https://gcc.gnu.org/bugzilla/show_bug.cgi?id=118320
--- Comment #9 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Some debug info:
(gdb) up
#1 0x00000000023bcdb0 in
rtl_ssa::restrict_movement_for_uses<rtl_ssa::ignore_changing_insns>
(move_range=..., uses=..., ignore=...) at ../../gcc/rtl-ssa/movement.h:285
285 for (const use_info *use : uses)
(gdb) l
280 template<typename IgnorePredicates>
281 bool
282 restrict_movement_for_uses (insn_range_info &move_range, use_array
uses,
283 IgnorePredicates ignore)
284 {
285 for (const use_info *use : uses)
286 {
287 // Ignore uses of undefined values.
288 set_info *set = use->def ();
289 if (!set)
(gdb) p uses
$1 = {<array_slice<rtl_ssa::access_info* const>> = {m_base = 0x0, m_size =
4294967295}, <No data fields>}
(gdb) p uses.m_size
$2 = 4294967295
(gdb) p/x uses.m_size
$3 = 0xffffffff
What I don't understand is why is m_size is -1 when m_base is nullptr.
Shouldn't it be 0? or I am missing something obvious?
