gcc/testsuite/gcc.dg/tree-ssa/pr101856.c

   1 /* PR tree-optimization/101856 */
   2 /* { dg-do compile } */
   3 /* { dg-options "-O2 -fdump-tree-optimized" } */
   4 /* { dg-final { scan-tree-dump " .MUL_OVERFLOW " "optimized" { target i?86-*-* x86_64-*-* aarch64*-*-* powerpc64le-*-* } } } */
   5
   6 int
   7 foo (unsigned long x, unsigned long y)
   8 {
   9   unsigned long z = x * y;
  10   return z / y != x;
  11 }