gcc/testsuite/gcc.target/aarch64/neg_1.c

   1 /* { dg-do run } */
   2 /* { dg-options "-O2 -fno-inline --save-temps" } */
   3
   4 extern void abort (void);
   5
   6 long long
   7 neg64 (long long a)
   8 {
   9   /* { dg-final { scan-assembler "neg\tx\[0-9\]+" } } */
  10   return 0 - a;
  11 }
  12
  13 long long
  14 neg64_in_dreg (long long a)
  15 {
  16   /* { dg-final { scan-assembler "neg\td\[0-9\]+, d\[0-9\]+" } } */
  17   register long long x asm ("d8") = a;
  18   register long long y asm ("d9");
  19   asm volatile ("" : : "w" (x));
  20   y = 0 - x;
  21   asm volatile ("" : : "w" (y));
  22   return y;
  23 }
  24
  25 int
  26 neg32 (int a)
  27 {
  28   /* { dg-final { scan-assembler "neg\tw\[0-9\]+" } } */
  29   return 0 - a;
  30 }
  31
  32 int
  33 neg32_in_sreg (int a)
  34 {
  35   /* { dg-final { scan-assembler "neg\tv\[0-9\]+\.2s, v\[0-9\]+\.2s" } } */
  36   register int x asm ("s8") = a;
  37   register int y asm ("s9");
  38   asm volatile ("" : : "w" (x));
  39   y = 0 - x;
  40   asm volatile ("" : : "w" (y));
  41   return y;
  42 }
  43
  44 int
  45 main (void)
  46 {
  47   long long a;
  48   int b;
  49   a = 61;
  50   b = 313;
  51
  52   if (neg64 (a) != -61)
  53     abort ();
  54
  55   if (neg64_in_dreg (a) != -61)
  56     abort ();
  57
  58   if (neg32 (b) != -313)
  59     abort ();
  60
  61   if (neg32_in_sreg (b) != -313)
  62     abort ();
  63
  64   return 0;
  65 }
  66