Implements include/exclude register lists for translation.

src/IceTargetLoweringARM32.h

Index: src/IceTargetLoweringARM32.h
diff --git a/src/IceTargetLoweringARM32.h b/src/IceTargetLoweringARM32.h
index 2f342e021af23773fd4aff2cda930053c0982cad..66337a4861cd59139abd5338ae206be069a13076 100644
--- a/src/IceTargetLoweringARM32.h
+++ b/src/IceTargetLoweringARM32.h
@@ -57,7 +57,7 @@ class TargetARM32 : public TargetLowering {
   TargetARM32 &operator=(const TargetARM32 &) = delete;
 
 public:
-  static void staticInit(const ClFlags &Flags);
+  static void staticInit(GlobalContext *Ctx);
   // TODO(jvoung): return a unique_ptr.
   static std::unique_ptr<::Ice::TargetLowering> create(Cfg *Func) {
     return makeUnique<TargetARM32>(Func);
@@ -1019,6 +1019,8 @@ protected:
   VarList PhysicalRegisters[IceType_NUM];
   VarList PreservedGPRs;
   VarList PreservedSRegs;
+  // Mask of registers available to method getRegisterSet().
+  static llvm::SmallBitVector RegisterSetMask;
 
   /// Helper class that understands the Calling Convention and register
   /// assignments. The first few integer type parameters can use r0-r3,