Add a PhiValuesAnalysis pass to calculate the underlying values of phis
This pass is being added in order to make the information available to BasicAA,
which can't do caching of this information itself, but possibly this information
may be useful for other passes.
Incorporates code based on Daniel Berlin's implementation of Tarjan's algorithm.
Differential Revision: https://reviews.llvm.org/D47893
llvm-svn: 335857
diff --git a/llvm/lib/Analysis/Analysis.cpp b/llvm/lib/Analysis/Analysis.cpp
index 401ce7a..30576cf 100644
--- a/llvm/lib/Analysis/Analysis.cpp
+++ b/llvm/lib/Analysis/Analysis.cpp
@@ -68,6 +68,7 @@
initializeMustExecutePrinterPass(Registry);
initializeObjCARCAAWrapperPassPass(Registry);
initializeOptimizationRemarkEmitterWrapperPassPass(Registry);
+ initializePhiValuesWrapperPassPass(Registry);
initializePostDominatorTreeWrapperPassPass(Registry);
initializeRegionInfoPassPass(Registry);
initializeRegionViewerPass(Registry);