Regressions on trunk at revision 182288 vs revision 182286

[H.J. Lu ia32]

New failures:

New passes:
FAIL: gcc.target/i386/bmi2-mulx32-1a.c scan-assembler-times bmi2_umulsidi3_1 1
FAIL: gcc.target/i386/bmi2-mulx32-2a.c scan-assembler-times mulx[ \\t]+[^\n]* 1