[X86] Atom (pre-SLM) doesn't support PTEST instructions

Author: RKSimon

llvm/lib/Target/X86/X86ScheduleAtom.td

@@ -384,7 +384,7 @@ defm : AtomWriteResPair<WriteVecLogic,     [AtomPort01],  [AtomPort0], 1, 1>;
 defm : AtomWriteResPair<WriteVecLogicX,    [AtomPort01],  [AtomPort0], 1, 1>;
 defm : X86WriteResPairUnsupported<WriteVecLogicY>;
 defm : X86WriteResPairUnsupported<WriteVecLogicZ>;
-defm : AtomWriteResPair<WriteVecTest,      [AtomPort01],  [AtomPort0], 1, 1>;
+defm : X86WriteResPairUnsupported<WriteVecTest>;
 defm : X86WriteResPairUnsupported<WriteVecTestY>;
 defm : X86WriteResPairUnsupported<WriteVecTestZ>;
 defm : AtomWriteResPair<WriteVecShift,     [AtomPort01], [AtomPort01], 2, 3, [2], [3]>;