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41 #include "pme_spline_work.h"
43 #include "gromacs/simd/simd.h"
44 #include "gromacs/utility/alignedallocator.h"
45 #include "gromacs/utility/basedefinitions.h"
46 #include "gromacs/utility/real.h"
47 #include "gromacs/utility/smalloc.h"
51 using namespace gmx; // TODO: Remove when this file is moved into gmx namespace
53 pme_spline_work* make_pme_spline_work(int gmx_unused order)
55 pme_spline_work* work;
57 #ifdef PME_SIMD4_SPREAD_GATHER
58 alignas(GMX_SIMD_ALIGNMENT) real tmp[GMX_SIMD4_WIDTH * 2];
60 Simd4Real real_mask_S0, real_mask_S1;
63 work = new (gmx::AlignedAllocationPolicy::malloc(sizeof(pme_spline_work))) pme_spline_work;
67 /* Generate bit masks to mask out the unused grid entries,
68 * as we only operate on order of the 8 grid entries that are
69 * load into 2 SIMD registers.
71 for (of = 0; of < 2 * GMX_SIMD4_WIDTH - (order - 1); of++)
73 for (i = 0; i < 2 * GMX_SIMD4_WIDTH; i++)
75 tmp[i] = (i >= of && i < of + order ? -1.0 : 1.0);
77 real_mask_S0 = load4(tmp);
78 real_mask_S1 = load4(tmp + GMX_SIMD4_WIDTH);
79 work->mask_S0[of] = (real_mask_S0 < zero_S);
80 work->mask_S1[of] = (real_mask_S1 < zero_S);
89 void destroy_pme_spline_work(pme_spline_work* work)
93 gmx::AlignedAllocationPolicy::free(work);