gcc/testsuite/gcc.target/i386/strinline.c

   1 /* { dg-do compile } */
   2 /* { dg-require-effective-target fpic } */
   3 /* { dg-options "-O2 -fPIC" } */
   4 typedef unsigned int size_t;
   5  char *
   6 __mempcpy_by2 (char *__dest, __const char *__src, size_t __srclen)
   7 {
   8   register char *__tmp = __dest;
   9   register unsigned long int __d0, __d1;
  10   __asm__ __volatile__
  11     ("shrl      $1,%3\n\t"
  12      "jz        2f\n"
  13      "1:\n\t"
  14      "movl      (%2),%0\n\t"
  15      "leal      4(%2),%2\n\t"
  16      "movl      %0,(%1)\n\t"
  17      "leal      4(%1),%1\n\t"
  18      "decl      %3\n\t"
  19      "jnz       1b\n"
  20      "2:\n\t"
  21      "movw      (%2),%w0\n\t"
  22      "movw      %w0,(%1)"
  23      : "=&q" (__d0), "=r" (__tmp), "=&r" (__src), "=&r" (__d1),
  24        "=m" ( *(struct { __extension__ char __x[__srclen]; } *)__dest)
  25      : "1" (__tmp), "2" (__src), "3" (__srclen / 2),
  26        "m" ( *(struct { __extension__ char __x[__srclen]; } *)__src)
  27      : "cc");
  28   return __tmp + 2;
  29 }