diff mbox series

[RFC,v2,57/76] target/riscv: rvv-0.9: mask-register logical instructions

Message ID 20200722091641.8834-58-frank.chang@sifive.com
State New
Headers show
Series target/riscv: support vector extension v0.9 | expand

Commit Message

Frank Chang July 22, 2020, 9:16 a.m. UTC
From: Frank Chang <frank.chang@sifive.com>

Clear tail elements only if VTA is agnostic.

Signed-off-by: Frank Chang <frank.chang@sifive.com>
---
 target/riscv/insn_trans/trans_rvv.inc.c | 3 ++-
 target/riscv/vector_helper.c            | 7 +++++--
 2 files changed, 7 insertions(+), 3 deletions(-)
diff mbox series

Patch

diff --git a/target/riscv/insn_trans/trans_rvv.inc.c b/target/riscv/insn_trans/trans_rvv.inc.c
index 378af8344d..5004707b87 100644
--- a/target/riscv/insn_trans/trans_rvv.inc.c
+++ b/target/riscv/insn_trans/trans_rvv.inc.c
@@ -3023,7 +3023,8 @@  GEN_OPFVV_WIDEN_TRANS(vfwredsum_vs, reduction_check)
 #define GEN_MM_TRANS(NAME)                                         \
 static bool trans_##NAME(DisasContext *s, arg_r *a)                \
 {                                                                  \
-    if (vext_check_isa_ill(s)) {                                   \
+    if (require_rvv(s) &&                                          \
+        vext_check_isa_ill(s)) {                                   \
         uint32_t data = 0;                                         \
         gen_helper_gvec_4_ptr *fn = gen_helper_##NAME;             \
         TCGLabel *over = gen_new_label();                          \
diff --git a/target/riscv/vector_helper.c b/target/riscv/vector_helper.c
index fa2459d941..bb426e224c 100644
--- a/target/riscv/vector_helper.c
+++ b/target/riscv/vector_helper.c
@@ -4738,6 +4738,7 @@  void HELPER(NAME)(void *vd, void *v0, void *vs1,          \
                   uint32_t desc)                          \
 {                                                         \
     uint32_t vlmax = env_archcpu(env)->cfg.vlen;          \
+    uint32_t vta = vext_vta(desc);                        \
     uint32_t vl = env->vl;                                \
     uint32_t i;                                           \
     int a, b;                                             \
@@ -4747,8 +4748,10 @@  void HELPER(NAME)(void *vd, void *v0, void *vs1,          \
         b = vext_elem_mask(vs2, i);                       \
         vext_set_elem_mask(vd, i, OP(b, a));              \
     }                                                     \
-    for (; i < vlmax; i++) {                              \
-        vext_set_elem_mask(vd, i, 0);                     \
+    if (vta == 1) {                                       \
+        for (; i < vlmax; i++) {                          \
+            vext_set_elem_mask(vd, i, 1);                 \
+        }                                                 \
     }                                                     \
 }