gcc/testsuite/gcc.target/nios2/const-addr-3.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-march=r2 -mno-cdx -mno-bmx -O2" } */
   3 /* { dg-final { scan-assembler-times "stwio\tr., 0\\(r" 2 } } */
   4 /* { dg-final { scan-assembler-times "stwio\tr., 528\\(r0\\)" 1 } } */
   5
   6 /* These functions should not spill to stack.  */
   7 /* { dg-final { scan-assembler-not "addi\tsp, sp" } } */
   8
   9 /* On R2, stwio takes only a 12-bit displacement so foo1 and foo2 need
  10    to use register indirect addressing.  */
  11
  12 #define addr1 ((volatile int *) 0x43210)
  13 #define addr2 ((volatile int *) 0x3210)
  14 #define addr3 ((volatile int *) 0x210)
  15
  16 #define SET(l,r) __builtin_stwio ((l), (r))
  17
  18 void foo1 (int x) { SET (addr1, x); }
  19 void foo2 (int x) { SET (addr2, x); }
  20 void foo3 (int x) { SET (addr3, x); }