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- From 1e7c859fbc49a3fa4e2b9057b576abde7611ef0a Mon Sep 17 00:00:00 2001
- From: Frank Chang <frank.chang@sifive.com>
- Date: Mon, 17 Aug 2020 14:45:17 +0800
- Subject: [PATCH 057/107] target/riscv: rvv-1.0: slide instructions
- * 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>
- ---
- target/riscv/vector_helper.c | 19 ++++++++++++-------
- 1 file changed, 12 insertions(+), 7 deletions(-)
- diff --git a/target/riscv/vector_helper.c b/target/riscv/vector_helper.c
- index 6af15eb8f2..745fb01aa1 100644
- --- a/target/riscv/vector_helper.c
- +++ b/target/riscv/vector_helper.c
- @@ -4639,17 +4639,22 @@ 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)); \
- } \
- }
-
- --
- 2.33.1
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