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GlobalsModRef) with CallbackVHs that trigger the same behavior. This is technically more expensive, but in benchmarking some LTO runs, it seems unlikely to even be above the noise floor. The only way I was able to measure the performance of GMR at all was to run nothing else but this one analysis on a linked clang bitcode file. The call graph analysis still took 5x more time than GMR, and this change at most made GMR 2% slower (this is well within the noise, so its hard for me to be sure that this is an actual change). However, in a real LTO run over the same bitcode, the GMR run takes so little time that the pass timers don't measure it. With this, I can remove the last update API from the AliasAnalysis interface, but I'll actually remove the interface hook point in a follow-up commit. Differential Revision: http://reviews.llvm.org/D11324 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@242878 91177308-0d34-0410-b5e6-96231b3b80d8
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