Revert "[llvm-profdata] Add SaturatingAdd/SaturatingMultiply Helper Functions"

[oota-llvm.git] / include / llvm / Support / MathExtras.h

diff --git a/include/llvm/Support/MathExtras.h b/include/llvm/Support/MathExtras.h
index b7b3c02dcfe76be2cf9572cb4308f4aed4dc9905..2c515bbd242a13b725b37c5ad30ad4478a836418 100644 (file)
--- a/include/llvm/Support/MathExtras.h
+++ b/include/llvm/Support/MathExtras.h
@@ -653,32 +653,6 @@ inline int64_t SignExtend64(uint64_t X, unsigned B) {
   return int64_t(X << (64 - B)) >> (64 - B);
 }
 
   return int64_t(X << (64 - B)) >> (64 - B);
 }
 

-/// \brief Add two unsigned integers, X and Y, of type T.
-/// Clamp the result to the maximum representable value of T on overflow.
-template <typename T>
-typename std::enable_if<std::is_unsigned<T>::value, T>::type
-SaturatingAdd(T X, T Y) {
-  // Hacker's Delight, p. 29
-  T Z = X + Y;
-  if (Z < X || Z < Y)
-    return std::numeric_limits<T>::max();
-  else
-    return Z;
-}
-
-/// \brief Multiply two unsigned integers, X and Y, of type T.
-/// Clamp the result to the maximum representable value of T on overflow.
-template <typename T>
-typename std::enable_if<std::is_unsigned<T>::value, T>::type
-SaturatingMultiply(T X, T Y) {
-  // Hacker's Delight, p. 30
-  T Z = X * Y;
-  if (Y != 0 && Z / Y != X)
-    return std::numeric_limits<T>::max();
-  else
-    return Z;
-}
-

 extern const float huge_valf;
 } // End llvm namespace
 
 extern const float huge_valf;
 } // End llvm namespace