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target/riscv: vector mask population count vmpopc

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Signed-off-by: LIU Zhiwei <zhiwei_liu@c-sky.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20200701152549.1218-51-zhiwei_liu@c-sky.com>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
This commit is contained in:
LIU Zhiwei 2020-07-01 23:25:38 +08:00 • committed by Alistair Francis
parent c21f34aebf
commit 2e88f551df
4 changed files with 55 additions and 0 deletions
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20
target/riscv/vector_helper.c
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@ -4542,3 +4542,23 @@ GEN_VEXT_MASK_VV(vmor_mm, DO_OR)
GEN_VEXT_MASK_VV(vmnor_mm, DO_NOR)
GEN_VEXT_MASK_VV(vmornot_mm, DO_ORNOT)
GEN_VEXT_MASK_VV(vmxnor_mm, DO_XNOR)
/* Vector mask population count vmpopc */
target_ulong HELPER(vmpopc_m)(void *v0, void *vs2, CPURISCVState *env,
uint32_t desc)
{
target_ulong cnt = 0;
uint32_t mlen = vext_mlen(desc);
uint32_t vm = vext_vm(desc);
uint32_t vl = env->vl;
int i;
for (i = 0; i < vl; i++) {
if (vm || vext_elem_mask(v0, mlen, i)) {
if (vext_elem_mask(vs2, mlen, i)) {
cnt++;
}
}
}
return cnt;
}