gcc/testsuite/gcc.target/aarch64/abs_1.c

   1 /* { dg-do run } */
   2 /* { dg-options "-O2 -fno-inline --save-temps" } */
   3
   4 extern long long llabs (long long);
   5 extern void abort (void);
   6
   7 long long
   8 abs64 (long long a)
   9 {
  10   /* { dg-final { scan-assembler "eor\t" } } */
  11   /* { dg-final { scan-assembler "sub\t" } } */
  12   return llabs (a);
  13 }
  14
  15 long long
  16 abs64_in_dreg (long long a)
  17 {
  18   /* { dg-final { scan-assembler "abs\td\[0-9\]+, d\[0-9\]+" } } */
  19   register long long x asm ("d8") = a;
  20   register long long y asm ("d9");
  21   asm volatile ("" : : "w" (x));
  22   y = llabs (x);
  23   asm volatile ("" : : "w" (y));
  24   return y;
  25 }
  26
  27 int
  28 main (void)
  29 {
  30   volatile long long ll0 = 0LL, ll1 = 1LL, llm1 = -1LL;
  31
  32   if (abs64 (ll0) != 0LL)
  33     abort ();
  34
  35   if (abs64 (ll1) != 1LL)
  36     abort ();
  37
  38   if (abs64 (llm1) != 1LL)
  39     abort ();
  40
  41   if (abs64_in_dreg (ll0) != 0LL)
  42     abort ();
  43
  44   if (abs64_in_dreg (ll1) != 1LL)
  45     abort ();
  46
  47   if (abs64_in_dreg (llm1) != 1LL)
  48     abort ();
  49
  50   return 0;
  51 }
  52
  53 /* { dg-final { cleanup-saved-temps } } */