Regressions on trunk at revision 273872 vs revision 273864

[H.J. Lu (ia32)]

New failures:

New passes:
FAIL: gcc.dg/guality/pr54970.c  -Og -DPREVENT_OPTIMIZATION  line 15 a[1] == 2
FAIL: gcc.dg/guality/pr54970.c  -Og -DPREVENT_OPTIMIZATION  line 15 a[2] == 3
FAIL: gcc.dg/guality/pr54970.c  -Og -DPREVENT_OPTIMIZATION  line 15 *p == 3
FAIL: gcc.dg/guality/pr54970.c  -Og -DPREVENT_OPTIMIZATION  line 15 *q == 2
FAIL: gcc.dg/guality/pr54970.c  -Og -DPREVENT_OPTIMIZATION  line 20 a[1] == 2
FAIL: gcc.dg/guality/pr54970.c  -Og -DPREVENT_OPTIMIZATION  line 20 a[2] == 13
FAIL: gcc.dg/guality/pr54970.c  -Og -DPREVENT_OPTIMIZATION  line 20 *p == 13
FAIL: gcc.dg/guality/pr54970.c  -Og -DPREVENT_OPTIMIZATION  line 20 *q == 2
FAIL: gcc.dg/guality/pr54970.c  -Og -DPREVENT_OPTIMIZATION  line 25 a[1] == 12
FAIL: gcc.dg/guality/pr54970.c  -Og -DPREVENT_OPTIMIZATION  line 25 a[2] == 13
FAIL: gcc.dg/guality/pr54970.c  -Og -DPREVENT_OPTIMIZATION  line 25 *p == 13
FAIL: gcc.dg/guality/pr54970.c  -Og -DPREVENT_OPTIMIZATION  line 25 *q == 12
FAIL: gcc.dg/guality/pr54970.c  -Og -DPREVENT_OPTIMIZATION  line 31 a[1] == 5
FAIL: gcc.dg/guality/pr54970.c  -Og -DPREVENT_OPTIMIZATION  line 31 a[2] == 6
FAIL: gcc.dg/guality/pr54970.c  -Og -DPREVENT_OPTIMIZATION  line 31 *p == 6
FAIL: gcc.dg/guality/pr54970.c  -Og -DPREVENT_OPTIMIZATION  line 31 *q == 5
FAIL: gcc.dg/guality/pr54970.c  -Og -DPREVENT_OPTIMIZATION  line 36 a[1] == 5
FAIL: gcc.dg/guality/pr54970.c  -Og -DPREVENT_OPTIMIZATION  line 36 a[2] == 26
FAIL: gcc.dg/guality/pr54970.c  -Og -DPREVENT_OPTIMIZATION  line 36 *p == 26
FAIL: gcc.dg/guality/pr54970.c  -Og -DPREVENT_OPTIMIZATION  line 36 *q == 5
FAIL: gcc.dg/guality/pr54970.c  -Og -DPREVENT_OPTIMIZATION  line 45 a[1] == 25
FAIL: gcc.dg/guality/pr54970.c  -Og -DPREVENT_OPTIMIZATION  line 45 a[2] == 26
FAIL: gcc.dg/guality/pr54970.c  -Og -DPREVENT_OPTIMIZATION  line 45 p[-1] == 25
FAIL: gcc.dg/guality/pr54970.c  -Og -DPREVENT_OPTIMIZATION  line 45 *p == 26
FAIL: gcc.dg/guality/pr54970.c  -Og -DPREVENT_OPTIMIZATION  line 45 q[1] == 26
FAIL: gcc.dg/guality/pr54970.c  -Og -DPREVENT_OPTIMIZATION  line 45 *q == 25