sim/testsuite/sim/bfin/cycles.s

   1 # Blackfin testcase for playing with CYCLES
   2 # mach: bfin
   3
   4         .include "testutils.inc"
   5
   6         start
   7
   8         R0 = 0;
   9         R1 = 1;
  10         CYCLES = R0;
  11         CYCLES2 = R1;
  12
  13         /* CYCLES should be "small" while CYCLES2 should be R1 still */
  14         R2 = CYCLES;
  15         CC = R2 <= 3;
  16         if ! CC jump 1f;
  17
  18         R3 = CYCLES2;
  19         CC = R3 == 1;
  20         if ! CC jump 1f;
  21
  22         nop;
  23         mnop;
  24         nop;
  25         mnop;
  26
  27         /* Test the "shadowed" CYCLES2 -- only a read of CYCLES reloads it */
  28         imm32 R1, 0x12345678
  29         CYCLES2 = R1;
  30         R2 = CYCLES2;
  31         CC = R2 == R3;
  32         if ! CC jump 1f;
  33
  34         R2 = CYCLES;
  35         R2 = CYCLES2;
  36         CC = R2 == R1;
  37         if ! CC jump 1f;
  38
  39         pass
  40 1:
  41         fail