gcc/testsuite/gcc.target/aarch64/cmn-neg2.c

   1 /* { dg-do run } */
   2 /* { dg-options "-O2 --save-temps" } */
   3
   4 extern void abort (void);
   5
   6 /* It's unsafe to use CMN in these comparisons.  */
   7
   8 void __attribute__ ((noinline))
   9 foo_s32 (int a, int b)
  10 {
  11   if (a < -b)
  12     abort ();
  13 }
  14
  15 void __attribute__ ((noinline))
  16 foo_s64 (unsigned long long a, unsigned long long b)
  17 {
  18   if (a > -b)
  19     abort ();
  20 }
  21
  22
  23 int
  24 main (void)
  25 {
  26   int a = 30;
  27   int b = 42;
  28   foo_s32 (a, b);
  29   foo_s64 (a, b);
  30   return 0;
  31 }
  32 /* { dg-final { scan-assembler-not "cmn\t" } } */
  33
  34 /* { dg-final { cleanup-saved-temps } } */