From: Nikunj A Dadhania <nikunj@linux.vnet.ibm.com>
Date: Wed, 22 Feb 2017 11:44:35 +0000 (+0530)
Subject: target/ppc: optimize gen_write_xer()
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=1bd33d0d7cc47bed75e14f2cea3c7253f8017495;p=qemu.git

target/ppc: optimize gen_write_xer()

Signed-off-by: Nikunj A Dadhania <nikunj@linux.vnet.ibm.com>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
---

diff --git a/target/ppc/translate.c b/target/ppc/translate.c
index 3ba2616b8a..b09e16ff76 100644
--- a/target/ppc/translate.c
+++ b/target/ppc/translate.c
@@ -3724,12 +3724,9 @@ static void gen_write_xer(TCGv src)
 {
     tcg_gen_andi_tl(cpu_xer, src,
                     ~((1u << XER_SO) | (1u << XER_OV) | (1u << XER_CA)));
-    tcg_gen_shri_tl(cpu_so, src, XER_SO);
-    tcg_gen_shri_tl(cpu_ov, src, XER_OV);
-    tcg_gen_shri_tl(cpu_ca, src, XER_CA);
-    tcg_gen_andi_tl(cpu_so, cpu_so, 1);
-    tcg_gen_andi_tl(cpu_ov, cpu_ov, 1);
-    tcg_gen_andi_tl(cpu_ca, cpu_ca, 1);
+    tcg_gen_extract_tl(cpu_so, src, XER_SO, 1);
+    tcg_gen_extract_tl(cpu_ov, src, XER_OV, 1);
+    tcg_gen_extract_tl(cpu_ca, src, XER_CA, 1);
 }
 
 /* mcrxr */