Probably, but it could also be

sub routine{
   my $x = 123;
   print $x;  ## 123
   if( 1 ) {
        my $x = $x; ## Snippet here
        $x /= 2;
        print $x; ## 61.5
        do {
            my $x = $x; ## Or here
            $x *= 10; 
            print $x; ## 615
        };
        print $x;  ## 61.5
   }
   print $x;  ## 123
}
[download]

That's true - I was going from the assumption that the assignment in OP was the only relevant code :-)
"What should it profit a man, if he should win a flame war, yet lose his cool?"