target/loongarch: Implement vpcnt

This patch includes: - VPCNT.{B/H/W/D}. Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Signed-off-by: Song Gao <gaosong@loongson.cn> Message-Id: <20230504122810.4094787-31-gaosong@loongson.cn>
qemu · May 5, 2023 · 8429548 · 8429548
1 parent 93f478f
commit 8429548
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diff --git a/target/loongarch/disas.c b/target/loongarch/disas.c
@@ -1267,3 +1267,8 @@ INSN_LSX(vclz_b,           vv)
 INSN_LSX(vclz_h,           vv)
 INSN_LSX(vclz_w,           vv)
 INSN_LSX(vclz_d,           vv)
+
+INSN_LSX(vpcnt_b,          vv)
+INSN_LSX(vpcnt_h,          vv)
+INSN_LSX(vpcnt_w,          vv)
+INSN_LSX(vpcnt_d,          vv)
diff --git a/target/loongarch/helper.h b/target/loongarch/helper.h
@@ -480,3 +480,8 @@ DEF_HELPER_3(vclz_b, void, env, i32, i32)
 DEF_HELPER_3(vclz_h, void, env, i32, i32)
 DEF_HELPER_3(vclz_w, void, env, i32, i32)
 DEF_HELPER_3(vclz_d, void, env, i32, i32)
+
+DEF_HELPER_3(vpcnt_b, void, env, i32, i32)
+DEF_HELPER_3(vpcnt_h, void, env, i32, i32)
+DEF_HELPER_3(vpcnt_w, void, env, i32, i32)
+DEF_HELPER_3(vpcnt_d, void, env, i32, i32)
diff --git a/target/loongarch/insn_trans/trans_lsx.c.inc b/target/loongarch/insn_trans/trans_lsx.c.inc
@@ -3106,3 +3106,8 @@ TRANS(vclz_b, gen_vv, gen_helper_vclz_b)
 TRANS(vclz_h, gen_vv, gen_helper_vclz_h)
 TRANS(vclz_w, gen_vv, gen_helper_vclz_w)
 TRANS(vclz_d, gen_vv, gen_helper_vclz_d)
+
+TRANS(vpcnt_b, gen_vv, gen_helper_vpcnt_b)
+TRANS(vpcnt_h, gen_vv, gen_helper_vpcnt_h)
+TRANS(vpcnt_w, gen_vv, gen_helper_vpcnt_w)
+TRANS(vpcnt_d, gen_vv, gen_helper_vpcnt_d)
diff --git a/target/loongarch/insns.decode b/target/loongarch/insns.decode
@@ -968,3 +968,8 @@ vclz_b           0111 00101001 11000 00100 ..... .....    @vv
 vclz_h           0111 00101001 11000 00101 ..... .....    @vv
 vclz_w           0111 00101001 11000 00110 ..... .....    @vv
 vclz_d           0111 00101001 11000 00111 ..... .....    @vv
+
+vpcnt_b          0111 00101001 11000 01000 ..... .....    @vv
+vpcnt_h          0111 00101001 11000 01001 ..... .....    @vv
+vpcnt_w          0111 00101001 11000 01010 ..... .....    @vv
+vpcnt_d          0111 00101001 11000 01011 ..... .....    @vv
diff --git a/target/loongarch/lsx_helper.c b/target/loongarch/lsx_helper.c
@@ -1946,3 +1946,21 @@ DO_2OP(vclz_b, 8, UB, DO_CLZ_B)
 DO_2OP(vclz_h, 16, UH, DO_CLZ_H)
 DO_2OP(vclz_w, 32, UW, DO_CLZ_W)
 DO_2OP(vclz_d, 64, UD, DO_CLZ_D)
+
+#define VPCNT(NAME, BIT, E, FN)                                     \
+void HELPER(NAME)(CPULoongArchState *env, uint32_t vd, uint32_t vj) \
+{                                                                   \
+    int i;                                                          \
+    VReg *Vd = &(env->fpr[vd].vreg);                                \
+    VReg *Vj = &(env->fpr[vj].vreg);                                \
+                                                                    \
+    for (i = 0; i < LSX_LEN/BIT; i++)                               \
+    {                                                               \
+        Vd->E(i) = FN(Vj->E(i));                                    \
+    }                                                               \
+}
+
+VPCNT(vpcnt_b, 8, UB, ctpop8)
+VPCNT(vpcnt_h, 16, UH, ctpop16)
+VPCNT(vpcnt_w, 32, UW, ctpop32)
+VPCNT(vpcnt_d, 64, UD, ctpop64)