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target/arm: Implement FMOPA (non-widening) for fp16

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Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20250704142112.1018902-105-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Peter Maydell
2025-07-04 15:53:23 +01:00
parent eba6a6f882
commit 1a039f94d3
4 changed files with 63 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files
target/arm/tcg/helper-sme.h
+6
View File
@@ -137,6 +137,8 @@ DEF_HELPER_FLAGS_5(sme_addva_d, TCG_CALL_NO_RWG, void, ptr, ptr, ptr, ptr, i32)
DEF_HELPER_FLAGS_7(sme_fmopa_w_h, TCG_CALL_NO_RWG,
void, ptr, ptr, ptr, ptr, ptr, env, i32)
DEF_HELPER_FLAGS_7(sme_fmopa_h, TCG_CALL_NO_RWG,
void, ptr, ptr, ptr, ptr, ptr, fpst, i32)
DEF_HELPER_FLAGS_7(sme_fmopa_s, TCG_CALL_NO_RWG,
void, ptr, ptr, ptr, ptr, ptr, fpst, i32)
DEF_HELPER_FLAGS_7(sme_fmopa_d, TCG_CALL_NO_RWG,
@@ -146,6 +148,8 @@ DEF_HELPER_FLAGS_7(sme_bfmopa_w, TCG_CALL_NO_RWG,
DEF_HELPER_FLAGS_7(sme_fmops_w_h, TCG_CALL_NO_RWG,
void, ptr, ptr, ptr, ptr, ptr, env, i32)
DEF_HELPER_FLAGS_7(sme_fmops_h, TCG_CALL_NO_RWG,
void, ptr, ptr, ptr, ptr, ptr, fpst, i32)
DEF_HELPER_FLAGS_7(sme_fmops_s, TCG_CALL_NO_RWG,
void, ptr, ptr, ptr, ptr, ptr, fpst, i32)
DEF_HELPER_FLAGS_7(sme_fmops_d, TCG_CALL_NO_RWG,
@@ -155,6 +159,8 @@ DEF_HELPER_FLAGS_7(sme_bfmops_w, TCG_CALL_NO_RWG,
DEF_HELPER_FLAGS_7(sme_ah_fmops_w_h, TCG_CALL_NO_RWG,
void, ptr, ptr, ptr, ptr, ptr, env, i32)
DEF_HELPER_FLAGS_7(sme_ah_fmops_h, TCG_CALL_NO_RWG,
void, ptr, ptr, ptr, ptr, ptr, fpst, i32)
DEF_HELPER_FLAGS_7(sme_ah_fmops_s, TCG_CALL_NO_RWG,
void, ptr, ptr, ptr, ptr, ptr, fpst, i32)
DEF_HELPER_FLAGS_7(sme_ah_fmops_d, TCG_CALL_NO_RWG,
target/arm/tcg/sme.decode
+2
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@@ -183,9 +183,11 @@ ADDVA_d 11000000 11 01000 1 ... ... ..... 00 ... @adda_64
### SME Outer Product
&op zad zn zm pm pn sub:bool
@op_16 ........ ... zm:5 pm:3 pn:3 zn:5 sub:1 ... zad:1 &op
@op_32 ........ ... zm:5 pm:3 pn:3 zn:5 sub:1 .. zad:2 &op
@op_64 ........ ... zm:5 pm:3 pn:3 zn:5 sub:1 . zad:3 &op
FMOPA_h 10000001 100 ..... ... ... ..... . 100 . @op_16
FMOPA_s 10000000 100 ..... ... ... ..... . 00 .. @op_32
FMOPA_d 10000000 110 ..... ... ... ..... . 0 ... @op_64
target/arm/tcg/sme_helper.c
+51
View File
@@ -1002,6 +1002,57 @@ void HELPER(sme_addva_d)(void *vzda, void *vzn, void *vpn,
}
}
static void do_fmopa_h(void *vza, void *vzn, void *vzm, uint16_t *pn,
uint16_t *pm, float_status *fpst, uint32_t desc,
uint16_t negx, int negf)
{
intptr_t row, col, oprsz = simd_maxsz(desc);
for (row = 0; row < oprsz; ) {
uint16_t pa = pn[H2(row >> 4)];
do {
if (pa & 1) {
void *vza_row = vza + tile_vslice_offset(row);
uint16_t n = *(uint32_t *)(vzn + H1_2(row)) ^ negx;
for (col = 0; col < oprsz; ) {
uint16_t pb = pm[H2(col >> 4)];
do {
if (pb & 1) {
uint16_t *a = vza_row + H1_2(col);
uint16_t *m = vzm + H1_2(col);
*a = float16_muladd(n, *m, *a, negf, fpst);
}
col += 2;
pb >>= 2;
} while (col & 15);
}
}
row += 2;
pa >>= 2;
} while (row & 15);
}
}
void HELPER(sme_fmopa_h)(void *vza, void *vzn, void *vzm, void *vpn,
void *vpm, float_status *fpst, uint32_t desc)
{
do_fmopa_h(vza, vzn, vzm, vpn, vpm, fpst, desc, 0, 0);
}
void HELPER(sme_fmops_h)(void *vza, void *vzn, void *vzm, void *vpn,
void *vpm, float_status *fpst, uint32_t desc)
{
do_fmopa_h(vza, vzn, vzm, vpn, vpm, fpst, desc, 1u << 15, 0);
}
void HELPER(sme_ah_fmops_h)(void *vza, void *vzn, void *vzm, void *vpn,
void *vpm, float_status *fpst, uint32_t desc)
{
do_fmopa_h(vza, vzn, vzm, vpn, vpm, fpst, desc, 0,
float_muladd_negate_product);
}
static void do_fmopa_s(void *vza, void *vzn, void *vzm, uint16_t *pn,
uint16_t *pm, float_status *fpst, uint32_t desc,
uint32_t negx, int negf)
target/arm/tcg/translate-sme.c
+4
View File
@@ -569,6 +569,10 @@ TRANS_FEAT(FMOPA_w_h, aa64_sme, do_outprod_env, a, MO_32,
!a->sub ? gen_helper_sme_fmopa_w_h
: !s->fpcr_ah ? gen_helper_sme_fmops_w_h
: gen_helper_sme_ah_fmops_w_h)
TRANS_FEAT(FMOPA_h, aa64_sme_f16f16, do_outprod_fpst, a, MO_16, FPST_ZA_F16,
!a->sub ? gen_helper_sme_fmopa_h
: !s->fpcr_ah ? gen_helper_sme_fmops_h
: gen_helper_sme_ah_fmops_h)
TRANS_FEAT(FMOPA_s, aa64_sme, do_outprod_fpst, a, MO_32, FPST_ZA,
!a->sub ? gen_helper_sme_fmopa_s
: !s->fpcr_ah ? gen_helper_sme_fmops_s