POWER: Fix complex dot function failures

There are some test failures in complex dot functions when compiling with gcc12.
The machine constraints used now do not update all the four elements in the
expected result array. Fixing this with a reduced level of optimization.
This is not changing any performance numbers but will be converted to C code in future.

Add check to use correct builtin name for older versions
of gcc10 compilers.

This patch fixes an issue when OpenBLAS is compiled for TARGET=POWER10
and the flag USE_THREAD is set to 0.

The function `num_cpu_avail` is only available when USE_THREAD=1,
so SMP is defined.

POWER10: Fix ZGEMM testcase failures

This patch fixes storing and restoring non volatile registers
in zgemm POWER10 kernel.

This patch makes use of compiler builtins and matches with assembly
performance. Tested with clang14 and gcc12.

This patch changes 32 bytes stores to two 16 bytes stores
to fix a recent degradation due to 32 bytes stores.

Unrolling a loop in dasum micro code to help in improving
POWER10 performance.

Power10: Fix for SBGEMM

While testing bfloat16 sbgemm kernel, there are some failures for odd value inputs due to updating result for
additional bytes.

Remove spurious casts from PPC parameters and fix compilation for older targets

While testing bfloat16 sbgemm kernel, there are some failures
for odd value inputs due to array access beyond the boundary.

This patch uses vector pair pointer for input load operation
which helps to generate power10 lxvp instructions.

This patch makes use of Matrix-Multiply Assist (MMA)
feature introduced in POWER ISA v3.1 for zgemv_n and zgemv_t.

This patch makes sure that recent POWER10 patches are used
only for little endian.

This patch makes use of new POWER10 vector pair instructions for
loads and stores.

This patch makes use of new POWER10 vector pair instructions for
loads and stores.

The LLVM and GCC teams agreed to rename the __builtin_mma_assemble_pair and
__builtin_mma_disassemble_pair built-ins to __builtin_vsx_assemble_pair and
__builtin_vsx_disassemble_pair respectively. This patch is to make
corresponding changes in dgemm kernel. Also made changes in
inputs to those builtins to avoid some potential typecasting issues.

Reference gcc commit id:77ef995c1fbcab76a2a69b9f4700bcfd005d8e62

This patch makes use of new POWER10 vector pair instructions for
loads and stores.

This patch makes use of new POWER10 vector pair instructions for
loads and stores.

This patch makes use of new POWER10 vector pair instructions for
loads and stores.

This patch makes use of new POWER10 vector pair instructions for
loads and stores.

This patch makes use of new POWER10 vector pair instructions for
loads and stores.

This patch aligns the stores to 32 byte boundary for scopy and dcopy
before entering into vector pair loop. For ccopy, changed the store
instructions to stxv to improve performance of unaligned cases.

POWER10: Improve axpy performance

This patch aligns the stores to 32 byte boundary for saxpy and daxpy
before entering into vector pair loop. Fox caxpy, changed the store
instructions to stxv to improve performance of unaligned cases.

in DTRSM and STRSM, to improve performance in Power9 and Power10.

Handling as 4x8 with vector pairs gives better performance than
existing code in POWER10.

This patch makes use of new POWER10 vector pair instructions for
loads and stores.

Changing the unroll factors for dgemm to 8 shows improved performance with
POWER10 MMA feature.   Also made some minor changes in sgemm for edge cases.

This patch makes use of new POWER10 vector pair instructions for
loads and stores.