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When findReachingDefs() finds that only one value can reach the basic block, just copy the work list of visited blocks directly into the live interval. Sort the block list and use a LiveRangeUpdater to make the bulk add fast. When multiple reaching defs are found, transfer the work list to the updateSSA() work list as before. Also use LiveRangeUpdater in updateLiveIns() following updateSSA(). This makes live interval analysis more than 3x faster on one huge test case. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@175685 91177308-0d34-0410-b5e6-96231b3b80d8
Low Level Virtual Machine (LLVM) ================================ This directory and its subdirectories contain source code for the Low Level Virtual Machine, a toolkit for the construction of highly optimized compilers, optimizers, and runtime environments. LLVM is open source software. You may freely distribute it under the terms of the license agreement found in LICENSE.txt. Please see the documentation provided in docs/ for further assistance with LLVM, and in particular docs/GettingStarted.rst for getting started with LLVM and docs/README.txt for an overview of LLVM's documentation setup. If you're writing a package for LLVM, see docs/Packaging.rst for our suggestions.