Commit 161dec9d authored by Alistair Francis's avatar Alistair Francis Committed by Richard Henderson
Browse files

tcg/mips: Improve the add2/sub2 command to use TCG_TARGET_REG_BITS 



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

Signed-off-by: default avatarAlistair Francis <alistair.francis@wdc.com>
Message-Id: <7dfbddf7014a595150aa79011ddb342c3cc17ec3.1544648105.git.alistair.francis@wdc.com>
Reviewed-by: default avatarRichard Henderson <richard.henderson@linaro.org>
Signed-off-by: default avatarRichard Henderson <richard.henderson@linaro.org>
parent e1dcf352

tcg/mips/tcg-target.inc.c

+1 −1
Original line number Diff line number Diff line
@@ -792,7 +792,7 @@ 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);