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target/arm: Implement SVE2 SHRN, RSHRN

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Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20210525010358.152808-27-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Richard Henderson 2021-05-24 18:02:52 -07:00 • committed by Peter Maydell
parent b87dbeebe6
commit 46d111b243
4 changed files with 236 additions and 2 deletions
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54
target/arm/sve_helper.c
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@ -1868,6 +1868,17 @@ void HELPER(NAME)(void *vd, void *vn, void *vg, uint32_t desc) \
when N is negative, add 2**M-1. */
#define DO_ASRD(N, M) ((N + (N < 0 ? ((__typeof(N))1 << M) - 1 : 0)) >> M)
static inline uint64_t do_urshr(uint64_t x, unsigned sh)
{
if (likely(sh < 64)) {
return (x >> sh) + ((x >> (sh - 1)) & 1);
} else if (sh == 64) {
return x >> 63;
} else {
return 0;
}
}
DO_ZPZI(sve_asr_zpzi_b, int8_t, H1, DO_SHR)
DO_ZPZI(sve_asr_zpzi_h, int16_t, H1_2, DO_SHR)
DO_ZPZI(sve_asr_zpzi_s, int32_t, H1_4, DO_SHR)
@ -1888,12 +1899,51 @@ DO_ZPZI(sve_asrd_h, int16_t, H1_2, DO_ASRD)
DO_ZPZI(sve_asrd_s, int32_t, H1_4, DO_ASRD)
DO_ZPZI_D(sve_asrd_d, int64_t, DO_ASRD)
#undef DO_SHR
#undef DO_SHL
#undef DO_ASRD
#undef DO_ZPZI
#undef DO_ZPZI_D
#define DO_SHRNB(NAME, TYPEW, TYPEN, OP) \
void HELPER(NAME)(void *vd, void *vn, uint32_t desc) \
{ \
intptr_t i, opr_sz = simd_oprsz(desc); \
int shift = simd_data(desc); \
for (i = 0; i < opr_sz; i += sizeof(TYPEW)) { \
TYPEW nn = *(TYPEW *)(vn + i); \
*(TYPEW *)(vd + i) = (TYPEN)OP(nn, shift); \
} \
}
#define DO_SHRNT(NAME, TYPEW, TYPEN, HW, HN, OP) \
void HELPER(NAME)(void *vd, void *vn, uint32_t desc) \
{ \
intptr_t i, opr_sz = simd_oprsz(desc); \
int shift = simd_data(desc); \
for (i = 0; i < opr_sz; i += sizeof(TYPEW)) { \
TYPEW nn = *(TYPEW *)(vn + HW(i)); \
*(TYPEN *)(vd + HN(i + sizeof(TYPEN))) = OP(nn, shift); \
} \
}
DO_SHRNB(sve2_shrnb_h, uint16_t, uint8_t, DO_SHR)
DO_SHRNB(sve2_shrnb_s, uint32_t, uint16_t, DO_SHR)
DO_SHRNB(sve2_shrnb_d, uint64_t, uint32_t, DO_SHR)
DO_SHRNT(sve2_shrnt_h, uint16_t, uint8_t, H1_2, H1, DO_SHR)
DO_SHRNT(sve2_shrnt_s, uint32_t, uint16_t, H1_4, H1_2, DO_SHR)
DO_SHRNT(sve2_shrnt_d, uint64_t, uint32_t, , H1_4, DO_SHR)
DO_SHRNB(sve2_rshrnb_h, uint16_t, uint8_t, do_urshr)
DO_SHRNB(sve2_rshrnb_s, uint32_t, uint16_t, do_urshr)
DO_SHRNB(sve2_rshrnb_d, uint64_t, uint32_t, do_urshr)
DO_SHRNT(sve2_rshrnt_h, uint16_t, uint8_t, H1_2, H1, do_urshr)
DO_SHRNT(sve2_rshrnt_s, uint32_t, uint16_t, H1_4, H1_2, do_urshr)
DO_SHRNT(sve2_rshrnt_d, uint64_t, uint32_t, , H1_4, do_urshr)
#undef DO_SHRNB
#undef DO_SHRNT
/* Fully general four-operand expander, controlled by a predicate.
*/
#define DO_ZPZZZ(NAME, TYPE, H, OP) \