Regressions on trunk at revision 209235 vs revision 209214

[H.J. Lu Intel64 Core i7]

New failures:

New passes:
FAIL: gcc.dg/builtin-bswap-6.c scan-rtl-dump-not combine "bswapsi"
FAIL: gcc.dg/builtin-bswap-6.c scan-rtl-dump-not combine "bswapsi"
FAIL: gcc.dg/builtin-bswap-7.c scan-rtl-dump-not combine "bswapdi"