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target/riscv: rvv-1.0: slide instructions

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* Remove clear function from helper functions as the tail elements
  are unchanged in RVV 1.0.

Signed-off-by: Frank Chang <frank.chang@sifive.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20211210075704.23951-51-frank.chang@sifive.com>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
This commit is contained in:
Frank Chang 2021-12-10 15:56:36 +08:00 committed by Alistair Francis
parent 50f6696c0f
commit 6438ed61de
1 changed files with 12 additions and 7 deletions
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19
target/riscv/vector_helper.c
View file

@ -4430,17 +4430,22 @@ GEN_VEXT_VSLIDEUP_VX(vslideup_vx_d, uint64_t, H8)
void HELPER(NAME)(void *vd, void *v0, target_ulong s1, void *vs2, \
CPURISCVState *env, uint32_t desc) \
{ \
uint32_t vlmax = env_archcpu(env)->cfg.vlen; \
uint32_t vlmax = vext_max_elems(desc, ctzl(sizeof(ETYPE))); \
uint32_t vm = vext_vm(desc); \
uint32_t vl = env->vl; \
target_ulong offset = s1, i; \
target_ulong i_max, i; \
\
for (i = 0; i < vl; ++i) { \
target_ulong j = i + offset; \
if (!vm && !vext_elem_mask(v0, i)) { \
continue; \
i_max = MIN(s1 < vlmax ? vlmax - s1 : 0, vl); \
for (i = 0; i < i_max; ++i) { \
if (vm || vext_elem_mask(v0, i)) { \
*((ETYPE *)vd + H(i)) = *((ETYPE *)vs2 + H(i + s1)); \
} \
} \
\
for (i = i_max; i < vl; ++i) { \
if (vm || vext_elem_mask(v0, i)) { \
*((ETYPE *)vd + H(i)) = 0; \
} \
*((ETYPE *)vd + H(i)) = j >= vlmax ? 0 : *((ETYPE *)vs2 + H(j)); \
} \
}