haraldwolff/qemu-patch-raspberry4
1
0
Fork 0
Code Issues Pull requests Packages Projects Releases Wiki Activity

target-sh4: optimize xtrct

Browse source 
The register being 32 bit long, after a shift to the right by 16 bits,
the upper 16 bit are already cleared. There is no need to call ext16u
to clear them.

Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
This commit is contained in:
Aurelien Jarno 2012-09-16 13:12:20 +02:00
parent ad8d25a11f
commit f16640f47b
1 changed files with 0 additions and 1 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

1
target-sh4/translate.c
View file

@ -751,7 +751,6 @@ static void _decode_opc(DisasContext * ctx)
tcg_gen_shli_i32(high, REG(B7_4), 16);
low = tcg_temp_new();
tcg_gen_shri_i32(low, REG(B11_8), 16);
tcg_gen_ext16u_i32(low, low);
tcg_gen_or_i32(REG(B11_8), high, low);
tcg_temp_free(low);
tcg_temp_free(high);