target/loongarch: Implement vmadd/vmsub/vmaddw{ev/od}

This patch includes:
- VMADD.{B/H/W/D};
- VMSUB.{B/H/W/D};
- VMADDW{EV/OD}.{H.B/W.H/D.W/Q.D}[U];
- VMADDW{EV/OD}.{H.BU.B/W.HU.H/D.WU.W/Q.DU.D}.

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Song Gao <gaosong@loongson.cn>
Message-Id: <20230504122810.4094787-16-gaosong@loongson.cn>

target/loongarch/disas.c

@@ -1010,3 +1010,37 @@ INSN_LSX(vmulwod_h_bu_b,   vvv)
 INSN_LSX(vmulwod_w_hu_h,   vvv)
 INSN_LSX(vmulwod_d_wu_w,   vvv)
 INSN_LSX(vmulwod_q_du_d,   vvv)
+
+INSN_LSX(vmadd_b,          vvv)
+INSN_LSX(vmadd_h,          vvv)
+INSN_LSX(vmadd_w,          vvv)
+INSN_LSX(vmadd_d,          vvv)
+INSN_LSX(vmsub_b,          vvv)
+INSN_LSX(vmsub_h,          vvv)
+INSN_LSX(vmsub_w,          vvv)
+INSN_LSX(vmsub_d,          vvv)
+
+INSN_LSX(vmaddwev_h_b,     vvv)
+INSN_LSX(vmaddwev_w_h,     vvv)
+INSN_LSX(vmaddwev_d_w,     vvv)
+INSN_LSX(vmaddwev_q_d,     vvv)
+INSN_LSX(vmaddwod_h_b,     vvv)
+INSN_LSX(vmaddwod_w_h,     vvv)
+INSN_LSX(vmaddwod_d_w,     vvv)
+INSN_LSX(vmaddwod_q_d,     vvv)
+INSN_LSX(vmaddwev_h_bu,    vvv)
+INSN_LSX(vmaddwev_w_hu,    vvv)
+INSN_LSX(vmaddwev_d_wu,    vvv)
+INSN_LSX(vmaddwev_q_du,    vvv)
+INSN_LSX(vmaddwod_h_bu,    vvv)
+INSN_LSX(vmaddwod_w_hu,    vvv)
+INSN_LSX(vmaddwod_d_wu,    vvv)
+INSN_LSX(vmaddwod_q_du,    vvv)
+INSN_LSX(vmaddwev_h_bu_b,  vvv)
+INSN_LSX(vmaddwev_w_hu_h,  vvv)
+INSN_LSX(vmaddwev_d_wu_w,  vvv)
+INSN_LSX(vmaddwev_q_du_d,  vvv)
+INSN_LSX(vmaddwod_h_bu_b,  vvv)
+INSN_LSX(vmaddwod_w_hu_h,  vvv)
+INSN_LSX(vmaddwod_d_wu_w,  vvv)
+INSN_LSX(vmaddwod_q_du_d,  vvv)

target/loongarch/helper.h

@@ -273,3 +273,33 @@ DEF_HELPER_FLAGS_4(vmulwev_d_wu_w, TCG_CALL_NO_RWG, void, ptr, ptr, ptr, i32)
 DEF_HELPER_FLAGS_4(vmulwod_h_bu_b, TCG_CALL_NO_RWG, void, ptr, ptr, ptr, i32)
 DEF_HELPER_FLAGS_4(vmulwod_w_hu_h, TCG_CALL_NO_RWG, void, ptr, ptr, ptr, i32)
 DEF_HELPER_FLAGS_4(vmulwod_d_wu_w, TCG_CALL_NO_RWG, void, ptr, ptr, ptr, i32)
+
+DEF_HELPER_FLAGS_4(vmadd_b, TCG_CALL_NO_RWG, void, ptr, ptr, ptr, i32)
+DEF_HELPER_FLAGS_4(vmadd_h, TCG_CALL_NO_RWG, void, ptr, ptr, ptr, i32)
+DEF_HELPER_FLAGS_4(vmadd_w, TCG_CALL_NO_RWG, void, ptr, ptr, ptr, i32)
+DEF_HELPER_FLAGS_4(vmadd_d, TCG_CALL_NO_RWG, void, ptr, ptr, ptr, i32)
+DEF_HELPER_FLAGS_4(vmsub_b, TCG_CALL_NO_RWG, void, ptr, ptr, ptr, i32)
+DEF_HELPER_FLAGS_4(vmsub_h, TCG_CALL_NO_RWG, void, ptr, ptr, ptr, i32)
+DEF_HELPER_FLAGS_4(vmsub_w, TCG_CALL_NO_RWG, void, ptr, ptr, ptr, i32)
+DEF_HELPER_FLAGS_4(vmsub_d, TCG_CALL_NO_RWG, void, ptr, ptr, ptr, i32)
+
+DEF_HELPER_FLAGS_4(vmaddwev_h_b, TCG_CALL_NO_RWG, void, ptr, ptr, ptr, i32)
+DEF_HELPER_FLAGS_4(vmaddwev_w_h, TCG_CALL_NO_RWG, void, ptr, ptr, ptr, i32)
+DEF_HELPER_FLAGS_4(vmaddwev_d_w, TCG_CALL_NO_RWG, void, ptr, ptr, ptr, i32)
+DEF_HELPER_FLAGS_4(vmaddwod_h_b, TCG_CALL_NO_RWG, void, ptr, ptr, ptr, i32)
+DEF_HELPER_FLAGS_4(vmaddwod_w_h, TCG_CALL_NO_RWG, void, ptr, ptr, ptr, i32)
+DEF_HELPER_FLAGS_4(vmaddwod_d_w, TCG_CALL_NO_RWG, void, ptr, ptr, ptr, i32)
+
+DEF_HELPER_FLAGS_4(vmaddwev_h_bu, TCG_CALL_NO_RWG, void, ptr, ptr, ptr, i32)
+DEF_HELPER_FLAGS_4(vmaddwev_w_hu, TCG_CALL_NO_RWG, void, ptr, ptr, ptr, i32)
+DEF_HELPER_FLAGS_4(vmaddwev_d_wu, TCG_CALL_NO_RWG, void, ptr, ptr, ptr, i32)
+DEF_HELPER_FLAGS_4(vmaddwod_h_bu, TCG_CALL_NO_RWG, void, ptr, ptr, ptr, i32)
+DEF_HELPER_FLAGS_4(vmaddwod_w_hu, TCG_CALL_NO_RWG, void, ptr, ptr, ptr, i32)
+DEF_HELPER_FLAGS_4(vmaddwod_d_wu, TCG_CALL_NO_RWG, void, ptr, ptr, ptr, i32)
+
+DEF_HELPER_FLAGS_4(vmaddwev_h_bu_b, TCG_CALL_NO_RWG, void, ptr, ptr, ptr, i32)
+DEF_HELPER_FLAGS_4(vmaddwev_w_hu_h, TCG_CALL_NO_RWG, void, ptr, ptr, ptr, i32)
+DEF_HELPER_FLAGS_4(vmaddwev_d_wu_w, TCG_CALL_NO_RWG, void, ptr, ptr, ptr, i32)
+DEF_HELPER_FLAGS_4(vmaddwod_h_bu_b, TCG_CALL_NO_RWG, void, ptr, ptr, ptr, i32)
+DEF_HELPER_FLAGS_4(vmaddwod_w_hu_h, TCG_CALL_NO_RWG, void, ptr, ptr, ptr, i32)
+DEF_HELPER_FLAGS_4(vmaddwod_d_wu_w, TCG_CALL_NO_RWG, void, ptr, ptr, ptr, i32)