tcg: Clean up local variable shadowing

Fix:

  tcg/tcg.c:2551:27: error: declaration shadows a local variable [-Werror,-Wshadow]
                    MemOp op = get_memop(oi);
                          ^
  tcg/tcg.c:2437:12: note: previous declaration is here
    TCGOp *op;
           ^
  accel/tcg/tb-maint.c:245:18: error: declaration shadows a local variable [-Werror,-Wshadow]
        for (int i = 0; i < V_L2_SIZE; i++) {
                 ^
  accel/tcg/tb-maint.c:210:9: note: previous declaration is here
    int i;
        ^

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-ID: <20230904161235.84651-2-philmd@linaro.org>
Signed-off-by: Markus Armbruster <armbru@redhat.com>

accel/tcg/tb-maint.c

@@ -207,13 +207,12 @@ static PageDesc *page_find_alloc(tb_page_addr_t index, bool alloc)
 {
     PageDesc *pd;
     void **lp;
-    int i;
 
     /* Level 1.  Always allocated.  */
     lp = l1_map + ((index >> v_l1_shift) & (v_l1_size - 1));
 
     /* Level 2..N-1.  */
-    for (i = v_l2_levels; i > 0; i--) {
+    for (int i = v_l2_levels; i > 0; i--) {
         void **p = qatomic_rcu_read(lp);
 
         if (p == NULL) {

tcg/tcg.c

@@ -2549,21 +2549,21 @@ static void tcg_dump_ops(TCGContext *s, FILE *f, bool have_prefs)
                 {
                     const char *s_al, *s_op, *s_at;
                     MemOpIdx oi = op->args[k++];
-                    MemOp op = get_memop(oi);
+                    MemOp mop = get_memop(oi);
                     unsigned ix = get_mmuidx(oi);
 
-                    s_al = alignment_name[(op & MO_AMASK) >> MO_ASHIFT];
-                    s_op = ldst_name[op & (MO_BSWAP | MO_SSIZE)];
-                    s_at = atom_name[(op & MO_ATOM_MASK) >> MO_ATOM_SHIFT];
-                    op &= ~(MO_AMASK | MO_BSWAP | MO_SSIZE | MO_ATOM_MASK);
+                    s_al = alignment_name[(mop & MO_AMASK) >> MO_ASHIFT];
+                    s_op = ldst_name[mop & (MO_BSWAP | MO_SSIZE)];
+                    s_at = atom_name[(mop & MO_ATOM_MASK) >> MO_ATOM_SHIFT];
+                    mop &= ~(MO_AMASK | MO_BSWAP | MO_SSIZE | MO_ATOM_MASK);
 
                     /* If all fields are accounted for, print symbolically. */
-                    if (!op && s_al && s_op && s_at) {
+                    if (!mop && s_al && s_op && s_at) {
                         col += ne_fprintf(f, ",%s%s%s,%u",
                                           s_at, s_al, s_op, ix);
                     } else {
-                        op = get_memop(oi);
-                        col += ne_fprintf(f, ",$0x%x,%u", op, ix);
+                        mop = get_memop(oi);
+                        col += ne_fprintf(f, ",$0x%x,%u", mop, ix);
                     }
                     i = 1;
                 }