From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by sourceware.org (Postfix, from userid 2181) id B825B388800F; Thu, 24 Jun 2021 13:34:38 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org B825B388800F MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset="utf-8" From: Jonathan Wakely To: gcc-cvs@gcc.gnu.org, libstdc++-cvs@gcc.gnu.org Subject: [gcc r12-1785] libstdc++: Fix condition when AVX512F ldexp implementation is used X-Act-Checkin: gcc X-Git-Author: Matthias Kretz X-Git-Refname: refs/heads/master X-Git-Oldrev: 62a989ea66e8b1d4c3ed4218c5115e050072711a X-Git-Newrev: 5014f12509980d51cfbb34bb61b1605356592afd Message-Id: <20210624133438.B825B388800F@sourceware.org> Date: Thu, 24 Jun 2021 13:34:38 +0000 (GMT) X-BeenThere: libstdc++-cvs@gcc.gnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Libstdc++-cvs mailing list List-Unsubscribe: , List-Archive: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 24 Jun 2021 13:34:38 -0000 https://gcc.gnu.org/g:5014f12509980d51cfbb34bb61b1605356592afd commit r12-1785-g5014f12509980d51cfbb34bb61b1605356592afd Author: Matthias Kretz Date: Thu Jun 24 14:20:15 2021 +0100 libstdc++: Fix condition when AVX512F ldexp implementation is used This improves codegen of ldexp if AVX512VL is available. Signed-off-by: Matthias Kretz 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. Diff: --- libstdc++-v3/include/experimental/bits/simd_x86.h | 5 +++-- 1 file 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 305d7a9fa54..5706bf63845 100644 --- a/libstdc++-v3/include/experimental/bits/simd_x86.h +++ b/libstdc++-v3/include/experimental/bits/simd_x86.h @@ -2611,13 +2611,14 @@ template _S_ldexp(_SimdWrapper<_Tp, _Np> __x, __fixed_size_storage_t __exp) { - if constexpr (__is_avx512_abi<_Abi>()) + if constexpr (sizeof(__x) == 64 || __have_avx512vl) { const auto __xi = __to_intrin(__x); constexpr _SimdConverter, _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)