Regressions on trunk at revision 262945 vs revision 262935

[H.J. Lu (Intel64 Core i7)]

New failures:

New passes:
FAIL: g++.dg/tree-ssa/pr19476-1.C  -std=gnu++11  scan-tree-dump ccp1 "return 42"
FAIL: g++.dg/tree-ssa/pr19476-1.C  -std=gnu++11  scan-tree-dump ccp1 "return 42"
FAIL: g++.dg/tree-ssa/pr19476-1.C  -std=gnu++14  scan-tree-dump ccp1 "return 42"
FAIL: g++.dg/tree-ssa/pr19476-1.C  -std=gnu++14  scan-tree-dump ccp1 "return 42"
FAIL: g++.dg/tree-ssa/pr19476-1.C  -std=gnu++98  scan-tree-dump ccp1 "return 42"
FAIL: g++.dg/tree-ssa/pr19476-1.C  -std=gnu++98  scan-tree-dump ccp1 "return 42"
FAIL: g++.dg/tree-ssa/pr19476-5.C  -std=gnu++11  scan-tree-dump ccp1 "return 42"
FAIL: g++.dg/tree-ssa/pr19476-5.C  -std=gnu++11  scan-tree-dump ccp1 "return 42"
FAIL: g++.dg/tree-ssa/pr19476-5.C  -std=gnu++14  scan-tree-dump ccp1 "return 42"
FAIL: g++.dg/tree-ssa/pr19476-5.C  -std=gnu++14  scan-tree-dump ccp1 "return 42"
FAIL: g++.dg/tree-ssa/pr19476-5.C  -std=gnu++98  scan-tree-dump ccp1 "return 42"
FAIL: g++.dg/tree-ssa/pr19476-5.C  -std=gnu++98  scan-tree-dump ccp1 "return 42"