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| author | Matthias Kretz <m.kretz@gsi.de> | 2021-06-24 14:20:15 +0100 |
|---|---|---|
| committer | Jonathan Wakely <jwakely@redhat.com> | 2021-06-24 14:33:20 +0100 |
| commit | 5014f12509980d51cfbb34bb61b1605356592afd (patch) | |
| tree | f817a4a5ffe5e124a100b6db328cda515deb471e | |
| parent | 62a989ea66e8b1d4c3ed4218c5115e050072711a (diff) | |
| download | gcc-5014f12509980d51cfbb34bb61b1605356592afd.zip gcc-5014f12509980d51cfbb34bb61b1605356592afd.tar.gz gcc-5014f12509980d51cfbb34bb61b1605356592afd.tar.bz2 | |
libstdc++: Fix condition when AVX512F ldexp implementation is used
This improves codegen of ldexp if AVX512VL is available.
Signed-off-by: Matthias Kretz <m.kretz@gsi.de>
libstdc++-v3/ChangeLog:
* include/experimental/bits/simd_x86.h (_S_ldexp): The AVX512F
implementation doesn't require a _VecBltnBtmsk ABI tag, it
requires either a 64-Byte input (in which case AVX512F must be
available) or AVX512VL.
| -rw-r--r-- | libstdc++-v3/include/experimental/bits/simd_x86.h | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/libstdc++-v3/include/experimental/bits/simd_x86.h b/libstdc++-v3/include/experimental/bits/simd_x86.h index 305d7a9..5706bf6 100644 --- a/libstdc++-v3/include/experimental/bits/simd_x86.h +++ b/libstdc++-v3/include/experimental/bits/simd_x86.h @@ -2611,13 +2611,14 @@ template <typename _Abi> _S_ldexp(_SimdWrapper<_Tp, _Np> __x, __fixed_size_storage_t<int, _Np> __exp) { - if constexpr (__is_avx512_abi<_Abi>()) + if constexpr (sizeof(__x) == 64 || __have_avx512vl) { const auto __xi = __to_intrin(__x); constexpr _SimdConverter<int, simd_abi::fixed_size<_Np>, _Tp, _Abi> __cvt; const auto __expi = __to_intrin(__cvt(__exp)); - constexpr auto __k1 = _Abi::template _S_implicit_mask_intrin<_Tp>(); + using _Up = __bool_storage_member_type_t<_Np>; + constexpr _Up __k1 = _Np < sizeof(_Up) * __CHAR_BIT__ ? _Up((1ULL << _Np) - 1) : ~_Up(); if constexpr (sizeof(__xi) == 16) { if constexpr (sizeof(_Tp) == 8) |