Regressions on trunk at revision 235856 vs revision 235845

[H.J. Lu ia32 -fpic]

New failures:
FAIL: gcc.target/i386/avx512f-vprord-1.c scan-assembler-times vprord[ \\t]+[^{\n]*%zmm[0-9]+(?:\n|[ \\t]+#) 1
FAIL: gcc.target/i386/avx512f-vprord-1.c scan-assembler-times vprord[ \\t]+[^{\n]*%zmm[0-9]+{%k[1-7]}(?:\n|[ \\t]+#) 1
FAIL: gcc.target/i386/avx512f-vprord-1.c scan-assembler-times vprord[ \\t]+[^{\n]*%zmm[0-9]+{%k[1-7]}{z}(?:\n|[ \\t]+#) 1

New passes:
FAIL: gfortran.dg/coarray/send_array.f90 -fcoarray=lib  -O2  -lcaf_single -latomic execution test
FAIL: gfortran.dg/internal_pack_6.f90   -Os  execution test
FAIL: gfortran.fortran-torture/execute/list_read_1.f90 execution,  -Os