[PATCH] D139120: APFloat: Add isSmallestNormalized predicate function

[Matt Arsenault via Phabricator via llvm-commits]

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It was annoying to write the check for this in the one case I added,
and I'm planning on adding another, so add a convenient PatternMatch
like for other special case values.

      

I have no idea what is going on in the DoubleAPFloat case, I reversed
this from the makeSmallestNormalized test. Also could implement this
as *this == getSmallestNormalized() for less code, but this avoids the
construction of a temporary APFloat copy and follows the style of the
other functions.


https://reviews.llvm.org/D139120

Files:
  llvm/include/llvm/ADT/APFloat.h
  llvm/include/llvm/IR/PatternMatch.h
  llvm/lib/Support/APFloat.cpp
  llvm/unittests/ADT/APFloatTest.cpp
  llvm/unittests/IR/PatternMatch.cpp

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