Regressions on trunk at revision 193087 vs revision 193061

[H.J. Lu ia32 Core 2/i7]

New failures:

New passes:
FAIL: g++.dg/torture/pr46154.C  -O2  (internal compiler error)
FAIL: g++.dg/torture/pr46154.C  -O2  (test for excess errors)
FAIL: g++.dg/torture/pr46154.C  -O2 -flto -fno-use-linker-plugin -flto-partition=none  (internal compiler error)
FAIL: g++.dg/torture/pr46154.C  -O2 -flto -fno-use-linker-plugin -flto-partition=none  (test for excess errors)
FAIL: g++.dg/torture/pr46154.C  -O3 -fomit-frame-pointer  (internal compiler error)
FAIL: g++.dg/torture/pr46154.C  -O3 -fomit-frame-pointer  (test for excess errors)
FAIL: g++.dg/torture/pr46154.C  -O3 -g  (internal compiler error)
FAIL: g++.dg/torture/pr46154.C  -O3 -g  (test for excess errors)