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target/arm: Convert Neon VCVT fp size field to MO_* in decode 

Convert the insns using the 2reg_vcvt and 2reg_vcvt_f16 formats
to pass the size through to the trans function as a MO_* value
rather than the '0==f32, 1==f16' used in the fp 3-same encodings.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20200903133209.5141-3-peter.maydell@linaro.org
This commit is contained in:
Peter Maydell 2020-09-03 14:32:08 +01:00
parent 6cf0f240e0
commit 0ae715c658
2 changed files with 3 additions and 4 deletions
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3
target/arm/neon-dp.decode
View File

@ -256,9 +256,8 @@ VMINNM_fp_3s 1111 001 1 0 . 1 . .... .... 1111 ... 1 .... @3same_fp
@2reg_shll_b .... ... . . . 001 shift:3 .... .... 0 . . . .... \
&2reg_shift vm=%vm_dp vd=%vd_dp size=0 q=0
# We use size=0 for fp32 and size=1 for fp16 to match the 3-same encodings.
@2reg_vcvt .... ... . . . 1 ..... .... .... . q:1 . . .... \
&2reg_shift vm=%vm_dp vd=%vd_dp size=0 shift=%neon_rshift_i5
&2reg_shift vm=%vm_dp vd=%vd_dp size=2 shift=%neon_rshift_i5
@2reg_vcvt_f16 .... ... . . . 11 .... .... .... . q:1 . . .... \
&2reg_shift vm=%vm_dp vd=%vd_dp size=1 shift=%neon_rshift_i4

4
target/arm/translate-neon.c.inc
View File

@ -1626,7 +1626,7 @@ static bool do_fp_2sh(DisasContext *s, arg_2reg_shift *a,
return false;
}
if (a->size != 0) {
if (a->size == MO_16) {
if (!dc_isar_feature(aa32_fp16_arith, s)) {
return false;
}
@ -1646,7 +1646,7 @@ static bool do_fp_2sh(DisasContext *s, arg_2reg_shift *a,
return true;
}
fpst = fpstatus_ptr(a->size ? FPST_STD_F16 : FPST_STD);
fpst = fpstatus_ptr(a->size == MO_16 ? FPST_STD_F16 : FPST_STD);
tcg_gen_gvec_2_ptr(rd_ofs, rm_ofs, fpst, vec_size, vec_size, a->shift, fn);
tcg_temp_free_ptr(fpst);
return true;