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| author | Richard Henderson <richard.henderson@linaro.org> | 2025-07-04 08:20:37 -0600 |
|---|---|---|
| committer | Peter Maydell <peter.maydell@linaro.org> | 2025-07-04 15:52:22 +0100 |
| commit | 3fd8ce429447db5d1c1302887c68bc23a73a8a81 (patch) | |
| tree | a4775ed45eac5b382e1a1ec211d1d0e84de6be02 | |
| parent | 56ddef77944b4441f199b5e15c8fc1a058fd3335 (diff) | |
| download | qemu-3fd8ce429447db5d1c1302887c68bc23a73a8a81.zip qemu-3fd8ce429447db5d1c1302887c68bc23a73a8a81.tar.gz qemu-3fd8ce429447db5d1c1302887c68bc23a73a8a81.tar.bz2 | |
target/arm: Split out do_whileg from helper_sve_whileg
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 20250704142112.1018902-75-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
| -rw-r--r-- | target/arm/tcg/sve_helper.c | 39 |
1 files changed, 20 insertions, 19 deletions
diff --git a/target/arm/tcg/sve_helper.c b/target/arm/tcg/sve_helper.c index 741d043..5e11e86 100644 --- a/target/arm/tcg/sve_helper.c +++ b/target/arm/tcg/sve_helper.c @@ -4138,34 +4138,35 @@ uint32_t HELPER(sve_whilel)(void *vd, uint32_t count, uint32_t pred_desc) return pred_count_test(oprbits, count, false); } -uint32_t HELPER(sve_whileg)(void *vd, uint32_t count, uint32_t pred_desc) +/* D must be cleared on entry. */ +static void do_whileg(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, invcount, oprbits = oprsz * 8; - uint64_t bits; - tcg_debug_assert(count <= oprbits); - - /* Begin with a zero predicate register. */ - memset(d, 0, sizeof(*d)); if (count) { - /* Set all of the requested bits. */ - bits = esz_mask; - if (oprbits & 63) { - bits &= MAKE_64BIT_MASK(0, oprbits & 63); - } + uint32_t i, invcount = oprbits - count; + uint64_t bits = esz_mask & MAKE_64BIT_MASK(invcount & 63, 64); - invcount = oprbits - count; - for (i = (oprsz - 1) / 8; i > invcount / 64; --i) { + for (i = invcount / 64; i < oprbits / 64; ++i) { d->p[i] = bits; bits = esz_mask; } - d->p[i] = bits & MAKE_64BIT_MASK(invcount & 63, 64); + if (oprbits & 63) { + d->p[i] = bits & MAKE_64BIT_MASK(0, oprbits & 63); + } } +} + +uint32_t HELPER(sve_whileg)(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_whileg(d, esz_mask, count, oprbits); return pred_count_test(oprbits, count, true); } |