Regressions on trunk at revision 247597 vs revision 247591

[H.J. Lu Intel64 Core i7]

New failures:
FAIL: gcc.dg/guality/pr41616-1.c   -O3 -g  execution test
FAIL: gcc.dg/guality/pr41616-1.c   -O3 -g  execution test

New passes:
FAIL: g++.dg/guality/pr55665.C   -O3 -g  line 23 p == 40
FAIL: g++.dg/guality/pr55665.C   -O3 -g  line 23 p == 40