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Implement v128::fma32f

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This commit is contained in:
Nekotekina 2020-06-05 17:51:34 +03:00
parent ebbf329b6a
commit 3b8e7d0967
3 changed files with 37 additions and 12 deletions
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31
Utilities/BEType.h
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@ -3,6 +3,7 @@
#include "types.h"
#include "util/endian.hpp"
#include <cstring>
#include <cmath>
#if __has_include(<bit>)
#include <bit>
@ -322,6 +323,36 @@ union alignas(16) v128
return fromD(_mm_cmpeq_pd(left.vd, right.vd));
}
static inline bool use_fma = false;
static inline v128 fma32f(v128 a, const v128& b, const v128& c)
{
#ifndef __FMA__
if (use_fma) [[likely]]
{
#ifdef _MSC_VER
a.vf = _mm_fmadd_ps(a.vf, b.vf, c.vf);
return a;
#else
__asm__("vfmadd213ps %[c], %[b], %[a]"
: [a] "+x" (a.vf)
: [b] "x" (b.vf)
, [c] "x" (c.vf));
return a;
#endif
}
for (int i = 0; i < 4; i++)
{
a._f[i] = std::fmaf(a._f[i], b._f[i], c._f[i]);
}
return a;
#else
a.vf = _mm_fmadd_ps(a.vf, b.vf, c.vf);
return a;
#endif
}
bool operator==(const v128& right) const
{
return _u64[0] == right._u64[0] && _u64[1] == right._u64[1];