Implements include/exclude register lists for translation.

src/IceTargetLowering.h

 //===- subzero/src/IceTargetLowering.h - Lowering interface -----*- C++ -*-===//
 //
 //                        The Subzero Code Generator
 //
 // This file is distributed under the University of Illinois Open Source
 // License. See LICENSE.TXT for details.
 //
 //===----------------------------------------------------------------------===//
 ///
 /// \file
@@ skipping 134 matching lines @@
 ///
 ///  namespace X8632 {
 ///    void createTargetLowering(Cfg *Func);
 ///  }
 class TargetLowering {
   TargetLowering() = delete;
   TargetLowering(const TargetLowering &) = delete;
   TargetLowering &operator=(const TargetLowering &) = delete;
 
 public:
-  static void staticInit(const ClFlags &Flags);
+  static void staticInit(GlobalContext *Ctx);
   // Each target must define a public static method:
-  //   static void staticInit(const ClFlags &Flags);
+  //   static void staticInit(GlobalContext *Ctx);
 
   static std::unique_ptr<TargetLowering> createLowering(TargetArch Target,
                                                         Cfg *Func);
 
   virtual std::unique_ptr<Assembler> createAssembler() const = 0;
 
   void translate() {
     switch (Ctx->getFlags().getOptLevel()) {
     case Opt_m1:
       translateOm1();
@@ skipping 124 matching lines @@
   virtual void lowerArguments() = 0;
 
   virtual void initNodeForLowering(CfgNode *) {}
   virtual void addProlog(CfgNode *Node) = 0;
   virtual void addEpilog(CfgNode *Node) = 0;
 
   virtual ~TargetLowering() = default;
 
 protected:
   explicit TargetLowering(Cfg *Func);
+  // Applies command line filters to TypeToRegisterSet array.
+  static void
+  filterTypeToRegisterSet(GlobalContext *Ctx, int32_t NumRegs,
+                          llvm::SmallBitVector TypeToRegisterSet[],
+                          size_t TypeToRegisterSetSize,
+                          std::function<IceString(int32_t)> getRegName);
   virtual void lowerAlloca(const InstAlloca *Inst) = 0;
   virtual void lowerArithmetic(const InstArithmetic *Inst) = 0;
   virtual void lowerAssign(const InstAssign *Inst) = 0;
   virtual void lowerBr(const InstBr *Inst) = 0;
   virtual void lowerCall(const InstCall *Inst) = 0;
   virtual void lowerCast(const InstCast *Inst) = 0;
   virtual void lowerFcmp(const InstFcmp *Inst) = 0;
   virtual void lowerExtractElement(const InstExtractElement *Inst) = 0;
   virtual void lowerIcmp(const InstIcmp *Inst) = 0;
   virtual void lowerInsertElement(const InstInsertElement *Inst) = 0;
@@ skipping 179 matching lines @@
   virtual void lower() {}
 
 protected:
   explicit TargetHeaderLowering(GlobalContext *Ctx) : Ctx(Ctx) {}
   GlobalContext *Ctx;
 };
 
 } // end of namespace Ice
 
 #endif // SUBZERO_SRC_ICETARGETLOWERING_H