Regressions on trunk at revision 210458 vs revision 210455

[H.J. Lu Intel64 Core i7]

New failures:
FAIL: gcc.dg/guality/pr43051-1.c  -O3 -fomit-frame-pointer -funroll-all-loops -finline-functions  line 34 c == &a[0]
FAIL: gcc.dg/guality/pr43051-1.c  -O3 -fomit-frame-pointer -funroll-loops  line 34 c == &a[0]
FAIL: gcc.dg/shrink-wrap-loop.c scan-rtl-dump pro_and_epilogue "Performing shrink-wrapping"
FAIL: gcc.target/i386/pr49095.c scan-assembler-not test[lq]

New passes: