H.J. Lu ef8adeb041 x86: Add MathVec_Prefer_No_AVX512 to cpu-features [BZ #21967] ...

AVX512 functions in mathvec are used on machines with AVX512.  An AVX2
wrapper is also provided and it can be used when the AVX512 version
isn't profitable.  MathVec_Prefer_No_AVX512 is addded to cpu-features.
If glibc.tune.hwcaps=MathVec_Prefer_No_AVX512 is set in GLIBC_TUNABLES
environment variable, the AVX2 wrapper will be used.

Tested on x86-64 machines with and without AVX512.  Also verified
glibc.tune.hwcaps=MathVec_Prefer_No_AVX512 on AVX512 machine.

	[BZ #21967]
	* sysdeps/x86/cpu-features.h (bit_arch_MathVec_Prefer_No_AVX512):
	New.
	(index_arch_MathVec_Prefer_No_AVX512): Likewise.
	* sysdeps/x86/cpu-tunables.c (TUNABLE_CALLBACK (set_hwcaps)):
	Handle MathVec_Prefer_No_AVX512.
	* sysdeps/x86_64/fpu/multiarch/ifunc-mathvec-avx512.h
	(IFUNC_SELECTOR): Return AVX2 version if MathVec_Prefer_No_AVX512
	is set.

2017-09-12 07:54:47 -07:00

..

aarch64

Obsolete pow10 functions.

2017-09-01 21:13:18 +00:00

alpha

Obsolete pow10 functions.

2017-09-01 21:13:18 +00:00

arm

Obsolete pow10 functions.

2017-09-01 21:13:18 +00:00

generic

Define and use a libm_alias_float macro.

2017-09-11 23:21:25 +00:00

gnu

posix: Sync glob with gnulib [BZ #1062]

2017-09-08 09:39:13 +02:00

hppa

Obsolete pow10 functions.

2017-09-01 21:13:18 +00:00

i386

Remove remaining _HAVE_STRING_ARCH_* definitions (BZ #18858)

2017-09-06 14:35:23 -03:00

ia64

Prefer new libm function wrappers for !LIBM_SVID_COMPAT.

2017-09-05 23:35:55 +00:00

ieee754

Prefer new libm function wrappers for !LIBM_SVID_COMPAT.

2017-09-05 23:35:55 +00:00

init_array

Update copyright dates with scripts/update-copyrights.

2017-01-01 00:14:16 +00:00

m68k

Simplify HUGE_VAL definitions.

2017-08-31 15:50:50 +00:00

mach

hurd: Fix build without NO_HIDDEN

2017-09-12 01:34:19 +02:00

microblaze

Obsolete pow10 functions.

2017-09-01 21:13:18 +00:00

mips

Obsolete pow10 functions.

2017-09-01 21:13:18 +00:00

nios2

Obsolete pow10 functions.

2017-09-01 21:13:18 +00:00

nptl

Remove extra semicolons in struct pthread_mutex (bug 21804)

2017-07-24 12:22:05 +02:00

posix

hurd: Fix libc link

2017-09-03 04:36:29 +02:00

powerpc

Obsolete pow10 functions.

2017-09-01 21:13:18 +00:00

pthread

aio: Remove internal_function function attribute

2017-08-31 15:59:06 +02:00

s390

Obsolete pow10 functions.

2017-09-01 21:13:18 +00:00

sh

Obsolete pow10 functions.

2017-09-01 21:13:18 +00:00

sparc

Obsolete pow10 functions.

2017-09-01 21:13:18 +00:00

tile

Obsolete pow10 functions.

2017-09-01 21:13:18 +00:00

unix

Add thunderx2t99 and thunderx2t99p1 CPU names to tunables list

2017-09-08 11:02:09 -07:00

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

x86: Add MathVec_Prefer_No_AVX512 to cpu-features [BZ #21967]

2017-09-12 07:54:47 -07:00

x86_64

x86: Add MathVec_Prefer_No_AVX512 to cpu-features [BZ #21967]

2017-09-12 07:54:47 -07:00