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authorJakob Stoklund Olesen <stoklund@2pi.dk>2009-11-11 19:31:31 +0000
committerJakob Stoklund Olesen <stoklund@2pi.dk>2009-11-11 19:31:31 +0000
commit3e20475feebca3bfb29375ac7f3e5acbeb2a95c8 (patch)
treeab6b159d6b6c15d5278703254f21998e6f66e0d1 /test/CodeGen
parenteba4ed9cbb8dc4d478c71b5cbe5b846ac79c105d (diff)
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Fix liveness calculation when splitting critical edges during PHI elimination.
- Edges are split before any phis are eliminated, so the code is SSA. - Create a proper IR BasicBlock for the split edges. - LiveVariables::addNewBlock now has same syntax as MachineDominatorTree::addNewBlock. Algorithm calculates predecessor live-out set rather than successor live-in set. This feature still causes some miscompilations. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86867 91177308-0d34-0410-b5e6-96231b3b80d8
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