Regressions on trunk at revision 172915 vs revision 172891

[intel64profiled@gnu-16.sc.intel.com]

New failures:
FAIL: gcc.target/i386/pr48723.c (internal compiler error)
FAIL: gcc.target/i386/pr48723.c (test for excess errors)

New passes:
FAIL: g++.dg/other/i386-9.C (internal compiler error)
FAIL: g++.dg/other/i386-9.C (internal compiler error)
FAIL: g++.dg/other/i386-9.C (test for excess errors)
FAIL: g++.dg/other/i386-9.C (test for excess errors)
FAIL: gcc.c-torture/execute/builtins/strlen-3.c execution,  -O2 -flto 
FAIL: gcc.c-torture/execute/builtins/strlen-3.c execution,  -O2 -flto 
FAIL: gcc.c-torture/execute/builtins/strlen-3.c execution,  -O2 -flto -flto-partition=none 
FAIL: gcc.c-torture/execute/builtins/strlen-3.c execution,  -O2 -flto -flto-partition=none