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target/riscv: vector narrowing integer right shift instructions

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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: <20200701152549.1218-16-zhiwei_liu@c-sky.com>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
This commit is contained in:
LIU Zhiwei 2020-07-01 23:25:03 +08:00 committed by Alistair Francis
parent 3277d955d2
commit 7689b028ca
4 changed files with 123 additions and 0 deletions
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13
target/riscv/helper.h
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@ -432,3 +432,16 @@ DEF_HELPER_6(vsra_vx_b, void, ptr, ptr, tl, ptr, env, i32)
DEF_HELPER_6(vsra_vx_h, void, ptr, ptr, tl, ptr, env, i32)
DEF_HELPER_6(vsra_vx_w, void, ptr, ptr, tl, ptr, env, i32)
DEF_HELPER_6(vsra_vx_d, void, ptr, ptr, tl, ptr, env, i32)
DEF_HELPER_6(vnsrl_vv_b, void, ptr, ptr, ptr, ptr, env, i32)
DEF_HELPER_6(vnsrl_vv_h, void, ptr, ptr, ptr, ptr, env, i32)
DEF_HELPER_6(vnsrl_vv_w, void, ptr, ptr, ptr, ptr, env, i32)
DEF_HELPER_6(vnsra_vv_b, void, ptr, ptr, ptr, ptr, env, i32)
DEF_HELPER_6(vnsra_vv_h, void, ptr, ptr, ptr, ptr, env, i32)
DEF_HELPER_6(vnsra_vv_w, void, ptr, ptr, ptr, ptr, env, i32)
DEF_HELPER_6(vnsrl_vx_b, void, ptr, ptr, tl, ptr, env, i32)
DEF_HELPER_6(vnsrl_vx_h, void, ptr, ptr, tl, ptr, env, i32)
DEF_HELPER_6(vnsrl_vx_w, void, ptr, ptr, tl, ptr, env, i32)
DEF_HELPER_6(vnsra_vx_b, void, ptr, ptr, tl, ptr, env, i32)
DEF_HELPER_6(vnsra_vx_h, void, ptr, ptr, tl, ptr, env, i32)
DEF_HELPER_6(vnsra_vx_w, void, ptr, ptr, tl, ptr, env, i32)

6
target/riscv/insn32.decode
View File

@ -331,6 +331,12 @@ vsrl_vi 101000 . ..... ..... 011 ..... 1010111 @r_vm
vsra_vv 101001 . ..... ..... 000 ..... 1010111 @r_vm
vsra_vx 101001 . ..... ..... 100 ..... 1010111 @r_vm
vsra_vi 101001 . ..... ..... 011 ..... 1010111 @r_vm
vnsrl_vv 101100 . ..... ..... 000 ..... 1010111 @r_vm
vnsrl_vx 101100 . ..... ..... 100 ..... 1010111 @r_vm
vnsrl_vi 101100 . ..... ..... 011 ..... 1010111 @r_vm
vnsra_vv 101101 . ..... ..... 000 ..... 1010111 @r_vm
vnsra_vx 101101 . ..... ..... 100 ..... 1010111 @r_vm
vnsra_vi 101101 . ..... ..... 011 ..... 1010111 @r_vm
vsetvli 0 ........... ..... 111 ..... 1010111 @r2_zimm
vsetvl 1000000 ..... ..... 111 ..... 1010111 @r

90
target/riscv/insn_trans/trans_rvv.inc.c
View File

@ -1425,3 +1425,93 @@ GEN_OPIVX_GVEC_SHIFT_TRANS(vsra_vx, sars)
GEN_OPIVI_GVEC_TRANS(vsll_vi, 1, vsll_vx, shli)
GEN_OPIVI_GVEC_TRANS(vsrl_vi, 1, vsrl_vx, shri)
GEN_OPIVI_GVEC_TRANS(vsra_vi, 1, vsra_vx, sari)
/* Vector Narrowing Integer Right Shift Instructions */
static bool opivv_narrow_check(DisasContext *s, arg_rmrr *a)
{
return (vext_check_isa_ill(s) &&
vext_check_overlap_mask(s, a->rd, a->vm, false) &&
vext_check_reg(s, a->rd, false) &&
vext_check_reg(s, a->rs2, true) &&
vext_check_reg(s, a->rs1, false) &&
vext_check_overlap_group(a->rd, 1 << s->lmul, a->rs2,
2 << s->lmul) &&
(s->lmul < 0x3) && (s->sew < 0x3));
}
/* OPIVV with NARROW */
#define GEN_OPIVV_NARROW_TRANS(NAME) \
static bool trans_##NAME(DisasContext *s, arg_rmrr *a) \
{ \
if (opivv_narrow_check(s, a)) { \
uint32_t data = 0; \
static gen_helper_gvec_4_ptr * const fns[3] = { \
gen_helper_##NAME##_b, \
gen_helper_##NAME##_h, \
gen_helper_##NAME##_w, \
}; \
TCGLabel *over = gen_new_label(); \
tcg_gen_brcondi_tl(TCG_COND_EQ, cpu_vl, 0, over); \
\
data = FIELD_DP32(data, VDATA, MLEN, s->mlen); \
data = FIELD_DP32(data, VDATA, VM, a->vm); \
data = FIELD_DP32(data, VDATA, LMUL, s->lmul); \
tcg_gen_gvec_4_ptr(vreg_ofs(s, a->rd), vreg_ofs(s, 0), \
vreg_ofs(s, a->rs1), \
vreg_ofs(s, a->rs2), cpu_env, 0, \
s->vlen / 8, data, fns[s->sew]); \
gen_set_label(over); \
return true; \
} \
return false; \
}
GEN_OPIVV_NARROW_TRANS(vnsra_vv)
GEN_OPIVV_NARROW_TRANS(vnsrl_vv)
static bool opivx_narrow_check(DisasContext *s, arg_rmrr *a)
{
return (vext_check_isa_ill(s) &&
vext_check_overlap_mask(s, a->rd, a->vm, false) &&
vext_check_reg(s, a->rd, false) &&
vext_check_reg(s, a->rs2, true) &&
vext_check_overlap_group(a->rd, 1 << s->lmul, a->rs2,
2 << s->lmul) &&
(s->lmul < 0x3) && (s->sew < 0x3));
}
/* OPIVX with NARROW */
#define GEN_OPIVX_NARROW_TRANS(NAME) \
static bool trans_##NAME(DisasContext *s, arg_rmrr *a) \
{ \
if (opivx_narrow_check(s, a)) { \
static gen_helper_opivx * const fns[3] = { \
gen_helper_##NAME##_b, \
gen_helper_##NAME##_h, \
gen_helper_##NAME##_w, \
}; \
return opivx_trans(a->rd, a->rs1, a->rs2, a->vm, fns[s->sew], s);\
} \
return false; \
}
GEN_OPIVX_NARROW_TRANS(vnsra_vx)
GEN_OPIVX_NARROW_TRANS(vnsrl_vx)
/* OPIVI with NARROW */
#define GEN_OPIVI_NARROW_TRANS(NAME, ZX, OPIVX) \
static bool trans_##NAME(DisasContext *s, arg_rmrr *a) \
{ \
if (opivx_narrow_check(s, a)) { \
static gen_helper_opivx * const fns[3] = { \
gen_helper_##OPIVX##_b, \
gen_helper_##OPIVX##_h, \
gen_helper_##OPIVX##_w, \
}; \
return opivi_trans(a->rd, a->rs1, a->rs2, a->vm, \
fns[s->sew], s, ZX); \
} \
return false; \
}
GEN_OPIVI_NARROW_TRANS(vnsra_vi, 1, vnsra_vx)
GEN_OPIVI_NARROW_TRANS(vnsrl_vi, 1, vnsrl_vx)

14
target/riscv/vector_helper.c
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@ -1395,3 +1395,17 @@ GEN_VEXT_SHIFT_VX(vsra_vx_b, int8_t, int8_t, H1, H1, DO_SRL, 0x7, clearb)
GEN_VEXT_SHIFT_VX(vsra_vx_h, int16_t, int16_t, H2, H2, DO_SRL, 0xf, clearh)
GEN_VEXT_SHIFT_VX(vsra_vx_w, int32_t, int32_t, H4, H4, DO_SRL, 0x1f, clearl)
GEN_VEXT_SHIFT_VX(vsra_vx_d, int64_t, int64_t, H8, H8, DO_SRL, 0x3f, clearq)
/* Vector Narrowing Integer Right Shift Instructions */
GEN_VEXT_SHIFT_VV(vnsrl_vv_b, uint8_t, uint16_t, H1, H2, DO_SRL, 0xf, clearb)
GEN_VEXT_SHIFT_VV(vnsrl_vv_h, uint16_t, uint32_t, H2, H4, DO_SRL, 0x1f, clearh)
GEN_VEXT_SHIFT_VV(vnsrl_vv_w, uint32_t, uint64_t, H4, H8, DO_SRL, 0x3f, clearl)
GEN_VEXT_SHIFT_VV(vnsra_vv_b, uint8_t, int16_t, H1, H2, DO_SRL, 0xf, clearb)
GEN_VEXT_SHIFT_VV(vnsra_vv_h, uint16_t, int32_t, H2, H4, DO_SRL, 0x1f, clearh)
GEN_VEXT_SHIFT_VV(vnsra_vv_w, uint32_t, int64_t, H4, H8, DO_SRL, 0x3f, clearl)
GEN_VEXT_SHIFT_VX(vnsrl_vx_b, uint8_t, uint16_t, H1, H2, DO_SRL, 0xf, clearb)
GEN_VEXT_SHIFT_VX(vnsrl_vx_h, uint16_t, uint32_t, H2, H4, DO_SRL, 0x1f, clearh)
GEN_VEXT_SHIFT_VX(vnsrl_vx_w, uint32_t, uint64_t, H4, H8, DO_SRL, 0x3f, clearl)
GEN_VEXT_SHIFT_VX(vnsra_vx_b, int8_t, int16_t, H1, H2, DO_SRL, 0xf, clearb)
GEN_VEXT_SHIFT_VX(vnsra_vx_h, int16_t, int32_t, H2, H4, DO_SRL, 0x1f, clearh)
GEN_VEXT_SHIFT_VX(vnsra_vx_w, int32_t, int64_t, H4, H8, DO_SRL, 0x3f, clearl)