[PATCH] Add a simple helper function to create a 64-bit integer.

[Reid Kleckner]

Closed by commit rL209777 (authored by @rnk).

http://reviews.llvm.org/D3941

Files:
  llvm/trunk/include/llvm/Support/MathExtras.h

Index: llvm/trunk/include/llvm/Support/MathExtras.h
===================================================================
--- llvm/trunk/include/llvm/Support/MathExtras.h
+++ llvm/trunk/include/llvm/Support/MathExtras.h
@@ -258,6 +258,12 @@
   return static_cast<uint32_t>(Value);
 }
 
+/// Make_64 - This functions makes a 64-bit integer from a high / low pair of
+///           32-bit integers.
+inline uint64_t Make_64(uint32_t High, uint32_t Low) {
+  return ((uint64_t)High << 32) | (uint64_t)Low;
+}
+
 /// isInt - Checks if an integer fits into the given bit width.
 template<unsigned N>
 inline bool isInt(int64_t x) {
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