Regressions on trunk at revision 148619 vs revision 148589

[H.J. Lu ia64]

New failures:
FAIL: gcc.c-torture/compile/limits-fndefn.c  -O3 -g  (test for excess errors)
WARNING: program timed out.

New passes:
FAIL: g++.dg/torture/pr32950.C  -O1  (internal compiler error)
FAIL: g++.dg/torture/pr32950.C  -O1  (test for excess errors)
FAIL: g++.dg/torture/pr32950.C  -O2  (internal compiler error)
FAIL: g++.dg/torture/pr32950.C  -O2  (test for excess errors)
FAIL: g++.dg/torture/pr32950.C  -O3 -fomit-frame-pointer  (internal compiler error)
FAIL: g++.dg/torture/pr32950.C  -O3 -fomit-frame-pointer  (test for excess errors)
FAIL: g++.dg/torture/pr32950.C  -O3 -g  (internal compiler error)
FAIL: g++.dg/torture/pr32950.C  -O3 -g  (test for excess errors)
FAIL: g++.dg/torture/pr32950.C  -Os  (internal compiler error)
FAIL: g++.dg/torture/pr32950.C  -Os  (test for excess errors)
FAIL: gcc.dg/func-ptr-conv-1.c (test for excess errors)
FAIL: gcc.dg/func-ptr-conv-1.c bad conversion (test for warnings, line 40)
FAIL: gcc.dg/func-ptr-conv-1.c bad conversion (test for warnings, line 41)