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view gcc/testsuite/g++.dg/ext/constexpr-pr93549.C @ 145:1830386684a0
gcc-9.2.0
author | anatofuz |
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date | Thu, 13 Feb 2020 11:34:05 +0900 |
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// PR c++/93549 // { dg-do compile { target c++17 } } // { dg-options "-O2 -Wno-psabi -w" } struct simd { using shortx8 [[gnu::vector_size(16)]] = short; shortx8 data; constexpr simd (short x) : data{x, x, x, x, x, x, x, x} {} constexpr friend unsigned operator== (simd lhs, simd rhs) { shortx8 tmp = lhs.data == rhs.data; using ushort = unsigned short; auto bools = tmp ? ushort(1) : ushort(0); unsigned bits = 0; for (int i = 0; i < 8; ++i) bits |= bools[i] << i; return bits; } }; auto foo () { constexpr auto tmp = simd(1) == simd(2); return tmp; }