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target/arm: Convert VCMLA (scalar) to decodetree

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Convert VCMLA (scalar) in the 2reg-scalar-ext group to decodetree.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20200430181003.21682-9-peter.maydell@linaro.org
This commit is contained in:
Peter Maydell 2020-04-30 19:09:35 +01:00
parent 9a107e7b8a
commit 7e1b5d6153
3 changed files with 46 additions and 25 deletions
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26
target/arm/translate.c
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@ -7049,31 +7049,7 @@ static int disas_neon_insn_2reg_scalar_ext(DisasContext *s, uint32_t insn)
bool is_long = false, q = extract32(insn, 6, 1);
bool ptr_is_env = false;
if ((insn & 0xff000f10) == 0xfe000800) {
/* VCMLA (indexed) -- 1111 1110 S.RR .... .... 1000 ...0 .... */
int rot = extract32(insn, 20, 2);
int size = extract32(insn, 23, 1);
int index;
if (!dc_isar_feature(aa32_vcma, s)) {
return 1;
}
if (size == 0) {
if (!dc_isar_feature(aa32_fp16_arith, s)) {
return 1;
}
/* For fp16, rm is just Vm, and index is M. */
rm = extract32(insn, 0, 4);
index = extract32(insn, 5, 1);
} else {
/* For fp32, rm is the usual M:Vm, and index is 0. */
VFP_DREG_M(rm, insn);
index = 0;
}
data = (index << 2) | rot;
fn_gvec_ptr = (size ? gen_helper_gvec_fcmlas_idx
: gen_helper_gvec_fcmlah_idx);
} else if ((insn & 0xffb00f00) == 0xfe200d00) {
if ((insn & 0xffb00f00) == 0xfe200d00) {
/* V[US]DOT -- 1111 1110 0.10 .... .... 1101 .Q.U .... */
int u = extract32(insn, 4, 1);