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target/loongarch: Implement xvhaddw/xvhsubw 
This patch includes:
- XVHADDW.{H.B/W.H/D.W/Q.D/HU.BU/WU.HU/DU.WU/QU.DU};
- XVHSUBW.{H.B/W.H/D.W/Q.D/HU.BU/WU.HU/DU.WU/QU.DU}.

Signed-off-by: Song Gao <gaosong@loongson.cn>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20230914022645.1151356-20-gaosong@loongson.cn>
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gaosong-loongson committed Sep 20, 2023
1 parent d2df46d commit 64cf6b9
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Showing 4 changed files with 88 additions and 11 deletions.
17 changes: 17 additions & 0 deletions target/loongarch/disas.c
View file
Expand Up @@ -1765,6 +1765,23 @@ INSN_LASX(xvssub_hu, vvv)
INSN_LASX(xvssub_wu, vvv)
INSN_LASX(xvssub_du, vvv)

INSN_LASX(xvhaddw_h_b, vvv)
INSN_LASX(xvhaddw_w_h, vvv)
INSN_LASX(xvhaddw_d_w, vvv)
INSN_LASX(xvhaddw_q_d, vvv)
INSN_LASX(xvhaddw_hu_bu, vvv)
INSN_LASX(xvhaddw_wu_hu, vvv)
INSN_LASX(xvhaddw_du_wu, vvv)
INSN_LASX(xvhaddw_qu_du, vvv)
INSN_LASX(xvhsubw_h_b, vvv)
INSN_LASX(xvhsubw_w_h, vvv)
INSN_LASX(xvhsubw_d_w, vvv)
INSN_LASX(xvhsubw_q_d, vvv)
INSN_LASX(xvhsubw_hu_bu, vvv)
INSN_LASX(xvhsubw_wu_hu, vvv)
INSN_LASX(xvhsubw_du_wu, vvv)
INSN_LASX(xvhsubw_qu_du, vvv)

INSN_LASX(xvreplgr2vr_b, vr)
INSN_LASX(xvreplgr2vr_h, vr)
INSN_LASX(xvreplgr2vr_w, vr)
Expand Down
30 changes: 26 additions & 4 deletions target/loongarch/insn_trans/trans_vec.c.inc
View file
Expand Up @@ -97,6 +97,10 @@ static bool gen_vvv_ptr(DisasContext *ctx, arg_vvv *a,
static bool gen_vvv_vl(DisasContext *ctx, arg_vvv *a, uint32_t oprsz,
gen_helper_gvec_3 *fn)
{
if (!check_vec(ctx, oprsz)) {
return true;
}

tcg_gen_gvec_3_ool(vec_full_offset(a->vd),
vec_full_offset(a->vj),
vec_full_offset(a->vk),
Expand All @@ -106,13 +110,14 @@ static bool gen_vvv_vl(DisasContext *ctx, arg_vvv *a, uint32_t oprsz,

static bool gen_vvv(DisasContext *ctx, arg_vvv *a, gen_helper_gvec_3 *fn)
{
if (!check_vec(ctx, 16)) {
return true;
}

return gen_vvv_vl(ctx, a, 16, fn);
}

static bool gen_xxx(DisasContext *ctx, arg_vvv *a, gen_helper_gvec_3 *fn)
{
return gen_vvv_vl(ctx, a, 32, fn);
}

static bool gen_vv_ptr_vl(DisasContext *ctx, arg_vv *a, uint32_t oprsz,
gen_helper_gvec_2_ptr *fn)
{
Expand Down Expand Up @@ -446,6 +451,23 @@ TRANS(vhsubw_wu_hu, LSX, gen_vvv, gen_helper_vhsubw_wu_hu)
TRANS(vhsubw_du_wu, LSX, gen_vvv, gen_helper_vhsubw_du_wu)
TRANS(vhsubw_qu_du, LSX, gen_vvv, gen_helper_vhsubw_qu_du)

TRANS(xvhaddw_h_b, LASX, gen_xxx, gen_helper_vhaddw_h_b)
TRANS(xvhaddw_w_h, LASX, gen_xxx, gen_helper_vhaddw_w_h)
TRANS(xvhaddw_d_w, LASX, gen_xxx, gen_helper_vhaddw_d_w)
TRANS(xvhaddw_q_d, LASX, gen_xxx, gen_helper_vhaddw_q_d)
TRANS(xvhaddw_hu_bu, LASX, gen_xxx, gen_helper_vhaddw_hu_bu)
TRANS(xvhaddw_wu_hu, LASX, gen_xxx, gen_helper_vhaddw_wu_hu)
TRANS(xvhaddw_du_wu, LASX, gen_xxx, gen_helper_vhaddw_du_wu)
TRANS(xvhaddw_qu_du, LASX, gen_xxx, gen_helper_vhaddw_qu_du)
TRANS(xvhsubw_h_b, LASX, gen_xxx, gen_helper_vhsubw_h_b)
TRANS(xvhsubw_w_h, LASX, gen_xxx, gen_helper_vhsubw_w_h)
TRANS(xvhsubw_d_w, LASX, gen_xxx, gen_helper_vhsubw_d_w)
TRANS(xvhsubw_q_d, LASX, gen_xxx, gen_helper_vhsubw_q_d)
TRANS(xvhsubw_hu_bu, LASX, gen_xxx, gen_helper_vhsubw_hu_bu)
TRANS(xvhsubw_wu_hu, LASX, gen_xxx, gen_helper_vhsubw_wu_hu)
TRANS(xvhsubw_du_wu, LASX, gen_xxx, gen_helper_vhsubw_du_wu)
TRANS(xvhsubw_qu_du, LASX, gen_xxx, gen_helper_vhsubw_qu_du)

static void gen_vaddwev_s(unsigned vece, TCGv_vec t, TCGv_vec a, TCGv_vec b)
{
TCGv_vec t1, t2;
Expand Down
18 changes: 18 additions & 0 deletions target/loongarch/insns.decode
View file
Expand Up @@ -1343,6 +1343,24 @@ xvssub_hu 0111 01000100 11001 ..... ..... ..... @vvv
xvssub_wu 0111 01000100 11010 ..... ..... ..... @vvv
xvssub_du 0111 01000100 11011 ..... ..... ..... @vvv

xvhaddw_h_b 0111 01000101 01000 ..... ..... ..... @vvv
xvhaddw_w_h 0111 01000101 01001 ..... ..... ..... @vvv
xvhaddw_d_w 0111 01000101 01010 ..... ..... ..... @vvv
xvhaddw_q_d 0111 01000101 01011 ..... ..... ..... @vvv
xvhaddw_hu_bu 0111 01000101 10000 ..... ..... ..... @vvv
xvhaddw_wu_hu 0111 01000101 10001 ..... ..... ..... @vvv
xvhaddw_du_wu 0111 01000101 10010 ..... ..... ..... @vvv
xvhaddw_qu_du 0111 01000101 10011 ..... ..... ..... @vvv

xvhsubw_h_b 0111 01000101 01100 ..... ..... ..... @vvv
xvhsubw_w_h 0111 01000101 01101 ..... ..... ..... @vvv
xvhsubw_d_w 0111 01000101 01110 ..... ..... ..... @vvv
xvhsubw_q_d 0111 01000101 01111 ..... ..... ..... @vvv
xvhsubw_hu_bu 0111 01000101 10100 ..... ..... ..... @vvv
xvhsubw_wu_hu 0111 01000101 10101 ..... ..... ..... @vvv
xvhsubw_du_wu 0111 01000101 10110 ..... ..... ..... @vvv
xvhsubw_qu_du 0111 01000101 10111 ..... ..... ..... @vvv

xvreplgr2vr_b 0111 01101001 11110 00000 ..... ..... @vr
xvreplgr2vr_h 0111 01101001 11110 00001 ..... ..... @vr
xvreplgr2vr_w 0111 01101001 11110 00010 ..... ..... @vr
Expand Down
34 changes: 27 additions & 7 deletions target/loongarch/vec_helper.c
View file
Expand Up @@ -13,6 +13,7 @@
#include "internals.h"
#include "tcg/tcg.h"
#include "vec.h"
#include "tcg/tcg-gvec-desc.h"

#define DO_ADD(a, b) (a + b)
#define DO_SUB(a, b) (a - b)
Expand All @@ -25,8 +26,9 @@ void HELPER(NAME)(void *vd, void *vj, void *vk, uint32_t desc) \
VReg *Vj = (VReg *)vj; \
VReg *Vk = (VReg *)vk; \
typedef __typeof(Vd->E1(0)) TD; \
int oprsz = simd_oprsz(desc); \
\
for (i = 0; i < LSX_LEN/BIT; i++) { \
for (i = 0; i < oprsz / (BIT / 8); i++) { \
Vd->E1(i) = DO_OP((TD)Vj->E2(2 * i + 1), (TD)Vk->E2(2 * i)); \
} \
}
Expand All @@ -37,11 +39,16 @@ DO_ODD_EVEN(vhaddw_d_w, 64, D, W, DO_ADD)

void HELPER(vhaddw_q_d)(void *vd, void *vj, void *vk, uint32_t desc)
{
int i;
VReg *Vd = (VReg *)vd;
VReg *Vj = (VReg *)vj;
VReg *Vk = (VReg *)vk;
int oprsz = simd_oprsz(desc);

Vd->Q(0) = int128_add(int128_makes64(Vj->D(1)), int128_makes64(Vk->D(0)));
for (i = 0; i < oprsz / 16 ; i++) {
Vd->Q(i) = int128_add(int128_makes64(Vj->D(2 * i + 1)),
int128_makes64(Vk->D(2 * i)));
}
}

DO_ODD_EVEN(vhsubw_h_b, 16, H, B, DO_SUB)
Expand All @@ -50,11 +57,16 @@ DO_ODD_EVEN(vhsubw_d_w, 64, D, W, DO_SUB)

void HELPER(vhsubw_q_d)(void *vd, void *vj, void *vk, uint32_t desc)
{
int i;
VReg *Vd = (VReg *)vd;
VReg *Vj = (VReg *)vj;
VReg *Vk = (VReg *)vk;
int oprsz = simd_oprsz(desc);

Vd->Q(0) = int128_sub(int128_makes64(Vj->D(1)), int128_makes64(Vk->D(0)));
for (i = 0; i < oprsz / 16; i++) {
Vd->Q(i) = int128_sub(int128_makes64(Vj->D(2 * i + 1)),
int128_makes64(Vk->D(2 * i)));
}
}

DO_ODD_EVEN(vhaddw_hu_bu, 16, UH, UB, DO_ADD)
Expand All @@ -63,12 +75,16 @@ DO_ODD_EVEN(vhaddw_du_wu, 64, UD, UW, DO_ADD)

void HELPER(vhaddw_qu_du)(void *vd, void *vj, void *vk, uint32_t desc)
{
int i;
VReg *Vd = (VReg *)vd;
VReg *Vj = (VReg *)vj;
VReg *Vk = (VReg *)vk;
int oprsz = simd_oprsz(desc);

Vd->Q(0) = int128_add(int128_make64((uint64_t)Vj->D(1)),
int128_make64((uint64_t)Vk->D(0)));
for (i = 0; i < oprsz / 16; i ++) {
Vd->Q(i) = int128_add(int128_make64(Vj->UD(2 * i + 1)),
int128_make64(Vk->UD(2 * i)));
}
}

DO_ODD_EVEN(vhsubw_hu_bu, 16, UH, UB, DO_SUB)
Expand All @@ -77,12 +93,16 @@ DO_ODD_EVEN(vhsubw_du_wu, 64, UD, UW, DO_SUB)

void HELPER(vhsubw_qu_du)(void *vd, void *vj, void *vk, uint32_t desc)
{
int i;
VReg *Vd = (VReg *)vd;
VReg *Vj = (VReg *)vj;
VReg *Vk = (VReg *)vk;
int oprsz = simd_oprsz(desc);

Vd->Q(0) = int128_sub(int128_make64((uint64_t)Vj->D(1)),
int128_make64((uint64_t)Vk->D(0)));
for (i = 0; i < oprsz / 16; i++) {
Vd->Q(i) = int128_sub(int128_make64(Vj->UD(2 * i + 1)),
int128_make64(Vk->UD(2 * i)));
}
}

#define DO_EVEN(NAME, BIT, E1, E2, DO_OP) \
Expand Down

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