tcg-ppc64: Use MFOCRF instead of MFCR
It takes half the cycles to read one CR register instead of all 8. This is a backward compatible addition to the ISA, so chips prior to Power 2.00 spec will simply continue to read the entire CR register. Reviewed-by: Aurelien Jarno <aurelien@aurel32.net> Signed-off-by: Richard Henderson <rth@twiddle.net>
This commit is contained in:
parent
991041a4eb
commit
6995a4a063
|
@ -382,6 +382,7 @@ static int tcg_target_const_match (tcg_target_long val,
|
||||||
#define SRAWI XO31(824)
|
#define SRAWI XO31(824)
|
||||||
#define NEG XO31(104)
|
#define NEG XO31(104)
|
||||||
#define MFCR XO31( 19)
|
#define MFCR XO31( 19)
|
||||||
|
#define MFOCRF (MFCR | (1u << 20))
|
||||||
#define NOR XO31(124)
|
#define NOR XO31(124)
|
||||||
#define CNTLZW XO31( 26)
|
#define CNTLZW XO31( 26)
|
||||||
#define CNTLZD XO31( 58)
|
#define CNTLZD XO31( 58)
|
||||||
|
@ -430,6 +431,7 @@ static int tcg_target_const_match (tcg_target_long val,
|
||||||
#define ME(e) ((e)<<1)
|
#define ME(e) ((e)<<1)
|
||||||
#define BO(o) ((o)<<21)
|
#define BO(o) ((o)<<21)
|
||||||
#define MB64(b) ((b)<<5)
|
#define MB64(b) ((b)<<5)
|
||||||
|
#define FXM(b) (1 << (19 - (b)))
|
||||||
|
|
||||||
#define LK 1
|
#define LK 1
|
||||||
|
|
||||||
|
@ -1226,10 +1228,12 @@ static void tcg_out_setcond (TCGContext *s, TCGType type, TCGCond cond,
|
||||||
sh = 31;
|
sh = 31;
|
||||||
crop = CRNOR | BT (7, CR_EQ) | BA (7, CR_GT) | BB (7, CR_GT);
|
crop = CRNOR | BT (7, CR_EQ) | BA (7, CR_GT) | BB (7, CR_GT);
|
||||||
crtest:
|
crtest:
|
||||||
tcg_out_cmp (s, cond, arg1, arg2, const_arg2, 7, type);
|
tcg_out_cmp(s, cond, arg1, arg2, const_arg2, 7, type);
|
||||||
if (crop) tcg_out32 (s, crop);
|
if (crop) {
|
||||||
tcg_out32 (s, MFCR | RT (0));
|
tcg_out32(s, crop);
|
||||||
tcg_out_rlw(s, RLWINM, arg0, 0, sh, 31, 31);
|
}
|
||||||
|
tcg_out32(s, MFOCRF | RT(TCG_REG_R0) | FXM(7));
|
||||||
|
tcg_out_rlw(s, RLWINM, arg0, TCG_REG_R0, sh, 31, 31);
|
||||||
break;
|
break;
|
||||||
|
|
||||||
default:
|
default:
|
||||||
|
|
Loading…
Reference in a new issue