Regressions on trunk at revision 211849 vs revision 211847

[H.J. Lu ia32]

New failures:
FAIL: c-c++-common/asan/strlen-overflow-1.c  -O0  output pattern test, is =================================================================
FAIL: c-c++-common/asan/strlen-overflow-1.c  -O0  output pattern test, is =================================================================
FAIL: c-c++-common/asan/strlen-overflow-1.c  -O1  output pattern test, is =================================================================
FAIL: c-c++-common/asan/strlen-overflow-1.c  -O1  output pattern test, is =================================================================
FAIL: c-c++-common/asan/strlen-overflow-1.c  -O2  output pattern test, is =================================================================
FAIL: c-c++-common/asan/strlen-overflow-1.c  -O2  output pattern test, is =================================================================
FAIL: c-c++-common/asan/strlen-overflow-1.c  -O3 -fomit-frame-pointer -funroll-all-loops -finline-functions  output pattern test, is =================================================================
FAIL: c-c++-common/asan/strlen-overflow-1.c  -O3 -fomit-frame-pointer -funroll-all-loops -finline-functions  output pattern test, is =================================================================
FAIL: c-c++-common/asan/strlen-overflow-1.c  -O3 -fomit-frame-pointer -funroll-loops  output pattern test, is =================================================================
FAIL: c-c++-common/asan/strlen-overflow-1.c  -O3 -fomit-frame-pointer -funroll-loops  output pattern test, is =================================================================
FAIL: c-c++-common/asan/strlen-overflow-1.c  -O3 -fomit-frame-pointer  output pattern test, is =================================================================
FAIL: c-c++-common/asan/strlen-overflow-1.c  -O3 -fomit-frame-pointer  output pattern test, is =================================================================
FAIL: c-c++-common/asan/strlen-overflow-1.c  -O3 -g  output pattern test, is =================================================================
FAIL: c-c++-common/asan/strlen-overflow-1.c  -O3 -g  output pattern test, is =================================================================
FAIL: c-c++-common/asan/strlen-overflow-1.c  -Os  output pattern test, is =================================================================
FAIL: c-c++-common/asan/strlen-overflow-1.c  -Os  output pattern test, is =================================================================

New passes: