Change some explicit type checks into using helper functions.

src/IceTypes.h

 //===- subzero/src/IceTypes.h - Primitive ICE types -------------*- 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 a few properties of the primitive types allowed
@@ skipping 51 matching lines @@
 bool isLoadStoreType(Type Ty);
 
 /// Returns type generated by applying the compare instructions (icmp and fcmp)
 /// to arguments of the given type. Returns IceType_void if compare is not
 /// allowed.
 Type getCompareResultType(Type Ty);
 
 /// Returns the number of bits in a scalar integer type.
 SizeT getScalarIntBitWidth(Type Ty);
 
+// Check if a type is byte sized (slight optimization over typeWidthInBytes).
+inline bool isByteSizedType(Type Ty) {
+  bool result = Ty == IceType_i8 || Ty == IceType_i1;
+  assert(result == (1 == typeWidthInBytes(Ty)));
+  return result;
+}
+
+// Check if Ty is byte sized and specifically i8. Assert that it's not
+// byte sized due to being an i1.
+inline bool isByteSizedArithType(Type Ty) {
+  assert(Ty != IceType_i1);
+  return Ty == IceType_i8;
+}
+
+// Return true if Ty is i32. This asserts that Ty is either i32 or i64.
+inline bool isInt32Asserting32Or64(Type Ty) {
+  bool result = Ty == IceType_i32;
+  assert(result || Ty == IceType_i64);
+  return result;
+}
+
+// Return true if Ty is f32. This asserts that Ty is either f32 or f64.
+inline bool isFloat32Asserting32Or64(Type Ty) {
+  bool result = Ty == IceType_f32;
+  assert(result || Ty == IceType_f64);
+  return result;
+}
+
 template <typename StreamType>
 inline StreamType &operator<<(StreamType &Str, const Type &Ty) {
   Str << typeString(Ty);
   return Str;
 }
 
 } // end of namespace Ice
 
 #endif // SUBZERO_SRC_ICETYPES_H