Regressions on trunk at revision 251076 vs revision 251075

[H.J. Lu Intel64 Core i7]

New failures:

New passes:
FAIL: gcc.dg/guality/pr58791-5.c   -Os  line pr58791-5.c:20 b1 == 9
FAIL: gcc.dg/guality/pr58791-5.c   -Os  line pr58791-5.c:20 b2 == 73
FAIL: gcc.dg/guality/pr58791-5.c   -Os  line pr58791-5.c:20 b3 == 585
FAIL: gcc.dg/guality/pr58791-5.c   -Os  line pr58791-5.c:20 b4 == 4681
FAIL: gcc.dg/guality/pr59776.c   -Os  line pr59776.c:17 s1.f == 5.0
FAIL: gcc.dg/guality/pr59776.c   -Os  line pr59776.c:17 s1.g == 6.0
FAIL: gcc.dg/guality/pr59776.c   -Os  line pr59776.c:17 s2.g == 6.0
FAIL: gcc.dg/guality/pr59776.c   -Os  line pr59776.c:20 s1.f == 5.0
FAIL: gcc.dg/guality/pr59776.c   -Os  line pr59776.c:20 s1.g == 6.0
FAIL: gcc.dg/guality/pr59776.c   -Os  line pr59776.c:20 s2.f == 5.0
FAIL: gcc.dg/guality/pr59776.c   -Os  line pr59776.c:20 s2.g == 6.0