Define STDINT_LONG32 and add predefined integer types for IAMCU

Define STDINT_LONG32 to 0, add SIZE_TYPE, PTRDIFF_TYPE and WCHAR_TYPE
for IAMCU to make integer types compatible with i386 Linux.

	PR target/68456
	PR target/69226
	* config/i386/iamcu.h (SIZE_TYPE): New macro.
	(PTRDIFF_TYPE): Likewise.
	(WCHAR_TYPE): Likewise.
	(WCHAR_TYPE_SIZE): Likewise.
	(STDINT_LONG32): Likewise.

From-SVN: r232266

gcc/ChangeLog

+2016-01-12  H.J. Lu  <hongjiu.lu@intel.com>
+
+	PR target/68456
+	PR target/69226
+	* config/i386/iamcu.h (SIZE_TYPE): New macro.
+	(PTRDIFF_TYPE): Likewise.
+	(WCHAR_TYPE): Likewise.
+	(WCHAR_TYPE_SIZE): Likewise.
+	(STDINT_LONG32): Likewise.
+
 2016-01-12  Richard Biener  <rguenther@suse.de>
 
 	PR tree-optimization/69053

gcc/config/i386/iamcu.h

@@ -94,3 +94,19 @@ see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
         goto DONE;							\
       }									\
   } while (0)
+
+#undef SIZE_TYPE
+#define SIZE_TYPE "unsigned int"
+
+#undef PTRDIFF_TYPE
+#define PTRDIFF_TYPE "int"
+
+#undef WCHAR_TYPE
+#define WCHAR_TYPE "long int"
+
+#undef WCHAR_TYPE_SIZE
+#define WCHAR_TYPE_SIZE BITS_PER_WORD
+
+/* Use int, instead of long int, for int32_t and uint32_t.  */
+#undef STDINT_LONG32
+#define STDINT_LONG32 0