gcc/testsuite/gcc.dg/lto/20110201-1_0.c

   1 /* { dg-lto-do run } */
   2 /* { dg-lto-options { { -O0 -flto -fno-math-errno } } } */
   3 /* { dg-lto-options { "-O0 -flto -fno-math-errno -mfpu=neon-vfpv4" } { target arm*-*-* } } */
   4 /* { dg-require-effective-target arm_neon_ok_no_float_abi { target arm*-*-* } } */
   5 /* { dg-require-linker-plugin "" } */
   6 /* { dg-require-effective-target sqrt_insn } */
   7
   8 /* We require a linker plugin because otherwise we'd need to link
   9    against libm which we are not sure here has cabs on all targets.
  10    This is because collect2 invokes ld on the -O0 object code
  11    which does not have folded cabs.  */
  12
  13 double cabs(_Complex double);
  14 double __attribute__((used)) __attribute__ ((optimize ("O2,fast-math")))
  15 foo (_Complex double x, int b)
  16 {
  17   if (b)
  18     x = 0;
  19   return cabs(x);
  20 }
  21
  22 int main() { return 0; }