[PATCH] Fix PR35972, full redundancy eliminations with PRE and the alias oracle

[Paolo Bonzini]

> +       switch (op->opcode)
> + 	{
> 
>   ...
> 
> + 	case ARRAY_RANGE_REF:
> + 	case ARRAY_REF:
> + 	  *op0_p = build4 (ARRAY_REF, op->type, NULL_TREE,
> + 			   op->op0, op->op1, op->op2);
> + 	  op0_p = &TREE_OPERAND (*op0_p, 0);
> + 	  break;

Maybe build4 (op->opcode)?  (Did you test Ada)?

Paolo