gcc/testsuite/gcc.target/arm/fuse-caller-save.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-O2 -fipa-ra" } */
   3 /* Testing -fipa-ra optimization option.  */
   4
   5 static int __attribute__((noinline))
   6 bar (int x)
   7 {
   8   return x + 3;
   9 }
  10
  11 int __attribute__((noinline))
  12 foo (int y)
  13 {
  14   return y + bar (y);
  15 }
  16
  17 int
  18 main (void)
  19 {
  20   return !(foo (5) == 13);
  21 }
  22
  23 /* For thumb1, r3 is considered likely spilled, and treated differently in
  24    ira_build_conflicts, which inhibits the fipa-ra optimization.  */
  25 /* { dg-final { scan-assembler-times "mov\tr3, r0" 1 { target { ! arm_thumb1 } } } } */