Regressions on trunk at revision 234306 vs revision 234279

[Intel Automatic Testing System [Intel64 Core AVX2 PIC]]

New failures:

New passes:
FAIL: g++.dg/opt/pr70245.C  -std=gnu++11 execution test
FAIL: g++.dg/opt/pr70245.C  -std=gnu++14 execution test
FAIL: g++.dg/opt/pr70245.C  -std=gnu++98 execution test