[PATCH] D13035: LiveIntervalAnalysis: Avoid multiple connected liveness components
Matthias Braun via llvm-commits
llvm-commits at lists.llvm.org
Mon Sep 21 16:45:25 PDT 2015
MatzeB created this revision.
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We may have subregister defs which are unused but not discovered and
cleaned up prior to liveness analysis. This creates multiple connected
components in the resultsing live range which are forbidden in the
MachineVerifier because they would unnecesarily constrain the register
allocation. Rewrite those dead definitions to define a newly created
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