[Qemu-devel] [PATCH 2/6] target/m68k: Optimize the partset instruction using deposit_i32()

[Philippe Mathieu-Daudé]

Signed-off-by: Philippe Mathieu-Daudé <address@hidden>
---
 target/m68k/translate.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/target/m68k/translate.c b/target/m68k/translate.c
index ab801b6ceb..55766fd7ef 100644
--- a/target/m68k/translate.c
+++ b/target/m68k/translate.c
@@ -720,17 +720,15 @@ static void gen_partset_reg(int opsize, TCGv reg, TCGv 
val)
     TCGv tmp;
     switch (opsize) {
     case OS_BYTE:
-        tcg_gen_andi_i32(reg, reg, 0xffffff00);
         tmp = tcg_temp_new();
         tcg_gen_ext8u_i32(tmp, val);
-        tcg_gen_or_i32(reg, reg, tmp);
+        tcg_gen_deposit_i32(reg, tmp, reg, 8, 24);
         tcg_temp_free(tmp);
         break;
     case OS_WORD:
-        tcg_gen_andi_i32(reg, reg, 0xffff0000);
         tmp = tcg_temp_new();
         tcg_gen_ext16u_i32(tmp, val);
-        tcg_gen_or_i32(reg, reg, tmp);
+        tcg_gen_deposit_i32(reg, tmp, reg, 16, 16);
         tcg_temp_free(tmp);
         break;
     case OS_LONG:
-- 
2.19.1