Regressions on trunk at revision 194435 vs revision 194393

[H.J. Lu Intel64 Core 2/i7]

New failures:

New passes:
FAIL: g++.dg/asan/asan_test.C  -O2  AddressSanitizer_PthreadExitTest execution test
FAIL: g++.dg/asan/asan_test.C  -O2  AddressSanitizer_PthreadExitTest execution test
FAIL: g++.dg/asan/asan_test.C  -O2  AddressSanitizer_SignalTest *c = 0 output pattern test, should match AddressSanitizer: SEGV on unknown address
FAIL: g++.dg/asan/asan_test.C  -O2  AddressSanitizer_SignalTest *c = 0 output pattern test, should match AddressSanitizer: SEGV on unknown address
FAIL: g++.dg/asan/asan_test.C  -O2  AddressSanitizer_SignalTest *c = 0 output pattern test, should match AddressSanitizer: SEGV on unknown address
FAIL: g++.dg/asan/asan_test.C  -O2  AddressSanitizer_SignalTest *c = 0 output pattern test, should match AddressSanitizer: SEGV on unknown address
FAIL: g++.dg/asan/asan_test.C  -O2  AddressSanitizer_ThreadStackReuseTest execution test
FAIL: g++.dg/asan/asan_test.C  -O2  AddressSanitizer_ThreadStackReuseTest execution test
FAIL: g++.dg/asan/asan_test.C  -O2  AddressSanitizer_ThreadedTest ThreadedTestSpawn() output pattern test, should match Thread T.*created.*Thread T.*created.*Thread T.*created
FAIL: g++.dg/asan/asan_test.C  -O2  AddressSanitizer_ThreadedTest ThreadedTestSpawn() output pattern test, should match Thread T.*created.*Thread T.*created.*Thread T.*created
FAIL: gcc.dg/builtin-object-size-8.c execution test
FAIL: gcc.dg/builtin-object-size-8.c execution test