Regressions on trunk at revision 226217 vs revision 226199

[H.J. Lu Intel64 Core i7]

New failures:

New passes:
FAIL: c-c++-common/dfp/func-vararg-dfp.c execution test
FAIL: c-c++-common/dfp/func-vararg-mixed-2.c execution test
FAIL: c-c++-common/dfp/func-vararg-mixed.c execution test
FAIL: c-c++-common/torture/vector-shift1.c   -O0  execution test
FAIL: c-c++-common/torture/vector-shift1.c   -O0  execution test
FAIL: gcc.c-torture/execute/ieee/pr50310.c execution,  -O3 -fomit-frame-pointer -funroll-loops -fpeel-loops -ftracer -finline-functions 
FAIL: gcc.c-torture/execute/ieee/pr50310.c execution,  -O3 -g 
FAIL: gcc.dg/compat/scalar-return-dfp c_compat_x_tst.o-c_compat_y_tst.o execute 
FAIL: gcc.dg/torture/pr57748-1.c   -O0  execution test
FAIL: gcc.dg/torture/pr57748-2.c   -O0  execution test
FAIL: gcc.dg/torture/pr57748-3.c   -O0  execution test
FAIL: gcc.dg/torture/pr57748-4.c   -O0  execution test
FAIL: gcc.target/i386/pr66978.c (internal compiler error)
FAIL: gcc.target/i386/pr66978.c (test for excess errors)