* doc/options.texi (ToLower): Document.

	* opt-functions.awk (switch_bit_fields): Initialize cl_tolower
	field.
	* opts-common.c (decode_cmdline_option): Handle cl_tolower.
	* opts.h (cl_option): Add cl_tolower field.
	* config/rx/rx.c (rx_handle_option): Use strcmp of -mcpu=
	arguments with lowercase strings.
	* config/rx/rx.opt (mcpu=): Add ToLower.
	* config/rx/t-rx (MULTILIB_MATCHES): Don't handle uppercase -mcpu=
	argument.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@171932 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 13 insertions, 0 deletions

diff --git a/gcc/opts-common.c b/gcc/opts-common.c
index f54d64aff28..e314cb35213 100644
--- a/gcc/opts-common.c
+++ b/gcc/opts-common.c
@@ -567,6 +567,19 @@ decode_cmdline_option (const char **argv, unsigned int lang_mask,
   if (!option_ok_for_language (option, lang_mask))
     errors |= CL_ERR_WRONG_LANG;
 
+  /* Convert the argument to lowercase if appropriate.  */
+  if (arg && option->cl_tolower)
+    {
+      size_t j;
+      size_t len = strlen (arg);
+      char *arg_lower = XNEWVEC (char, len + 1);
+
+      for (j = 0; j < len; j++)
+	arg_lower[j] = TOLOWER ((unsigned char) arg[j]);
+      arg_lower[len] = 0;
+      arg = arg_lower;
+    }
+
   /* If the switch takes an integer, convert it.  */
   if (arg && option->cl_uinteger)
     {