AuroraMiddleware/glibc
1
0
Fork 0
mirror of https://sourceware.org/git/glibc.git synced 2024-11-21 20:40:05 +00:00
Code Issues Packages Projects Releases Wiki Activity
c369580814
glibc/sysdeps/i386
History
Adhemerval Zanella c369580814 math: Use log2p1f from CORE-MATH 
The CORE-MATH implementation is correctly rounded (for any rounding mode)
and shows better performance compared to the generic log2p1f.

The code was adapted to glibc style and to use the definition of
math_config.h (to handle errno, overflow, and underflow).

Benchtest on x64_64 (Ryzen 9 5900X, gcc 14.2.1), aarch64 (Neoverse-N1,
gcc 13.3.1), and powerpc (POWER10, gcc 13.2.1):

Latency                      master        patched   improvement
x86_64                      70.1462        47.0090        32.98%
x86_64v2                    70.2513        47.6160        32.22%
x86_64v3                    60.4840        39.9443        33.96%
i686                        164.068        122.909        25.09%
aarch64                     25.9169        16.9207        34.71%
power10                     18.1261        9.8592         45.61%
powerpc                     17.2683        9.38665        45.64%

reciprocal-throughput        master        patched   improvement
x86_64                      26.2240        16.4082        37.43%
x86_64v2                    25.0911        15.7480        37.24%
x86_64v3                    20.9371        11.7264        43.99%
i686                        90.4209        95.3073        -5.40%
aarch64                     16.8537        8.9561         46.86%
power10                     12.9401        6.5555         49.34%
powerpc                     9.01763        7.54745        16.30%

The performance decrease for i686 is mostly due the use of x87 fpu,
when building with '-msse2 -mfpmath=sse:

                             master        patched   improvement
latency                     164.068        102.982        37.23%
reciprocal-throughput       89.1968        82.5117         7.49%

Signed-off-by: Alexei Sibidanov <sibid@uvic.ca>
Signed-off-by: Paul Zimmermann <Paul.Zimmermann@inria.fr>
Signed-off-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
Reviewed-by: DJ Delorie <dj@redhat.com>
2024-11-01 11:27:39 -03:00
..
fpu math: Use log2p1f from CORE-MATH 2024-11-01 11:27:39 -03:00
htl Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
i586 i586: Fix multiple definitions of __memcpy_chk and __mempcpy_chk 2024-05-02 11:50:21 +01:00
i686 math: Use log2p1f from CORE-MATH 2024-11-01 11:27:39 -03:00
i786 Also applying directories. 1999-01-24 10:39:22 +00:00
nptl Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
sys Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
____longjmp_chk.S Add sigstack handling to Linux ____longjmp_chk on i386. 2009-07-30 21:50:14 -07:00
__longjmp.S i386: Remove CET support 2024-01-09 13:55:51 -03:00
abort-instr.h update from main archive 961220 1996-12-21 04:13:58 +00:00
add_n.S i386: Remove CET support 2024-01-09 13:55:51 -03:00
addmul_1.S Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
asm-syntax.h Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
backtrace.c Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
bsd-_setjmp.S i386: Remove CET support 2024-01-09 13:55:51 -03:00
bsd-setjmp.S i386: Remove CET support 2024-01-09 13:55:51 -03:00
configure Convert to autoconf 2.72 (vanilla release, no distribution patches) 2024-06-17 21:15:28 +02:00
configure.ac i386: Fail if configured with --enable-cet 2024-01-09 13:55:51 -03:00
crti.S i386: Remove CET support 2024-01-09 13:55:51 -03:00
crtn.S Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
dl-fixup-attribute.h Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
dl-irel.h Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
dl-machine-rel.h Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
dl-machine.h x86: Update _dl_tlsdesc_dynamic to preserve caller-saved registers 2024-02-28 09:02:56 -08:00
dl-procinfo.c Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
dl-tls.h Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
dl-tlsdesc-dynamic.h x86: Update _dl_tlsdesc_dynamic to preserve caller-saved registers 2024-02-28 09:02:56 -08:00
dl-tlsdesc.h Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
dl-tlsdesc.S x86: Update _dl_tlsdesc_dynamic to preserve caller-saved registers 2024-02-28 09:02:56 -08:00
dl-trampoline.S i386: Remove CET support bits 2024-01-10 05:20:20 -08:00
gccframe.h Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
i386-mcount.S i386: Remove CET support 2024-01-09 13:55:51 -03:00
Implies Add float128 support for x86_64, x86. 2017-06-26 22:02:24 +00:00
isa.h Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
jmpbuf-offsets.h Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
jmpbuf-unwind.h Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
link-defines.sym elf: Remove Intel MPX support (lazy PLT, ld.so profile, and LD_AUDIT) 2021-10-11 11:14:02 -07:00
lshift.S Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
machine-gmon.h Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
Makefile mcheck: Align struct hdr to MALLOC_ALIGNMENT bytes [BZ #28068] 2021-07-12 18:13:32 -07:00
malloc-alignment.h Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
math-use-builtins-ffs.h string: Use builtins for ffs and ffsll 2024-02-01 09:31:33 -03:00
memchr.S Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
memcmp.S Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
memcopy.h Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
memcpy_chk.S Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
memcpy.S Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
memmove_chk.S Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
memmove.S Add i386 memset and memcpy assembly functions 2015-08-27 09:04:54 -07:00
mempcpy_chk.S Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
mempcpy.S Add i386 memset and memcpy assembly functions 2015-08-27 09:04:54 -07:00
memset_chk.S Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
memset.S Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
mp_clz_tab.c Update. 2002-03-14 20:48:50 +00:00
mul_1.S Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
preconfigure Move base_machine and machine settings from configure.ac to sysdeps preconfigure fragments. 2014-06-25 17:52:56 +00:00
pthread_spin_trylock.S Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
rawmemchr.S Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
rshift.S Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
setfpucw.c Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
setjmp.S i386: Remove CET support 2024-01-09 13:55:51 -03:00
stackguard-macros.h BZ #15754: CVE-2013-4788 2013-09-23 00:52:09 -04:00
stackinfo.h Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
start.S i386: Remove CET support 2024-01-09 13:55:51 -03:00
stpcpy.S Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
stpncpy.S i386: Don't define stpncpy alias when used in IFUNC [BZ #31768] 2024-05-20 19:35:00 -07:00
strcat.S Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
strchr.S Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
strchrnul.S Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
strcspn.S Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
string-inlines.c Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
string-opthr.h Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
strlen.c Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
strlen.S Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
strpbrk.S Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
strrchr.S Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
strspn.S Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
sub_n.S i386: Remove CET support 2024-01-09 13:55:51 -03:00
submul_1.S Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
symbol-hacks.h Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
sysdep.h i386: Remove CET support 2024-01-09 13:55:51 -03:00
tlsdesc.c Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
tlsdesc.sym Introduce TLS descriptors for i386 and x86_64. 2008-05-13 05:41:30 +00:00
tst-audit3.c Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
tst-audit3.h Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
tst-audit.h Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
tst-auditmod3a.c Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
tst-auditmod3b.c Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
tst-ld-sse-use.sh Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
unwind-arch.h Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
Versions Move __fentry__ version definition to sysdeps/{i386,x86_64} 2018-08-10 09:07:44 +02:00