This reverts commit 2a669e79e1.

* With the Intel compiler on Linux, prefer ifort for the final link step 

icc has known problems with mixed-language builds that ifort can handle just fine. Fixes #1956

* Rename operands to put lda on the input/output constraint list

* Fix wrong constraints in inline assembly

for #2009

* Fix inline assembly constraints

rework indices to allow marking argument lda4 as input and output. For #2009

* Fix inline assembly constraints

rework indices to allow marking argument lda as input and output.

* Fix inline assembly constraints

* Fix inline assembly constraints

* Fix inline assembly constraints in Bulldozer TRSM kernels

rework indices to allow marking i,as and bs as both input and output (marked operand n1 as well for simplicity). For #2009

* Correct range_n limiting

same bug as seen in #1388, somehow missed in corresponding PR #1389

* Allow multithreading TRMV again

revert workaround introduced for issue #1332 as the actual cause appears to be my incorrect fix from #1262 (see #1388)

* Fix error introduced during cleanup

* Reduce list of kernels in the dynamic arch build

to make compilation complete reliably within the 1h limit again

* init

* move fix to right place

* Fix missing -c option in AVX512 test

* Fix AVX512 test always returning false due to missing compiler option

* Make x86_32 imply NO_AVX2, NO_AVX512 in addition to NO_AVX

fixes #2033

* Keep xcode8.3 for osx BINARY=32 build

as xcode10 deprecated i386

* Make sure that AVX512 is disabled in 32bit builds

for #2033

* Improve handling of NO_STATIC and NO_SHARED

to avoid surprises from defining either as zero. Fixes #2035 by addressing some concerns from #1422

* init

* address warning introed with #1814 et al

* Restore locking optimizations for OpenMP case

restore another accidentally dropped part of #1468 that was missed in #2004 to address performance regression reported in #1461

* HiSilicon tsv110 CPUs optimization branch

add HiSilicon tsv110 CPUs  optimization branch

* add TARGET support for  HiSilicon tsv110 CPUs

* add TARGET support for HiSilicon tsv110 CPUs

* add TARGET support for HiSilicon tsv110 CPUs

* Fix module definition conflicts between LAPACK and ReLAPACK

for #2043

* Do not compile in AVX512 check if AVX support is disabled

xgetbv is function depends on NO_AVX being undefined - we could change that too, but that combo is unlikely to work anyway

* ctest.c : add __POWERPC__ for PowerMac

* Fix crash in sgemm SSE/nano kernel on x86_64

Fix bug #2047.

Signed-off-by: Celelibi <celelibi@gmail.com>

* param.h : enable defines for PPC970 on DarwinOS

fixes:
gemm.c: In function 'sgemm_':
../common_param.h:981:18: error: 'SGEMM_DEFAULT_P' undeclared (first use in this function)
 #define SGEMM_P  SGEMM_DEFAULT_P
                  ^

* common_power.h: force DCBT_ARG 0 on PPC970 Darwin

without this, we see
../kernel/power/gemv_n.S:427:Parameter syntax error
and many more similar entries

that relates to this assembly command
dcbt 8, r24, r18

this change makes the DCBT_ARG = 0
and openblas builds through to completion on PowerMac 970
Tests pass

* Make TARGET=GENERIC compatible with DYNAMIC_ARCH=1

for issue #2048

* make DYNAMIC_ARCH=1 package work on TSV110.

* make DYNAMIC_ARCH=1 package work on TSV110

* Add Intel Denverton

for #2048

* Add Intel Denverton

* Change 64-bit detection as explained in #2056

* Trivial typo fix

as suggested in #2022

* Disable the AVX512 DGEMM kernel (again)

Due to as yet unresolved errors seen in #1955 and #2029

* Use POSIX getenv on Cygwin

The Windows-native GetEnvironmentVariable cannot be relied on, as
Cygwin does not always copy environment variables set through Cygwin
to the Windows environment block, particularly after fork().

* Fix for #2063: The DllMain used in Cygwin did not run the thread memory
pool cleanup upon THREAD_DETACH which is needed when compiled with
USE_TLS=1.

* Also call CloseHandle on each thread, as well as on the event so as to not leak thread handles.

* AIX asm syntax changes needed for shared object creation

* power9 makefile. dgemm based on power8 kernel with following changes : 32x unrolled 16x4 kernel and 8x4 kernel using (lxv stxv butterfly rank1 update). improvement from 17 to 22-23gflops. dtrmm cases were added into dgemm itself

* Expose CBLAS interfaces for I?MIN and I?MAX

* Build CBLAS interfaces for I?MIN and I?MAX

* Add declarations for ?sum and cblas_?sum

* Add interface for ?sum (derived from ?asum)

* Add ?sum

* Add implementations of ssum/dsum and csum/zsum

as trivial copies of asum/zsasum with the fabs calls replaced by fmov to preserve code structure

* Add ARM implementations of ?sum

(trivial copies of the respective ?asum with the fabs calls removed)

* Add ARM64 implementations of ?sum

as trivial copies of the respective ?asum kernels with the fabs calls removed

* Add ia64 implementation of ?sum

as trivial copy of asum with the fabs calls removed

* Add MIPS implementation of ?sum

as trivial copy of ?asum with the fabs calls removed

* Add MIPS64 implementation of ?sum

as trivial copy of ?asum with the fabs replaced by mov to preserve code structure

* Add POWER implementation of ?sum

as trivial copy of ?asum with the fabs replaced by fmr to preserve code structure

* Add SPARC implementation of ?sum

as trivial copy of ?asum with the fabs replaced by fmov to preserve code structure

* Add x86 implementation of ?sum

as trivial copy of ?asum with the fabs calls removed

* Add x86_64 implementation of ?sum

as trivial copy of ?asum with the fabs calls removed

* Add ZARCH implementation of ?sum

as trivial copies of the respective ?asum kernels with the ABS and vflpsb calls removed

* Detect 32bit environment on 64bit ARM hardware

for #2056, using same approach as #2058

* Add cmake defaults for ?sum kernels

* Add ?sum

* Add ?sum definitions for generic kernel

* Add declarations for ?sum

* Add -lm and disable EXPRECISION support on *BSD

fixes #2075

* Add in runtime CPU detection for POWER.

* snprintf define consolidated to common.h

* Support INTERFACE64=1

* Add support for INTERFACE64 and fix XERBLA calls

1. Replaced all instances of "int" with "blasint"
2. Added string length as "hidden" third parameter in calls to fortran XERBLA

* Correct length of name string in xerbla call

* Avoid out-of-bounds accesses in LAPACK EIG tests

see https://github.com/Reference-LAPACK/lapack/issues/333

* Correct INFO=4 condition

* Disable reallocation of work array in xSYTRF

as it appears to cause memory management problems (seen in the LAPACK tests)

* Disable repeated recursion on Ab_BR in ReLAPACK xGBTRF

due to crashes in LAPACK tests

* sgemm/strmm

* Update Changelog with changes from 0.3.6

* Increment version to 0.3.7.dev

* Increment version to 0.3.7.dev

* Misc. typo fixes

Found via `codespell -q 3 -w -L ith,als,dum,nd,amin,nto,wis,ba -S ./relapack,./kernel,./lapack-netlib`

* Correct argument of CPU_ISSET for glibc <2.5

fixes #2104

* conflict resolve

* Revert reference/ fixes

* Revert Changelog.txt typos

* Disable the SkyLakeX DGEMMITCOPY kernel as well

as a stopgap measure for https://github.com/numpy/numpy/issues/13401 as mentioned in #1955

* Disable DGEMMINCOPY as well for now

#1955

* init

* Fix errors in cpu enumeration with glibc 2.6

for #2114

* Change two http links to https

Closes #2109

* remove redundant code #2113

* Set up CI with Azure Pipelines

[skip ci]

* TST: add native POWER8 to CI

* add native POWER8 testing to
Travis CI matrix with ppc64le
os entry

* Update link to IBM MASS library, update cpu support status

* first try migrating one of the arm builds from travis

* fix tabbing in azure commands

* Update azure-pipelines.yml

take out offending lines (although stolen from https://github.com/conda-forge/opencv-feedstock azure-pipelines fiie)

* Update azure-pipelines.yml

* Update azure-pipelines.yml

* Update azure-pipelines.yml

* Update azure-pipelines.yml

* DOC: Add Azure CI status badge

* Add ARMV6 build to azure CI setup (#2122)

using aytekinar's Alpine image and docker script from the Travis setup

[skip ci]

* TST: Azure manylinux1 & clean-up

* remove some of the steps & comments
from the original Azure yml template

* modify the trigger section to use
develop since OpenBLAS primarily uses
this branch; use the same batching
behavior as downstream projects NumPy/
SciPy

* remove Travis emulated ARMv6 gcc build
because this now happens in Azure

* use documented Ubuntu vmImage name for Azure
and add in a manylinux1 test run to the matrix

[skip appveyor]

* Add NO_AFFINITY to available options on Linux, and set it to ON

to match the gmake default. Fixes second part of #2114

* Replace ISMIN and ISAMIN kernels on all x86_64 platforms (#2125)

* Mark iamax_sse.S as unsuitable for MIN due to issue #2116
* Use iamax.S rather than iamax_sse.S for ISMIN/ISAMIN on all x86_64 as workaround for #2116

* Move ARMv8 gcc build from Travis to Azure

* Move ARMv8 gcc build from Travis to Azure

* Update .travis.yml

* Test drone CI

* install make

* remove sudo

* Install gcc

* Install perl

* Install gfortran and add a clang job

* gfortran->gcc-gfortran

* Switch to ubuntu and parallel jobs

* apt update

* Fix typo

* update yes

* no need of gcc in clang build

* Add a cmake build as well

* Add cmake builds and print options

* build without lapack on cmake

* parallel build

* See if ubuntu 19.04 fixes the ICE

* Remove qemu armv8 builds

* arm32 build

* Fix typo

* TST: add SkylakeX AVX512 CI test

* adapt the C-level reproducer code for some
recent SkylakeX AVX512 kernel issues, provided
by Isuru Fernando and modified by Martin Kroeker,
for usage in the utest suite

* add an Intel SDE SkylakeX emulation utest run to
the Azure CI matrix; a custom Docker build was required
because Ubuntu image provided by Azure does not support
AVX512VL instructions

* Add option USE_LOCKING for single-threaded build with locking support

for calling from concurrent threads

* Add option USE_LOCKING for single-threaded build with locking support

* Add option USE_LOCKING for SMP-like locking in USE_THREAD=0 builds

* Add option USE_LOCKING but keep default settings intact

* Remove unrelated change

* Do not try ancient PGI hacks with recent versions of that compiler

should fix #2139

* Build and run utests in any case, they do their own checks for fortran availability

* Add softfp support in min/max kernels

fix for #1912

* Revert "Add softfp support in min/max kernels"

* Separate implementations of AMAX and IAMAX on arm

As noted in #1912 and comment on #1942, the combined implementation happens to "do the right thing" on hardfp, but cannot return both value and index on softfp where they would have to share the return register

* Ensure correct output for DAMAX with softfp

* Use generic kernels for complex (I)AMAX to support softfp

* improved zgemm power9 based on power8

* upload thread safety test folder

* hook up c++ thread safety test (main Makefile)

*  add c++ thread test option to Makefile.rule

* Document NO_AVX512 

for #2151

* sgemm pipeline improved, zgemm rewritten without inner packs, ABI lxvx v20 fixed with vs52

* Fix detection of AVX512 capable compilers in getarch

21eda8b5 introduced a check in getarch.c to test if the compiler is capable of
AVX512. This check currently fails, since the used __AVX2__ macro is only
defined if getarch itself was compiled with AVX2/AVX512 support. Make sure this
is the case by building getarch with -march=native on x86_64. It is only
supposed to run on the build host anyway.

* c_check: Unlink correct file

* power9 zgemm ztrmm optimized

* conflict resolve

* Add gfortran workaround for ABI violations in LAPACKE

for #2154 (see gcc bug 90329)

* Add gfortran workaround for ABI violations

for #2154 (see gcc bug 90329)

* Add gfortran workaround for potential ABI violation 

for #2154

* Update fc.cmake

* Remove any inadvertent use of -march=native from DYNAMIC_ARCH builds

from #2143, -march=native precludes use of more specific options like -march=skylake-avx512 in individual kernels, and defeats the purpose of dynamic arch anyway.

* Avoid unintentional activation of TLS code via USE_TLS=0

fixes #2149

* Do not force gcc options on non-gcc compilers

fixes compile failure with pgi 18.10 as reported on OpenBLAS-users

* Update Makefile.x86_64

* Zero ecx with a mov instruction

PGI assembler does not like the initialization in the constraints.

* Fix mov syntax

* new sgemm 8x16

* Update dtrmm_kernel_16x4_power8.S

* PGI compiler does not like -march=native

* Fix build on FreeBSD/powerpc64.

Signed-off-by: Piotr Kubaj <pkubaj@anongoth.pl>

* Fix build for PPC970 on FreeBSD pt. 1

FreeBSD needs DCBT_ARG=0 as well.

* Fix build for PPC970 on FreeBSD pt.2

FreeBSD needs those macros too.

* cgemm/ctrmm power9

* Utest needs CBLAS but not necessarily FORTRAN

* Add mingw builds to Appveyor config

* Add getarch flags to disable AVX on x86

(and other small fixes to match Makefile behaviour)

* Make disabling DYNAMIC_ARCH on unsupported systems work

needs to be unset in the cache for the change to have any effect

* Mingw32 needs leading underscore on object names

(also copy BUNDERSCORE settings for FORTRAN from the corresponding Makefile)

* Fix commit 87a2ccc
* Close #736

Ref #727