Regressions on trunk at revision 194357 vs revision 194332

[H.J. Lu ia32 Core 2/i7]

New failures:

New passes:
FAIL: g++.dg/asan/asan_test.C  -O2  AddressSanitizer_BitFieldPositiveTest x->bf1 = 0 execution test
FAIL: g++.dg/asan/asan_test.C  -O2  AddressSanitizer_BitFieldPositiveTest x->bf2 = 0 execution test
FAIL: g++.dg/asan/asan_test.C  -O2  AddressSanitizer_BitFieldPositiveTest x->bf3 = 0 execution test
FAIL: g++.dg/asan/asan_test.C  -O2  AddressSanitizer_BitFieldPositiveTest x->bf4 = 0 execution test
FAIL: g++.dg/asan/asan_test.C  -O2  AddressSanitizer_GlobalStringConstTest Ident(p[15]) execution test