gen-pass-instances.awk: Rename prefix_len var to len_of_prefix in handle_line

2015-11-13  Tom de Vries  <tom@codesourcery.com>

	* gen-pass-instances.awk (handle_line): Rename prefix_len var to
	len_of_prefix.

From-SVN: r230320

gcc/ChangeLog

 2015-11-13  Tom de Vries  <tom@codesourcery.com>
 
+	* gen-pass-instances.awk (handle_line): Rename prefix_len var to
+	len_of_prefix.
+
+2015-11-13  Tom de Vries  <tom@codesourcery.com>
+
 	* gen-pass-instances.awk (handle_line): Add args_str variable.
 
 2015-11-13  Martin Liska  <mliska@suse.cz>

gcc/gen-pass-instances.awk

@@ -66,8 +66,8 @@ function handle_line()
 	pass_name = args_str;
 
 	# Find call expression prefix (until and including called function)
-	prefix_len = args_start_at - 1 - len_of_open;
-	prefix = substr(line, 1, prefix_len);
+	len_of_prefix = args_start_at - 1 - len_of_open;
+	prefix = substr(line, 1, len_of_prefix);
 
 	# Find call expression postfix
 	postfix_starts_at = call_starts_at + len_of_call;