Inline memset when there is a constant value and count.

src/IceInstX86BaseImpl.h

 //===- subzero/src/IceInstX86BaseImpl.h - Generic X86 instructions -*- C++ -*=//
 //
 //                        The Subzero Code Generator
 //
 // This file is distributed under the University of Illinois Open Source
 // License. See LICENSE.TXT for details.
 //
 //===----------------------------------------------------------------------===//
 ///
 /// \file
@@ skipping 2116 matching lines @@
   Str << ", ";
   this->getSrc(0)->dump(Func);
 }
 
 template <class Machine>
 void InstX86StoreP<Machine>::emit(const Cfg *Func) const {
   if (!BuildDefs::dump())
     return;
   Ostream &Str = Func->getContext()->getStrEmit();
   assert(this->getSrcSize() == 2);
+  assert(isVectorType(this->getSrc(1)->getType()));
   Str << "\tmovups\t";
   this->getSrc(0)->emit(Func);
   Str << ", ";
   this->getSrc(1)->emit(Func);
 }
 
 template <class Machine>
 void InstX86StoreP<Machine>::emitIAS(const Cfg *Func) const {
   typename InstX86Base<Machine>::Traits::Assembler *Asm =
       Func->getAssembler<typename InstX86Base<Machine>::Traits::Assembler>();
@@ skipping 21 matching lines @@
   this->getSrc(0)->dump(Func);
 }
 
 template <class Machine>
 void InstX86StoreQ<Machine>::emit(const Cfg *Func) const {
   if (!BuildDefs::dump())
     return;
   Ostream &Str = Func->getContext()->getStrEmit();
   assert(this->getSrcSize() == 2);
   assert(this->getSrc(1)->getType() == IceType_i64 ||
-         this->getSrc(1)->getType() == IceType_f64);
+         this->getSrc(1)->getType() == IceType_f64 ||
+         isVectorType(this->getSrc(1)->getType()));
   Str << "\tmovq\t";
   this->getSrc(0)->emit(Func);
   Str << ", ";
   this->getSrc(1)->emit(Func);
 }
 
 template <class Machine>
 void InstX86StoreQ<Machine>::emitIAS(const Cfg *Func) const {
   typename InstX86Base<Machine>::Traits::Assembler *Asm =
       Func->getAssembler<typename InstX86Base<Machine>::Traits::Assembler>();
@@ skipping 963 matching lines @@
   Type Ty = this->getSrc(0)->getType();
   Str << "xchg." << Ty << " ";
   this->dumpSources(Func);
 }
 
 } // end of namespace X86Internal
 
 } // end of namespace Ice
 
 #endif // SUBZERO_SRC_ICEINSTX86BASEIMPL_H