Add constant blinding/pooling option for X8632 code translation

src/IceOperand.cpp

Index: src/IceOperand.cpp
diff --git a/src/IceOperand.cpp b/src/IceOperand.cpp
index 2d2c8cf2c3276fbf3ce89d28d116a74cdca3f54b..459d0a07c19101f9ee537b2f63a8473858ce4de9 100644
--- a/src/IceOperand.cpp
+++ b/src/IceOperand.cpp
@@ -491,4 +491,22 @@ Ostream &operator<<(Ostream &Str, const RegWeight &W) {
   return Str;
 }
 
+// =========== Immediate Randomization and Pooling routines ==============
+// Specialization of the template member function for ConstantInteger32
+// TODO(stichnot): try to move this specialization into a target-specific
+// file.
+template <>
+bool ConstantInteger32::shouldBeRandomizedOrPooled(const GlobalContext *Ctx) {
+  uint32_t Threshold = Ctx->getFlags().getRandomizeAndPoolImmediatesThreshold();
+  if (Ctx->getFlags().getRandomizeAndPoolImmediatesOption() == RPI_None)
+    return false;
+  if (getType() != IceType_i32 && getType() != IceType_i16 &&
+      getType() != IceType_i8)
+    return false;
+  // The Following checks if the signed representation of Value is between
+  // -Threshold/2 and +Threshold/2
+  bool largerThanThreshold = Threshold / 2 + Value >= Threshold;
+  return largerThanThreshold;
+}
+
 } // end of namespace Ice