[Bug tree-optimization/67955] tree-dse does not use pointer info

["vries at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67955

--- Comment #7 from vries at gcc dot gnu.org ---
(In reply to Richard Biener from comment #3)
> Care to adjust stmt_kills_ref_p accordingly and instrument it
> to see how many times during bootstrap this triggers?

I've done a bootstrap and reg-test with a printf for each trigger.

No hits in bootstrap. For reg-test:

+./gcc/testsuite/gcc/gcc.sum:FAIL: gcc.dg/ipa/ipa-pta-16.c (test for excess
errors)
+./gcc/testsuite/gcc/gcc.sum:FAIL: gcc.dg/ipa/ipa-pta-4.c (test for excess
errors)
+./gcc/testsuite/gcc/gcc.sum:FAIL: gcc.dg/ipa/ipa-pta-8.c (test for excess
errors)
+./gcc/testsuite/gcc/gcc.sum:FAIL: gcc.dg/torture/pr45967-3.c   -O2  (test for
excess errors)
+./gcc/testsuite/gcc/gcc.sum:FAIL: gcc.dg/torture/pr45967-3.c   -O2 -flto 
(test for excess errors)
+./gcc/testsuite/gcc/gcc.sum:FAIL: gcc.dg/torture/pr45967-3.c   -O2 -flto
-flto-partition=none  (test for excess errors)
+./gcc/testsuite/gcc/gcc.sum:FAIL: gcc.dg/torture/pr45967-3.c   -O3
-fomit-frame-pointer -funroll-loops -fpeel-loops -ftracer -finline-functions 
(test for excess errors)
+./gcc/testsuite/gcc/gcc.sum:FAIL: gcc.dg/torture/pr45967-3.c   -O3 -g  (test
for excess errors)
+./gcc/testsuite/gcc/gcc.sum:FAIL: gcc.dg/tree-ssa/alias-33.c (test for excess
errors)
+./gcc/testsuite/g++/g++.sum:FAIL: g++.dg/opt/thunk3.C  -std=gnu++11 (test for
excess errors)
+./gcc/testsuite/g++/g++.sum:FAIL: g++.dg/opt/thunk3.C  -std=gnu++14 (test for
excess errors)
+./gcc/testsuite/g++/g++.sum:FAIL: g++.dg/opt/thunk3.C  -std=gnu++98 (test for
excess errors)