Regressions on trunk at revision 238213 vs revision 237994

[H.J. Lu x32]

New failures:
FAIL: g++.dg/pr71624.C  -std=gnu++11 (test for excess errors)
FAIL: g++.dg/pr71624.C  -std=gnu++14 (test for excess errors)
FAIL: g++.dg/pr71624.C  -std=gnu++98 (test for excess errors)
FAIL: gfortran.dg/ldist-1.f90   -O   scan-tree-dump ldist "distributed: split to"
FAIL: gfortran.dg/pr42108.f90   -O   scan-tree-dump pre "in all uses of countm1[^\n]* / "
FAIL: gfortran.dg/vect/pr62283.f   -O   scan-tree-dump-times vect "vectorized 1 loops" 2

New passes: