[all-commits] [llvm/llvm-project] 2cfbda: [IR] Remove CastInst::isCastable since it is not used

[Cullen Rhodes via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 2cfbdaf601049faafb2f1b40f63a3b2bef74a464
      https://github.com/llvm/llvm-project/commit/2cfbdaf601049faafb2f1b40f63a3b2bef74a464
  Author: Cullen Rhodes <cullen.rhodes at arm.com>
  Date:   2020-12-08 (Tue, 08 Dec 2020)

  Changed paths:
    M llvm/include/llvm/IR/InstrTypes.h
    M llvm/lib/IR/Instructions.cpp
    M llvm/unittests/IR/InstructionsTest.cpp

  Log Message:
  -----------
  [IR] Remove CastInst::isCastable since it is not used

It was removed back in 2013 (f63dfbb) by Matt Arsenault but then
reverted since DragonEgg used it, but that project is no longer
maintained.

Reviewed By: ldionne, dexonsmith

Differential Revision: https://reviews.llvm.org/D92571