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[PATCH qemu v3 09/14] target/riscv: rvv: Add tail agnostic for vector in


From: ~eopxd
Subject: [PATCH qemu v3 09/14] target/riscv: rvv: Add tail agnostic for vector integer merge and move instructions
Date: Wed, 23 Mar 2022 03:58:35 -0000

From: eopXD <eop.chen@sifive.com>

Signed-off-by: eop Chen <eop.chen@sifive.com>
Reviewed-by: Frank Chang <frank.chang@sifive.com>
---
 target/riscv/insn_trans/trans_rvv.c.inc |  4 ++++
 target/riscv/vector_helper.c            | 28 +++++++++++++++++++++++++
 2 files changed, 32 insertions(+)

diff --git a/target/riscv/insn_trans/trans_rvv.c.inc 
b/target/riscv/insn_trans/trans_rvv.c.inc
index e014bdac95..88912d9864 100644
--- a/target/riscv/insn_trans/trans_rvv.c.inc
+++ b/target/riscv/insn_trans/trans_rvv.c.inc
@@ -2082,6 +2082,7 @@ static bool trans_vmv_v_v(DisasContext *s, arg_vmv_v_v *a)
                              MAXSZ(s), MAXSZ(s));
         } else {
             uint32_t data = FIELD_DP32(0, VDATA, LMUL, s->lmul);
+            data = FIELD_DP32(data, VDATA, VTA, s->vta);
             static gen_helper_gvec_2_ptr * const fns[4] = {
                 gen_helper_vmv_v_v_b, gen_helper_vmv_v_v_h,
                 gen_helper_vmv_v_v_w, gen_helper_vmv_v_v_d,
@@ -2124,6 +2125,7 @@ static bool trans_vmv_v_x(DisasContext *s, arg_vmv_v_x *a)
             TCGv_i64 s1_i64 = tcg_temp_new_i64();
             TCGv_ptr dest = tcg_temp_new_ptr();
             uint32_t data = FIELD_DP32(0, VDATA, LMUL, s->lmul);
+            data = FIELD_DP32(data, VDATA, VTA, s->vta);
             static gen_helper_vmv_vx * const fns[4] = {
                 gen_helper_vmv_v_x_b, gen_helper_vmv_v_x_h,
                 gen_helper_vmv_v_x_w, gen_helper_vmv_v_x_d,
@@ -2162,6 +2164,7 @@ static bool trans_vmv_v_i(DisasContext *s, arg_vmv_v_i *a)
             TCGv_i64 s1;
             TCGv_ptr dest;
             uint32_t data = FIELD_DP32(0, VDATA, LMUL, s->lmul);
+            data = FIELD_DP32(data, VDATA, VTA, s->vta);
             static gen_helper_vmv_vx * const fns[4] = {
                 gen_helper_vmv_v_x_b, gen_helper_vmv_v_x_h,
                 gen_helper_vmv_v_x_w, gen_helper_vmv_v_x_d,
@@ -2745,6 +2748,7 @@ static bool trans_vfmv_v_f(DisasContext *s, arg_vfmv_v_f 
*a)
             TCGv_ptr dest;
             TCGv_i32 desc;
             uint32_t data = FIELD_DP32(0, VDATA, LMUL, s->lmul);
+            data = FIELD_DP32(data, VDATA, VTA, s->vta);
             static gen_helper_vmv_vx * const fns[3] = {
                 gen_helper_vmv_v_x_h,
                 gen_helper_vmv_v_x_w,
diff --git a/target/riscv/vector_helper.c b/target/riscv/vector_helper.c
index e3393f7d99..77a5629b73 100644
--- a/target/riscv/vector_helper.c
+++ b/target/riscv/vector_helper.c
@@ -1961,6 +1961,10 @@ void HELPER(NAME)(void *vd, void *vs1, CPURISCVState 
*env,           \
                   uint32_t desc)                                     \
 {                                                                    \
     uint32_t vl = env->vl;                                           \
+    uint32_t esz = sizeof(ETYPE);                                    \
+    uint32_t vlmax = vext_get_total_elem(env_archcpu(env),           \
+                                         env->vtype);                \
+    uint32_t vta = vext_vta(desc);                                   \
     uint32_t i;                                                      \
                                                                      \
     for (i = env->vstart; i < vl; i++) {                             \
@@ -1968,6 +1972,9 @@ void HELPER(NAME)(void *vd, void *vs1, CPURISCVState 
*env,           \
         *((ETYPE *)vd + H(i)) = s1;                                  \
     }                                                                \
     env->vstart = 0;                                                 \
+    /* set tail elements to 1s */                                    \
+    vext_set_elems_1s_fns[ctzl(esz)](vd, vta, vl, vl * esz,          \
+                                     vlmax * esz);                   \
 }
 
 GEN_VEXT_VMV_VV(vmv_v_v_b, int8_t,  H1)
@@ -1980,12 +1987,19 @@ void HELPER(NAME)(void *vd, uint64_t s1, CPURISCVState 
*env,         \
                   uint32_t desc)                                     \
 {                                                                    \
     uint32_t vl = env->vl;                                           \
+    uint32_t esz = sizeof(ETYPE);                                    \
+    uint32_t vlmax = vext_get_total_elem(env_archcpu(env),           \
+                                         env->vtype);                \
+    uint32_t vta = vext_vta(desc);                                   \
     uint32_t i;                                                      \
                                                                      \
     for (i = env->vstart; i < vl; i++) {                             \
         *((ETYPE *)vd + H(i)) = (ETYPE)s1;                           \
     }                                                                \
     env->vstart = 0;                                                 \
+    /* set tail elements to 1s */                                    \
+    vext_set_elems_1s_fns[ctzl(esz)](vd, vta, vl, vl * esz,          \
+                                     vlmax * esz);                   \
 }
 
 GEN_VEXT_VMV_VX(vmv_v_x_b, int8_t,  H1)
@@ -1998,6 +2012,10 @@ void HELPER(NAME)(void *vd, void *v0, void *vs1, void 
*vs2,          \
                   CPURISCVState *env, uint32_t desc)                 \
 {                                                                    \
     uint32_t vl = env->vl;                                           \
+    uint32_t esz = sizeof(ETYPE);                                    \
+    uint32_t vlmax = vext_get_total_elem(env_archcpu(env),           \
+                                         env->vtype);                \
+    uint32_t vta = vext_vta(desc);                                   \
     uint32_t i;                                                      \
                                                                      \
     for (i = env->vstart; i < vl; i++) {                             \
@@ -2005,6 +2023,9 @@ void HELPER(NAME)(void *vd, void *v0, void *vs1, void 
*vs2,          \
         *((ETYPE *)vd + H(i)) = *(vt + H(i));                        \
     }                                                                \
     env->vstart = 0;                                                 \
+    /* set tail elements to 1s */                                    \
+    vext_set_elems_1s_fns[ctzl(esz)](vd, vta, vl, vl * esz,          \
+                                     vlmax * esz);                   \
 }
 
 GEN_VEXT_VMERGE_VV(vmerge_vvm_b, int8_t,  H1)
@@ -2017,6 +2038,10 @@ void HELPER(NAME)(void *vd, void *v0, target_ulong s1,   
            \
                   void *vs2, CPURISCVState *env, uint32_t desc)      \
 {                                                                    \
     uint32_t vl = env->vl;                                           \
+    uint32_t esz = sizeof(ETYPE);                                    \
+    uint32_t vlmax = vext_get_total_elem(env_archcpu(env),           \
+                                         env->vtype);                \
+    uint32_t vta = vext_vta(desc);                                   \
     uint32_t i;                                                      \
                                                                      \
     for (i = env->vstart; i < vl; i++) {                             \
@@ -2026,6 +2051,9 @@ void HELPER(NAME)(void *vd, void *v0, target_ulong s1,    
           \
         *((ETYPE *)vd + H(i)) = d;                                   \
     }                                                                \
     env->vstart = 0;                                                 \
+    /* set tail elements to 1s */                                    \
+    vext_set_elems_1s_fns[ctzl(esz)](vd, vta, vl, vl * esz,          \
+                                     vlmax * esz);                   \
 }
 
 GEN_VEXT_VMERGE_VX(vmerge_vxm_b, int8_t,  H1)
-- 
2.34.1




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