gcc/testsuite/gcc.dg/pr64935-2.c

   1 /* PR rtl-optimization/64935 */
   2 /* { dg-do compile } */
   3 /* { dg-options "-O -fschedule-insns --param=max-sched-ready-insns=1 -fcompare-debug" } */
   4 /* { dg-require-effective-target scheduling } */
   5 /* { dg-xfail-if "" { powerpc-ibm-aix* } } */
   6
   7 void
   8 foo (int *data, unsigned len, const int qlp_coeff[],
   9      unsigned order, int lp, int residual[], int i)
  10 {
  11   int sum;
  12   sum = 0;
  13   sum += qlp_coeff[1] * data[i - 2];
  14   sum += qlp_coeff[0] * data[i - 1];
  15   residual[i] = data[i] - (sum >> lp);
  16 }