gcc/testsuite/gcc.target/arm/pr43920-2.c

   1 /* { dg-do assemble } */
   2 /* { dg-options "-mthumb -Os -save-temps" }  */
   3 /* { dg-require-effective-target arm_thumb2_ok } */
   4
   5 #include <stdio.h>
   6
   7 extern int lseek(int, long, int);
   8
   9 int getFileStartAndLength (int fd, int *start_, size_t *length_)
  10 {
  11       int start, end;
  12       size_t length;
  13
  14       start = lseek (fd, 0L, SEEK_CUR);
  15       end = lseek (fd, 0L, SEEK_END);
  16
  17       if (start == -1 || end == -1)
  18          return -1;
  19
  20       length = end - start;
  21       if (length == 0)
  22          return -1;
  23
  24       *start_ = start;
  25       *length_ = length;
  26
  27       return 0;
  28 }
  29
  30 /* { dg-final { scan-assembler-times "pop" 2 } } */
  31 /* { dg-final { scan-assembler-times "beq" 3 } } */
  32 /* { dg-final { object-size text <= 54 } } */