[Qemu-devel] [PATCH v1 1/1] tcg: mips: Improve the add2/sub2 command to use TCG_TARGET_REG_BITS

[Alistair Francis]

Instead of hard coding 31 for the shift right use
TCG_TARGET_REG_BITS - 1.

Signed-off-by: Alistair Francis <address@hidden>
---
 tcg/mips/tcg-target.inc.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tcg/mips/tcg-target.inc.c b/tcg/mips/tcg-target.inc.c
index cff525373b..aa7cdabf23 100644
--- a/tcg/mips/tcg-target.inc.c
+++ b/tcg/mips/tcg-target.inc.c
@@ -796,7 +796,7 @@ static void tcg_out_addsub2(TCGContext *s, TCGReg rl, 
TCGReg rh, TCGReg al,
             tcg_out_opc_imm(s, OPC_ADDIU, rl, al, bl);
             tcg_out_opc_imm(s, OPC_SLTIU, TCG_TMP0, rl, bl);
         } else if (rl == al && rl == bl) {
-            tcg_out_opc_sa(s, OPC_SRL, TCG_TMP0, al, 31);
+            tcg_out_opc_sa(s, OPC_SRL, TCG_TMP0, al, TCG_TARGET_REG_BITS - 1);
             tcg_out_opc_reg(s, OPC_ADDU, rl, al, bl);
         } else {
             tcg_out_opc_reg(s, OPC_ADDU, rl, al, bl);
-- 
2.19.1