[Qemu-devel] [PULL 12/14] target/alpha: optimize gen_cvtlq() using deposit op

[Richard Henderson]

From: Philippe Mathieu-Daudé <address@hidden>

Suggested-by: Richard Henderson <address@hidden>
Signed-off-by: Philippe Mathieu-Daudé <address@hidden>
Message-Id: <address@hidden>
Signed-off-by: Richard Henderson <address@hidden>
---
 target/alpha/translate.c | 8 +++-----
 1 file changed, 3 insertions(+), 5 deletions(-)

diff --git a/target/alpha/translate.c b/target/alpha/translate.c
index 232af9e..2bffbae 100644
--- a/target/alpha/translate.c
+++ b/target/alpha/translate.c
@@ -756,11 +756,9 @@ static void gen_cvtlq(TCGv vc, TCGv vb)
 
     /* The arithmetic right shift here, plus the sign-extended mask below
        yields a sign-extended result without an explicit ext32s_i64.  */
-    tcg_gen_sari_i64(tmp, vb, 32);
-    tcg_gen_shri_i64(vc, vb, 29);
-    tcg_gen_andi_i64(tmp, tmp, (int32_t)0xc0000000);
-    tcg_gen_andi_i64(vc, vc, 0x3fffffff);
-    tcg_gen_or_i64(vc, vc, tmp);
+    tcg_gen_shri_i64(tmp, vb, 29);
+    tcg_gen_sari_i64(vc, vb, 32);
+    tcg_gen_deposit_i64(vc, vc, tmp, 0, 30);
 
     tcg_temp_free(tmp);
 }
-- 
2.9.4