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target/arm: Implement SVE Integer Wide Immediate - Predicated Group 

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20180516223007.10256-25-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Richard Henderson 2018-05-18 17:48:09 +01:00 committed by Peter Maydell
parent e1fa1164f3
commit f25a236153
4 changed files with 224 additions and 1 deletions
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10
target/arm/helper-sve.h
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@ -404,6 +404,16 @@ DEF_HELPER_FLAGS_4(sve_uqaddi_s, TCG_CALL_NO_RWG, void, ptr, ptr, s64, i32)
DEF_HELPER_FLAGS_4(sve_uqaddi_d, TCG_CALL_NO_RWG, void, ptr, ptr, i64, i32)
DEF_HELPER_FLAGS_4(sve_uqsubi_d, TCG_CALL_NO_RWG, void, ptr, ptr, i64, i32)
DEF_HELPER_FLAGS_5(sve_cpy_m_b, TCG_CALL_NO_RWG, void, ptr, ptr, ptr, i64, i32)
DEF_HELPER_FLAGS_5(sve_cpy_m_h, TCG_CALL_NO_RWG, void, ptr, ptr, ptr, i64, i32)
DEF_HELPER_FLAGS_5(sve_cpy_m_s, TCG_CALL_NO_RWG, void, ptr, ptr, ptr, i64, i32)
DEF_HELPER_FLAGS_5(sve_cpy_m_d, TCG_CALL_NO_RWG, void, ptr, ptr, ptr, i64, i32)
DEF_HELPER_FLAGS_4(sve_cpy_z_b, TCG_CALL_NO_RWG, void, ptr, ptr, i64, i32)
DEF_HELPER_FLAGS_4(sve_cpy_z_h, TCG_CALL_NO_RWG, void, ptr, ptr, i64, i32)
DEF_HELPER_FLAGS_4(sve_cpy_z_s, TCG_CALL_NO_RWG, void, ptr, ptr, i64, i32)
DEF_HELPER_FLAGS_4(sve_cpy_z_d, TCG_CALL_NO_RWG, void, ptr, ptr, i64, i32)
DEF_HELPER_FLAGS_5(sve_and_pppp, TCG_CALL_NO_RWG, void, ptr, ptr, ptr, ptr, i32)
DEF_HELPER_FLAGS_5(sve_bic_pppp, TCG_CALL_NO_RWG, void, ptr, ptr, ptr, ptr, i32)
DEF_HELPER_FLAGS_5(sve_eor_pppp, TCG_CALL_NO_RWG, void, ptr, ptr, ptr, ptr, i32)

19
target/arm/sve.decode
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@ -22,7 +22,7 @@
###########################################################################
# Named fields. These are primarily for disjoint fields.
%imm4_16_p1 16:4 !function=plus1
%imm4_16_p1 16:4 !function=plus1
%imm6_22_5 22:1 5:5
%imm9_16_10 16:s6 10:3
@ -38,6 +38,9 @@
%tszimm16_shr 22:2 16:5 !function=tszimm_shr
%tszimm16_shl 22:2 16:5 !function=tszimm_shl
# Signed 8-bit immediate, optionally shifted left by 8.
%sh8_i8s 5:9 !function=expand_imm_sh8s
# Either a copy of rd (at bit 0), or a different source
# as propagated via the MOVPRFX instruction.
%reg_movprfx 0:5
@ -112,6 +115,11 @@
@rd_rn_tszimm ........ .. ... ... ...... rn:5 rd:5 \
&rri_esz esz=%tszimm16_esz
# Two register operand, one immediate operand, with 4-bit predicate.
# User must fill in imm.
@rdn_pg4 ........ esz:2 .. pg:4 ... ........ rd:5 \
&rpri_esz rn=%reg_movprfx
# Two register operand, one encoded bitmask.
@rdn_dbm ........ .. .... dbm:13 rd:5 \
&rr_dbm rn=%reg_movprfx
@ -345,6 +353,15 @@ AND_zzi 00000101 10 0000 ............. ..... @rdn_dbm
# SVE broadcast bitmask immediate
DUPM 00000101 11 0000 dbm:13 rd:5
### SVE Integer Wide Immediate - Predicated Group
# SVE copy floating-point immediate (predicated)
FCPY 00000101 .. 01 .... 110 imm:8 ..... @rdn_pg4
# SVE copy integer immediate (predicated)
CPY_m_i 00000101 .. 01 .... 01 . ........ ..... @rdn_pg4 imm=%sh8_i8s
CPY_z_i 00000101 .. 01 .... 00 . ........ ..... @rdn_pg4 imm=%sh8_i8s
### SVE Predicate Logical Operations Group
# SVE predicate logical operations

108
target/arm/sve_helper.c
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@ -1371,3 +1371,111 @@ void HELPER(sve_uqsubi_d)(void *d, void *a, uint64_t b, uint32_t desc)
*(uint64_t *)(d + i) = (ai < b ? 0 : ai - b);
}
}
/* Two operand predicated copy immediate with merge. All valid immediates
* can fit within 17 signed bits in the simd_data field.
*/
void HELPER(sve_cpy_m_b)(void *vd, void *vn, void *vg,
uint64_t mm, uint32_t desc)
{
intptr_t i, opr_sz = simd_oprsz(desc) / 8;
uint64_t *d = vd, *n = vn;
uint8_t *pg = vg;
mm = dup_const(MO_8, mm);
for (i = 0; i < opr_sz; i += 1) {
uint64_t nn = n[i];
uint64_t pp = expand_pred_b(pg[H1(i)]);
d[i] = (mm & pp) | (nn & ~pp);
}
}
void HELPER(sve_cpy_m_h)(void *vd, void *vn, void *vg,
uint64_t mm, uint32_t desc)
{
intptr_t i, opr_sz = simd_oprsz(desc) / 8;
uint64_t *d = vd, *n = vn;
uint8_t *pg = vg;
mm = dup_const(MO_16, mm);
for (i = 0; i < opr_sz; i += 1) {
uint64_t nn = n[i];
uint64_t pp = expand_pred_h(pg[H1(i)]);
d[i] = (mm & pp) | (nn & ~pp);
}
}
void HELPER(sve_cpy_m_s)(void *vd, void *vn, void *vg,
uint64_t mm, uint32_t desc)
{
intptr_t i, opr_sz = simd_oprsz(desc) / 8;
uint64_t *d = vd, *n = vn;
uint8_t *pg = vg;
mm = dup_const(MO_32, mm);
for (i = 0; i < opr_sz; i += 1) {
uint64_t nn = n[i];
uint64_t pp = expand_pred_s(pg[H1(i)]);
d[i] = (mm & pp) | (nn & ~pp);
}
}
void HELPER(sve_cpy_m_d)(void *vd, void *vn, void *vg,
uint64_t mm, uint32_t desc)
{
intptr_t i, opr_sz = simd_oprsz(desc) / 8;
uint64_t *d = vd, *n = vn;
uint8_t *pg = vg;
for (i = 0; i < opr_sz; i += 1) {
uint64_t nn = n[i];
d[i] = (pg[H1(i)] & 1 ? mm : nn);
}
}
void HELPER(sve_cpy_z_b)(void *vd, void *vg, uint64_t val, uint32_t desc)
{
intptr_t i, opr_sz = simd_oprsz(desc) / 8;
uint64_t *d = vd;
uint8_t *pg = vg;
val = dup_const(MO_8, val);
for (i = 0; i < opr_sz; i += 1) {
d[i] = val & expand_pred_b(pg[H1(i)]);
}
}
void HELPER(sve_cpy_z_h)(void *vd, void *vg, uint64_t val, uint32_t desc)
{
intptr_t i, opr_sz = simd_oprsz(desc) / 8;
uint64_t *d = vd;
uint8_t *pg = vg;
val = dup_const(MO_16, val);
for (i = 0; i < opr_sz; i += 1) {
d[i] = val & expand_pred_h(pg[H1(i)]);
}
}
void HELPER(sve_cpy_z_s)(void *vd, void *vg, uint64_t val, uint32_t desc)
{
intptr_t i, opr_sz = simd_oprsz(desc) / 8;
uint64_t *d = vd;
uint8_t *pg = vg;
val = dup_const(MO_32, val);
for (i = 0; i < opr_sz; i += 1) {
d[i] = val & expand_pred_s(pg[H1(i)]);
}
}
void HELPER(sve_cpy_z_d)(void *vd, void *vg, uint64_t val, uint32_t desc)
{
intptr_t i, opr_sz = simd_oprsz(desc) / 8;
uint64_t *d = vd;
uint8_t *pg = vg;
for (i = 0; i < opr_sz; i += 1) {
d[i] = (pg[H1(i)] & 1 ? val : 0);
}
}

88
target/arm/translate-sve.c
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@ -62,6 +62,12 @@ static inline int plus1(int x)
return x + 1;
}
/* The SH bit is in bit 8. Extract the low 8 and shift. */
static inline int expand_imm_sh8s(int x)
{
return (int8_t)x << (x & 0x100 ? 8 : 0);
}
/*
* Include the generated decoder.
*/
@ -1834,6 +1840,88 @@ static bool trans_DUPM(DisasContext *s, arg_DUPM *a, uint32_t insn)
return true;
}
/*
*** SVE Integer Wide Immediate - Predicated Group
*/
/* Implement all merging copies. This is used for CPY (immediate),
* FCPY, CPY (scalar), CPY (SIMD&FP scalar).
*/
static void do_cpy_m(DisasContext *s, int esz, int rd, int rn, int pg,
TCGv_i64 val)
{
typedef void gen_cpy(TCGv_ptr, TCGv_ptr, TCGv_ptr, TCGv_i64, TCGv_i32);
static gen_cpy * const fns[4] = {
gen_helper_sve_cpy_m_b, gen_helper_sve_cpy_m_h,
gen_helper_sve_cpy_m_s, gen_helper_sve_cpy_m_d,
};
unsigned vsz = vec_full_reg_size(s);
TCGv_i32 desc = tcg_const_i32(simd_desc(vsz, vsz, 0));
TCGv_ptr t_zd = tcg_temp_new_ptr();
TCGv_ptr t_zn = tcg_temp_new_ptr();
TCGv_ptr t_pg = tcg_temp_new_ptr();
tcg_gen_addi_ptr(t_zd, cpu_env, vec_full_reg_offset(s, rd));
tcg_gen_addi_ptr(t_zn, cpu_env, vec_full_reg_offset(s, rn));
tcg_gen_addi_ptr(t_pg, cpu_env, pred_full_reg_offset(s, pg));
fns[esz](t_zd, t_zn, t_pg, val, desc);
tcg_temp_free_ptr(t_zd);
tcg_temp_free_ptr(t_zn);
tcg_temp_free_ptr(t_pg);
tcg_temp_free_i32(desc);
}
static bool trans_FCPY(DisasContext *s, arg_FCPY *a, uint32_t insn)
{
if (a->esz == 0) {
return false;
}
if (sve_access_check(s)) {
/* Decode the VFP immediate. */
uint64_t imm = vfp_expand_imm(a->esz, a->imm);
TCGv_i64 t_imm = tcg_const_i64(imm);
do_cpy_m(s, a->esz, a->rd, a->rn, a->pg, t_imm);
tcg_temp_free_i64(t_imm);
}
return true;
}
static bool trans_CPY_m_i(DisasContext *s, arg_rpri_esz *a, uint32_t insn)
{
if (a->esz == 0 && extract32(insn, 13, 1)) {
return false;
}
if (sve_access_check(s)) {
TCGv_i64 t_imm = tcg_const_i64(a->imm);
do_cpy_m(s, a->esz, a->rd, a->rn, a->pg, t_imm);
tcg_temp_free_i64(t_imm);
}
return true;
}
static bool trans_CPY_z_i(DisasContext *s, arg_CPY_z_i *a, uint32_t insn)
{
static gen_helper_gvec_2i * const fns[4] = {
gen_helper_sve_cpy_z_b, gen_helper_sve_cpy_z_h,
gen_helper_sve_cpy_z_s, gen_helper_sve_cpy_z_d,
};
if (a->esz == 0 && extract32(insn, 13, 1)) {
return false;
}
if (sve_access_check(s)) {
unsigned vsz = vec_full_reg_size(s);
TCGv_i64 t_imm = tcg_const_i64(a->imm);
tcg_gen_gvec_2i_ool(vec_full_reg_offset(s, a->rd),
pred_full_reg_offset(s, a->pg),
t_imm, vsz, vsz, 0, fns[a->esz]);
tcg_temp_free_i64(t_imm);
}
return true;
}
/*
*** SVE Memory - 32-bit Gather and Unsized Contiguous Group
*/