Implements include/exclude register lists for translation.

src/IceTargetLowering.h

Index: src/IceTargetLowering.h
diff --git a/src/IceTargetLowering.h b/src/IceTargetLowering.h
index 799872e1648718d6e55829ebd031fdb1e697f300..8c14481ea17ef44cf10dc6b39f68cacfc34153cf 100644
--- a/src/IceTargetLowering.h
+++ b/src/IceTargetLowering.h
@@ -152,9 +152,9 @@ class TargetLowering {
   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);
@@ -299,6 +299,10 @@ public:
 
 protected:
   explicit TargetLowering(Cfg *Func);
+  static llvm::SmallBitVector
+  getRegisterSetMask(GlobalContext *Ctx, SizeT NumRegs, SizeT NumRegClasses,
+                     std::function<SizeT(int32_t)> RegClassFcn,
+                     std::function<IceString(int32_t)> RegNameFcn);
   virtual void lowerAlloca(const InstAlloca *Inst) = 0;
   virtual void lowerArithmetic(const InstArithmetic *Inst) = 0;
   virtual void lowerAssign(const InstAssign *Inst) = 0;