Regressions on trunk at revision 193151 vs revision 193132

[H.J. Lu ia32]

New failures:
FAIL: gcc.dg/guality/pr54693.c  -O1  line 22 i == c - 48

New passes:
FAIL: gcc.dg/guality/pr43051-1.c  -O3 -fomit-frame-pointer  line 34 c == &a[0]
FAIL: gcc.dg/guality/pr43051-1.c  -O3 -fomit-frame-pointer  line 39 c == &a[0]
FAIL: gcc.dg/guality/pr43051-1.c  -O3 -g  line 34 c == &a[0]
FAIL: gcc.dg/guality/pr43051-1.c  -O3 -g  line 39 c == &a[0]