Regressions on trunk at revision 233652 vs revision 233626

[H.J. Lu x32]

New failures:
FAIL: gcc.dg/builtins-68.c  (test for errors, line 79)
FAIL: gcc.dg/builtins-68.c (test for excess errors)
FAIL: g++.dg/ext/builtin_alloca.C  -std=c++11  (test for errors, line 125)
FAIL: g++.dg/ext/builtin_alloca.C  -std=c++11 (test for excess errors)
FAIL: g++.dg/ext/builtin_alloca.C  -std=c++14  (test for errors, line 125)
FAIL: g++.dg/ext/builtin_alloca.C  -std=c++14 (test for excess errors)
FAIL: g++.dg/ext/builtin_alloca.C  -std=c++98  (test for errors, line 125)
FAIL: g++.dg/ext/builtin_alloca.C  -std=c++98 (test for excess errors)

New passes:
FAIL: libffi.call/cls_16byte.c -W -Wall -Wno-psabi -Os (test for excess errors)
FAIL: libffi.call/cls_18byte.c -W -Wall -Wno-psabi -Os (test for excess errors)
FAIL: libffi.call/cls_19byte.c -W -Wall -Wno-psabi -Os (test for excess errors)
FAIL: libffi.call/cls_20byte1.c -W -Wall -Wno-psabi -Os (test for excess errors)
FAIL: libffi.call/cls_20byte.c -W -Wall -Wno-psabi -Os (test for excess errors)
FAIL: libffi.call/cls_24byte.c -W -Wall -Wno-psabi -Os (test for excess errors)
FAIL: libffi.call/cls_64byte.c -W -Wall -Wno-psabi -Os (test for excess errors)
FAIL: libffi.call/cls_7_1_byte.c -W -Wall -Wno-psabi -Os (test for excess errors)
FAIL: libffi.call/cls_align_double.c -W -Wall -Wno-psabi -Os (test for excess errors)
FAIL: libffi.call/cls_align_longdouble.c -W -Wall -Wno-psabi -Os (test for excess errors)
FAIL: libffi.call/cls_align_longdouble_split2.c -W -Wall -Wno-psabi -Os (test for excess errors)
FAIL: libffi.call/cls_align_longdouble_split.c -W -Wall -Wno-psabi -Os (test for excess errors)
FAIL: libffi.call/cls_align_sint64.c -W -Wall -Wno-psabi -Os (test for excess errors)
FAIL: libffi.call/cls_align_uint64.c -W -Wall -Wno-psabi -Os (test for excess errors)
FAIL: libffi.call/cls_many_mixed_float_double.c -W -Wall -Wno-psabi -Os (test for excess errors)
FAIL: libffi.call/nested_struct10.c -W -Wall -Wno-psabi -Os (test for excess errors)
FAIL: libffi.call/nested_struct1.c -W -Wall -Wno-psabi -Os (test for excess errors)
FAIL: libffi.call/nested_struct3.c -W -Wall -Wno-psabi -Os (test for excess errors)
FAIL: libffi.call/nested_struct4.c -W -Wall -Wno-psabi -Os (test for excess errors)
FAIL: libffi.call/nested_struct5.c -W -Wall -Wno-psabi -Os (test for excess errors)
FAIL: libffi.call/nested_struct6.c -W -Wall -Wno-psabi -Os (test for excess errors)
FAIL: libffi.call/nested_struct7.c -W -Wall -Wno-psabi -Os (test for excess errors)
FAIL: libffi.call/nested_struct8.c -W -Wall -Wno-psabi -Os (test for excess errors)
FAIL: libffi.call/nested_struct9.c -W -Wall -Wno-psabi -Os (test for excess errors)
FAIL: libffi.call/nested_struct.c -W -Wall -Wno-psabi -Os (test for excess errors)
FAIL: libffi.call/problem1.c -W -Wall -Wno-psabi -Os (test for excess errors)
FAIL: libffi.call/stret_large2.c -W -Wall -Wno-psabi -Os (test for excess errors)
FAIL: libffi.call/stret_large.c -W -Wall -Wno-psabi -Os (test for excess errors)
FAIL: libffi.call/stret_medium2.c -W -Wall -Wno-psabi -Os (test for excess errors)
FAIL: libffi.call/stret_medium.c -W -Wall -Wno-psabi -Os (test for excess errors)