[PATCH] D134725: [ADT] Add support for more formats in APFixedPoint

[Tyker via Phabricator via llvm-commits]

Tyker created this revision.
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Prior to this patch APFixedPoint only support semantics where the LsbWeight is is negative and the Width is at least as large as -LsbWeight.
This patch remove both those requirements.
for example:
with LsbWeight = 2, 12 would be represented as 3.
with LsbWeight = -2, 12 would be represented as 48.


https://reviews.llvm.org/D134725

Files:
  llvm/include/llvm/ADT/APFixedPoint.h
  llvm/include/llvm/ADT/APInt.h
  llvm/include/llvm/ADT/APSInt.h
  llvm/lib/Support/APFixedPoint.cpp
  llvm/unittests/ADT/APFixedPointTest.cpp

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