Re: [PATCH 14/28] math: Use wordsize-64 version for isinf

[Szabolcs Nagy <Szabolcs.Nagy@arm.com>]

On 29/03/2019 13:35, Adhemerval Zanella wrote:
>   - math.h will use compiler builtin for gcc 4.4+ when built without
>     -fsignaling-nans and the builtin is expanded inline for all
>     supported architectures.  As an example, there is no intra isnan
>     call on libm for the architecture I checked (x86, arm, aarch64,
>     and powerpc).
> 
>   - The resulting binary difference on 32 bits architecture is minimum
>     for the non hotspot symbol.
> 
>   - It helps wordsize-64 architectures that use ldbl-opt.
> 
>   - It add some code simplification with reduction of duplicated
>     implementations.
> 
> Checked on powerpc-linux-gnu (built without --with-cpu, with
> --with-cpu=power4 and with --with-cpu=power5+ and --disable-multi-arch),
> powerpc64-linux-gnu (built without --with-cp and with --with-cpu=power5+
> and --disable-multi-arch).
> 
>         * sysdeps/ieee754/dbl-64/wordsize-64/s_isinf.c: Move to ...
>         * sysdeps/ieee754/dbl-64/s_isinf.c: ... here and format code.


on aarch64 buildbot i see

make[2]: *** No rule to make target '../sysdeps/ieee754/dbl-64/wordsize-64/s_isinf.c', needed by '/B/math/s_isinf.o'.
make[2]: *** No rule to make target '../sysdeps/ieee754/dbl-64/wordsize-64/s_isnan.c', needed by '/B/math/s_isnan.o'.
make[2]: *** No rule to make target '../sysdeps/ieee754/dbl-64/wordsize-64/s_finite.c', needed by '/B/math/s_finite.o'.
make[2]: Target 'subdir_lib' not remade because of errors.
make[1]: *** [Makefile:259: math/subdir_lib] Error 2