From: Richard Henderson <richard.henderson@linaro.org>
Extract is a compact combination of shift + and.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20190808202616.13782-2-richard.henderson@linaro.org
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
target/arm/translate.c | 9 +--------
1 file changed, 1 insertion(+), 8 deletions(-)
diff --git a/target/arm/translate.c b/target/arm/translate.c
index 34e65cd80c0..14d6b6d4d28 100644
@@ -605,14 +605,7 @@ static void gen_sar(TCGv_i32 dest, TCGv_i32 t0, TCGv_i32 t1)
static void shifter_out_im(TCGv_i32 var, int shift)
{
- if (shift == 0) {
- tcg_gen_andi_i32(cpu_CF, var, 1);
- } else {
- tcg_gen_shri_i32(cpu_CF, var, shift);
- if (shift != 31) {
- tcg_gen_andi_i32(cpu_CF, cpu_CF, 1);
- }
- }
+ tcg_gen_extract_i32(cpu_CF, var, shift, 1);
}
/* Shift by immediate. Includes special handling for shift == 0. */
--
2.20.1