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condition resolution optimization

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This commit is contained in:
redcode
2013-12-24 09:05:32 +01:00
parent 254e7577bf
commit 224fb7d1ed
1 changed files with 4 additions and 4 deletions
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8
Z80.CPU/1.0/sources/Z80.c
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@@ -299,15 +299,15 @@ R_16(__tt____ , t_table, 0)
| 111 = m |
'---------*/
static const quint8 z_table[4] = {ZF, CF, PF, SF};
static const quint8 z_table[8] = {ZF, ZF, CF, CF, PF, PF, SF, SF};
Q_INLINE qboolean __zzz___(Z80 *object)
{
quint8 z = (BYTE0 & 56) >> 3;
return (F & (z_table[z >> 1]))
? !!(z & 1) /* Flag is 1 */
: !(z & 1); /* Flag is 0 */
return (F & (z_table[z]))
? (z & 1) /* Flag is 1 */
: !(z & 1); /* Flag is 0 */
}