Chandler Carruth aa6122effe [LCG] Actually test the *basic* edge removal bits (IE, the non-SCC ... bits), and discover that it's totally broken. Yay tests. Boo bug. Fix the basic edge removal so that it works by nulling out the removed edges rather than actually removing them. This leaves the indices valid in the map from callee to index, and preserves some of the locality for iterating over edges. The iterator is made bidirectional to reflect that it now has to skip over null entries, and the skipping logic is layered onto it. As future work, I would like to track essentially the "load factor" of the edge list, and when it falls below a threshold do a compaction. An alternative I considered (and continue to consider) is storing the callees in a doubly linked list where each element of the list is in a set (which is essentially the classical linked-hash-table datastructure). The problem with that approach is that either you need to heap allocate the linked list nodes and use pointers to them, or use a bucket hash table (with even *more* linked list pointer overhead!), etc. It's pretty easy to get 5x overhead for values that are just pointers. So far, I think punching holes in the vector, and periodic compaction is likely to be much more efficient overall in the space/time tradeoff. llvm-svn: 207619		2014-04-30 07:45:27 +00:00
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CFGTest.cpp	Replace OwningPtr<T> with std::unique_ptr<T>.	2014-03-06 05:51:42 +00:00
CMakeLists.txt	[LCG] Add a unittest for the LazyCallGraph. I had a weak moment and	2014-04-23 08:08:49 +00:00
LazyCallGraphTest.cpp	[LCG] Actually test the *basic* edge removal bits (IE, the non-SCC	2014-04-30 07:45:27 +00:00
Makefile	Reimplement isPotentiallyReachable to make nocapture deduction much stronger.	2013-07-27 01:24:00 +00:00
ScalarEvolutionTest.cpp	Move all of the header files which are involved in modelling the LLVM IR	2013-01-02 11:36:10 +00:00