gcc/testsuite/gcc.target/aarch64/subs2.c

   1 /* { dg-do run } */
   2 /* { dg-options "-O2 --save-temps -fno-inline" } */
   3
   4 extern void abort (void);
   5
   6 int
   7 subs_si_test1 (int a, int b, int c)
   8 {
   9   int d = a - b;
  10
  11   /* { dg-final { scan-assembler-not "subs\tw\[0-9\]+, w\[0-9\]+, w\[0-9\]+" } } */
  12   /* { dg-final { scan-assembler "sub\tw\[0-9\]+, w\[0-9\]+, w\[0-9\]+" } } */
  13   if (d <= 0)
  14     return a + c;
  15   else
  16     return b + d + c;
  17 }
  18
  19 int
  20 subs_si_test2 (int a, int b, int c)
  21 {
  22   int d = a - 0xfff;
  23
  24   /* { dg-final { scan-assembler-not "subs\tw\[0-9\]+, w\[0-9\]+, #4095" } } */
  25   /* { dg-final { scan-assembler "sub\tw\[0-9\]+, w\[0-9\]+, #4095" } } */
  26   if (d <= 0)
  27     return a + c;
  28   else
  29     return b + d + c;
  30 }
  31
  32 int
  33 subs_si_test3 (int a, int b, int c)
  34 {
  35   int d = a - (b << 3);
  36
  37   /* { dg-final { scan-assembler-not "subs\tw\[0-9\]+, w\[0-9\]+, w\[0-9\]+, lsl 3" } } */
  38   /* { dg-final { scan-assembler "sub\tw\[0-9\]+, w\[0-9\]+, w\[0-9\]+, lsl 3" } } */
  39   if (d <= 0)
  40     return a + c;
  41   else
  42     return b + d + c;
  43 }
  44
  45 typedef long long s64;
  46
  47 s64
  48 subs_di_test1 (s64 a, s64 b, s64 c)
  49 {
  50   s64 d = a - b;
  51
  52   /* { dg-final { scan-assembler-not "subs\tx\[0-9\]+, x\[0-9\]+, x\[0-9\]+" } } */
  53   /* { dg-final { scan-assembler "sub\tx\[0-9\]+, x\[0-9\]+, x\[0-9\]+" } } */
  54   if (d <= 0)
  55     return a + c;
  56   else
  57     return b + d + c;
  58 }
  59
  60 s64
  61 subs_di_test2 (s64 a, s64 b, s64 c)
  62 {
  63   s64 d = a - 0x1000ll;
  64
  65   /* { dg-final { scan-assembler-not "subs\tx\[0-9\]+, x\[0-9\]+, #4096" } } */
  66   /* { dg-final { scan-assembler "sub\tx\[0-9\]+, x\[0-9\]+, #4096" } } */
  67   if (d <= 0)
  68     return a + c;
  69   else
  70     return b + d + c;
  71 }
  72
  73 s64
  74 subs_di_test3 (s64 a, s64 b, s64 c)
  75 {
  76   s64 d = a - (b << 3);
  77
  78   /* { dg-final { scan-assembler-not "subs\tx\[0-9\]+, x\[0-9\]+, x\[0-9\]+, lsl 3" } } */
  79   /* { dg-final { scan-assembler "sub\tx\[0-9\]+, x\[0-9\]+, x\[0-9\]+, lsl 3" } } */
  80   if (d <= 0)
  81     return a + c;
  82   else
  83     return b + d + c;
  84 }
  85
  86 int main ()
  87 {
  88   int x;
  89   s64 y;
  90
  91   x = subs_si_test1 (29, 4, 5);
  92   if (x != 34)
  93     abort ();
  94
  95   x = subs_si_test1 (5, 2, 20);
  96   if (x != 25)
  97     abort ();
  98
  99   x = subs_si_test2 (29, 4, 5);
 100   if (x != 34)
 101     abort ();
 102
 103   x = subs_si_test2 (1024, 2, 20);
 104   if (x != 1044)
 105     abort ();
 106
 107   x = subs_si_test3 (35, 4, 5);
 108   if (x != 12)
 109     abort ();
 110
 111   x = subs_si_test3 (5, 2, 20);
 112   if (x != 25)
 113     abort ();
 114
 115   y = subs_di_test1 (0x130000029ll,
 116                      0x320000004ll,
 117                      0x505050505ll);
 118
 119   if (y != 0x63505052e)
 120     abort ();
 121
 122   y = subs_di_test1 (0x5000500050005ll,
 123                      0x2111211121112ll,
 124                      0x0000000002020ll);
 125   if (y != 0x5000500052025)
 126     abort ();
 127
 128   y = subs_di_test2 (0x130000029ll,
 129                      0x320000004ll,
 130                      0x505050505ll);
 131   if (y != 0x95504f532)
 132     abort ();
 133
 134   y = subs_di_test2 (0x540004100ll,
 135                      0x320000004ll,
 136                      0x805050205ll);
 137   if (y != 0x1065053309)
 138     abort ();
 139
 140   y = subs_di_test3 (0x130000029ll,
 141                      0x064000008ll,
 142                      0x505050505ll);
 143   if (y != 0x63505052e)
 144     abort ();
 145
 146   y = subs_di_test3 (0x130002900ll,
 147                      0x088000008ll,
 148                      0x505050505ll);
 149   if (y != 0x635052e05)
 150     abort ();
 151
 152   return 0;
 153 }
 154