[PATCH] Add getSizeInBits function to the APFloat class

[hfinkel at anl.gov]

================
Comment at: lib/Support/APFloat.cpp:3374
@@ +3373,3 @@
+  if (&Sem == (const llvm::fltSemantics*)&IEEEhalf)
+    return 16;
+
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Why not just add this number to the fltSemantics structure itself?

http://reviews.llvm.org/D8413

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