vitalif
/
mirror_qemu
mirror of https://github.com/proxmox/mirror_qemu
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

target/arm: Use tcg_gen_rotri_i32 for gen_swap_half 

Rotate is the more compact and obvious way to swap 16-bit
elements of a 32-bit word.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20190808202616.13782-6-richard.henderson@linaro.org
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
master
Richard Henderson 2019-08-08 13:26:14 -07:00 committed by Peter Maydell
parent dd861b3f29
commit adefba76e8
1 changed files with 1 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
target/arm/translate.c
View File

@ -444,11 +444,7 @@ static TCGv_i64 gen_muls_i64_i32(TCGv_i32 a, TCGv_i32 b)
/* Swap low and high halfwords. */
static void gen_swap_half(TCGv_i32 var)
{
TCGv_i32 tmp = tcg_temp_new_i32();
tcg_gen_shri_i32(tmp, var, 16);
tcg_gen_shli_i32(var, var, 16);
tcg_gen_or_i32(var, var, tmp);
tcg_temp_free_i32(tmp);
tcg_gen_rotri_i32(var, var, 16);
}
/* Dual 16-bit add. Result placed in t0 and t1 is marked as dead.