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target/arm: Implement SVE2 gather load insns 

Add decoding logic for SVE2 64-bit/32-bit gather non-temporal
load insns.

64-bit
* LDNT1SB
* LDNT1B (vector plus scalar)
* LDNT1SH
* LDNT1H (vector plus scalar)
* LDNT1SW
* LDNT1W (vector plus scalar)
* LDNT1D (vector plus scalar)

32-bit
* LDNT1SB
* LDNT1B (vector plus scalar)
* LDNT1SH
* LDNT1H (vector plus scalar)
* LDNT1W (vector plus scalar)

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Stephen Long <steplong@quicinc.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20210525010358.152808-46-richard.henderson@linaro.org
Message-Id: <20200422152343.12493-1-steplong@quicinc.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Stephen Long 2021-05-24 18:03:11 -07:00 committed by Peter Maydell
parent 6ebca45faf
commit cf32744981
2 changed files with 19 additions and 0 deletions
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11
target/arm/sve.decode
View File

@ -1389,6 +1389,17 @@ UMLSLT_zzzw 01000100 .. 0 ..... 010 111 ..... ..... @rda_rn_rm
CMLA_zzzz 01000100 esz:2 0 rm:5 0010 rot:2 rn:5 rd:5 ra=%reg_movprfx
SQRDCMLAH_zzzz 01000100 esz:2 0 rm:5 0011 rot:2 rn:5 rd:5 ra=%reg_movprfx
### SVE2 Memory Gather Load Group
# SVE2 64-bit gather non-temporal load
# (scalar plus unpacked 32-bit unscaled offsets)
LDNT1_zprz 1100010 msz:2 00 rm:5 1 u:1 0 pg:3 rn:5 rd:5 \
&rprr_gather_load xs=0 esz=3 scale=0 ff=0
# SVE2 32-bit gather non-temporal load (scalar plus 32-bit unscaled offsets)
LDNT1_zprz 1000010 msz:2 00 rm:5 10 u:1 pg:3 rn:5 rd:5 \
&rprr_gather_load xs=0 esz=2 scale=0 ff=0
### SVE2 Memory Store Group
# SVE2 64-bit scatter non-temporal store (vector plus scalar)

8
target/arm/translate-sve.c
View File

@ -6015,6 +6015,14 @@ static bool trans_LD1_zpiz(DisasContext *s, arg_LD1_zpiz *a)
return true;
}
static bool trans_LDNT1_zprz(DisasContext *s, arg_LD1_zprz *a)
{
if (!dc_isar_feature(aa64_sve2, s)) {
return false;
}
return trans_LD1_zprz(s, a);
}
/* Indexed by [mte][be][xs][msz]. */
static gen_helper_gvec_mem_scatter * const scatter_store_fn32[2][2][2][3] = {
{ /* MTE Inactive */