[PATCH][ARM] Fix signed-unsigned comparison warning

[Kyrylo Tkachov]

Hi all

This patch fixes a warning in arm.c about a comparison between signed and
unsigned integers.
This is usually harmless, but during bootstrap we compile with -Werror and
this turns
into an error. The fix is a one-liner.

Tested to make sure warning goes away and did a regtest run for
arm-none-eabi.

Ok for trunk?

Thanks,
Kyrill

2013-04-05  Kyrylo Tkachov  <kyrylo.tkac...@arm.com>

        * config/arm/arm.c (arm_expand_builtin): Change fcode
        type to unsigned int.
diff --git a/gcc/config/arm/arm.c b/gcc/config/arm/arm.c
index 231a27f..1558fb0 100644
--- a/gcc/config/arm/arm.c
+++ b/gcc/config/arm/arm.c
@@ -21489,7 +21489,7 @@ arm_expand_builtin (tree exp,
   rtx               op1;
   rtx               op2;
   rtx               pat;
-  int               fcode = DECL_FUNCTION_CODE (fndecl);
+  unsigned int      fcode = DECL_FUNCTION_CODE (fndecl);
   size_t            i;
   enum machine_mode tmode;
   enum machine_mode mode0;