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target/arm: Implement FMOPA, FMOPS (non-widening)

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Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20220708151540.18136-25-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Richard Henderson 2022-07-08 20:45:19 +05:30 • committed by Peter Maydell
parent bc4420d9bd
commit 558e956c71
4 changed files with 115 additions and 0 deletions
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69
target/arm/sme_helper.c
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@ -25,6 +25,7 @@
#include "exec/cpu_ldst.h"
#include "exec/exec-all.h"
#include "qemu/int128.h"
#include "fpu/softfloat.h"
#include "vec_internal.h"
#include "sve_ldst_internal.h"
@ -918,3 +919,71 @@ void HELPER(sme_addva_d)(void *vzda, void *vzn, void *vpn,
}
}
}
void HELPER(sme_fmopa_s)(void *vza, void *vzn, void *vzm, void *vpn,
void *vpm, void *vst, uint32_t desc)
{
intptr_t row, col, oprsz = simd_maxsz(desc);
uint32_t neg = simd_data(desc) << 31;
uint16_t *pn = vpn, *pm = vpm;
float_status fpst;
/*
* Make a copy of float_status because this operation does not
* update the cumulative fp exception status. It also produces
* default nans.
*/
fpst = *(float_status *)vst;
set_default_nan_mode(true, &fpst);
for (row = 0; row < oprsz; ) {
uint16_t pa = pn[H2(row >> 4)];
do {
if (pa & 1) {
void *vza_row = vza + tile_vslice_offset(row);
uint32_t n = *(uint32_t *)(vzn + H1_4(row)) ^ neg;
for (col = 0; col < oprsz; ) {
uint16_t pb = pm[H2(col >> 4)];
do {
if (pb & 1) {
uint32_t *a = vza_row + H1_4(col);
uint32_t *m = vzm + H1_4(col);
*a = float32_muladd(n, *m, *a, 0, vst);
}
col += 4;
pb >>= 4;
} while (col & 15);
}
}
row += 4;
pa >>= 4;
} while (row & 15);
}
}
void HELPER(sme_fmopa_d)(void *vza, void *vzn, void *vzm, void *vpn,
void *vpm, void *vst, uint32_t desc)
{
intptr_t row, col, oprsz = simd_oprsz(desc) / 8;
uint64_t neg = (uint64_t)simd_data(desc) << 63;
uint64_t *za = vza, *zn = vzn, *zm = vzm;
uint8_t *pn = vpn, *pm = vpm;
float_status fpst = *(float_status *)vst;
set_default_nan_mode(true, &fpst);
for (row = 0; row < oprsz; ++row) {
if (pn[H1(row)] & 1) {
uint64_t *za_row = &za[tile_vslice_index(row)];
uint64_t n = zn[row] ^ neg;
for (col = 0; col < oprsz; ++col) {
if (pm[H1(col)] & 1) {
uint64_t *a = &za_row[col];
*a = float64_muladd(n, zm[col], *a, 0, &fpst);
}
}
}
}
}