glibc/sysdeps
H.J. Lu b2f6137ea5 i386: Replace assembly versions of e_expf with generic e_expf.c
This patch replaces i386 assembly versions of e_expf with generic
e_expf.c.  For workload-spec2017.wrf, on Nehalem, it improves
performance by:

                           Before            After     Improvement
reciprocal-throughput      55.5724          40.2664       38%
latency                    80.0687          60.8517       31%

On Skylake, it improves performance by:

                           Before            After     Improvement
reciprocal-throughput      62.4056          39.4188       58%
latency                    85.5496          59.6377       43%

On IvyBridge with --disable-multi-arch, it improves performance by:

                           Before            After     Improvement
reciprocal-throughput      133.707          40.3778       231%
latency                    149.191          63.2515       135%

	* sysdeps/i386/fpu/e_exp2f_data.c: Removed.
	* sysdeps/i386/fpu/e_expf.S: Likewise.
	* sysdeps/i386/fpu/math_errf.c: Likewise.
	* sysdeps/i386/fpu/w_expf.c: Likewise.
	* sysdeps/i386/i686/fpu/multiarch/e_expf-ia32.S: Likewise.
	* sysdeps/i386/i686/fpu/multiarch/e_expf-sse2.S: Likewise.
	* sysdeps/i386/i686/fpu/multiarch/w_expf.c: Likewise.
	* sysdeps/i386/fpu/libm-test-ulps: Updated for generic e_expf.c.
	* sysdeps/i386/i686/fpu/multiarch/libm-test-ulps: Likewise.
	* sysdeps/i386/i686/fpu/multiarch/Makefile (libm-sysdep_routines):
	Remove e_expf-ia32.
	(CFLAGS-e_expf-sse2.c): New.
	* sysdeps/i386/i686/fpu/multiarch/e_expf-sse2.c: New file.
	* sysdeps/i386/i686/fpu/multiarch/e_expf.c: Rewritten.
2017-10-22 07:54:50 -07:00
..
aarch64 [AARCH64] Rewrite elf_machine_load_address using _DYNAMIC symbol 2017-10-18 17:35:16 +01:00
alpha Use libm_alias_double for dbl-64 fma. 2017-10-04 20:32:48 +00:00
arm Update ARM libm-test-ulps. 2017-10-05 22:17:30 +00:00
generic Add _Float128 function aliases. 2017-10-18 17:37:18 +00:00
gnu hurd: Fix getifaddrs' and freeifaddrs' symbol exposition 2017-09-28 01:05:18 +02:00
hppa ld.so: Replace (&bootstrap_map) with BOOTSTRAP_MAP 2017-10-03 01:55:12 -07:00
i386 i386: Replace assembly versions of e_expf with generic e_expf.c 2017-10-22 07:54:50 -07:00
ia64 Add bits/floatn.h defines for more _FloatN / _FloatNx types. 2017-10-20 21:42:51 +00:00
ieee754 Add bits/floatn.h defines for more _FloatN / _FloatNx types. 2017-10-20 21:42:51 +00:00
init_array Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
m68k m68k: Update elf_machine_load_address for static PIE 2017-10-20 03:36:47 -07:00
mach Introduce NO_RTLD_HIDDEN, make hurd use it instead of NO_HIDDEN 2017-10-03 01:33:38 +02:00
microblaze Obsolete pow10 functions. 2017-09-01 21:13:18 +00:00
mips Add bits/floatn.h defines for more _FloatN / _FloatNx types. 2017-10-20 21:42:51 +00:00
nios2 Enable unwind info in libc-start.c and backtrace.c 2017-09-19 15:07:58 +01:00
nptl Remove add-ons mechanism. 2017-10-05 15:58:13 +00:00
posix sysconf: Fix missing definition of UIO_MAXIOV on Linux [BZ #22321] 2017-10-20 04:10:15 +02:00
powerpc Add bits/floatn.h defines for more _FloatN / _FloatNx types. 2017-10-20 21:42:51 +00:00
pthread aio: Remove internal_function function attribute 2017-08-31 15:59:06 +02:00
s390 S390: Regenerate ULPs 2017-10-05 12:50:49 +02:00
sh Enable unwind info in libc-start.c and backtrace.c 2017-09-19 15:07:58 +01:00
sparc Fix TLS relocations against local symbols on powerpc32, sparc32 and sparc64 2017-10-13 16:14:16 -03:00
tile Remove ancient __signbit inlines 2017-09-28 19:52:13 +01:00
unix posix: Fix improper assert in Linux posix_spawn (BZ#22273) 2017-10-20 16:25:59 -02:00
wordsize-32 Build divdi3 only for architecture that required it 2017-04-06 15:14:34 -03:00
wordsize-64 posix: Consolidate Linux glob implementation 2017-09-08 16:34:02 +02:00
x86 Add bits/floatn.h defines for more _FloatN / _FloatNx types. 2017-10-20 21:42:51 +00:00
x86_64 x86-64: Replace assembly versions of e_expf with generic e_expf.c 2017-10-22 07:49:55 -07:00