diff options
| -rw-r--r-- | tcg/s390/tcg-target.inc.c | 50 |
1 files changed, 30 insertions, 20 deletions
diff --git a/tcg/s390/tcg-target.inc.c b/tcg/s390/tcg-target.inc.c index 253d4a0a0b..23115b5a62 100644 --- a/tcg/s390/tcg-target.inc.c +++ b/tcg/s390/tcg-target.inc.c @@ -1093,33 +1093,43 @@ static void tgen64_xori(TCGContext *s, TCGReg dest, tcg_target_ulong val) } static int tgen_cmp(TCGContext *s, TCGType type, TCGCond c, TCGReg r1, - TCGArg c2, int c2const) + TCGArg c2, bool c2const, bool need_carry) { bool is_unsigned = is_unsigned_cond(c); if (c2const) { if (c2 == 0) { + if (!(is_unsigned && need_carry)) { + if (type == TCG_TYPE_I32) { + tcg_out_insn(s, RR, LTR, r1, r1); + } else { + tcg_out_insn(s, RRE, LTGR, r1, r1); + } + return tcg_cond_to_ltr_cond[c]; + } + /* If we only got here because of load-and-test, + and we couldn't use that, then we need to load + the constant into a register. */ + if (!(facilities & FACILITY_EXT_IMM)) { + c2 = TCG_TMP0; + tcg_out_movi(s, type, c2, 0); + goto do_reg; + } + } + if (is_unsigned) { if (type == TCG_TYPE_I32) { - tcg_out_insn(s, RR, LTR, r1, r1); + tcg_out_insn(s, RIL, CLFI, r1, c2); } else { - tcg_out_insn(s, RRE, LTGR, r1, r1); + tcg_out_insn(s, RIL, CLGFI, r1, c2); } - return tcg_cond_to_ltr_cond[c]; } else { - if (is_unsigned) { - if (type == TCG_TYPE_I32) { - tcg_out_insn(s, RIL, CLFI, r1, c2); - } else { - tcg_out_insn(s, RIL, CLGFI, r1, c2); - } + if (type == TCG_TYPE_I32) { + tcg_out_insn(s, RIL, CFI, r1, c2); } else { - if (type == TCG_TYPE_I32) { - tcg_out_insn(s, RIL, CFI, r1, c2); - } else { - tcg_out_insn(s, RIL, CGFI, r1, c2); - } + tcg_out_insn(s, RIL, CGFI, r1, c2); } } } else { + do_reg: if (is_unsigned) { if (type == TCG_TYPE_I32) { tcg_out_insn(s, RR, CLR, r1, c2); @@ -1148,7 +1158,7 @@ static void tgen_setcond(TCGContext *s, TCGType type, TCGCond cond, do_greater: /* The result of a compare has CC=2 for GT and CC=3 unused. ADD LOGICAL WITH CARRY considers (CC & 2) the carry bit. */ - tgen_cmp(s, type, cond, c1, c2, c2const); + tgen_cmp(s, type, cond, c1, c2, c2const, true); tcg_out_movi(s, type, dest, 0); tcg_out_insn(s, RRE, ALCGR, dest, dest); return; @@ -1219,7 +1229,7 @@ static void tgen_setcond(TCGContext *s, TCGType type, TCGCond cond, break; } - cc = tgen_cmp(s, type, cond, c1, c2, c2const); + cc = tgen_cmp(s, type, cond, c1, c2, c2const, false); if (facilities & FACILITY_LOAD_ON_COND) { /* Emit: d = 0, t = 1, d = (cc ? t : d). */ tcg_out_movi(s, TCG_TYPE_I64, dest, 0); @@ -1238,11 +1248,11 @@ static void tgen_movcond(TCGContext *s, TCGType type, TCGCond c, TCGReg dest, { int cc; if (facilities & FACILITY_LOAD_ON_COND) { - cc = tgen_cmp(s, type, c, c1, c2, c2const); + cc = tgen_cmp(s, type, c, c1, c2, c2const, false); tcg_out_insn(s, RRF, LOCGR, dest, r3, cc); } else { c = tcg_invert_cond(c); - cc = tgen_cmp(s, type, c, c1, c2, c2const); + cc = tgen_cmp(s, type, c, c1, c2, c2const, false); /* Emit: if (cc) goto over; dest = r3; over: */ tcg_out_insn(s, RI, BRC, cc, (4 + 4) >> 1); @@ -1374,7 +1384,7 @@ static void tgen_brcond(TCGContext *s, TCGType type, TCGCond c, } } - cc = tgen_cmp(s, type, c, r1, c2, c2const); + cc = tgen_cmp(s, type, c, r1, c2, c2const, false); tgen_branch(s, cc, l); } |