diff options
| author | Richard Henderson <richard.henderson@linaro.org> | 2021-05-24 18:02:46 -0700 |
|---|---|---|
| committer | Peter Maydell <peter.maydell@linaro.org> | 2021-05-25 16:01:43 +0100 |
| commit | b8295dfb48e5672a66db7815ea3c0e0c40893028 (patch) | |
| tree | 3fe04ce8ff83b200b59247ea08f4f7cdf7dc3a5e /target/arm/sve_helper.c | |
| parent | 38650638fbc6749d08a73466d2772d5e26ae6185 (diff) | |
target/arm: Implement SVE2 integer add/subtract long with carry
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20210525010358.152808-21-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Diffstat (limited to 'target/arm/sve_helper.c')
| -rw-r--r-- | target/arm/sve_helper.c | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/target/arm/sve_helper.c b/target/arm/sve_helper.c index 5d084a1164..b63d84eef4 100644 --- a/target/arm/sve_helper.c +++ b/target/arm/sve_helper.c @@ -1269,6 +1269,40 @@ DO_ZZZW_ACC(sve2_uabal_d, uint64_t, uint32_t, , H1_4, DO_ABD) #undef DO_ZZZW_ACC +void HELPER(sve2_adcl_s)(void *vd, void *vn, void *vm, void *va, uint32_t desc) +{ + intptr_t i, opr_sz = simd_oprsz(desc); + int sel = H4(extract32(desc, SIMD_DATA_SHIFT, 1)); + uint32_t inv = -extract32(desc, SIMD_DATA_SHIFT + 1, 1); + uint32_t *a = va, *n = vn; + uint64_t *d = vd, *m = vm; + + for (i = 0; i < opr_sz / 8; ++i) { + uint32_t e1 = a[2 * i + H4(0)]; + uint32_t e2 = n[2 * i + sel] ^ inv; + uint64_t c = extract64(m[i], 32, 1); + /* Compute and store the entire 33-bit result at once. */ + d[i] = c + e1 + e2; + } +} + +void HELPER(sve2_adcl_d)(void *vd, void *vn, void *vm, void *va, uint32_t desc) +{ + intptr_t i, opr_sz = simd_oprsz(desc); + int sel = extract32(desc, SIMD_DATA_SHIFT, 1); + uint64_t inv = -(uint64_t)extract32(desc, SIMD_DATA_SHIFT + 1, 1); + uint64_t *d = vd, *a = va, *n = vn, *m = vm; + + for (i = 0; i < opr_sz / 8; i += 2) { + Int128 e1 = int128_make64(a[i]); + Int128 e2 = int128_make64(n[i + sel] ^ inv); + Int128 c = int128_make64(m[i + 1] & 1); + Int128 r = int128_add(int128_add(e1, e2), c); + d[i + 0] = int128_getlo(r); + d[i + 1] = int128_gethi(r); + } +} + #define DO_BITPERM(NAME, TYPE, OP) \ void HELPER(NAME)(void *vd, void *vn, void *vm, uint32_t desc) \ { \ |