Original patch posted as part of Nios II patches:
http://gcc.gnu.org/ml/gcc-patches/2013-04/msg01087.html
This patch is to allow hexadecimal numbers to be used in option
arguments, e.g. -falign-loops=0x10 can now be used as equivalent to
-falign-loops=16.
Joseph, the patch has been modified to use IXDIGIT to check the argument
string first, as you suggested in the last submission. Is this okay for
trunk?
Thanks,
Chung-Lin
2013-07-14 Chung-Lin Tang <clt...@codesourcery.com>
* opts-common.c (integral_argument): Add support for hexadecimal
command option integer arguments. Update comments.
Index: opts-common.c
===================================================================
--- opts-common.c (revision 200946)
+++ opts-common.c (working copy)
@@ -147,7 +147,7 @@ find_opt (const char *input, unsigned int lang_mas
return match_wrong_lang;
}
-/* If ARG is a non-negative integer made up solely of digits, return its
+/* If ARG is a non-negative decimal or hexadecimal integer, return its
value, otherwise return -1. */
int
@@ -161,6 +161,17 @@ integral_argument (const char *arg)
if (*p == '\0')
return atoi (arg);
+ /* It wasn't a decimal number - try hexadecimal. */
+ if (arg[0] == '0' && (arg[1] == 'x' || arg[1] == 'X'))
+ {
+ p = arg + 2;
+ while (*p && ISXDIGIT (*p))
+ p++;
+
+ if (*p == '\0')
+ return strtol (arg, NULL, 16);
+ }
+
return -1;
}
