Regressions on releases/gcc-10 at commit r10-9419 vs commit r10-9392 on Linux/x86_64

[H.J. Lu]

New failures:
FAIL: gcc.dg/attr-flatten-1.c  (test for warnings, line 13)
FAIL: gcc.dg/attr-flatten-1.c  (test for warnings, line 13)
FAIL: gcc.dg/attr-flatten-1.c  (test for warnings, line 13)
FAIL: gcc.dg/tree-prof/cold_partition_label.c execution,    -g
FAIL: gcc.dg/tree-prof/cold_partition_label.c execution,    -g
FAIL: gcc.dg/tree-prof/crossmodule-indircall-1.c execution,    -g
FAIL: gcc.dg/tree-prof/indir-call-prof.c execution,    -g
FAIL: gcc.dg/tree-prof/pr45354.c execution,    -g
FAIL: gcc.dg/tree-prof/pr49299-2.c execution,    -g
FAIL: gcc.dg/tree-prof/pr66295.c execution,    -g
FAIL: gcc.dg/tree-prof/pr77698.c execution,    -g
FAIL: gcc.dg/tree-prof/pr79587.c execution,    -g
FAIL: gcc.dg/tree-prof/section-attr-1.c execution,    -g
FAIL: gcc.dg/tree-prof/tracer-1.c execution,    -g
FAIL: gcc.dg/tree-prof/update-cunroll-2.c execution,    -g
FAIL: gcc.dg/tree-prof/val-prof-10.c execution,    -g
FAIL: gcc.dg/tree-prof/val-prof-1.c execution,    -g
FAIL: libstdc++-prettyprinters/cxx11.cc print rarrptr
FAIL: libstdc++-prettyprinters/cxx11.cc print rempty_ptr
FAIL: libstdc++-prettyprinters/cxx11.cc print reums
FAIL: libstdc++-prettyprinters/cxx11.cc print ruom
FAIL: libstdc++-prettyprinters/cxx11.cc print ruomm
FAIL: libstdc++-prettyprinters/cxx11.cc print ruoms
FAIL: libstdc++-prettyprinters/cxx11.cc print ruos
FAIL: libstdc++-prettyprinters/cxx11.cc print ruptr
FAIL: libstdc++-prettyprinters/cxx17.cc print p
FAIL: libstdc++-prettyprinters/cxx17.cc print path0
FAIL: libstdc++-prettyprinters/cxx17.cc print path1
FAIL: libstdc++-prettyprinters/cxx17.cc print q
FAIL: libstdc++-prettyprinters/cxx17.cc print v0
FAIL: libstdc++-prettyprinters/cxx17.cc print v1
FAIL: libstdc++-prettyprinters/cxx17.cc print v2
FAIL: libstdc++-prettyprinters/cxx17.cc print v3
FAIL: libstdc++-prettyprinters/cxx17.cc print v4
FAIL: libstdc++-prettyprinters/cxx17.cc print wp
FAIL: libstdc++-prettyprinters/cxx17.cc print wq
FAIL: libstdc++-prettyprinters/libfundts.cc print a
FAIL: libstdc++-prettyprinters/libfundts.cc print a
FAIL: libstdc++-prettyprinters/libfundts.cc print ab
FAIL: libstdc++-prettyprinters/libfundts.cc print ab
FAIL: libstdc++-prettyprinters/libfundts.cc print ai
FAIL: libstdc++-prettyprinters/libfundts.cc print ai
FAIL: libstdc++-prettyprinters/libfundts.cc print ap
FAIL: libstdc++-prettyprinters/libfundts.cc print ap
FAIL: libstdc++-prettyprinters/libfundts.cc print as
FAIL: libstdc++-prettyprinters/libfundts.cc print as
FAIL: libstdc++-prettyprinters/libfundts.cc print as2
FAIL: libstdc++-prettyprinters/libfundts.cc print as2
FAIL: libstdc++-prettyprinters/libfundts.cc print om
FAIL: libstdc++-prettyprinters/libfundts.cc print om
FAIL: libstdc++-prettyprinters/libfundts.cc print op
FAIL: libstdc++-prettyprinters/libfundts.cc print op
FAIL: libstdc++-prettyprinters/libfundts.cc print os
FAIL: libstdc++-prettyprinters/libfundts.cc print os
FAIL: libstdc++-prettyprinters/simple.cc print const_intset
FAIL: libstdc++-prettyprinters/simple.cc print lst
FAIL: libstdc++-prettyprinters/simple.cc print lstciter
FAIL: libstdc++-prettyprinters/simple.cc print lstiter0
FAIL: libstdc++-prettyprinters/simple.cc print mp
FAIL: libstdc++-prettyprinters/simple.cc print mpiter
FAIL: libstdc++-prettyprinters/simple.cc print mpiter0
FAIL: libstdc++-prettyprinters/simple.cc print sll
FAIL: libstdc++-prettyprinters/simple.cc print slliter
FAIL: libstdc++-prettyprinters/simple.cc print sp
FAIL: libstdc++-prettyprinters/simple.cc print spciter
FAIL: libstdc++-prettyprinters/simple.cc print spiter0
FAIL: libstdc++-prettyprinters/simple.cc print v
FAIL: libstdc++-prettyprinters/simple.cc print vb
FAIL: libstdc++-prettyprinters/simple.cc print viter0
FAIL: libstdc++-prettyprinters/simple.cc print viter3
FAIL: libstdc++-prettyprinters/whatis2.cc whatis assoc1_holder
FAIL: libstdc++-prettyprinters/whatis2.cc whatis assoc2_holder
FAIL: libstdc++-prettyprinters/whatis2.cc whatis knuth_b_holder
FAIL: libstdc++-prettyprinters/whatis2.cc whatis ranlux48_holder
FAIL: libstdc++-prettyprinters/whatis2.cc whatis seq1_holder
FAIL: libstdc++-prettyprinters/whatis2.cc whatis seq2_holder
FAIL: libstdc++-xmethods/unique_ptr.cc print r[1].y
FAIL: libstdc++-xmethods/unique_ptr.cc print r.get()
FAIL: libstdc++-xmethods/unique_ptr.cc whatis r[1]
FAIL: libstdc++-xmethods/unique_ptr.cc whatis r.get()
FAIL: libstdc++-xmethods/vector.cc print bv1.at(0)
FAIL: libstdc++-xmethods/vector.cc print bv1.at(14)
FAIL: libstdc++-xmethods/vector.cc print bv1.back()
FAIL: libstdc++-xmethods/vector.cc print bv1.front()
FAIL: libstdc++-xmethods/vector.cc print bv2.at(0)
FAIL: libstdc++-xmethods/vector.cc print bv2.at(63)
FAIL: libstdc++-xmethods/vector.cc print bv2.back()
FAIL: libstdc++-xmethods/vector.cc print bv2.front()
FAIL: libstdc++-xmethods/vector.cc print bv3.at(0)
FAIL: libstdc++-xmethods/vector.cc print bv3.at(63)
FAIL: libstdc++-xmethods/vector.cc print bv3.at(64)
FAIL: libstdc++-xmethods/vector.cc print bv3.back()
FAIL: libstdc++-xmethods/vector.cc print v1.at(1)
FAIL: libstdc++-xmethods/vector.cc print v1.back()
FAIL: libstdc++-xmethods/vector.cc whatis bv0.empty()
FAIL: libstdc++-xmethods/vector.cc whatis bv0.size()
FAIL: libstdc++-xmethods/vector.cc whatis v0.empty()
FAIL: libstdc++-xmethods/vector.cc whatis v0.size()
FAIL: libstdc++-xmethods/vector.cc whatis v1.at(1)

New passes:
FAIL: 30_threads/future/members/poll.cc execution test
FAIL: gcc.dg/tree-prof/crossmodule-indir-call-topn-2.c execution,    -g
FAIL: gcc.dg/tree-prof/crossmodule-indir-call-topn-2.c execution,    -g
FAIL: g++.dg/tree-prof/partition1.C execution,    -g
FAIL: g++.dg/tree-prof/partition2.C execution,    -g