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qemu-e2k
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e2k: optimize sxt for imm5 in src1

This commit is contained in:
Denis Drakhnia 2024-01-01 10:08:54 +02:00
parent 1a5aeee39a
commit 36ef654ea1
1 changed files with 46 additions and 1 deletions
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47
target/e2k/translate.c
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@ -4844,6 +4844,51 @@ IMPL_ALOPF21_ENV(gen_alopf21_env_qqqq, q, q, q, q)
IMPL_ALOPF21_LOG(gen_alopf21_log_dddd, d, d, d, d)
IMPL_ALOPF21_LOG(gen_alopf21_log_qqqq, q, q, q, q)
static void gen_sxt(Alop *alop)
{
tagged(s) s1 = gen_tagged_src1(s, alop);
tagged(s) s2 = gen_tagged_src2(s, alop);
tagged(d) r = tagged_temp_new(d);
gen_tag2(d, r, s1, s2);
if (IS_IMM5(alop->als.src1)) {
uint8_t imm = GET_IMM5(alop->als.src1);
if (imm & 4) {
tcg_gen_extu_i32_i64(r.val, s2.val);
switch (imm & 3) {
case 0:
tcg_gen_ext8u_i64(r.val, r.val);
break;
case 1:
tcg_gen_ext16u_i64(r.val, r.val);
break;
default:
break;
}
} else {
tcg_gen_ext_i32_i64(r.val, s2.val);
switch (imm & 3) {
case 0:
tcg_gen_ext8s_i64(r.val, r.val);
break;
case 1:
tcg_gen_ext16s_i64(r.val, r.val);
break;
default:
break;
}
}
} else {
gen_helper_sxt(r.val, s1.val, s2.val);
}
gen_al_result(d, alop, r);
}
static void alop_table_find(DisasContext *ctx, Alop *alop, AlesFlag ales_present)
{
/* ALES2/5 may be allocated but must not be used */
@ -4927,7 +4972,7 @@ static void gen_alop_simple(Alop *alop)
case OP_XORD: gen_alopf1_ddd(alop, tcg_gen_xor_i64); break;
case OP_XORNS: gen_alopf1_sss(alop, gen_xorn_i32); break;
case OP_XORND: gen_alopf1_ddd(alop, gen_xorn_i64); break;
case OP_SXT: gen_alopf1_ssd(alop, gen_helper_sxt); break;
case OP_SXT: gen_sxt(alop); break;
case OP_ADDS: gen_alopf1_sss(alop, tcg_gen_add_i32); break;
case OP_ADDD: gen_alopf1_ddd(alop, tcg_gen_add_i64); break;
case OP_SUBS: gen_alopf1_sss(alop, tcg_gen_sub_i32); break;