[PATCH v1 1/1] target/riscv: Fix handling of NOP for vstart >= vl in vext_vx_rm_2()

[Chao Liu]

fix: 
https://lore.kernel.org/all/20240322085319.1758843-8-alistair.francis@wdc.com/
Signed-off-by: Chao Liu <lc00631@tecorigin.com>
---
 target/riscv/vector_helper.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/target/riscv/vector_helper.c b/target/riscv/vector_helper.c
index a85dd1d200..54bac5922a 100644
--- a/target/riscv/vector_helper.c
+++ b/target/riscv/vector_helper.c
@@ -2154,8 +2154,6 @@ vext_vv_rm_1(void *vd, void *v0, void *vs1, void *vs2,
              uint32_t vl, uint32_t vm, int vxrm,
              opivv2_rm_fn *fn, uint32_t vma, uint32_t esz)
 {
-    VSTART_CHECK_EARLY_EXIT(env);
-
     for (uint32_t i = env->vstart; i < vl; i++) {
         if (!vm && !vext_elem_mask(v0, i)) {
             /* set masked-off elements to 1s */
@@ -2179,6 +2177,8 @@ vext_vv_rm_2(void *vd, void *v0, void *vs1, void *vs2,
     uint32_t vta = vext_vta(desc);
     uint32_t vma = vext_vma(desc);
 
+    VSTART_CHECK_EARLY_EXIT(env);
+
     switch (env->vxrm) {
     case 0: /* rnu */
         vext_vv_rm_1(vd, v0, vs1, vs2,
-- 
2.47.1