Regressions on trunk at revision 218211 vs revision 218198

[H.J. Lu x32]

New failures:
FAIL: gcc.target/i386/avx512ifma-vpmaddhuq-2.c (test for excess errors)
FAIL: gcc.target/i386/avx512ifma-vpmaddluq-2.c (test for excess errors)
FAIL: gcc.target/i386/avx512vbmi-vpermb-2.c (test for excess errors)
FAIL: gcc.target/i386/avx512vbmi-vpermi2b-2.c (test for excess errors)
FAIL: gcc.target/i386/avx512vbmi-vpermt2b-2.c (test for excess errors)
FAIL: gcc.target/i386/avx512vbmi-vpmultishiftqb-2.c (test for excess errors)

New passes:
FAIL: gcc.dg/pr37289.c scan-tree-dump original "-\\(long unsigned int\\) x"