We are not going to use ldrd for loading the comparator
for 32-bit guests, so don't limit cmp_off to 8 bits then.
This eliminates one insn in the tlb load for some guests.
Signed-off-by: Richard Henderson <rth@twiddle.net>
---
tcg/arm/tcg-target.inc.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/tcg/arm/tcg-target.inc.c b/tcg/arm/tcg-target.inc.c
index 66c369c239..6c12b169ce 100644
--- a/tcg/arm/tcg-target.inc.c
+++ b/tcg/arm/tcg-target.inc.c
@@ -1202,7 +1202,9 @@ static TCGReg tcg_out_tlb_read(TCGContext *s, TCGReg addrlo, TCGReg addrhi,
}
/* We checked that the offset is contained within 16 bits above. */
- if (add_off > 0xfff || (use_armv6_instructions && cmp_off > 0xff)) {
+ if (add_off > 0xfff
+ || (use_armv6_instructions && TARGET_LONG_BITS == 64
+ && cmp_off > 0xff)) {
tcg_out_dat_imm(s, COND_AL, ARITH_ADD, TCG_REG_R2, base,
(24 << 7) | (cmp_off >> 8));
base = TCG_REG_R2;
--
2.13.3