Bug #76429 [Com]: zend_accelerator_util_funcs.c error: unknown register name ‘%ymm0’ in ‘asm

Edit report at https://bugs.php.net/bug.php?id=76429&edit=1 ID: 76429 Comment by: spam2 at rhsoft dot net Reported by: eva2000 at centminmod dot com Summary: zend_accelerator_util_funcs.c error: unknown register name ‘%ymm0’ in ‘asm Status: Assigned Type: Bug Package: opcache Operating System: centos 7.5 PHP Version: 7.3.0alpha1 Assigned To: laruence Block user comment: N Private report: N New Comment: @laruence@php.net what i said is that -mavx ist a GCC tuning-option which is unrelated to explicit AVX instructions in the code itself if AVX in fact is not available on the CPU and defined(__AVX__) is true there is something wrong in the detection or the logic "defined(__AVX__) || defined(__SSE2__)" but -mavx or -march don't change anything here because these are GCC flags for automatically use AVX on not hand-optimized code like transform SSE-code to AVX or auto-vectorization -mavx / -march are related to https://gcc.gnu.org/projects/tree-ssa/vectorization.html and not to http://git.php.net/?p=php-src.git;a=commit;h=5c05870ef65834f5a2c5cb5baddee07cba9399dc Previous Comments: ------------------------------------------------------------------------ [2018-06-11 13:05:37] laruence@php.net @spam2 at rhsoft dot net I am not sure I understand you correctly. I am asking you to try to figure out why __AVX__ is defined but ymm0 is not supported by add -mavx or gcc -c -Q -march=core-avx2 --help=target ------------------------------------------------------------------------ [2018-06-11 09:43:47] spam2 at rhsoft dot net laruence@php.net -mavx / -march are completly irrelevant to the AVX support in the code because one is using a AVX optimized branch if the CPU supports it at runtime for generic binaries and the other is auto-optimization by the complier for code which is not hand optimized and non-generic binaries ------------------------------------------------------------------------ [2018-06-11 03:45:35] laruence@php.net you may try to add -mavx to your configuration... and, you are trying compile with -march=core-avx2 which is not the same as -march=native which you are debugging thanks ------------------------------------------------------------------------ [2018-06-09 13:55:55] cmb@php.net It seems that AVX support has been introduced with commit 5c05870[1]. @laruence, could you please have a look at this issue? [1] <http://git.php.net/?p=php-src.git;a=commit;h=5c05870ef65834f5a2c5cb5baddee07cba9399dc> ------------------------------------------------------------------------ [2018-06-08 01:16:53] eva2000 at centminmod dot com Description: ------------ Test source compile of PHP 7.3.0alpha1 results in failure at opcache section but only on Intel Xeon Gold Skylake server with CentOS 7.5 64bit (running in Ubuntu 18.04 LTS with LXD 3.1 based CentOS 7.5 container https://github.com/centminmod/centminmod-lxd). PHP 7.3.0alpha + Zend Opcache successfully compiles on Xeon E3-1270v1 Sandybridge system though. Both Xeon Gold Skylake and Xeon E3-1270v1 systems using CentOS 7.5 GCC 4.8.5 make stage: /bin/sh /svr-setup/php-7.3.0alpha1/fpm-build/libtool --silent --preserve-dup-deps --mode=compile ccache /usr/bin/gcc -DZEND_ENABLE_STATIC_TSRMLS_CACHE=1 -Iext/opcache/ -I/svr-setup/php-7.3.0alpha1/ext/opcache/ -DPHP_ATOM_INC -I/svr-setup/php-7.3.0alpha1/fpm-build/include -I/svr-setup/php-7.3.0alpha1/fpm-build/main -I/svr-setup/php-7.3.0alpha1 -I/svr-setup/php-7.3.0alpha1/fpm-build/ext/date/lib -I/svr-setup/php-7.3.0alpha1/ext/date/lib -I/usr/include/libxml2 -I/usr/include/enchant -I/usr/X11 -I/usr/include/freetype2 -I/usr/include/imap -I/svr-setup/php-7.3.0alpha1/ext/mbstring/oniguruma -I/svr-setup/php-7.3.0alpha1/fpm-build/ext/mbstring/oniguruma -I/svr-setup/php-7.3.0alpha1/ext/mbstring/libmbfl -I/svr-setup/php-7.3.0alpha1/fpm-build/ext/mbstring/libmbfl -I/svr-setup/php-7.3.0alpha1/ext/mbstring/libmbfl/mbfl -I/svr-setup/php-7.3.0alpha1/fpm-build/ext/mbstring/libmbfl/mbfl -I/svr-setup/php-7.3.0alpha1/ext/sqlite3/libsqlite -I/usr/include/pspell -I/usr/local/include -I/svr-set! up/php-7.3.0alpha1/fpm-build/TSRM -I/svr-setup/php-7.3.0alpha1/fpm-build/Zend -I/svr-setup/php-7.3.0alpha1/main -I/svr-setup/php-7.3.0alpha1/Zend -I/svr-setup/php-7.3.0alpha1/TSRM -I/svr-setup/php-7.3.0alpha1/fpm-build/ -I/usr/include -O3 -m64 -march=core-avx2 -pipe -gsplit-dwarf -fvisibility=hidden -DZEND_SIGNALS -c /svr-setup/php-7.3.0alpha1/ext/opcache/zend_accelerator_util_funcs.c -o ext/opcache/zend_accelerator_util_funcs.lo /svr-setup/php-7.3.0alpha1/ext/opcache/zend_accelerator_util_funcs.c: In function ‘zend_accel_load_script’: /svr-setup/php-7.3.0alpha1/ext/opcache/zend_accelerator_util_funcs.c:662:2: error: unknown register name ‘%ymm1’ in ‘asm’ __asm__ volatile ( ^ /svr-setup/php-7.3.0alpha1/ext/opcache/zend_accelerator_util_funcs.c:662:2: error: unknown register name ‘%ymm0’ in ‘asm’ make: *** [ext/opcache/zend_accelerator_util_funcs.lo] Error 1 lscpu Architecture: x86_64 CPU op-mode(s): 32-bit, 64-bit Byte Order: Little Endian CPU(s): 4 On-line CPU(s) list: 0-3 Thread(s) per core: 1 Core(s) per socket: 4 Socket(s): 1 NUMA node(s): 1 Vendor ID: GenuineIntel CPU family: 6 Model: 94 Model name: Intel Core Processor (Skylake, IBRS) Stepping: 3 CPU MHz: 2099.998 BogoMIPS: 4199.99 Hypervisor vendor: KVM Virtualization type: full L1d cache: 32K L1i cache: 32K L2 cache: 4096K NUMA node0 CPU(s): 0-3 Flags: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ss ht syscall nx pdpe1gb rdtscp lm constant_tsc rep_good nopl xtopology cpuid pni pclmulqdq ssse3 fma cx16 pcid sse4_1 sse4_2 x2apic movbe popcnt tsc_deadline_timer aes xsave avx f16c rdrand hypervisor lahf_lm abm 3dnowprefetch invpcid_single pti fsgsbase tsc_adjust bmi1 hle avx2 smep bmi2 erms invpcid rtm mpx avx512f avx512dq rdseed adx smap clflushopt clwb avx512cd avx512bw gcc -c -Q -march=native --help=target The following options are target specific: -m128bit-long-double [disabled] -m32 [disabled] -m3dnow [disabled] -m3dnowa [disabled] -m64 [enabled] -m80387 [enabled] -m8bit-idiv [disabled] -m96bit-long-double [enabled] -mabi= sysv -mabm [enabled] -maccumulate-outgoing-args [disabled] -maddress-mode= short -madx [enabled] -maes [enabled] -malign-double [disabled] -malign-functions= 0 -malign-jumps= 0 -malign-loops= 0 -malign-stringops [enabled] -mandroid [disabled] -march= core-avx2 -masm= att -mavx [enabled] -mavx2 [enabled] -mavx256-split-unaligned-load [disabled] -mavx256-split-unaligned-store [disabled] -mbionic [disabled] -mbmi [enabled] -mbmi2 [enabled] -mbranch-cost= 0 -mcld [disabled] -mcmodel= 32 -mcpu= -mcrc32 [disabled] -mcx16 [enabled] -mdispatch-scheduler [disabled] -mf16c [enabled] -mfancy-math-387 [enabled] -mfentry [enabled] -mfma [enabled] -mfma4 [disabled] -mforce-drap [disabled] -mfp-ret-in-387 [enabled] -mfpmath= 387 -mfsgsbase [enabled] -mfunction-return= keep -mfused-madd -mfxsr [enabled] -mglibc [enabled] -mhard-float [enabled] -mhle [enabled] -mieee-fp [enabled] -mincoming-stack-boundary= 0 -mindirect-branch-register [disabled] -mindirect-branch= keep -minline-all-stringops [disabled] -minline-stringops-dynamically [disabled] -mintel-syntax -mlarge-data-threshold= 0x10000 -mlong-double-64 [disabled] -mlong-double-80 [enabled] -mlwp [disabled] -mlzcnt [enabled] -mmmx [disabled] -mmovbe [enabled] -mms-bitfields [disabled] -mno-align-stringops [disabled] -mno-fancy-math-387 [disabled] -mno-push-args [disabled] -mno-red-zone [disabled] -mno-sse4 [disabled] -momit-leaf-frame-pointer [disabled] -mpc32 [disabled] -mpc64 [disabled] -mpc80 [disabled] -mpclmul [enabled] -mpku [disabled] -mpopcnt [enabled] -mprefer-avx128 [disabled] -mpreferred-stack-boundary= 0 -mprfchw [enabled] -mpush-args [enabled] -mrdrnd [enabled] -mrdseed [enabled] -mrecip [disabled] -mrecip= -mred-zone [enabled] -mregparm= 0 -mrtd [disabled] -mrtm [enabled] -msahf [enabled] -msoft-float [disabled] -msse [enabled] -msse2 [enabled] -msse2avx [disabled] -msse3 [enabled] -msse4 [enabled] -msse4.1 [enabled] -msse4.2 [enabled] -msse4a [disabled] -msse5 -msseregparm [disabled] -mssse3 [enabled] -mstack-arg-probe [disabled] -mstackrealign [enabled] -mstringop-strategy= [default] -mtbm [disabled] -mtls-dialect= gnu -mtls-direct-seg-refs [enabled] -mtune= generic -muclibc [disabled] -mveclibabi= [default] -mvect8-ret-in-mem [disabled] -mvzeroupper [disabled] -mx32 [disabled] -mxop [disabled] -mxsave [enabled] -mxsaveopt [enabled] configure ../configure --enable-fpm --enable-opcache --enable-intl --enable-pcntl --with-mcrypt --with-snmp --enable-embed=shared --with-mhash --with-zlib --with-gettext --enable-exif --enable-zip --with-libzip --with-bz2 --enable-soap --enable-sockets --enable-sysvmsg --enable-sysvsem --enable-sysvshm --enable-shmop --with-pear --enable-mbstring --with-openssl --with-mysql=mysqlnd --with-libdir=lib64 --with-mysqli=mysqlnd --with-mysql-sock=/var/lib/mysql/mysql.sock --with-curl --with-gd --with-xmlrpc --enable-bcmath --enable-calendar --enable-ftp --enable-gd-native-ttf --with-freetype-dir=/usr --with-jpeg-dir=/usr --with-png-dir=/usr --with-xpm-dir=/usr --with-webp-dir=/usr --with-t1lib=/usr --enable-pdo --with-pdo-sqlite --with-pdo-mysql=mysqlnd --enable-inline-optimization --with-imap --with-imap-ssl --with-kerberos --with-readline --with-libedit --with-gmp --with-pspell --with-tidy --with-enchant --with-fpm-user=nginx --with-fpm-group=nginx --disable-fileinfo --with-ldap --with-l! dap-sasl --with-password-argon2 --with-sodium --with-config-file-scan-dir=/etc/centminmod/php.d --with-xsl Expected result: ---------------- expected it to compile successfully like it does with PHP 7.2.6 and 7.3.0alpha1 on non-skylake cpus i.e. Xeon E3-1270v1 Sandybridge compiles fine php -v PHP 7.3.0alpha1 (cli) (built: Jun 8 2018 00:51:36) ( NTS ) Copyright (c) 1997-2018 The PHP Group Zend Engine v3.3.0-dev, Copyright (c) 1998-2018 Zend Technologies with Zend OPcache v7.3.0alpha1, Copyright (c) 1999-2018, by Zend Technologies php --ri "Zend Opcache" Zend OPcache Opcode Caching => Disabled Optimization => Disabled SHM Cache => Enabled File Cache => Disabled Startup Failed => Opcode Caching is disabled for CLI Directive => Local Value => Master Value opcache.enable => On => On opcache.use_cwd => On => On opcache.validate_timestamps => On => On opcache.validate_permission => Off => Off opcache.validate_root => Off => Off opcache.dups_fix => Off => Off opcache.revalidate_path => Off => Off opcache.log_verbosity_level => 1 => 1 opcache.memory_consumption => 784 => 784 opcache.interned_strings_buffer => 8 => 8 opcache.max_accelerated_files => 65407 => 65407 opcache.max_wasted_percentage => 5 => 5 opcache.consistency_checks => 0 => 0 opcache.force_restart_timeout => 180 => 180 opcache.revalidate_freq => 180 => 180 opcache.file_update_protection => 2 => 2 opcache.preferred_memory_model => no value => no value opcache.blacklist_filename => no value => no value opcache.max_file_size => 0 => 0 opcache.protect_memory => 0 => 0 opcache.save_comments => 1 => 1 opcache.optimization_level => 0x7FFEBFFF => 0x7FFEBFFF opcache.opt_debug_level => 0 => 0 opcache.enable_file_override => On => On opcache.enable_cli => Off => Off opcache.error_log => no value => no value opcache.restrict_api => no value => no value opcache.lockfile_path => /tmp => /tmp opcache.file_cache => no value => no value opcache.file_cache_only => 0 => 0 opcache.file_cache_consistency_checks ------------------------------------------------------------------------ -- Edit this bug report at https://bugs.php.net/bug.php?id=76429&edit=1