[SubZero] Fix f64 to/from i64 moves

crosstest/test_cast.cpp

 //===- subzero/crosstest/test_cast.cpp - Cast operator tests --------------===//
 //
 //                        The Subzero Code Generator
 //
 // This file is distributed under the University of Illinois Open Source
 // License. See LICENSE.TXT for details.
 //
 //===----------------------------------------------------------------------===//
 //
 // Implementation for crosstesting cast operations.
@@ skipping 10 matching lines @@
 template <typename FromType, typename ToType>
 ToType __attribute__((noinline)) cast(FromType a) {
   return (ToType)a;
 }
 
 template <typename FromType, typename ToType>
 ToType __attribute__((noinline)) castBits(FromType a) {
   return *(ToType *)&a;
 }
 
+#ifdef MIPS32
+template <typename FromType, typename ToType>
+ToType __attribute__((noinline)) cast(int i, FromType a) {
+  (void) i;
+  return (ToType)a;
+}
+
+template <typename FromType, typename ToType>
+ToType __attribute__((noinline)) castBits(int i, FromType a) {
+  (void) i;
+  return *(ToType *)&a;
+}
+#endif
+
 // The purpose of the following sets of templates is to force
 // cast<A,B>() to be instantiated in the resulting bitcode file for
 // all <A,B>, so that they can be called from the driver.
 template <typename ToType> class Caster {
   static ToType f(bool a) { return cast<bool, ToType>(a); }
   static ToType f(myint8_t a) { return cast<myint8_t, ToType>(a); }
   static ToType f(uint8_t a) { return cast<uint8_t, ToType>(a); }
   static ToType f(int16_t a) { return cast<int16_t, ToType>(a); }
   static ToType f(uint16_t a) { return cast<uint16_t, ToType>(a); }
   static ToType f(int32_t a) { return cast<int32_t, ToType>(a); }
   static ToType f(uint32_t a) { return cast<uint32_t, ToType>(a); }
   static ToType f(int64 a) { return cast<int64, ToType>(a); }
   static ToType f(uint64 a) { return cast<uint64, ToType>(a); }
   static ToType f(float a) { return cast<float, ToType>(a); }
   static ToType f(double a) { return cast<double, ToType>(a); }
+
+#ifdef MIPS32
+  static ToType f(int i, myint8_t a) { return cast<myint8_t, ToType>(i, a); }
+  static ToType f(int i, uint8_t a) { return cast<uint8_t, ToType>(i, a); }
+  static ToType f(int i, int16_t a) { return cast<int16_t, ToType>(i, a); }
+  static ToType f(int i, uint16_t a) { return cast<uint16_t, ToType>(i, a); }
+  static ToType f(int i, int32_t a) { return cast<int32_t, ToType>(i, a); }
+  static ToType f(int i, uint32_t a) { return cast<uint32_t, ToType>(i, a); }
+  static ToType f(int i, int64 a) { return cast<int64, ToType>(i, a); }
+  static ToType f(int i, uint64 a) { return cast<uint64, ToType>(i, a); }
+  static ToType f(int i, float a) { return cast<float, ToType>(i, a); }
+  static ToType f(int i, double a) { return cast<double, ToType>(i, a); }
+#endif
 };
 
 // Comment out the definition of Caster<bool> because clang compiles
 // casts to bool using icmp instead of the desired cast instruction.
 // The corrected definitions are in test_cast_to_u1.ll.
 
 // template class Caster<bool>;
 
 template class Caster<myint8_t>;
 template class Caster<uint8_t>;
 template class Caster<int16_t>;
 template class Caster<uint16_t>;
 template class Caster<int32_t>;
 template class Caster<uint32_t>;
 template class Caster<int64>;
 template class Caster<uint64>;
 template class Caster<float>;
 template class Caster<double>;
 
 // This function definition forces castBits<A,B>() to be instantiated
 // in the resulting bitcode file for the 4 relevant <A,B>
 // combinations, so that they can be called from the driver.
 double makeBitCasters() {
   double Result = 0;
   Result += castBits<uint32_t, float>(0);
   Result += castBits<uint64, double>(0);
   Result += castBits<float, uint32_t>(0);
   Result += castBits<double, uint64>(0);
+#ifdef MIPS32
+  Result += castBits<uint32_t, float>(1, 0);
+  Result += castBits<uint64, double>(1, 0);
+  Result += castBits<float, uint32_t>(1, 0);
+  Result += castBits<double, uint64>(1, 0);
+#endif
   return Result;
 }