[PATCH] D42311: [SyntheticCounts] Rewrite the code using only graph traits.

[Easwaran Raman via Phabricator via llvm-commits]

eraman created this revision.
eraman added a reviewer: davidxl.
Herald added a subscriber: mehdi_amini.

The intent of this is to allow the code to be used with ThinLTO. In
Thinlink phase, a traditional Callgraph can not be computed even though
all the necessary information (nodes and edges of a call graph) is
available. This is due to the fact that CallGraph class is closely tied
to the IR. This patch first extends GraphTraits to add a CallGraphTraits
graph. This is then used to implement a version of counts propagation
on a generic callgraph.


Repository:
  rL LLVM

https://reviews.llvm.org/D42311

Files:
  include/llvm/Analysis/CallGraph.h
  include/llvm/Analysis/SyntheticCountsUtils.h
  lib/Analysis/SyntheticCountsUtils.cpp
  lib/Transforms/IPO/SyntheticCountsPropagation.cpp

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