Add constant blinding/pooling option for X8632 code translation

src/IceTargetLoweringX8632.h

Index: src/IceTargetLoweringX8632.h
diff --git a/src/IceTargetLoweringX8632.h b/src/IceTargetLoweringX8632.h
index ca26fe185e8bea53b4cbe5ea55ffe102eb810166..d8570f739d763fe62b72cf234fa8f29e10240386 100644
--- a/src/IceTargetLoweringX8632.h
+++ b/src/IceTargetLoweringX8632.h
@@ -560,6 +560,8 @@ protected:
     Context.getLastInserted()->setDestNonKillable();
   }
 
+  bool optimizeScalarMul(Variable *Dest, Operand *Src0, int32_t Src1);
+
   const X86InstructionSet InstructionSet;
   bool IsEbpBasedFrame;
   bool NeedsStackAlignment;
@@ -570,6 +572,14 @@ protected:
   VarList PhysicalRegisters[IceType_NUM];
   static IceString RegNames[];
 
+  // Randomize a given immediate operand
+  Operand *randomizeOrPoolImmediate(Constant *Immediate,
+                                    int32_t RegNum = Variable::NoRegister);
+  OperandX8632Mem *
+  randomizeOrPoolImmediate(OperandX8632Mem *MemOperand,
+                           int32_t RegNum = Variable::NoRegister);
+  bool RandomizationPoolingPaused;
+
 private:
   ~TargetX8632() override {}
   BoolFolding FoldingInfo;