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target-sh4: use rotl/rotr when possible 

Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
This commit is contained in:
Aurelien Jarno 2011-01-13 08:20:39 +01:00
parent 4cd31ad264
commit 2411fde9a4
1 changed files with 3 additions and 5 deletions
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8
target-sh4/translate.c
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@ -1690,14 +1690,12 @@ static void _decode_opc(DisasContext * ctx)
}
return;
case 0x4004: /* rotl Rn */
gen_copy_bit_i32(cpu_sr, 0, REG(B11_8), 31);
tcg_gen_shli_i32(REG(B11_8), REG(B11_8), 1);
gen_copy_bit_i32(REG(B11_8), 0, cpu_sr, 0);
tcg_gen_rotli_i32(REG(B11_8), REG(B11_8), 1);
gen_copy_bit_i32(cpu_sr, 0, REG(B11_8), 0);
return;
case 0x4005: /* rotr Rn */
gen_copy_bit_i32(cpu_sr, 0, REG(B11_8), 0);
tcg_gen_shri_i32(REG(B11_8), REG(B11_8), 1);
gen_copy_bit_i32(REG(B11_8), 31, cpu_sr, 0);
tcg_gen_rotri_i32(REG(B11_8), REG(B11_8), 1);
return;
case 0x4000: /* shll Rn */
case 0x4020: /* shal Rn */