Regressions on trunk at revision 262689 vs revision 262660

[H.J. Lu ia32 Core i7]

New failures:
FAIL: gcc.dg/guality/pr54970.c  -Og -DPREVENT_OPTIMIZATION  line .+1 *p == 13
FAIL: gcc.dg/guality/pr54970.c  -Og -DPREVENT_OPTIMIZATION  line .+1 *p == 13
FAIL: gcc.dg/guality/pr54970.c  -Og -DPREVENT_OPTIMIZATION  line .+1 *p == 26
FAIL: gcc.dg/guality/pr54970.c  -Og -DPREVENT_OPTIMIZATION  line .+1 *p == 3
FAIL: gcc.dg/guality/pr54970.c  -Og -DPREVENT_OPTIMIZATION  line .+1 *p == 6
FAIL: gcc.dg/guality/pr54970.c  -Og -DPREVENT_OPTIMIZATION  line .+1 q[1] == 26
FAIL: gcc.dg/guality/pr54970.c  -Og -DPREVENT_OPTIMIZATION  line .+2 a[2] == 13
FAIL: gcc.dg/guality/pr54970.c  -Og -DPREVENT_OPTIMIZATION  line .+2 a[2] == 13
FAIL: gcc.dg/guality/pr54970.c  -Og -DPREVENT_OPTIMIZATION  line .+2 a[2] == 26
FAIL: gcc.dg/guality/pr54970.c  -Og -DPREVENT_OPTIMIZATION  line .+2 a[2] == 3
FAIL: gcc.dg/guality/pr54970.c  -Og -DPREVENT_OPTIMIZATION  line .+2 a[2] == 6
FAIL: gcc.dg/guality/pr54970.c  -Og -DPREVENT_OPTIMIZATION  line .+3 a[1] == 12
FAIL: gcc.dg/guality/pr54970.c  -Og -DPREVENT_OPTIMIZATION  line .+3 a[1] == 2
FAIL: gcc.dg/guality/pr54970.c  -Og -DPREVENT_OPTIMIZATION  line .+3 a[1] == 2
FAIL: gcc.dg/guality/pr54970.c  -Og -DPREVENT_OPTIMIZATION  line .+3 a[1] == 5
FAIL: gcc.dg/guality/pr54970.c  -Og -DPREVENT_OPTIMIZATION  line .+3 a[1] == 5
FAIL: gcc.dg/guality/pr54970.c  -Og -DPREVENT_OPTIMIZATION  line .+4 a[0] == 1
FAIL: gcc.dg/guality/pr54970.c  -Og -DPREVENT_OPTIMIZATION  line .+4 a[0] == 1
FAIL: gcc.dg/guality/pr54970.c  -Og -DPREVENT_OPTIMIZATION  line .+4 a[0] == 1
FAIL: gcc.dg/guality/pr54970.c  -Og -DPREVENT_OPTIMIZATION  line .+4 p[-1] == 25
FAIL: gcc.dg/guality/pr54970.c  -Og -DPREVENT_OPTIMIZATION  line .+5 *p == 26
FAIL: gcc.dg/guality/pr54970.c  -Og -DPREVENT_OPTIMIZATION  line .+6 a[2] == 26
FAIL: gcc.dg/guality/pr54970.c  -Og -DPREVENT_OPTIMIZATION  line .+7 a[1] == 25
FAIL: gcc.dg/guality/pr54970.c  -Og -DPREVENT_OPTIMIZATION  line . *q == 12
FAIL: gcc.dg/guality/pr54970.c  -Og -DPREVENT_OPTIMIZATION  line . *q == 2
FAIL: gcc.dg/guality/pr54970.c  -Og -DPREVENT_OPTIMIZATION  line . *q == 2
FAIL: gcc.dg/guality/pr54970.c  -Og -DPREVENT_OPTIMIZATION  line . *q == 25
FAIL: gcc.dg/guality/pr54970.c  -Og -DPREVENT_OPTIMIZATION  line . *q == 5
FAIL: gcc.dg/guality/pr54970.c  -Og -DPREVENT_OPTIMIZATION  line . *q == 5
FAIL: gcc.dg/guality/pr56154-1.c  -Og -DPREVENT_OPTIMIZATION  line pr56154-1.c:20 x.a == 6
FAIL: gcc.dg/guality/pr59776.c  -Og -DPREVENT_OPTIMIZATION  line pr59776.c:17 s1.f == 5.0
FAIL: gcc.dg/guality/pr59776.c  -Og -DPREVENT_OPTIMIZATION  line pr59776.c:17 s1.g == 6.0
FAIL: gcc.dg/guality/pr59776.c  -Og -DPREVENT_OPTIMIZATION  line pr59776.c:17 s2.f == 0.0
FAIL: gcc.dg/guality/pr59776.c  -Og -DPREVENT_OPTIMIZATION  line pr59776.c:17 s2.g == 6.0
FAIL: gcc.dg/guality/pr59776.c  -Og -DPREVENT_OPTIMIZATION  line pr59776.c:20 s1.f == 5.0
FAIL: gcc.dg/guality/pr59776.c  -Og -DPREVENT_OPTIMIZATION  line pr59776.c:20 s1.g == 6.0
FAIL: gcc.dg/guality/pr59776.c  -Og -DPREVENT_OPTIMIZATION  line pr59776.c:20 s2.f == 5.0
FAIL: gcc.dg/guality/pr59776.c  -Og -DPREVENT_OPTIMIZATION  line pr59776.c:20 s2.g == 6.0
FAIL: gcc.dg/guality/sra-1.c  -Og -DPREVENT_OPTIMIZATION  line .+1 a[0] == 4
FAIL: gcc.dg/guality/sra-1.c  -Og -DPREVENT_OPTIMIZATION  line .+1 a.i == 4
FAIL: gcc.dg/guality/sra-1.c  -Og -DPREVENT_OPTIMIZATION  line .+1 a.i == 4
FAIL: gcc.dg/guality/sra-1.c  -Og -DPREVENT_OPTIMIZATION  line . a[1] == 14
FAIL: gcc.dg/guality/sra-1.c  -Og -DPREVENT_OPTIMIZATION  line . a.j == 14
FAIL: gcc.dg/guality/sra-1.c  -Og -DPREVENT_OPTIMIZATION  line . a.j == 14

New passes: