Add APInt(numBits, ArrayRef<uint64_t> bigVal) constructor to prevent future ambiguity
errors like the one corrected by r135261.  Migrate all LLVM callers of the old
constructor to the new one.

llvm-svn: 135431
diff --git a/llvm/lib/ExecutionEngine/ExecutionEngine.cpp b/llvm/lib/ExecutionEngine/ExecutionEngine.cpp
index 1b1b498..dee8ea8 100644
--- a/llvm/lib/ExecutionEngine/ExecutionEngine.cpp
+++ b/llvm/lib/ExecutionEngine/ExecutionEngine.cpp
@@ -932,7 +932,7 @@
     // FIXME: Will not trap if loading a signaling NaN.
     uint64_t y[2];
     memcpy(y, Ptr, 10);
-    Result.IntVal = APInt(80, 2, y);
+    Result.IntVal = APInt(80, y);
     break;
   }
   default: