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target/arm: Fix sve_uzp_p vs odd vector lengths 

Missed out on compressing the second half of a predicate
with length vl % 512 > 256.

Adjust all of the x + (y << s) to x | (y << s) as a
general style fix.  Drop the extract64 because the input
uint64_t are known to be already zero-extended from the
current size of the predicate.

Reported-by: Laurent Desnogues <laurent.desnogues@gmail.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20210309155305.11301-2-richard.henderson@linaro.org
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Richard Henderson 2021-03-09 07:52:58 -08:00 committed by Peter Maydell
parent fe2f5cbcfc
commit 226e6c046c
1 changed files with 21 additions and 9 deletions
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30
target/arm/sve_helper.c
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@ -1939,7 +1939,7 @@ void HELPER(sve_uzp_p)(void *vd, void *vn, void *vm, uint32_t pred_desc)
if (oprsz <= 8) {
l = compress_bits(n[0] >> odd, esz);
h = compress_bits(m[0] >> odd, esz);
d[0] = extract64(l + (h << (4 * oprsz)), 0, 8 * oprsz);
d[0] = l | (h << (4 * oprsz));
} else {
ARMPredicateReg tmp_m;
intptr_t oprsz_16 = oprsz / 16;
@ -1953,23 +1953,35 @@ void HELPER(sve_uzp_p)(void *vd, void *vn, void *vm, uint32_t pred_desc)
h = n[2 * i + 1];
l = compress_bits(l >> odd, esz);
h = compress_bits(h >> odd, esz);
d[i] = l + (h << 32);
d[i] = l | (h << 32);
}
/* For VL which is not a power of 2, the results from M do not
align nicely with the uint64_t for D. Put the aligned results
from M into TMP_M and then copy it into place afterward. */
/*
* For VL which is not a multiple of 512, the results from M do not
* align nicely with the uint64_t for D. Put the aligned results
* from M into TMP_M and then copy it into place afterward.
*/
if (oprsz & 15) {
d[i] = compress_bits(n[2 * i] >> odd, esz);
int final_shift = (oprsz & 15) * 2;
l = n[2 * i + 0];
h = n[2 * i + 1];
l = compress_bits(l >> odd, esz);
h = compress_bits(h >> odd, esz);
d[i] = l | (h << final_shift);
for (i = 0; i < oprsz_16; i++) {
l = m[2 * i + 0];
h = m[2 * i + 1];
l = compress_bits(l >> odd, esz);
h = compress_bits(h >> odd, esz);
tmp_m.p[i] = l + (h << 32);
tmp_m.p[i] = l | (h << 32);
}
tmp_m.p[i] = compress_bits(m[2 * i] >> odd, esz);
l = m[2 * i + 0];
h = m[2 * i + 1];
l = compress_bits(l >> odd, esz);
h = compress_bits(h >> odd, esz);
tmp_m.p[i] = l | (h << final_shift);
swap_memmove(vd + oprsz / 2, &tmp_m, oprsz / 2);
} else {
@ -1978,7 +1990,7 @@ void HELPER(sve_uzp_p)(void *vd, void *vn, void *vm, uint32_t pred_desc)
h = m[2 * i + 1];
l = compress_bits(l >> odd, esz);
h = compress_bits(h >> odd, esz);
d[oprsz_16 + i] = l + (h << 32);
d[oprsz_16 + i] = l | (h << 32);
}
}
}