gcc/testsuite/gcc.target/powerpc/pr62147.c

   1 /* { dg-do compile { target { powerpc*-*-* } } } */
   2 /* { dg-options "-O2 -fno-tree-loop-distribute-patterns" } */
   3
   4 /* Note that it's required to disable loop-distribute-patterns, otherwise the
   5    loop will be optimized to memset.  */
   6
   7 /* Expect loop_iv can know the loop is finite so the doloop_optimize
   8    can perform the doloop transformation.  */
   9
  10 typedef struct {
  11   int l;
  12   int b[258];
  13 } S;
  14
  15 void clear (S* s )
  16 {
  17   int i;
  18   int len = s->l + 1;
  19
  20   for (i = 0; i <= len; i++)
  21     s->b[i] = 0;
  22 }
  23
  24 /* { dg-final { scan-assembler {\mbdnz\M} } } */