haraldwolff/qemu-patch-raspberry4
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target-sh4: optimize addc using add2

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Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
This commit is contained in:
Aurelien Jarno 2015-05-25 01:28:56 +02:00
parent 3408694525
commit a2368e01c9
1 changed files with 4 additions and 7 deletions
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11
target-sh4/translate.c
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@ -644,15 +644,12 @@ static void _decode_opc(DisasContext * ctx)
case 0x300e: /* addc Rm,Rn */
{
TCGv t0, t1;
t0 = tcg_temp_new();
t0 = tcg_const_tl(0);
t1 = tcg_temp_new();
tcg_gen_add_i32(t0, REG(B7_4), REG(B11_8));
tcg_gen_add_i32(t1, cpu_sr_t, t0);
tcg_gen_setcond_i32(TCG_COND_GTU, cpu_sr_t, REG(B11_8), t0);
tcg_gen_setcond_i32(TCG_COND_GTU, t0, t0, t1);
tcg_gen_or_i32(cpu_sr_t, cpu_sr_t, t0);
tcg_gen_add2_i32(t1, cpu_sr_t, cpu_sr_t, t0, REG(B7_4), t0);
tcg_gen_add2_i32(REG(B11_8), cpu_sr_t,
REG(B11_8), t0, t1, cpu_sr_t);
tcg_temp_free(t0);
tcg_gen_mov_i32(REG(B11_8), t1);
tcg_temp_free(t1);
}
return;