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target/arm: Split out do_whilel from helper_sve_whilel

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Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20250704142112.1018902-74-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Richard Henderson 2025-07-04 08:20:36 -06:00 • committed by Peter Maydell
parent 91afd009ba
commit 56ddef7794
1 changed files with 16 additions and 10 deletions
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26
target/arm/tcg/sve_helper.c
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@ -4107,19 +4107,14 @@ static uint32_t pred_count_test(uint32_t elements, uint32_t count, bool invert)
return flags;
}
uint32_t HELPER(sve_whilel)(void *vd, uint32_t count, uint32_t pred_desc)
/* D must be cleared on entry. */
static void do_whilel(ARMPredicateReg *d, uint64_t esz_mask,
uint32_t count, uint32_t oprbits)
{
intptr_t oprsz = FIELD_EX32(pred_desc, PREDDESC, OPRSZ);
intptr_t esz = FIELD_EX32(pred_desc, PREDDESC, ESZ);
uint64_t esz_mask = pred_esz_masks[esz];
ARMPredicateReg *d = vd;
intptr_t i, oprbits = oprsz * 8;
tcg_debug_assert(count <= oprbits);
/* Begin with a zero predicate register. */
memset(d, 0, sizeof(*d));
if (count) {
uint32_t i;
/* Set all of the requested bits. */
for (i = 0; i < count / 64; ++i) {
d->p[i] = esz_mask;
@ -4128,7 +4123,18 @@ uint32_t HELPER(sve_whilel)(void *vd, uint32_t count, uint32_t pred_desc)
d->p[i] = MAKE_64BIT_MASK(0, count & 63) & esz_mask;
}
}
}
uint32_t HELPER(sve_whilel)(void *vd, uint32_t count, uint32_t pred_desc)
{
uint32_t oprsz = FIELD_EX32(pred_desc, PREDDESC, OPRSZ);
uint32_t esz = FIELD_EX32(pred_desc, PREDDESC, ESZ);
uint32_t oprbits = oprsz * 8;
uint64_t esz_mask = pred_esz_masks[esz];
ARMPredicateReg *d = vd;
memset(d, 0, sizeof(*d));
do_whilel(d, esz_mask, count, oprbits);
return pred_count_test(oprbits, count, false);
}