[PATCH] D18974: Make the allocsize attribute useful in LLVM

[George Burgess IV via llvm-commits]

george.burgess.iv created this revision.
george.burgess.iv added reviewers: chandlerc, echristo.
george.burgess.iv added subscribers: llvm-commits, ab, sanjoy, joker.eph, nlopes.

This is the part of the allocsize patch that makes `llvm.objectsize` recognize the `allocsize` attribute introduced by D14993.

This is intended to be committed with D14993, but is split out to hopefully make this easier to review.

(Also, this diff is made assuming D14993 has already landed, so if you want to use this locally, you'll need to apply it on top of the diff in D14993)

http://reviews.llvm.org/D18974

Files:
  lib/Analysis/MemoryBuiltins.cpp
  test/Transforms/InstCombine/allocsize-32.ll
  test/Transforms/InstCombine/allocsize.ll

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