[gcc r13-4412] switch conversion: remove dead variable

[Martin Liska <marxin@gcc.gnu.org>]

https://gcc.gnu.org/g:d0a3d55ae4a2656f7c306c9345ba14853b4075d5

commit r13-4412-gd0a3d55ae4a2656f7c306c9345ba14853b4075d5
Author: Martin Liska <mliska@suse.cz>
Date:   Wed Nov 30 15:01:06 2022 +0100

    switch conversion: remove dead variable
    
    gcc/ChangeLog:
    
            * tree-switch-conversion.cc (bit_test_cluster::emit): Remove
            dead variable bt_range.

Diff:
---
 gcc/tree-switch-conversion.cc | 2 --
 1 file changed, 2 deletions(-)

diff --git a/gcc/tree-switch-conversion.cc b/gcc/tree-switch-conversion.cc
index 83ba1c1ca03..1d75d7c7fc7 100644
--- a/gcc/tree-switch-conversion.cc
+++ b/gcc/tree-switch-conversion.cc
@@ -1518,7 +1518,6 @@ bit_test_cluster::emit (tree index_expr, tree index_type,
 
   tree minval = get_low ();
   tree maxval = get_high ();
-  unsigned HOST_WIDE_INT bt_range = get_range (minval, maxval);
 
   /* Go through all case labels, and collect the case labels, profile
      counts, and other information we need to build the branch tests.  */
@@ -1676,7 +1675,6 @@ bit_test_cluster::emit (tree index_expr, tree index_type,
     {
       profile_probability prob = test[k].prob / (subtree_prob + default_prob);
       subtree_prob -= test[k].prob;
-      bt_range -= test[k].bits;
       tmp = wide_int_to_tree (word_type_node, test[k].mask);
       tmp = fold_build2_loc (loc, BIT_AND_EXPR, word_type_node, csui, tmp);
       tmp = fold_build2_loc (loc, NE_EXPR, boolean_type_node,