Regressions on trunk at revision 219041 vs revision 219011

[H.J. Lu Intel64]

New failures:
FAIL: gcc.dg/pr44194-1.c scan-rtl-dump dse1 "global deletions = (2|3)"
FAIL: gcc.dg/pr44194-1.c scan-rtl-dump-not final "insn[: ][^\n]*set \\(mem(?![^\n]*scratch)"

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:21:11: runtime error: load of address 0x7fff8688e30c with insufficient space for an object of type 'char'