glibc/sysdeps/powerpc
Adhemerval Zanella 79bfbc93de powerpc: Remove modf optimization
The generic implementation is slight more optimized than the powerpc
one, where it has a more optimized inf/nan check (by not using FP
unit checks, along with branch prediction hints), and removed one
branch by issuing trunc instead of a combination of floor/ceil (which
also generated less code).

On power10 with gcc 14.2.1:

reciprocal-throughput        master         patch        difference
workload-0_1                 1.1351        0.9067            20.12%
workload-1_maxint            1.4230        0.9040            36.47%
workload-maxint_maxfloat     1.5038        0.9076            39.65%
workload-integral            1.1280        0.9111            19.23%

latency                      master         patch        difference
workload-0_1                 1.1440        2.7117          -137.03%
workload-1_maxint            4.0556        2.7070            33.25%
workload-maxint_maxfloat     3.2122        2.7164            15.43%
workload-integral            3.2381        2.7281            15.75%

Checked on powerpc64le-linux-gnu.
Reviewed-by: Sachin Monga <smonga@linux.ibm.com>
2025-06-25 15:05:30 -03:00
..
bits Update copyright dates with scripts/update-copyrights 2025-01-01 11:22:09 -08:00
fpu powerpc: Remove modf optimization 2025-06-25 15:05:30 -03:00
nofpu math: Refactor how to use libm-test-ulps 2025-03-12 13:40:07 -03:00
nptl powerpc: Remove unused dl-procinfo.h 2025-03-05 11:22:09 -03:00
power4 Update copyright dates with scripts/update-copyrights 2025-01-01 11:22:09 -08:00
power6 Update copyright dates with scripts/update-copyrights 2025-01-01 11:22:09 -08:00
powerpc32 powerpc: Remove modf optimization 2025-06-25 15:05:30 -03:00
powerpc64 powerpc: Remove modf optimization 2025-06-25 15:05:30 -03:00
sys/platform Update copyright dates with scripts/update-copyrights 2025-01-01 11:22:09 -08:00
Makefile i386: Update ___tls_get_addr to preserve vector registers 2025-06-19 04:30:31 +08:00
Versions
abort-instr.h
atomic-machine.h Update copyright dates with scripts/update-copyrights 2025-01-01 11:22:09 -08:00
dl-diagnostics-cpu.c powerpc: Move cache geometry information to ld diagnostics 2025-03-05 11:22:09 -03:00
dl-lookupcfg.h Update copyright dates with scripts/update-copyrights 2025-01-01 11:22:09 -08:00
dl-procinfo.c powerpc: Move AT_HWCAP descriptions to ld diagnostics 2025-03-05 11:22:09 -03:00
dl-tls.c Update copyright dates with scripts/update-copyrights 2025-01-01 11:22:09 -08:00
dl-tls.h elf: Remove the remaining uses of GET_ADDR_OFFSET 2025-01-02 13:45:27 +01:00
dl-tunables.list Update copyright dates with scripts/update-copyrights 2025-01-01 11:22:09 -08:00
elf-initfini.h Update copyright dates with scripts/update-copyrights 2025-01-01 11:22:09 -08:00
fpu_control.h Update copyright dates with scripts/update-copyrights 2025-01-01 11:22:09 -08:00
gccframe.h Update copyright dates with scripts/update-copyrights 2025-01-01 11:22:09 -08:00
hwcapinfo.c Remove dl-procinfo.h 2025-03-05 11:22:09 -03:00
hwcapinfo.h powerpc: Remove unused dl-procinfo.h 2025-03-05 11:22:09 -03:00
ifunc-sel.h
jmpbuf-offsets.h Update copyright dates with scripts/update-copyrights 2025-01-01 11:22:09 -08:00
jmpbuf-unwind.h Update copyright dates with scripts/update-copyrights 2025-01-01 11:22:09 -08:00
ldsodefs.h Update copyright dates with scripts/update-copyrights 2025-01-01 11:22:09 -08:00
libc-tls.c Update copyright dates with scripts/update-copyrights 2025-01-01 11:22:09 -08:00
locale-defines.sym
longjmp.c Update copyright dates with scripts/update-copyrights 2025-01-01 11:22:09 -08:00
machine-gmon.h Update copyright dates with scripts/update-copyrights 2025-01-01 11:22:09 -08:00
math-tests-snan-cast.h Update copyright dates with scripts/update-copyrights 2025-01-01 11:22:09 -08:00
math-use-builtins-ffs.h
mod-cache-ppc.c Update copyright dates with scripts/update-copyrights 2025-01-01 11:22:09 -08:00
mod-tlsopt-powerpc.c
mp_clz_tab.c
novmx-longjmp.c Update copyright dates with scripts/update-copyrights 2025-01-01 11:22:09 -08:00
novmx-sigjmp.c Update copyright dates with scripts/update-copyrights 2025-01-01 11:22:09 -08:00
novmxsetjmp.h Update copyright dates with scripts/update-copyrights 2025-01-01 11:22:09 -08:00
preconfigure Update copyright in generated files by running "make" 2025-01-01 11:22:09 -08:00
preconfigure.ac
rtld-global-offsets.sym
sigjmp.c Update copyright dates with scripts/update-copyrights 2025-01-01 11:22:09 -08:00
sotruss-lib.c Update copyright dates with scripts/update-copyrights 2025-01-01 11:22:09 -08:00
string-fza.h Update copyright dates with scripts/update-copyrights 2025-01-01 11:22:09 -08:00
sysdep.h Update copyright dates with scripts/update-copyrights 2025-01-01 11:22:09 -08:00
test-arith.c Update copyright dates with scripts/update-copyrights 2025-01-01 11:22:09 -08:00
test-arithf.c
test-get_hwcap-static.c Update copyright dates with scripts/update-copyrights 2025-01-01 11:22:09 -08:00
test-get_hwcap.c powerpc: Remove unused dl-procinfo.h 2025-03-05 11:22:09 -03:00
test-gettimebase.c Update copyright dates with scripts/update-copyrights 2025-01-01 11:22:09 -08:00
thread_pointer.h Move <thread_pointer.h> to kernel-independent sysdeps directories 2025-01-09 19:30:16 +01:00
tst-cache-ppc-static-dlopen.c Update copyright dates with scripts/update-copyrights 2025-01-01 11:22:09 -08:00
tst-cache-ppc-static.c Update copyright dates with scripts/update-copyrights 2025-01-01 11:22:09 -08:00
tst-cache-ppc.c Update copyright dates with scripts/update-copyrights 2025-01-01 11:22:09 -08:00
tst-set_ppr.c Update copyright dates with scripts/update-copyrights 2025-01-01 11:22:09 -08:00
tst-stack-align.h Update copyright dates with scripts/update-copyrights 2025-01-01 11:22:09 -08:00
tst-tlsifunc-static.c Update copyright dates with scripts/update-copyrights 2025-01-01 11:22:09 -08:00
tst-tlsifunc.c Update copyright dates with scripts/update-copyrights 2025-01-01 11:22:09 -08:00
tst-tlsopt-powerpc.c
utmp-size.h