include/linux/compiler-gcc2.h

   1 /* Never include this file directly.  Include <linux/compiler.h> instead.  */
   2
   3 /* These definitions are for GCC v2.x.  */
   4
   5 /* Somewhere in the middle of the GCC 2.96 development cycle, we implemented
   6    a mechanism by which the user can annotate likely branch directions and
   7    expect the blocks to be reordered appropriately.  Define __builtin_expect
   8    to nothing for earlier compilers.  */
   9 #include <linux/compiler-gcc.h>
  10
  11 #if __GNUC_MINOR__ < 96
  12 # define __builtin_expect(x, expected_value) (x)
  13 #endif
  14
  15 #define __attribute_used__      __attribute__((__unused__))
  16
  17 /*
  18  * The attribute `pure' is not implemented in GCC versions earlier
  19  * than 2.96.
  20  */
  21 #if __GNUC_MINOR__ >= 96
  22 # define __attribute_pure__     __attribute__((pure))
  23 # define __attribute_const__    __attribute__((__const__))
  24 #endif