gcc/testsuite/g++.dg/vect/pr50698.cc

   1 // { dg-do compile }
   2 // { dg-require-effective-target vect_float }
   3
   4 float mem[4096];
   5 const int N=1024;
   6
   7 struct XYZ {
   8     float * mem;
   9     int n;
  10     float * x() { return mem;}
  11     float * y() { return x()+n;}
  12     float * z() { return y()+n;}
  13 };
  14
  15 inline
  16 void sum(float * x, float * y, float * z, int n) {
  17     for (int i=0;i!=n; ++i)
  18       x[i]=y[i]+z[i];
  19 }
  20
  21 void sumS() {
  22     XYZ xyz; xyz.mem=mem; xyz.n=N;
  23     sum(xyz.x(),xyz.y(),xyz.z(),xyz.n);
  24 }
  25
  26 // { dg-final { scan-tree-dump-not "run-time aliasing" "vect" } }
  27 // { dg-final { cleanup-tree-dump "vect" } }