diff options
| author | Igor Zamyatin <igor.zamyatin@intel.com> | 2014-03-13 11:10:22 -0700 |
|---|---|---|
| committer | H.J. Lu <hjl.tools@gmail.com> | 2014-03-13 11:19:08 -0700 |
| commit | 2d63a517e4084ec80403cd9f278690fa8b676cc4 (patch) | |
| tree | d5d5dd025d9a59bd41fedf9c16799271b5dbb722 /sysdeps/x86_64/configure.ac | |
| parent | 44c4e5d598bfcbb309f05ceb7a57ab02662e7f34 (diff) | |
| download | glibc-2d63a517e4084ec80403cd9f278690fa8b676cc4.tar glibc-2d63a517e4084ec80403cd9f278690fa8b676cc4.tar.gz glibc-2d63a517e4084ec80403cd9f278690fa8b676cc4.tar.bz2 glibc-2d63a517e4084ec80403cd9f278690fa8b676cc4.zip | |
Save and restore AVX-512 zmm registers to x86-64 ld.so
AVX-512 ISA adds 512-bit zmm registers. This patch updates
_dl_runtime_profile to pass zmm registers to run-time audit. It also
changes _dl_x86_64_save_sse and _dl_x86_64_restore_sse to upport zmm
registers, which are called when only when RTLD_PREPARE_FOREIGN_CALL
is used. Its performance impact is minimum.
* config.h.in (HAVE_AVX512_SUPPORT): New #undef.
(HAVE_AVX512_ASM_SUPPORT): Likewise.
* sysdeps/x86_64/bits/link.h (La_x86_64_zmm): New.
(La_x86_64_vector): Add zmm.
* sysdeps/x86_64/Makefile (tests): Add tst-audit10.
(modules-names): Add tst-auditmod10a and tst-auditmod10b.
($(objpfx)tst-audit10): New target.
($(objpfx)tst-audit10.out): Likewise.
(tst-audit10-ENV): New.
(AVX512-CFLAGS): Likewise.
(CFLAGS-tst-audit10.c): Likewise.
(CFLAGS-tst-auditmod10a.c): Likewise.
(CFLAGS-tst-auditmod10b.c): Likewise.
* sysdeps/x86_64/configure.ac: Set config-cflags-avx512,
HAVE_AVX512_SUPPORT and HAVE_AVX512_ASM_SUPPORT.
* sysdeps/x86_64/configure: Regenerated.
* sysdeps/x86_64/dl-trampoline.S (_dl_runtime_profile): Add
AVX-512 zmm register support.
(_dl_x86_64_save_sse): Likewise.
(_dl_x86_64_restore_sse): Likewise.
* sysdeps/x86_64/dl-trampoline.h: Updated to support different
size vector registers.
* sysdeps/x86_64/link-defines.sym (YMM_SIZE): New.
(ZMM_SIZE): Likewise.
* sysdeps/x86_64/tst-audit10.c: New file.
* sysdeps/x86_64/tst-auditmod10a.c: Likewise.
* sysdeps/x86_64/tst-auditmod10b.c: Likewise.
Diffstat (limited to 'sysdeps/x86_64/configure.ac')
| -rw-r--r-- | sysdeps/x86_64/configure.ac | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/sysdeps/x86_64/configure.ac b/sysdeps/x86_64/configure.ac index c682f93c3e..5e5d61b317 100644 --- a/sysdeps/x86_64/configure.ac +++ b/sysdeps/x86_64/configure.ac @@ -23,6 +23,30 @@ if test $libc_cv_cc_avx = yes; then fi LIBC_CONFIG_VAR([config-cflags-avx], [$libc_cv_cc_avx]) +dnl Check if -mavx512f works. +AC_CACHE_CHECK(for AVX512 support, libc_cv_cc_avx512, [dnl +LIBC_TRY_CC_OPTION([-mavx512f], [libc_cv_cc_avx512=yes], [libc_cv_cc_avx512=no]) +]) +if test $libc_cv_cc_avx512 = yes; then + AC_DEFINE(HAVE_AVX512_SUPPORT) +fi +LIBC_CONFIG_VAR([config-cflags-avx512], [$libc_cv_cc_avx512]) + +dnl Check if asm supports AVX512. +AC_CACHE_CHECK(for AVX512 support in assembler, libc_cv_asm_avx512, [dnl +cat > conftest.s <<\EOF + vmovdqu64 %zmm0, (%rsp) +EOF +if AC_TRY_COMMAND(${CC-cc} -c $ASFLAGS conftest.s 1>&AS_MESSAGE_LOG_FD); then + libc_cv_asm_avx512=yes +else + libc_cv_asm_avx512=no +fi +rm -f conftest*]) +if test $libc_cv_asm_avx512 == yes; then + AC_DEFINE(HAVE_AVX512_ASM_SUPPORT) +fi + dnl Check if -msse2avx works. AC_CACHE_CHECK(for AVX encoding of SSE instructions, libc_cv_cc_sse2avx, [dnl LIBC_TRY_CC_OPTION([-msse2avx], |