Regressions on trunk at revision 182383 vs revision 182377

[H.J. Lu x32]

New failures:
FAIL: g++.dg/template/sfinae21.C -std=c++11 (test for excess errors)
FAIL: gcc.dg/tree-ssa/vrp47.c (test for excess errors)

New passes:
FAIL: gcc.dg/tree-ssa/vrp47.c scan-tree-dump-times dom1 "x[^ ]* & y" 1
FAIL: libgomp.graphite/force-parallel-6.c execution test
WARNING: program timed out.