From: Philippe Mathieu-Daudé <f4bug@amsat.org>
Date: Tue, 18 Jul 2017 04:55:34 +0000 (-0300)
Subject: target/m68k: optimize bcd_flags() using extract op
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=0d9acef24062844b96c671b4379d9fb03c3ea606;p=qemu.git

target/m68k: optimize bcd_flags() using extract op

Done with the Coccinelle semantic patch
scripts/coccinelle/tcg_gen_extract.cocci.

Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Acked-by: Laurent Vivier <laurent@vivier.eu>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Message-Id: <20170718045540.16322-5-f4bug@amsat.org>
Signed-off-by: Richard Henderson <rth@twiddle.net>
---

diff --git a/target/m68k/translate.c b/target/m68k/translate.c
index 3a519b790d..e709e6cde2 100644
--- a/target/m68k/translate.c
+++ b/target/m68k/translate.c
@@ -1749,8 +1749,7 @@ static void bcd_flags(TCGv val)
     tcg_gen_andi_i32(QREG_CC_C, val, 0x0ff);
     tcg_gen_or_i32(QREG_CC_Z, QREG_CC_Z, QREG_CC_C);
 
-    tcg_gen_shri_i32(QREG_CC_C, val, 8);
-    tcg_gen_andi_i32(QREG_CC_C, QREG_CC_C, 1);
+    tcg_gen_extract_i32(QREG_CC_C, val, 8, 1);
 
     tcg_gen_mov_i32(QREG_CC_X, QREG_CC_C);
 }