target/arm: Convert MLA, MLS to decodetree
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20240528203044.612851-30-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
diff --git a/target/arm/tcg/a64.decode b/target/arm/tcg/a64.decode
index 3ea0643..2dea68a 100644
--- a/target/arm/tcg/a64.decode
+++ b/target/arm/tcg/a64.decode
@@ -928,6 +928,8 @@
UABA_v 0.10 1110 ..1 ..... 01111 1 ..... ..... @qrrr_e
MUL_v 0.00 1110 ..1 ..... 10011 1 ..... ..... @qrrr_e
PMUL_v 0.10 1110 001 ..... 10011 1 ..... ..... @qrrr_b
+MLA_v 0.00 1110 ..1 ..... 10010 1 ..... ..... @qrrr_e
+MLS_v 0.10 1110 ..1 ..... 10010 1 ..... ..... @qrrr_e
### Advanced SIMD scalar x indexed element
@@ -972,3 +974,9 @@
MUL_vi 0.00 1111 01 .. .... 1000 . 0 ..... ..... @qrrx_h
MUL_vi 0.00 1111 10 . ..... 1000 . 0 ..... ..... @qrrx_s
+
+MLA_vi 0.10 1111 01 .. .... 0000 . 0 ..... ..... @qrrx_h
+MLA_vi 0.10 1111 10 . ..... 0000 . 0 ..... ..... @qrrx_s
+
+MLS_vi 0.10 1111 01 .. .... 0100 . 0 ..... ..... @qrrx_h
+MLS_vi 0.10 1111 10 . ..... 0100 . 0 ..... ..... @qrrx_s
diff --git a/target/arm/tcg/translate-a64.c b/target/arm/tcg/translate-a64.c
index 1909d14..c4601cd 100644
--- a/target/arm/tcg/translate-a64.c
+++ b/target/arm/tcg/translate-a64.c
@@ -5470,6 +5470,8 @@
TRANS(UABD_v, do_gvec_fn3_no64, a, gen_gvec_uabd)
TRANS(MUL_v, do_gvec_fn3_no64, a, tcg_gen_gvec_mul)
TRANS(PMUL_v, do_gvec_op3_ool, a, 0, gen_helper_gvec_pmul_b)
+TRANS(MLA_v, do_gvec_fn3_no64, a, gen_gvec_mla)
+TRANS(MLS_v, do_gvec_fn3_no64, a, gen_gvec_mls)
static bool do_cmop_v(DisasContext *s, arg_qrrr_e *a, TCGCond cond)
{
@@ -5712,6 +5714,24 @@
};
TRANS(MUL_vi, do_int3_vector_idx, a, f_vector_idx_mul)
+static bool do_mla_vector_idx(DisasContext *s, arg_qrrx_e *a, bool sub)
+{
+ static gen_helper_gvec_4 * const fns[2][2] = {
+ { gen_helper_gvec_mla_idx_h, gen_helper_gvec_mls_idx_h },
+ { gen_helper_gvec_mla_idx_s, gen_helper_gvec_mls_idx_s },
+ };
+
+ assert(a->esz == MO_16 || a->esz == MO_32);
+ if (fp_access_check(s)) {
+ gen_gvec_op4_ool(s, a->q, a->rd, a->rn, a->rm, a->rd,
+ a->idx, fns[a->esz - 1][sub]);
+ }
+ return true;
+}
+
+TRANS(MLA_vi, do_mla_vector_idx, a, false)
+TRANS(MLS_vi, do_mla_vector_idx, a, true)
+
/*
* Advanced SIMD scalar pairwise
*/
@@ -10945,12 +10965,6 @@
int rd = extract32(insn, 0, 5);
switch (opcode) {
- case 0x12: /* MLA, MLS */
- if (size == 3) {
- unallocated_encoding(s);
- return;
- }
- break;
case 0x16: /* SQDMULH, SQRDMULH */
if (size == 0 || size == 3) {
unallocated_encoding(s);
@@ -10981,6 +10995,7 @@
case 0x0f: /* SABA, UABA */
case 0x10: /* ADD, SUB */
case 0x11: /* CMTST, CMEQ */
+ case 0x12: /* MLA, MLS */
case 0x13: /* MUL, PMUL */
unallocated_encoding(s);
return;
@@ -10991,13 +11006,6 @@
}
switch (opcode) {
- case 0x12: /* MLA, MLS */
- if (u) {
- gen_gvec_fn3(s, is_q, rd, rn, rm, gen_gvec_mls, size);
- } else {
- gen_gvec_fn3(s, is_q, rd, rn, rm, gen_gvec_mla, size);
- }
- return;
case 0x16: /* SQDMULH, SQRDMULH */
{
static gen_helper_gvec_3_ptr * const fns[2][2] = {
@@ -12204,13 +12212,6 @@
TCGv_ptr fpst;
switch (16 * u + opcode) {
- case 0x10: /* MLA */
- case 0x14: /* MLS */
- if (is_scalar) {
- unallocated_encoding(s);
- return;
- }
- break;
case 0x02: /* SMLAL, SMLAL2 */
case 0x12: /* UMLAL, UMLAL2 */
case 0x06: /* SMLSL, SMLSL2 */
@@ -12292,6 +12293,8 @@
case 0x05: /* FMLS */
case 0x08: /* MUL */
case 0x09: /* FMUL */
+ case 0x10: /* MLA */
+ case 0x14: /* MLS */
case 0x18: /* FMLAL2 */
case 0x19: /* FMULX */
case 0x1c: /* FMLSL2 */
@@ -12412,40 +12415,6 @@
: gen_helper_gvec_fcmlah_idx);
}
return;
-
- case 0x10: /* MLA */
- if (!is_long && !is_scalar) {
- static gen_helper_gvec_4 * const fns[3] = {
- gen_helper_gvec_mla_idx_h,
- gen_helper_gvec_mla_idx_s,
- gen_helper_gvec_mla_idx_d,
- };
- tcg_gen_gvec_4_ool(vec_full_reg_offset(s, rd),
- vec_full_reg_offset(s, rn),
- vec_full_reg_offset(s, rm),
- vec_full_reg_offset(s, rd),
- is_q ? 16 : 8, vec_full_reg_size(s),
- index, fns[size - 1]);
- return;
- }
- break;
-
- case 0x14: /* MLS */
- if (!is_long && !is_scalar) {
- static gen_helper_gvec_4 * const fns[3] = {
- gen_helper_gvec_mls_idx_h,
- gen_helper_gvec_mls_idx_s,
- gen_helper_gvec_mls_idx_d,
- };
- tcg_gen_gvec_4_ool(vec_full_reg_offset(s, rd),
- vec_full_reg_offset(s, rn),
- vec_full_reg_offset(s, rm),
- vec_full_reg_offset(s, rd),
- is_q ? 16 : 8, vec_full_reg_size(s),
- index, fns[size - 1]);
- return;
- }
- break;
}
if (size == 3) {
