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target/arm: Implement SVE floating-point complex add

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Backports commit 76a9d9cdc481ed79f1c2ec16eeed185f13e6a8ae from qemu
This commit is contained in:
Richard Henderson 2018-07-03 04:17:39 -04:00 committed by Lioncash
parent f7847aad46
commit 79220741df
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GPG key ID: 4E3C3CC1031BA9C7
7 changed files with 145 additions and 0 deletions
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3
qemu/aarch64.h
View file

@ -3531,6 +3531,9 @@
#define helper_sve_facgt_d helper_sve_facgt_d_aarch64
#define helper_sve_facgt_h helper_sve_facgt_h_aarch64
#define helper_sve_facgt_s helper_sve_facgt_s_aarch64
#define helper_sve_fcadd_d helper_sve_fcadd_d_aarch64
#define helper_sve_fcadd_h helper_sve_fcadd_h_aarch64
#define helper_sve_fcadd_s helper_sve_fcadd_s_aarch64
#define helper_sve_fcmeq_d helper_sve_fcmeq_d_aarch64
#define helper_sve_fcmeq_h helper_sve_fcmeq_h_aarch64
#define helper_sve_fcmeq_s helper_sve_fcmeq_s_aarch64

3
qemu/aarch64eb.h
View file

@ -3531,6 +3531,9 @@
#define helper_sve_facgt_d helper_sve_facgt_d_aarch64eb
#define helper_sve_facgt_h helper_sve_facgt_h_aarch64eb
#define helper_sve_facgt_s helper_sve_facgt_s_aarch64eb
#define helper_sve_fcadd_d helper_sve_fcadd_d_aarch64eb
#define helper_sve_fcadd_h helper_sve_fcadd_h_aarch64eb
#define helper_sve_fcadd_s helper_sve_fcadd_s_aarch64eb
#define helper_sve_fcmeq_d helper_sve_fcmeq_d_aarch64eb
#define helper_sve_fcmeq_h helper_sve_fcmeq_h_aarch64eb
#define helper_sve_fcmeq_s helper_sve_fcmeq_s_aarch64eb

3
qemu/header_gen.py
View file

@ -3552,6 +3552,9 @@ aarch64_symbols = (
'helper_sve_facgt_d',
'helper_sve_facgt_h',
'helper_sve_facgt_s',
'helper_sve_fcadd_d',
'helper_sve_fcadd_h',
'helper_sve_fcadd_s',
'helper_sve_fcmeq_d',
'helper_sve_fcmeq_h',
'helper_sve_fcmeq_s',

7
qemu/target/arm/helper-sve.h
View file

@ -1092,6 +1092,13 @@ DEF_HELPER_FLAGS_6(sve_facgt_s, TCG_CALL_NO_RWG,
DEF_HELPER_FLAGS_6(sve_facgt_d, TCG_CALL_NO_RWG,
void, ptr, ptr, ptr, ptr, ptr, i32)
DEF_HELPER_FLAGS_6(sve_fcadd_h, TCG_CALL_NO_RWG,
void, ptr, ptr, ptr, ptr, ptr, i32)
DEF_HELPER_FLAGS_6(sve_fcadd_s, TCG_CALL_NO_RWG,
void, ptr, ptr, ptr, ptr, ptr, i32)
DEF_HELPER_FLAGS_6(sve_fcadd_d, TCG_CALL_NO_RWG,
void, ptr, ptr, ptr, ptr, ptr, i32)
DEF_HELPER_FLAGS_3(sve_fmla_zpzzz_h, TCG_CALL_NO_RWG, void, env, ptr, i32)
DEF_HELPER_FLAGS_3(sve_fmla_zpzzz_s, TCG_CALL_NO_RWG, void, env, ptr, i32)
DEF_HELPER_FLAGS_3(sve_fmla_zpzzz_d, TCG_CALL_NO_RWG, void, env, ptr, i32)

4
qemu/target/arm/sve.decode
View file

@ -735,6 +735,10 @@ UMIN_zzi 00100101 .. 101 011 110 ........ ..... @rdn_i8u
# SVE integer multiply immediate (unpredicated)
MUL_zzi 00100101 .. 110 000 110 ........ ..... @rdn_i8s
# SVE floating-point complex add (predicated)
FCADD 01100100 esz:2 00000 rot:1 100 pg:3 rm:5 rd:5 \
rn=%reg_movprfx
### SVE FP Multiply-Add Indexed Group
# SVE floating-point multiply-add (indexed)

100
qemu/target/arm/sve_helper.c
View file

@ -3184,6 +3184,106 @@ void HELPER(sve_ftmad_d)(void *vd, void *vn, void *vm, void *vs, uint32_t desc)
}
}
/*
* FP Complex Add
*/
void HELPER(sve_fcadd_h)(void *vd, void *vn, void *vm, void *vg,
void *vs, uint32_t desc)
{
intptr_t j, i = simd_oprsz(desc);
uint64_t *g = vg;
float16 neg_imag = float16_set_sign(0, simd_data(desc));
float16 neg_real = float16_chs(neg_imag);
do {
uint64_t pg = g[(i - 1) >> 6];
do {
float16 e0, e1, e2, e3;
/* I holds the real index; J holds the imag index. */
j = i - sizeof(float16);
i -= 2 * sizeof(float16);
e0 = *(float16 *)(vn + H1_2(i));
e1 = *(float16 *)(vm + H1_2(j)) ^ neg_real;
e2 = *(float16 *)(vn + H1_2(j));
e3 = *(float16 *)(vm + H1_2(i)) ^ neg_imag;
if (likely((pg >> (i & 63)) & 1)) {
*(float16 *)(vd + H1_2(i)) = float16_add(e0, e1, vs);
}
if (likely((pg >> (j & 63)) & 1)) {
*(float16 *)(vd + H1_2(j)) = float16_add(e2, e3, vs);
}
} while (i & 63);
} while (i != 0);
}
void HELPER(sve_fcadd_s)(void *vd, void *vn, void *vm, void *vg,
void *vs, uint32_t desc)
{
intptr_t j, i = simd_oprsz(desc);
uint64_t *g = vg;
float32 neg_imag = float32_set_sign(0, simd_data(desc));
float32 neg_real = float32_chs(neg_imag);
do {
uint64_t pg = g[(i - 1) >> 6];
do {
float32 e0, e1, e2, e3;
/* I holds the real index; J holds the imag index. */
j = i - sizeof(float32);
i -= 2 * sizeof(float32);
e0 = *(float32 *)(vn + H1_2(i));
e1 = *(float32 *)(vm + H1_2(j)) ^ neg_real;
e2 = *(float32 *)(vn + H1_2(j));
e3 = *(float32 *)(vm + H1_2(i)) ^ neg_imag;
if (likely((pg >> (i & 63)) & 1)) {
*(float32 *)(vd + H1_2(i)) = float32_add(e0, e1, vs);
}
if (likely((pg >> (j & 63)) & 1)) {
*(float32 *)(vd + H1_2(j)) = float32_add(e2, e3, vs);
}
} while (i & 63);
} while (i != 0);
}
void HELPER(sve_fcadd_d)(void *vd, void *vn, void *vm, void *vg,
void *vs, uint32_t desc)
{
intptr_t j, i = simd_oprsz(desc);
uint64_t *g = vg;
float64 neg_imag = float64_set_sign(0, simd_data(desc));
float64 neg_real = float64_chs(neg_imag);
do {
uint64_t pg = g[(i - 1) >> 6];
do {
float64 e0, e1, e2, e3;
/* I holds the real index; J holds the imag index. */
j = i - sizeof(float64);
i -= 2 * sizeof(float64);
e0 = *(float64 *)(vn + H1_2(i));
e1 = *(float64 *)(vm + H1_2(j)) ^ neg_real;
e2 = *(float64 *)(vn + H1_2(j));
e3 = *(float64 *)(vm + H1_2(i)) ^ neg_imag;
if (likely((pg >> (i & 63)) & 1)) {
*(float64 *)(vd + H1_2(i)) = float64_add(e0, e1, vs);
}
if (likely((pg >> (j & 63)) & 1)) {
*(float64 *)(vd + H1_2(j)) = float64_add(e2, e3, vs);
}
} while (i & 63);
} while (i != 0);
}
/*
* Load contiguous data, protected by a governing predicate.
*/

25
qemu/target/arm/translate-sve.c
View file

@ -4051,6 +4051,31 @@ DO_FPCMP(FACGT, facgt)
#undef DO_FPCMP
static bool trans_FCADD(DisasContext *s, arg_FCADD *a, uint32_t insn)
{
static gen_helper_gvec_4_ptr * const fns[3] = {
gen_helper_sve_fcadd_h,
gen_helper_sve_fcadd_s,
gen_helper_sve_fcadd_d
};
if (a->esz == 0) {
return false;
}
if (sve_access_check(s)) {
TCGContext *tcg_ctx = s->uc->tcg_ctx;
unsigned vsz = vec_full_reg_size(s);
TCGv_ptr status = get_fpstatus_ptr(tcg_ctx, a->esz == MO_16);
tcg_gen_gvec_4_ptr(tcg_ctx, vec_full_reg_offset(s, a->rd),
vec_full_reg_offset(s, a->rn),
vec_full_reg_offset(s, a->rm),
pred_full_reg_offset(s, a->pg),
status, vsz, vsz, a->rot, fns[a->esz - 1]);
tcg_temp_free_ptr(tcg_ctx, status);
}
return true;
}
typedef void gen_helper_sve_fmla(TCGContext *, TCGv_env, TCGv_ptr, TCGv_i32);
static bool do_fmla(DisasContext *s, arg_rprrr_esz *a, gen_helper_sve_fmla *fn)