[PATCH] D13829: WIP: clean up the way optional Function data is managed

[Vedant Kumar via llvm-commits]

vsk updated this revision to Diff 37793.
vsk added a comment.

- Disallow nullptr argument to setHungoffOperand().


http://reviews.llvm.org/D13829

Files:
  include/llvm/IR/Function.h
  include/llvm/IR/User.h
  lib/Bitcode/Writer/ValueEnumerator.cpp
  lib/IR/AsmWriter.cpp
  lib/IR/Function.cpp
  lib/IR/LLVMContextImpl.h
  lib/IR/TypeFinder.cpp
  lib/Transforms/IPO/GlobalDCE.cpp
  test/Bitcode/compatibility-3.6.ll
  test/Bitcode/compatibility-3.6.ll.bc
  test/Bitcode/compatibility-3.7.ll
  test/Bitcode/compatibility-3.7.ll.bc
  test/Bitcode/compatibility.ll
  test/Bitcode/tailcall.ll

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