Regressions on trunk at revision 219950 vs revision 219928

[H.J. Lu ia32 -fpic]

New failures:
FAIL: c-c++-common/ubsan/object-size-9.c   -O2  output pattern test, is c-c++-common/ubsan/object-size-9.c:21:11: runtime error: load of address 0xffcb59ec with insufficient space for an object of type 'char'
FAIL: c-c++-common/ubsan/object-size-9.c   -O2 -flto -fno-use-linker-plugin -flto-partition=none  output pattern test, is c-c++-common/ubsan/object-size-9.c:21:11: runtime error: load of address 0xfffb53ec with insufficient space for an object of type 'char'

New passes:
FAIL: c-c++-common/ubsan/object-size-9.c   -O2  output pattern test, is c-c++-common/ubsan/object-size-9.c:21:11: runtime error: load of address 0xff87adec with insufficient space for an object of type 'char'
FAIL: c-c++-common/ubsan/object-size-9.c   -O2 -flto -fno-use-linker-plugin -flto-partition=none  output pattern test, is c-c++-common/ubsan/object-size-9.c:21:11: runtime error: load of address 0xffa9c2bc with insufficient space for an object of type 'char'