view gcc/testsuite/gcc.dg/tree-ssa/ssa-dse-16.c @ 131:84e7813d76e9

gcc-8.2
author mir3636
date Thu, 25 Oct 2018 07:37:49 +0900
parents 04ced10e8804
children
line wrap: on
line source

/* { dg-do compile } */
/* { dg-options "-O2 -fdump-tree-dse1-details" } */

struct X { struct A { int a[2]; } b[10]; };
void foo (struct X *x, int i)
{
  struct A a;
 /* Confuse SRA here with using a variable index, otherwise it will mess
    with the IL too much.  */
  a.a[i] = 3;
  a.a[1] = 0;
  /* The following store is dead.  */
  x->b[i].a[0] = 1;
  x->b[i] = a;
}

/* { dg-final { scan-tree-dump "Deleted dead store" "dse1" } } */