On Wednesday 10 May 2017, René J.V. Bertin wrote: > If memory serves me well the last time I looked at the intrinsic > headerfiles shipped with clang on Mac they just defined macros expanding > to inline assembly. So yeah, that should work. > That is not how the simple intrinsics are defined any more. They instead use special SIMD extensions to tell the compiler to add two vectors of 8 integers together. When AVX2 is available that can be done with one instruction, but if -mavx2 is not used, then it will do it with SSE2 instead using 3 instructions or more.
`Allan _______________________________________________ Interest mailing list Interest@qt-project.org http://lists.qt-project.org/mailman/listinfo/interest
