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target/arm: Fix 32-bit SMOPA

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While the 8-bit input elements are sequential in the input vector,
the 32-bit output elements are not sequential in the output matrix.
Do not attempt to compute 2 32-bit outputs at the same time.

Cc: qemu-stable@nongnu.org
Fixes: 23a5e3859f ("target/arm: Implement SME integer outer product")
Resolves: https://gitlab.com/qemu-project/qemu/-/issues/2083
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-id: 20240305163931.242795-1-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Richard Henderson 2024-03-05 06:39:31 -10:00 • committed by Peter Maydell
parent ddcc4b4b52
commit d572bcb222
4 changed files with 147 additions and 33 deletions
Download patch file Download diff file Expand all files Collapse all files

77
target/arm/tcg/sme_helper.c
View file

@ -1083,11 +1083,32 @@ void HELPER(sme_bfmopa)(void *vza, void *vzn, void *vzm, void *vpn,
}
}
typedef uint64_t IMOPFn(uint64_t, uint64_t, uint64_t, uint8_t, bool);
typedef uint32_t IMOPFn32(uint32_t, uint32_t, uint32_t, uint8_t, bool);
static inline void do_imopa_s(uint32_t *za, uint32_t *zn, uint32_t *zm,
uint8_t *pn, uint8_t *pm,
uint32_t desc, IMOPFn32 *fn)
{
intptr_t row, col, oprsz = simd_oprsz(desc) / 4;
bool neg = simd_data(desc);
static inline void do_imopa(uint64_t *za, uint64_t *zn, uint64_t *zm,
uint8_t *pn, uint8_t *pm,
uint32_t desc, IMOPFn *fn)
for (row = 0; row < oprsz; ++row) {
uint8_t pa = (pn[H1(row >> 1)] >> ((row & 1) * 4)) & 0xf;
uint32_t *za_row = &za[tile_vslice_index(row)];
uint32_t n = zn[H4(row)];
for (col = 0; col < oprsz; ++col) {
uint8_t pb = pm[H1(col >> 1)] >> ((col & 1) * 4);
uint32_t *a = &za_row[H4(col)];
*a = fn(n, zm[H4(col)], *a, pa & pb, neg);
}
}
}
typedef uint64_t IMOPFn64(uint64_t, uint64_t, uint64_t, uint8_t, bool);
static inline void do_imopa_d(uint64_t *za, uint64_t *zn, uint64_t *zm,
uint8_t *pn, uint8_t *pm,
uint32_t desc, IMOPFn64 *fn)
{
intptr_t row, col, oprsz = simd_oprsz(desc) / 8;
bool neg = simd_data(desc);
@ -1107,25 +1128,16 @@ static inline void do_imopa(uint64_t *za, uint64_t *zn, uint64_t *zm,
}
#define DEF_IMOP_32(NAME, NTYPE, MTYPE) \
static uint64_t NAME(uint64_t n, uint64_t m, uint64_t a, uint8_t p, bool neg) \
static uint32_t NAME(uint32_t n, uint32_t m, uint32_t a, uint8_t p, bool neg) \
{ \
uint32_t sum0 = 0, sum1 = 0; \
uint32_t sum = 0; \
/* Apply P to N as a mask, making the inactive elements 0. */ \
n &= expand_pred_b(p); \
sum0 += (NTYPE)(n >> 0) * (MTYPE)(m >> 0); \
sum0 += (NTYPE)(n >> 8) * (MTYPE)(m >> 8); \
sum0 += (NTYPE)(n >> 16) * (MTYPE)(m >> 16); \
sum0 += (NTYPE)(n >> 24) * (MTYPE)(m >> 24); \
sum1 += (NTYPE)(n >> 32) * (MTYPE)(m >> 32); \
sum1 += (NTYPE)(n >> 40) * (MTYPE)(m >> 40); \
sum1 += (NTYPE)(n >> 48) * (MTYPE)(m >> 48); \
sum1 += (NTYPE)(n >> 56) * (MTYPE)(m >> 56); \
if (neg) { \
sum0 = (uint32_t)a - sum0, sum1 = (uint32_t)(a >> 32) - sum1; \
} else { \
sum0 = (uint32_t)a + sum0, sum1 = (uint32_t)(a >> 32) + sum1; \
} \
return ((uint64_t)sum1 << 32) | sum0; \
sum += (NTYPE)(n >> 0) * (MTYPE)(m >> 0); \
sum += (NTYPE)(n >> 8) * (MTYPE)(m >> 8); \
sum += (NTYPE)(n >> 16) * (MTYPE)(m >> 16); \
sum += (NTYPE)(n >> 24) * (MTYPE)(m >> 24); \
return neg ? a - sum : a + sum; \
}
#define DEF_IMOP_64(NAME, NTYPE, MTYPE) \
@ -1151,16 +1163,17 @@ DEF_IMOP_64(umopa_d, uint16_t, uint16_t)
DEF_IMOP_64(sumopa_d, int16_t, uint16_t)
DEF_IMOP_64(usmopa_d, uint16_t, int16_t)
#define DEF_IMOPH(NAME) \
void HELPER(sme_##NAME)(void *vza, void *vzn, void *vzm, void *vpn, \
void *vpm, uint32_t desc) \
{ do_imopa(vza, vzn, vzm, vpn, vpm, desc, NAME); }
#define DEF_IMOPH(NAME, S) \
void HELPER(sme_##NAME##_##S)(void *vza, void *vzn, void *vzm, \
void *vpn, void *vpm, uint32_t desc) \
{ do_imopa_##S(vza, vzn, vzm, vpn, vpm, desc, NAME##_##S); }
DEF_IMOPH(smopa_s)
DEF_IMOPH(umopa_s)
DEF_IMOPH(sumopa_s)
DEF_IMOPH(usmopa_s)
DEF_IMOPH(smopa_d)
DEF_IMOPH(umopa_d)
DEF_IMOPH(sumopa_d)
DEF_IMOPH(usmopa_d)
DEF_IMOPH(smopa, s)
DEF_IMOPH(umopa, s)
DEF_IMOPH(sumopa, s)
DEF_IMOPH(usmopa, s)
DEF_IMOPH(smopa, d)
DEF_IMOPH(umopa, d)
DEF_IMOPH(sumopa, d)
DEF_IMOPH(usmopa, d)