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 "csneg\t" } } */
  11   return llabs (a);
  12 }
  13
  14 long long
  15 abs64_in_dreg (long long a)
  16 {
  17   /* { dg-final { scan-assembler "csneg\t" } } */
  18   register long long x asm ("d8") = a;
  19   register long long y asm ("d9");
  20   asm volatile ("" : : "w" (x));
  21   y = llabs (x);
  22   asm volatile ("" : : "w" (y));
  23   return y;
  24 }
  25
  26 int
  27 main (void)
  28 {
  29   volatile long long ll0 = 0LL, ll1 = 1LL, llm1 = -1LL;
  30
  31   if (abs64 (ll0) != 0LL)
  32     abort ();
  33
  34   if (abs64 (ll1) != 1LL)
  35     abort ();
  36
  37   if (abs64 (llm1) != 1LL)
  38     abort ();
  39
  40   if (abs64_in_dreg (ll0) != 0LL)
  41     abort ();
  42
  43   if (abs64_in_dreg (ll1) != 1LL)
  44     abort ();
  45
  46   if (abs64_in_dreg (llm1) != 1LL)
  47     abort ();
  48
  49   return 0;
  50 }
  51