[all-commits] [llvm/llvm-project] a1e8ad: [IR] move helper function to replace undef constan...

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  Branch: refs/heads/master
  Home:   https://github.com/llvm/llvm-project
  Commit: a1e8ad4f2fa79eabd484856a47a56c5c01259051
      https://github.com/llvm/llvm-project/commit/a1e8ad4f2fa79eabd484856a47a56c5c01259051
  Author: Sanjay Patel <spatel at rotateright.com>
  Date:   2019-10-29 (Tue, 29 Oct 2019)

  Changed paths:
    M llvm/include/llvm/IR/Constant.h
    M llvm/lib/IR/Constants.cpp
    M llvm/lib/Transforms/InstCombine/InstCombineShifts.cpp

  Log Message:
  -----------
  [IR] move helper function to replace undef constant (elements) with fixed constants

This is the NFC part of D69519.
We had this functionality locally in instcombine, but it can be used
elsewhere, so hoisting it to Constant class.