. Thanks.
>
Thanks! Committed in r13-4815-g94cf7a2d95bf6d.
BR,
Kewen
