https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88714
Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-01-10
Ever confirmed|0 |1
--- Comment #7 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
As for the rest, seems that when tree-ssa-sccvn.c is compiled by the
stage1-gcc/ with -g -O2 -fno-checking -gtoggle options (among others), it emits
something, while when compiled with stage2-gcc/ it emits something different.
Copying tree-ssa-sccvn.o from stage1-gcc/ (prev-gcc) into stage2-gcc/ (gcc) and
rebuilding cc1 makes it generate the same assembly and same -fdump-tree-pre-all
dump for sort.i as stage1-gcc/ generates, otherwise there are differences like:
-exp_gen[6] := { countp_30 (0022), {mem_ref<0B>,countp_30}@.MEM_25 (0007),
{mem_ref<4294967292B>,countp_30}@.MEM_80 (0008), {plus_expr,_10,_11} (0009),
{pointer_plus_expr,countp_30,4} (0033) }
+exp_gen[6] := { countp_30 (0022), {mem_ref<0B>,countp_30}@.MEM_25 (0007), _11
(0008), {plus_expr,_10,_11} (0009), {pointer_plus_expr,countp_30,4} (0033) }
and various others later on.
