On Mon, Apr 6, 2015 at 7:29 PM, Steve Ellcey <sell...@imgtec.com> wrote: > I have a simple gimple question. I am trying to introduce an array > into a gimple stream and create a pointer to that array. > > I can create the array with: > > array_type = build_array_type_nelts (char_type_node, 256); > array_var = create_tmp_var (array_type, "spill"); > > I can create a pointer to an array with: > > ptr_type = build_pointer_type (array_type); > ptr_var = create_tmp_var (ptr_type, "spill"); > > But if I try to create an assignment to get the pointer to point to > the array I get a verify_gimple error. > > I have tried: > > stmt = gimple_build_assign (ptr_var, array_var); > and > stmt = gimple_build_assign (ptr_var, ADDR_EXPR, array_var); > > but neither of those work. I also tried making the pointer be a > pointer to char instead of a pointer to array of char but that didn't > seem to work either. Can someone help me with the magic formula to > generate gimple code that causes ptr_var to point to array_var? > Is ADDR_EXPR the right way to get the address of the array instead of > the value in a gimple_build_assign call?
ADDR_EXPR is one of the "single-rhs" tree codes so you need to build a GENERIC expression here: stmt = gimple_build_assing (ptr_var, build_fold_addr_expr (array_var)); Richard. > > Steve Ellcey > sell...@imgtec.com
