Signed-off-by: Matthias Kretz <m.kretz@gsi.de>

libstdc++-v3/ChangeLog:

	PR libstdc++/108856
	* include/experimental/bits/simd_builtin.h
	(_SimdImplBuiltin::_S_masked_unary): More efficient
	implementation of masked inc-/decrement for integers and floats
	without AVX2.
	* include/experimental/bits/simd_x86.h
	(_SimdImplX86::_S_masked_unary): New. Use AVX512 masked subtract
	builtins for masked inc-/decrement.
---
 .../include/experimental/bits/simd_builtin.h  | 27 +++++++-
 .../include/experimental/bits/simd_x86.h      | 68 +++++++++++++++++++
 2 files changed, 93 insertions(+), 2 deletions(-)


--
──────────────────────────────────────────────────────────────────────────
 Dr. Matthias Kretz                           https://mattkretz.github.io
 GSI Helmholtz Centre for Heavy Ion Research               https://gsi.de
 stdₓ::simd
──────────────────────────────────────────────────────────────────────────