diff options
Diffstat (limited to 'target/arm/tcg/translate-a64.c')
| -rw-r--r-- | target/arm/tcg/translate-a64.c | 22 |
1 files changed, 9 insertions, 13 deletions
diff --git a/target/arm/tcg/translate-a64.c b/target/arm/tcg/translate-a64.c index 5fa1257d32..da686cc953 100644 --- a/target/arm/tcg/translate-a64.c +++ b/target/arm/tcg/translate-a64.c @@ -4935,9 +4935,12 @@ static void disas_cond_select(DisasContext *s, uint32_t insn) if (rn == 31 && rm == 31 && (else_inc ^ else_inv)) { /* CSET & CSETM. */ - tcg_gen_setcond_i64(tcg_invert_cond(c.cond), tcg_rd, c.value, zero); if (else_inv) { - tcg_gen_neg_i64(tcg_rd, tcg_rd); + tcg_gen_negsetcond_i64(tcg_invert_cond(c.cond), + tcg_rd, c.value, zero); + } else { + tcg_gen_setcond_i64(tcg_invert_cond(c.cond), + tcg_rd, c.value, zero); } } else { TCGv_i64 t_true = cpu_reg(s, rn); @@ -8670,13 +8673,10 @@ static void handle_3same_64(DisasContext *s, int opcode, bool u, } break; case 0x6: /* CMGT, CMHI */ - /* 64 bit integer comparison, result = test ? (2^64 - 1) : 0. - * We implement this using setcond (test) and then negating. - */ cond = u ? TCG_COND_GTU : TCG_COND_GT; do_cmop: - tcg_gen_setcond_i64(cond, tcg_rd, tcg_rn, tcg_rm); - tcg_gen_neg_i64(tcg_rd, tcg_rd); + /* 64 bit integer comparison, result = test ? -1 : 0. */ + tcg_gen_negsetcond_i64(cond, tcg_rd, tcg_rn, tcg_rm); break; case 0x7: /* CMGE, CMHS */ cond = u ? TCG_COND_GEU : TCG_COND_GE; @@ -9265,14 +9265,10 @@ static void handle_2misc_64(DisasContext *s, int opcode, bool u, } break; case 0xa: /* CMLT */ - /* 64 bit integer comparison against zero, result is - * test ? (2^64 - 1) : 0. We implement via setcond(!test) and - * subtracting 1. - */ cond = TCG_COND_LT; do_cmop: - tcg_gen_setcondi_i64(cond, tcg_rd, tcg_rn, 0); - tcg_gen_neg_i64(tcg_rd, tcg_rd); + /* 64 bit integer comparison against zero, result is test ? -1 : 0. */ + tcg_gen_negsetcond_i64(cond, tcg_rd, tcg_rn, tcg_constant_i64(0)); break; case 0x8: /* CMGT, CMGE */ cond = u ? TCG_COND_GE : TCG_COND_GT; |