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target/arm: Convert VFM[AS]L (scalar) to decodetree

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Convert the VFM[AS]L (scalar) insns in the 2reg-scalar-ext group
to decodetree. These are the last ones in the group so we can remove
all the legacy decode for the group.

Note that in disas_thumb2_insn() the parts of this encoding space
where the decodetree decoder returns false will correctly be directed
to illegal_op by the "(insn & (1 << 28))" check so they won't fall
into disas_coproc_insn() by mistake.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20200430181003.21682-11-peter.maydell@linaro.org
This commit is contained in:
Peter Maydell 2020-04-30 19:09:37 +01:00
parent 35f5d4d174
commit d27e82f7d0
3 changed files with 40 additions and 106 deletions
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7
target/arm/neon-shared.decode
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@ -57,3 +57,10 @@ VCMLA_scalar 1111 1110 1 . rot:2 .... .... 1000 . q:1 . 0 .... \
VDOT_scalar 1111 1110 0 . 10 .... .... 1101 . q:1 index:1 u:1 rm:4 \
vm=%vm_dp vn=%vn_dp vd=%vd_dp
%vfml_scalar_q0_rm 0:3 5:1
%vfml_scalar_q1_index 5:1 3:1
VFML_scalar 1111 1110 0 . 0 s:1 .... .... 1000 . 0 . 1 index:1 ... \
rm=%vfml_scalar_q0_rm vn=%vn_sp vd=%vd_dp q=0
VFML_scalar 1111 1110 0 . 0 s:1 .... .... 1000 . 1 . 1 . rm:3 \
index=%vfml_scalar_q1_index vn=%vn_dp vd=%vd_dp q=1