[PATCH] target/m68k: Remove unused variable in ABCD/SBCD memory opcodes

[Philippe Mathieu-Daudé]

The ABCD / SBCD memory opcodes (introduced in commit fb5543d8200)
don't use their "addr" variable.

Remove the unused variable and pass a NULL argument instead to
gen_ea_mode(). This fixes warnings generated when building with
CFLAGS=-O3 (using GCC 10.2.1 20201125):

  target/m68k/translate.c: In function ‘disas_sbcd_mem’:
  target/m68k/translate.c:897:13: warning: ‘addr’ may be used uninitialized in 
this function [-Wmaybe-uninitialized]
    897 |             delay_set_areg(s, reg0, tmp, false);
        |             ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  target/m68k/translate.c:1866:21: note: ‘addr’ was declared here
   1866 |     TCGv src, dest, addr;
        |                     ^~~~

  target/m68k/translate.c: In function ‘disas_abcd_mem’:
  target/m68k/translate.c:897:13: warning: ‘addr’ may be used uninitialized in 
this function [-Wmaybe-uninitialized]
    897 |             delay_set_areg(s, reg0, tmp, false);
        |             ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  target/m68k/translate.c:1829:21: note: ‘addr’ was declared here
   1829 |     TCGv src, dest, addr;
        |                     ^~~~

Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
---
 target/m68k/translate.c | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/target/m68k/translate.c b/target/m68k/translate.c
index 200018ae6a6..5cdd026a4b2 100644
--- a/target/m68k/translate.c
+++ b/target/m68k/translate.c
@@ -1826,7 +1826,7 @@ DISAS_INSN(abcd_reg)
 
 DISAS_INSN(abcd_mem)
 {
-    TCGv src, dest, addr;
+    TCGv src, dest;
 
     gen_flush_flags(s); /* !Z is sticky */
 
@@ -1835,11 +1835,11 @@ DISAS_INSN(abcd_mem)
     src = gen_ea_mode(env, s, 4, REG(insn, 0), OS_BYTE,
                       NULL_QREG, NULL, EA_LOADU, IS_USER(s));
     dest = gen_ea_mode(env, s, 4, REG(insn, 9), OS_BYTE,
-                       NULL_QREG, &addr, EA_LOADU, IS_USER(s));
+                       NULL_QREG, NULL, EA_LOADU, IS_USER(s));
 
     bcd_add(dest, src);
 
-    gen_ea_mode(env, s, 4, REG(insn, 9), OS_BYTE, dest, &addr,
+    gen_ea_mode(env, s, 4, REG(insn, 9), OS_BYTE, dest, NULL,
                 EA_STORE, IS_USER(s));
 
     bcd_flags(dest);
@@ -1863,7 +1863,7 @@ DISAS_INSN(sbcd_reg)
 
 DISAS_INSN(sbcd_mem)
 {
-    TCGv src, dest, addr;
+    TCGv src, dest;
 
     gen_flush_flags(s); /* !Z is sticky */
 
@@ -1872,11 +1872,11 @@ DISAS_INSN(sbcd_mem)
     src = gen_ea_mode(env, s, 4, REG(insn, 0), OS_BYTE,
                       NULL_QREG, NULL, EA_LOADU, IS_USER(s));
     dest = gen_ea_mode(env, s, 4, REG(insn, 9), OS_BYTE,
-                       NULL_QREG, &addr, EA_LOADU, IS_USER(s));
+                       NULL_QREG, NULL, EA_LOADU, IS_USER(s));
 
     bcd_sub(dest, src);
 
-    gen_ea_mode(env, s, 4, REG(insn, 9), OS_BYTE, dest, &addr,
+    gen_ea_mode(env, s, 4, REG(insn, 9), OS_BYTE, dest, NULL,
                 EA_STORE, IS_USER(s));
 
     bcd_flags(dest);
-- 
2.26.3