Regressions on trunk at revision 220990 vs revision 220985

[H.J. Lu Intel64 Core i7]

New failures:
FAIL: c-c++-common/ubsan/object-size-9.c   -O2 -flto -fuse-linker-plugin -fno-fat-lto-objects  output pattern test, is c-c++-common/ubsan/object-size-9.c:21:10: runtime error: load of address 0x7ffe612f333c with insufficient space for an object of type 'char'

New passes:
FAIL: c-c++-common/ubsan/object-size-9.c   -O2 -flto -fuse-linker-plugin -fno-fat-lto-objects  output pattern test, is c-c++-common/ubsan/object-size-9.c:21:10: runtime error: load of address 0x7ffe9d3da75c with insufficient space for an object of type 'char'
FAIL: gcc.dg/pr56350.c (internal compiler error)
FAIL: gcc.dg/pr56350.c (internal compiler error)
FAIL: gcc.dg/pr56350.c (test for excess errors)
FAIL: gcc.dg/pr56350.c (test for excess errors)