Regressions on trunk at revision 193322 vs revision 193294

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

New failures:
FAIL: gcc.dg/tree-ssa/cunroll-1.c scan-tree-dump cunrolli "Unrolled loop 1 completely .duplicated 1 times.."
FAIL: gcc.dg/tree-ssa/cunroll-1.c scan-tree-dump cunrolli "Unrolled loop 1 completely .duplicated 1 times.."

New passes:
FAIL: gcc.dg/pr55151.c (internal compiler error)
FAIL: gcc.dg/pr55151.c (test for excess errors)
FAIL: gcc.target/i386/pr44948-2a.c (internal compiler error)
FAIL: gcc.target/i386/pr44948-2a.c (test for excess errors)
FAIL: gcc.target/i386/tailcall-1.c scan-assembler jmp