> > commit 8824b5ecba26cef065e47b34609c72677c3c36fc > Author: Aldy Hernandez <al...@redhat.com> > Date: Wed May 20 16:31:14 2015 -0400 > > Set DECL_IGNORED_P on temporary arrays created in the switch > conversion pass. > > diff --git a/gcc/tree-switch-conversion.c b/gcc/tree-switch-conversion.c > index 6b68a16..a4bcdba 100644 > --- a/gcc/tree-switch-conversion.c > +++ b/gcc/tree-switch-conversion.c > @@ -1097,6 +1097,7 @@ build_one_array (gswitch *swtch, int num, tree > arr_index_type, > DECL_ARTIFICIAL (decl) = 1; > TREE_CONSTANT (decl) = 1; > TREE_READONLY (decl) = 1; > + DECL_IGNORED_P (decl) = 1; > varpool_node::finalize_decl (decl);
This looks obvious enough to me. Technically speaking the array type constructed probalby should be TREE_ARTIFICAIL, but probably it does not matter. If you grep for finalize_decl, there are several other calls: asan.c: varpool_node::finalize_decl (var); asan.c: varpool_node::finalize_decl (var); cgraphbuild.c: varpool_node::finalize_decl (decl); cgraphunit.c: - varpool_finalize_decl cgraphunit.c: varpool_node::finalize_decl (decl); cgraphunit.c:varpool_node::finalize_decl (tree decl) coverage.c: varpool_node::finalize_decl (var); coverage.c: varpool_node::finalize_decl (var); coverage.c: varpool_node::finalize_decl (fn_info_ary); coverage.c: varpool_node::finalize_decl (gcov_info_var); omp-low.c: varpool_node::finalize_decl (t); omp-low.c: varpool_node::finalize_decl (t); omp-low.c: varpool_node::finalize_decl (decl); omp-low.c: varpool_node::finalize_decl (vars_decl); omp-low.c: varpool_node::finalize_decl (funcs_decl); passes.c: varpool_node::finalize_decl (decl); tree-chkp.c: varpool_node::finalize_decl (var); tree-chkp.c: varpool_node::finalize_decl (bnd_var); tree-profile.c: varpool_node::finalize_decl (ic_void_ptr_var); tree-profile.c: varpool_node::finalize_decl (ic_gcov_type_ptr_var); tree-switch-conversion.c: varpool_node::finalize_decl (decl); ubsan.c: varpool_node::finalize_decl (decl); ubsan.c: varpool_node::finalize_decl (var); ubsan.c: varpool_node::finalize_decl (array); varasm.c: varpool_node::finalize_decl (decl); varpool.c: Unlike finalize_decl function is intended to be used varpool.c: varpool_node::finalize_decl (decl); I would say most of them needs similar treatment (I am not 100% sure about OMP ones that may be user visible) Honza > > fetch = build4 (ARRAY_REF, value_type, decl, tidx, NULL_TREE,
