glibc/sysdeps/powerpc/powerpc64/le/power9
Paul E. Murphy 33fc34521d powerpc64le: ifunc select *f128 routines in multiarch mode
Programatically generate simple wrappers for interesting libm *f128
objects.  Selected functions are transcendental functions or
those with trivial compiler builtins.  This can result in a 2-3x
speedup (e.g logf128 and expf128).

A second set of implementation files are generated which include
the first implementation encountered along the search path.  This
usually works, except when a wrapper is overriden and makefile
search order slightly diverges from include order.  Likewise,
wrapper object files are created for each generated file.  These
hold the ifunc selection routines which export ABI.

Next, several shared headers are intercepted to control renaming of
asm function redirects are used first, and sometimes macro renames
if the former is impractical.

Notably, if the request machine supports hardware IEEE128 (i.e POWER9
and newer) this ifunc machinery is disabled.  Likewise existing
ifunc support for float128 is consolidated into this (e.g sqrtf128
and fmaf128).

Reviewed-by: Tulio Magno Quites Machado Filho <tuliom@linux.ibm.com>
2020-11-30 09:56:14 -06:00
..
fpu powerpc64le: refactor e_sqrtf128.c 2020-06-16 13:50:44 -05:00
multiarch
Implies
Makeconfig powerpc64le: ifunc select *f128 routines in multiarch mode 2020-11-30 09:56:14 -06:00
rawmemchr.S powerpc: Optimized rawmemchr for POWER9 2020-05-18 17:08:54 -05:00
rtld-strcmp.S powerpc64le/power9: guard power9 strcmp against rtld usage [BZ# 25905] 2020-05-04 13:27:31 -05:00
rtld-strlen.S powerpc64le: add optimized strlen for P9 2020-06-05 15:30:00 -05:00
stpcpy.S powerpc: Optimized stpcpy for POWER9 2020-05-18 08:26:22 -05:00
stpncpy.S powerpc: Add optimized stpncpy for POWER9 2020-11-12 13:16:36 -03:00
strcmp.S
strcpy.S powerpc: Optimized stpcpy for POWER9 2020-05-18 08:26:22 -05:00
strlen.S powerpc64le: add optimized strlen for P9 2020-06-05 15:30:00 -05:00
strncmp.S
strncpy.S powerpc: Add optimized stpncpy for POWER9 2020-11-12 13:16:36 -03:00