Regressions on trunk at revision 145191 vs revision 145146

[H.J. Lu ia32]

New failures:
FAIL: ext/pb_ds/example/basic_set.cc (test for excess errors)
FAIL: gcc.dg/torture/ipa-pta-1.c  -O1  scan-ipa-dump pta "bar.arg0 = { test4.arg0 test3.arg0 test2.arg0 test1.arg0 }"
FAIL: gcc.dg/torture/ipa-pta-1.c  -O2  scan-ipa-dump pta "bar.arg0 = { test4.arg0 test3.arg0 test2.arg0 test1.arg0 }"
FAIL: gcc.dg/torture/ipa-pta-1.c  -O3 -fomit-frame-pointer  scan-ipa-dump pta "bar.arg0 = { test4.arg0 test3.arg0 test2.arg0 test1.arg0 }"
FAIL: gcc.dg/torture/ipa-pta-1.c  -O3 -g  scan-ipa-dump pta "bar.arg0 = { test4.arg0 test3.arg0 test2.arg0 test1.arg0 }"
FAIL: gcc.dg/torture/ipa-pta-1.c  -Os  scan-ipa-dump pta "bar.arg0 = { test4.arg0 test3.arg0 test2.arg0 test1.arg0 }"
FAIL: gcc.dg/vect/vect-strided-same-dr.c (internal compiler error)
FAIL: gcc.dg/vect/vect-strided-same-dr.c (test for excess errors)

New passes: