[RFC 6/8] target/riscv: delete redundant check for zcd instructions in decode_opc

[Weiwei Li]

All the check for Zcd instructions have been done in their trans function

Signed-off-by: Weiwei Li <liweiwei@iscas.ac.cn>
Signed-off-by: Junqiang Wang <wangjunqiang@iscas.ac.cn>
---
 target/riscv/translate.c | 7 -------
 1 file changed, 7 deletions(-)

diff --git a/target/riscv/translate.c b/target/riscv/translate.c
index 347bc913eb..a55b4a7849 100644
--- a/target/riscv/translate.c
+++ b/target/riscv/translate.c
@@ -1087,13 +1087,6 @@ static void decode_opc(CPURISCVState *env, DisasContext 
*ctx, uint16_t opcode)
              ((opcode & 0xe003) == 0xe000) ||
              ((opcode & 0xe003) == 0xe002))) {
             gen_exception_illegal(ctx);
-        } else if (!(has_ext(ctx, RVC) || ctx->cfg_ptr->ext_zcd ||
-                     ctx->cfg_ptr->ext_zcmp || ctx->cfg_ptr->ext_zcmt) &&
-                   (((opcode & 0xe003) == 0x2000) ||
-                    ((opcode & 0xe003) == 0x2002) ||
-                    ((opcode & 0xe003) == 0xa000) ||
-                    ((opcode & 0xe003) == 0xa002))) {
-            gen_exception_illegal(ctx);
         } else {
             ctx->opcode = opcode;
             ctx->pc_succ_insn = ctx->base.pc_next + 2;
-- 
2.25.1