DUALNUM: Narrow unary minus.

2011-03-15 17:56:55 +01:00
parent a226fb4cc7
commit dcbae09b1d
4 changed files with 30 additions and 3 deletions
--- a/src/lj_record.c
+++ b/src/lj_record.c
@@ -1666,8 +1666,7 @@ void lj_record_ins(jit_State *J)

  case BC_UNM:
    if (tref_isnumber_str(rc)) {
-      rc = lj_ir_tonum(J, rc);
-      rc = emitir(IRTN(IR_NEG), rc, lj_ir_knum_neg(J));
+      rc = lj_opt_narrow_unm(J, rc, &ix.tabv);
    } else {
      ix.tab = rc;
      copyTV(J->L, &ix.tabv, &ix.keyv);