[Bug tree-optimization/79690] IVOPTs drops gs: prefix

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=79690

--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> ---
But an extra assert like the following triggers during bootstrap so we can't
really avoid the casting (in all cases).

Index: gcc/tree-ssa-address.c
===================================================================
--- gcc/tree-ssa-address.c      (revision 245681)
+++ gcc/tree-ssa-address.c      (working copy)
@@ -708,6 +702,9 @@ create_mem_ref (gimple_stmt_iterator *gs
   tree mem_ref, tmp;
   struct mem_address parts;

+  if (base_hint)
+    gcc_assert (POINTER_TYPE_P (TREE_TYPE (base_hint)));
+
   addr_to_parts (type, addr, iv_cand, base_hint, &parts, speed);
   gimplify_mem_ref_parts (gsi, &parts);
   mem_ref = create_mem_ref_raw (type, alias_ptr_type, &parts, true);

OTOH it looks harmless for a few cases I tried (the base_hint won't match
in the search for it).  Testing w/o that assert.