target/riscv: vector integer min/max instructions

Signed-off-by: LIU Zhiwei <zhiwei_liu@c-sky.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Message-Id: <20200701152549.1218-18-zhiwei_liu@c-sky.com>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
diff --git a/target/riscv/insn32.decode b/target/riscv/insn32.decode
index 5d022ff..3d8986c 100644
--- a/target/riscv/insn32.decode
+++ b/target/riscv/insn32.decode
@@ -357,6 +357,14 @@
 vmsgtu_vi       011110 . ..... ..... 011 ..... 1010111 @r_vm
 vmsgt_vx        011111 . ..... ..... 100 ..... 1010111 @r_vm
 vmsgt_vi        011111 . ..... ..... 011 ..... 1010111 @r_vm
+vminu_vv        000100 . ..... ..... 000 ..... 1010111 @r_vm
+vminu_vx        000100 . ..... ..... 100 ..... 1010111 @r_vm
+vmin_vv         000101 . ..... ..... 000 ..... 1010111 @r_vm
+vmin_vx         000101 . ..... ..... 100 ..... 1010111 @r_vm
+vmaxu_vv        000110 . ..... ..... 000 ..... 1010111 @r_vm
+vmaxu_vx        000110 . ..... ..... 100 ..... 1010111 @r_vm
+vmax_vv         000111 . ..... ..... 000 ..... 1010111 @r_vm
+vmax_vx         000111 . ..... ..... 100 ..... 1010111 @r_vm
 
 vsetvli         0 ........... ..... 111 ..... 1010111  @r2_zimm
 vsetvl          1000000 ..... ..... 111 ..... 1010111  @r