Regressions on trunk at revision 247616 vs revision 247589

[Intel Automatic Testing System [ia32 Core AVX2]]

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

New passes:
FAIL: gcc.dg/guality/pr54970.c   -Os  line 31 a[0] == 4
FAIL: gcc.dg/guality/pr54970.c   -Os  line 36 a[0] == 4
FAIL: gcc.dg/guality/pr54970.c   -Os  line 45 a[0] == 4
FAIL: gcc.dg/guality/pr54970.c   -Os  line 45 p[-2] == 4
FAIL: gcc.dg/guality/pr54970.c   -Os  line 45 q[-1] == 4
FAIL: g++.dg/guality/pr55665.C   -O3 -g  line 23 p == 40