two worklists: for nodes whose locations are block edges with loop terminators
and another for nodes with all other locations. We only dequeue from the loop
worklist when the other is empty. Exploration of the graph is still in
reverse-BFS.
llvm-svn: 49791
lib dir and move all the libraries into it. This follows the main
llvm tree, and allows the libraries to be built in parallel. The
top level now enforces that all the libs are built before Driver,
but we don't care what order the libs are built in. This speeds
up parallel builds, particularly incremental ones.
llvm-svn: 48402
Ted Kremenek