Regressions on trunk at revision 239775 vs revision 239769

[H.J. Lu Intel64 Core i7]

New failures:
FAIL: gcc.dg/tree-ssa/pr69270-3.c scan-tree-dump-times uncprop1 ", 1" 4
FAIL: gcc.dg/tree-ssa/slsr-8.c scan-tree-dump-times optimized " w?\\* " 7
FAIL: gcc.dg/tree-ssa/ssa-dom-cse-2.c scan-tree-dump optimized "return 28;"
FAIL: gcc.dg/vect/costmodel/i386/costmodel-fast-math-vect-pr29925.c scan-tree-dump-times vect "vectorized 1 loops" 1
FAIL: gcc.dg/vect/costmodel/x86_64/costmodel-fast-math-vect-pr29925.c scan-tree-dump-times vect "vectorized 1 loops" 1
FAIL: gcc.target/i386/pr70021.c scan-tree-dump-times vect "vectorized 1 loops" 2

New passes: