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

libstdc++-v3/ChangeLog:

	* include/experimental/bits/simd.h: Diagnose
	'std::experimental::parallelism_v2::simd_abi' as 'simd_abi'.
	On x86, diagnose _VecBuiltin<16>, _VecBuiltin<32>, and
	_VecBltnBtmsk<64> as 'simd_abi::[SSE]', 'simd_abi::[AVX]', and
	'simd_abi::AVX512' respectively.
	(simd_abi::_Scalar): Diagnose as 'simd_abi::scalar'.
	(simd_abi::_Fixed): Diagnose as 'simd_abi::fixed_size<N>'.
	(__odr_helper): Shorten implementation details (effectively
	hiding them).
	* include/experimental/bits/simd_detail.h: Diagnose
	'std::experimental::parallelism_v2' as 'stdₓ'.
---
 libstdc++-v3/include/experimental/bits/simd.h | 37 +++++--------------
 .../include/experimental/bits/simd_detail.h   |  2 +-
 2 files changed, 11 insertions(+), 28 deletions(-)


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