Regressions on trunk at revision 262945 vs revision 262936

[H.J. Lu (ia32 -fpic)]

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++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/pr19476-5.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++98  scan-tree-dump ccp1 "return 42"