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ircd::math: Simplify fmma template.

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This commit is contained in:
Jason Volk 2021-04-04 12:52:26 -07:00
parent e04d734959
commit a476df4ca1
1 changed files with 7 additions and 13 deletions
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20
include/ircd/math/fmma.h
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@ -13,9 +13,8 @@
namespace ircd::math
{
template<const struct fmma_opts &opts,
class T>
void fmma(T *, const T *, const T *, size_t = 0, size_t = 0);
template<class T>
void fmma(T *, const T *, const T *, const struct fmma_opts &);
}
/// Options for the template.
@ -24,29 +23,24 @@ struct ircd::math::fmma_opts
size_t cols { 0 };
size_t rows { 0 };
size_t tiles { 1 };
char polarity { 'x' };
};
/// Fused Matrix-Multiply & Accumulate
/// clang11 FMA vfmadd213ps/vfmadd231ps
/// clang11 FMA4 vfmaddps
template<const ircd::math::fmma_opts &opts,
class T>
template<class T>
inline void
ircd::math::fmma(T *const __restrict__ out,
const T *const __restrict__ in,
const T *const __restrict__ weight,
size_t cols,
size_t rows)
const struct fmma_opts &opts)
{
static const auto
const auto
&cols{opts.cols},
&rows{opts.rows},
&tiles{opts.tiles},
&lanes{simd::lanes<T>()};
cols = cols?: opts.cols;
rows = rows?: opts.rows;
std::swap(rows, opts.polarity == 'y'? cols: rows);
const auto width
{
cols / lanes / tiles