Lower the select instruction when the operands are of vector type.

src/IceTargetLoweringX8632.h

 //===- subzero/src/IceTargetLoweringX8632.h - x86-32 lowering ---*- C++ -*-===//
 //
 //                        The Subzero Code Generator
 //
 // This file is distributed under the University of Illinois Open Source
 // License. See LICENSE.TXT for details.
 //
 //===----------------------------------------------------------------------===//
 //
 // This file declares the TargetLoweringX8632 class, which
@@ skipping 282 matching lines @@
   }
   void _or(Variable *Dest, Operand *Src0) {
     Context.insert(InstX8632Or::create(Func, Dest, Src0));
   }
   void _padd(Variable *Dest, Operand *Src0) {
     Context.insert(InstX8632Padd::create(Func, Dest, Src0));
   }
   void _pand(Variable *Dest, Operand *Src0) {
     Context.insert(InstX8632Pand::create(Func, Dest, Src0));
   }
+  void _pandn(Variable *Dest, Operand *Src0) {
+    Context.insert(InstX8632Pandn::create(Func, Dest, Src0));
+  }
   void _pcmpeq(Variable *Dest, Operand *Src0) {
     Context.insert(InstX8632Pcmpeq::create(Func, Dest, Src0));
   }
   void _pcmpgt(Variable *Dest, Operand *Src0) {
     Context.insert(InstX8632Pcmpgt::create(Func, Dest, Src0));
   }
   void _pextrw(Variable *Dest, Operand *Src0, Operand *Src1) {
     Context.insert(InstX8632Pextrw::create(Func, Dest, Src0, Src1));
   }
   void _pinsrw(Variable *Dest, Operand *Src0, Operand *Src1) {
@@ skipping 135 matching lines @@
   virtual ~TargetGlobalInitX8632() {}
 };
 
 template <> void ConstantInteger::emit(GlobalContext *Ctx) const;
 template <> void ConstantFloat::emit(GlobalContext *Ctx) const;
 template <> void ConstantDouble::emit(GlobalContext *Ctx) const;
 
 } // end of namespace Ice
 
 #endif // SUBZERO_SRC_ICETARGETLOWERINGX8632_H