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libstdc++: Make <experimental/simd> depend on C++17

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Signed-off-by: Jonathan Wakely <jwakely@redhat.com>

libstdc++-v3/ChangeLog:

	* include/experimental/simd: Do not define anything pre-C++17.
This commit is contained in:
Jonathan Wakely 2021-06-30 21:35:51 +01:00
parent 996be6b670
commit 36adced3b6
1 changed files with 3 additions and 0 deletions
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libstdc++-v3/include/experimental/simd
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@ -33,6 +33,8 @@
#ifndef _GLIBCXX_EXPERIMENTAL_SIMD
#define _GLIBCXX_EXPERIMENTAL_SIMD
#if __cplusplus >= 201703L
#define __cpp_lib_experimental_parallel_simd 201803
#pragma GCC diagnostic push
@ -66,5 +68,6 @@
#pragma GCC diagnostic pop
#endif // C++17
#endif // _GLIBCXX_EXPERIMENTAL_SIMD
// vim: ft=cpp