gcc/testsuite/gcc.target/i386/pr64114.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-O -mstringop-strategy=vector_loop -mno-push-args" } */
   3
   4 extern float *ptrs[];
   5 extern int incs[];
   6
   7 struct big
   8 {
   9   int i[0x10000];
  10 };
  11
  12 extern void bar (struct big b);
  13
  14 struct big
  15 foo (int n)
  16 {
  17   struct big b;
  18
  19   int inc14 = incs[15], inc16 = n, inc17 = n, inc19 = incs[3];
  20   float *ptr0 = ptrs[1], *ptr14 = ptrs[14], *ptr16 = ptrs[16];
  21   while (n--)
  22     *ptr0 += *ptr14 += inc14 += *ptr16 += inc16 += inc17 += inc19, bar (b);
  23   return b;
  24 }