Move some flag-like props from GlobalContext and TargetLowering to ClFlags.

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.
 //
 //===----------------------------------------------------------------------===//
 //
 // This file declares the TargetLowering, LoweringContext, and
@@ skipping 81 matching lines @@
 class TargetLowering {
   TargetLowering() = delete;
   TargetLowering(const TargetLowering &) = delete;
   TargetLowering &operator=(const TargetLowering &) = delete;
 
 public:
   static TargetLowering *createLowering(TargetArch Target, Cfg *Func);
   static std::unique_ptr<Assembler> createAssembler(TargetArch Target,
                                                     Cfg *Func);
   void translate() {
-    switch (Ctx->getOptLevel()) {
+    switch (Ctx->getFlags().getOptLevel()) {
     case Opt_m1:
       translateOm1();
       break;
     case Opt_0:
       translateO0();
       break;
     case Opt_1:
       translateO1();
       break;
     case Opt_2:
@@ skipping 44 matching lines @@
   // provided, a target-specific default type is used.
   virtual Variable *getPhysicalRegister(SizeT RegNum,
                                         Type Ty = IceType_void) = 0;
   // Returns a printable name for the register.
   virtual IceString getRegName(SizeT RegNum, Type Ty) const = 0;
 
   virtual bool hasFramePointer() const { return false; }
   virtual SizeT getFrameOrStackReg() const = 0;
   virtual size_t typeWidthInBytesOnStack(Type Ty) const = 0;
   bool hasComputedFrame() const { return HasComputedFrame; }
-  bool shouldDoNopInsertion() const;
   // Returns true if this function calls a function that has the
   // "returns twice" attribute.
   bool callsReturnsTwice() const { return CallsReturnsTwice; }
   void setCallsReturnsTwice(bool RetTwice) { CallsReturnsTwice = RetTwice; }
   int32_t getStackAdjustment() const { return StackAdjustment; }
   void updateStackAdjustment(int32_t Offset) { StackAdjustment += Offset; }
   void resetStackAdjustment() { StackAdjustment = 0; }
   LoweringContext &getContext() { return Context; }
 
   enum RegSet {
@@ skipping 59 matching lines @@
 
   virtual void doAddressOptLoad() {}
   virtual void doAddressOptStore() {}
   virtual void randomlyInsertNop(float Probability) = 0;
   // This gives the target an opportunity to post-process the lowered
   // expansion before returning.
   virtual void postLower() {}
 
   Cfg *Func;
   GlobalContext *Ctx;
-  const bool RandomizeRegisterAllocation;
   bool HasComputedFrame;
   bool CallsReturnsTwice;
   // StackAdjustment keeps track of the current stack offset from its
   // natural location, as arguments are pushed for a function call.
   int32_t StackAdjustment;
   LoweringContext Context;
 
   // Runtime helper function names
   const static constexpr char *H_bitcast_16xi1_i16 = "__Sz_bitcast_16xi1_i16";
   const static constexpr char *H_bitcast_8xi1_i8 = "__Sz_bitcast_8xi1_i8";
@@ skipping 49 matching lines @@
   virtual void lowerConstants() const = 0;
 
 protected:
   explicit TargetDataLowering(GlobalContext *Ctx) : Ctx(Ctx) {}
   GlobalContext *Ctx;
 };
 
 } // end of namespace Ice
 
 #endif // SUBZERO_SRC_ICETARGETLOWERING_H