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target/arm: Split out formats for 3 vectors + 1 index

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Used by FMLA and DOT, but will shortly be used more.
Split FMLA from FMLS to avoid an extra sub field;
similarly for SDOT from UDOT.

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20210525010358.152808-53-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Richard Henderson 2021-05-24 18:03:18 -07:00 committed by Peter Maydell
parent 1c737d9c5f
commit 0a82d963b7
2 changed files with 47 additions and 20 deletions
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29
target/arm/sve.decode
View File

@ -73,6 +73,7 @@
&rprr_s rd pg rn rm s
&rprr_esz rd pg rn rm esz
&rrrr_esz rd ra rn rm esz
&rrxr_esz rd rn rm ra index esz
&rprrr_esz rd pg rn rm ra esz
&rpri_esz rd pg rn imm esz
&ptrue rd esz pat s
@ -252,6 +253,14 @@
@rrx_2 ........ .. . index:2 rm:3 ...... rn:5 rd:5 &rrx_esz
@rrx_1 ........ .. . index:1 rm:4 ...... rn:5 rd:5 &rrx_esz
# Three registers and a scalar by N-bit index
@rrxr_3 ........ .. . .. rm:3 ...... rn:5 rd:5 \
&rrxr_esz ra=%reg_movprfx index=%index3_22_19
@rrxr_2 ........ .. . index:2 rm:3 ...... rn:5 rd:5 \
&rrxr_esz ra=%reg_movprfx
@rrxr_1 ........ .. . index:1 rm:4 ...... rn:5 rd:5 \
&rrxr_esz ra=%reg_movprfx
###########################################################################
# Instruction patterns. Grouped according to the SVE encodingindex.xhtml.
@ -767,10 +776,10 @@ DOT_zzzz 01000100 1 sz:1 0 rm:5 00000 u:1 rn:5 rd:5 \
ra=%reg_movprfx
# SVE integer dot product (indexed)
DOT_zzxw 01000100 101 index:2 rm:3 00000 u:1 rn:5 rd:5 \
sz=0 ra=%reg_movprfx
DOT_zzxw 01000100 111 index:1 rm:4 00000 u:1 rn:5 rd:5 \
sz=1 ra=%reg_movprfx
SDOT_zzxw_s 01000100 10 1 ..... 000000 ..... ..... @rrxr_2 esz=2
SDOT_zzxw_d 01000100 11 1 ..... 000000 ..... ..... @rrxr_1 esz=3
UDOT_zzxw_s 01000100 10 1 ..... 000001 ..... ..... @rrxr_2 esz=2
UDOT_zzxw_d 01000100 11 1 ..... 000001 ..... ..... @rrxr_1 esz=3
# SVE floating-point complex add (predicated)
FCADD 01100100 esz:2 00000 rot:1 100 pg:3 rm:5 rd:5 \
@ -789,12 +798,12 @@ FCMLA_zzxz 01100100 11 1 index:1 rm:4 0001 rot:2 rn:5 rd:5 \
### SVE FP Multiply-Add Indexed Group
# SVE floating-point multiply-add (indexed)
FMLA_zzxz 01100100 0.1 .. rm:3 00000 sub:1 rn:5 rd:5 \
ra=%reg_movprfx index=%index3_22_19 esz=1
FMLA_zzxz 01100100 101 index:2 rm:3 00000 sub:1 rn:5 rd:5 \
ra=%reg_movprfx esz=2
FMLA_zzxz 01100100 111 index:1 rm:4 00000 sub:1 rn:5 rd:5 \
ra=%reg_movprfx esz=3
FMLA_zzxz 01100100 0. 1 ..... 000000 ..... ..... @rrxr_3 esz=1
FMLA_zzxz 01100100 10 1 ..... 000000 ..... ..... @rrxr_2 esz=2
FMLA_zzxz 01100100 11 1 ..... 000000 ..... ..... @rrxr_1 esz=3
FMLS_zzxz 01100100 0. 1 ..... 000001 ..... ..... @rrxr_3 esz=1
FMLS_zzxz 01100100 10 1 ..... 000001 ..... ..... @rrxr_2 esz=2
FMLS_zzxz 01100100 11 1 ..... 000001 ..... ..... @rrxr_1 esz=3
### SVE FP Multiply Indexed Group

38
target/arm/translate-sve.c
View File

@ -3813,26 +3813,34 @@ static bool trans_DOT_zzzz(DisasContext *s, arg_DOT_zzzz *a)
return true;
}
static bool trans_DOT_zzxw(DisasContext *s, arg_DOT_zzxw *a)
static bool do_zzxz_ool(DisasContext *s, arg_rrxr_esz *a,
gen_helper_gvec_4 *fn)
{
static gen_helper_gvec_4 * const fns[2][2] = {
{ gen_helper_gvec_sdot_idx_b, gen_helper_gvec_sdot_idx_h },
{ gen_helper_gvec_udot_idx_b, gen_helper_gvec_udot_idx_h }
};
if (fn == NULL) {
return false;
}
if (sve_access_check(s)) {
gen_gvec_ool_zzzz(s, fns[a->u][a->sz], a->rd, a->rn, a->rm,
a->ra, a->index);
gen_gvec_ool_zzzz(s, fn, a->rd, a->rn, a->rm, a->ra, a->index);
}
return true;
}
#define DO_RRXR(NAME, FUNC) \
static bool NAME(DisasContext *s, arg_rrxr_esz *a) \
{ return do_zzxz_ool(s, a, FUNC); }
DO_RRXR(trans_SDOT_zzxw_s, gen_helper_gvec_sdot_idx_b)
DO_RRXR(trans_SDOT_zzxw_d, gen_helper_gvec_sdot_idx_h)
DO_RRXR(trans_UDOT_zzxw_s, gen_helper_gvec_udot_idx_b)
DO_RRXR(trans_UDOT_zzxw_d, gen_helper_gvec_udot_idx_h)
#undef DO_RRXR
/*
*** SVE Floating Point Multiply-Add Indexed Group
*/
static bool trans_FMLA_zzxz(DisasContext *s, arg_FMLA_zzxz *a)
static bool do_FMLA_zzxz(DisasContext *s, arg_rrxr_esz *a, bool sub)
{
static gen_helper_gvec_4_ptr * const fns[3] = {
gen_helper_gvec_fmla_idx_h,
@ -3847,13 +3855,23 @@ static bool trans_FMLA_zzxz(DisasContext *s, arg_FMLA_zzxz *a)
vec_full_reg_offset(s, a->rn),
vec_full_reg_offset(s, a->rm),
vec_full_reg_offset(s, a->ra),
status, vsz, vsz, (a->index << 1) | a->sub,
status, vsz, vsz, (a->index << 1) | sub,
fns[a->esz - 1]);
tcg_temp_free_ptr(status);
}
return true;
}
static bool trans_FMLA_zzxz(DisasContext *s, arg_FMLA_zzxz *a)
{
return do_FMLA_zzxz(s, a, false);
}
static bool trans_FMLS_zzxz(DisasContext *s, arg_FMLA_zzxz *a)
{
return do_FMLA_zzxz(s, a, true);
}
/*
*** SVE Floating Point Multiply Indexed Group
*/