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target/arm: Convert ABS, NEG to decodetree

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Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20241211163036.2297116-37-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Richard Henderson 2024-12-11 10:30:03 -06:00 committed by Peter Maydell
parent df79bfcf75
commit 9187b72cff
2 changed files with 35 additions and 15 deletions
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4
target/arm/tcg/a64.decode
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@ -1632,8 +1632,12 @@ SQRSHRUN_si 0111 11110 .... ... 10001 1 ..... ..... @shri_s
SQABS_s 0101 1110 ..1 00000 01111 0 ..... ..... @rr_e SQABS_s 0101 1110 ..1 00000 01111 0 ..... ..... @rr_e
SQNEG_s 0111 1110 ..1 00000 01111 0 ..... ..... @rr_e SQNEG_s 0111 1110 ..1 00000 01111 0 ..... ..... @rr_e
ABS_s 0101 1110 111 00000 10111 0 ..... ..... @rr
NEG_s 0111 1110 111 00000 10111 0 ..... ..... @rr
# Advanced SIMD two-register miscellaneous # Advanced SIMD two-register miscellaneous
SQABS_v 0.00 1110 ..1 00000 01111 0 ..... ..... @qrr_e SQABS_v 0.00 1110 ..1 00000 01111 0 ..... ..... @qrr_e
SQNEG_v 0.10 1110 ..1 00000 01111 0 ..... ..... @qrr_e SQNEG_v 0.10 1110 ..1 00000 01111 0 ..... ..... @qrr_e
ABS_v 0.00 1110 ..1 00000 10111 0 ..... ..... @qrr_e
NEG_v 0.10 1110 ..1 00000 10111 0 ..... ..... @qrr_e

46
target/arm/tcg/translate-a64.c
View File

@ -8889,6 +8889,33 @@ static const ENVScalar1 f_scalar_sqneg = {
TRANS(SQNEG_s, do_env_scalar1, a, &f_scalar_sqneg) TRANS(SQNEG_s, do_env_scalar1, a, &f_scalar_sqneg)
TRANS(SQNEG_v, do_env_vector1, a, &f_scalar_sqneg) TRANS(SQNEG_v, do_env_vector1, a, &f_scalar_sqneg)
static bool do_scalar1_d(DisasContext *s, arg_rr *a, ArithOneOp *f)
{
if (fp_access_check(s)) {
TCGv_i64 t = read_fp_dreg(s, a->rn);
f(t, t);
write_fp_dreg(s, a->rd, t);
}
return true;
}
TRANS(ABS_s, do_scalar1_d, a, tcg_gen_abs_i64)
TRANS(NEG_s, do_scalar1_d, a, tcg_gen_neg_i64)
static bool do_gvec_fn2(DisasContext *s, arg_qrr_e *a, GVecGen2Fn *fn)
{
if (!a->q && a->esz == MO_64) {
return false;
}
if (fp_access_check(s)) {
gen_gvec_fn2(s, a->q, a->rd, a->rn, fn, a->esz);
}
return true;
}
TRANS(ABS_v, do_gvec_fn2, a, tcg_gen_gvec_abs)
TRANS(NEG_v, do_gvec_fn2, a, tcg_gen_gvec_neg)
/* Common vector code for handling integer to FP conversion */ /* Common vector code for handling integer to FP conversion */
static void handle_simd_intfp_conv(DisasContext *s, int rd, int rn, static void handle_simd_intfp_conv(DisasContext *s, int rd, int rn,
int elements, int is_signed, int elements, int is_signed,
@ -9213,13 +9240,6 @@ static void handle_2misc_64(DisasContext *s, int opcode, bool u,
case 0x9: /* CMEQ, CMLE */ case 0x9: /* CMEQ, CMLE */
cond = u ? TCG_COND_LE : TCG_COND_EQ; cond = u ? TCG_COND_LE : TCG_COND_EQ;
goto do_cmop; goto do_cmop;
case 0xb: /* ABS, NEG */
if (u) {
tcg_gen_neg_i64(tcg_rd, tcg_rn);
} else {
tcg_gen_abs_i64(tcg_rd, tcg_rn);
}
break;
case 0x2f: /* FABS */ case 0x2f: /* FABS */
gen_vfp_absd(tcg_rd, tcg_rn); gen_vfp_absd(tcg_rd, tcg_rn);
break; break;
@ -9264,6 +9284,7 @@ static void handle_2misc_64(DisasContext *s, int opcode, bool u,
break; break;
default: default:
case 0x7: /* SQABS, SQNEG */ case 0x7: /* SQABS, SQNEG */
case 0xb: /* ABS, NEG */
g_assert_not_reached(); g_assert_not_reached();
} }
} }
@ -9614,7 +9635,6 @@ static void disas_simd_scalar_two_reg_misc(DisasContext *s, uint32_t insn)
/* fall through */ /* fall through */
case 0x8: /* CMGT, CMGE */ case 0x8: /* CMGT, CMGE */
case 0x9: /* CMEQ, CMLE */ case 0x9: /* CMEQ, CMLE */
case 0xb: /* ABS, NEG */
if (size != 3) { if (size != 3) {
unallocated_encoding(s); unallocated_encoding(s);
return; return;
@ -9705,6 +9725,7 @@ static void disas_simd_scalar_two_reg_misc(DisasContext *s, uint32_t insn)
default: default:
case 0x3: /* USQADD / SUQADD */ case 0x3: /* USQADD / SUQADD */
case 0x7: /* SQABS / SQNEG */ case 0x7: /* SQABS / SQNEG */
case 0xb: /* ABS, NEG */
unallocated_encoding(s); unallocated_encoding(s);
return; return;
} }
@ -10103,7 +10124,6 @@ static void disas_simd_two_reg_misc(DisasContext *s, uint32_t insn)
/* fall through */ /* fall through */
case 0x8: /* CMGT, CMGE */ case 0x8: /* CMGT, CMGE */
case 0x9: /* CMEQ, CMLE */ case 0x9: /* CMEQ, CMLE */
case 0xb: /* ABS, NEG */
if (size == 3 && !is_q) { if (size == 3 && !is_q) {
unallocated_encoding(s); unallocated_encoding(s);
return; return;
@ -10280,6 +10300,7 @@ static void disas_simd_two_reg_misc(DisasContext *s, uint32_t insn)
default: default:
case 0x3: /* SUQADD, USQADD */ case 0x3: /* SUQADD, USQADD */
case 0x7: /* SQABS, SQNEG */ case 0x7: /* SQABS, SQNEG */
case 0xb: /* ABS, NEG */
unallocated_encoding(s); unallocated_encoding(s);
return; return;
} }
@ -10324,12 +10345,7 @@ static void disas_simd_two_reg_misc(DisasContext *s, uint32_t insn)
gen_gvec_fn2(s, is_q, rd, rn, gen_gvec_clt0, size); gen_gvec_fn2(s, is_q, rd, rn, gen_gvec_clt0, size);
return; return;
case 0xb: case 0xb:
if (u) { /* ABS, NEG */ g_assert_not_reached();
gen_gvec_fn2(s, is_q, rd, rn, tcg_gen_gvec_neg, size);
} else {
gen_gvec_fn2(s, is_q, rd, rn, tcg_gen_gvec_abs, size);
}
return;
} }
if (size == 3) { if (size == 3) {