From: eopXD <eop.c...@sifive.com>
Signed-off-by: eop Chen <eop.c...@sifive.com>
Reviewed-by: Frank Chang <frank.ch...@sifive.com>
Reviewed-by: Weiwei Li <liwei...@iscas.ac.cn>
---
target/riscv/insn_trans/trans_rvv.c.inc | 11 +++++++++++
target/riscv/vector_helper.c | 11 +++++++++++
2 files changed, 22 insertions(+)
diff --git a/target/riscv/insn_trans/trans_rvv.c.inc
b/target/riscv/insn_trans/trans_rvv.c.inc
index d15858fc6f..430847b0f9 100644
--- a/target/riscv/insn_trans/trans_rvv.c.inc
+++ b/target/riscv/insn_trans/trans_rvv.c.inc
@@ -1858,6 +1858,16 @@ do_opivx_gvec_shift(DisasContext *s, arg_rmrr *a,
GVecGen2sFn32 *gvec_fn,
}
if (a->vm && s->vl_eq_vlmax) {
+ if (s->vta && s->lmul < 0) {
+ /*
+ * tail elements may pass vlmax when lmul < 0
+ * set tail elements to 1s
+ */
+ uint32_t vlenb = s->cfg_ptr->vlen >> 3;
+ tcg_gen_gvec_ori(s->sew, vreg_ofs(s, a->rd),
+ vreg_ofs(s, a->rd), -1,
+ vlenb, vlenb);
+ }
TCGv_i32 src1 = tcg_temp_new_i32();
tcg_gen_trunc_tl_i32(src1, get_gpr(s, a->rs1, EXT_NONE));
@@ -1916,6 +1926,7 @@ static bool trans_##NAME(DisasContext *s, arg_rmrr *a)
\
\
data = FIELD_DP32(data, VDATA, VM, a->vm); \
data = FIELD_DP32(data, VDATA, LMUL, s->lmul); \
+ data = FIELD_DP32(data, VDATA, VTA, s->vta); \
tcg_gen_gvec_4_ptr(vreg_ofs(s, a->rd), vreg_ofs(s, 0), \
vreg_ofs(s, a->rs1), \
vreg_ofs(s, a->rs2), cpu_env, \
diff --git a/target/riscv/vector_helper.c b/target/riscv/vector_helper.c
index e00f9353b9..c1ae2ea2f1 100644
--- a/target/riscv/vector_helper.c
+++ b/target/riscv/vector_helper.c
@@ -1273,6 +1273,9 @@ void HELPER(NAME)(void *vd, void *v0, void *vs1,
\
{ \
uint32_t vm = vext_vm(desc); \
uint32_t vl = env->vl; \
+ uint32_t esz = sizeof(TS1); \
+ uint32_t total_elems = vext_get_total_elems(env, desc, esz); \
+ uint32_t vta = vext_vta(desc); \
uint32_t i; \
\
for (i = env->vstart; i < vl; i++) { \
@@ -1284,6 +1287,8 @@ void HELPER(NAME)(void *vd, void *v0, void *vs1,
\
*((TS1 *)vd + HS1(i)) = OP(s2, s1 & MASK); \
} \
env->vstart = 0; \
+ /* set tail elements to 1s */ \
+ vext_set_elems_1s(vd, vta, vl * esz, total_elems * esz); \
}
GEN_VEXT_SHIFT_VV(vsll_vv_b, uint8_t, uint8_t, H1, H1, DO_SLL, 0x7)
@@ -1308,6 +1313,10 @@ void HELPER(NAME)(void *vd, void *v0, target_ulong s1,
\
{ \
uint32_t vm = vext_vm(desc); \
uint32_t vl = env->vl; \
+ uint32_t esz = sizeof(TD); \
+ uint32_t total_elems = \
+ vext_get_total_elems(env, desc, esz); \
+ uint32_t vta = vext_vta(desc); \
uint32_t i; \
\
for (i = env->vstart; i < vl; i++) { \
@@ -1318,6 +1327,8 @@ void HELPER(NAME)(void *vd, void *v0, target_ulong s1,
\
*((TD *)vd + HD(i)) = OP(s2, s1 & MASK); \
} \
env->vstart = 0; \
+ /* set tail elements to 1s */ \
+ vext_set_elems_1s(vd, vta, vl * esz, total_elems * esz);\
}
GEN_VEXT_SHIFT_VX(vsll_vx_b, uint8_t, int8_t, H1, H1, DO_SLL, 0x7)
--
2.34.2
