[PATCH] D134068: [TableGen] Add log bang operator

[Michael Maitland via Phabricator via llvm-commits]

michaelmaitland created this revision.
michaelmaitland added reviewers: craig.topper, nhaehnle, barannikov88, kazu.
Herald added subscribers: StephenFan, hiraditya.
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michaelmaitland requested review of this revision.
Herald added a project: LLVM.
Herald added a subscriber: llvm-commits.

This patch adds base 2 logarithm that returns integer result. I initially wanted to name it `!log2`,
but numbers are not permitted in the name. The documentation makes sure to clarify that it is 
base 2 since it is not explicit in the operator name.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D134068

Files:
  llvm/docs/TableGen/ProgRef.rst
  llvm/include/llvm/TableGen/Record.h
  llvm/lib/TableGen/Record.cpp
  llvm/lib/TableGen/TGLexer.cpp
  llvm/lib/TableGen/TGLexer.h
  llvm/lib/TableGen/TGParser.cpp
  llvm/test/TableGen/math.td

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