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| author | Jakob Stoklund Olesen <stoklund@2pi.dk> | 2011-07-24 20:33:23 +0000 |
|---|---|---|
| committer | Jakob Stoklund Olesen <stoklund@2pi.dk> | 2011-07-24 20:33:23 +0000 |
| commit | 81d686edbe6effe624add9394673bd571d89bfb7 (patch) | |
| tree | 3fa4f36d400c50524cbdeeb0f57a385e49183bf8 | |
| parent | b09701db9e74298912164d988ddf40bb1b5ec19b (diff) | |
| download | external_llvm-81d686edbe6effe624add9394673bd571d89bfb7.zip external_llvm-81d686edbe6effe624add9394673bd571d89bfb7.tar.gz external_llvm-81d686edbe6effe624add9394673bd571d89bfb7.tar.bz2 | |
Never extend live ranges for <undef> uses.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@135886 91177308-0d34-0410-b5e6-96231b3b80d8
| -rw-r--r-- | lib/CodeGen/SplitKit.cpp | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/lib/CodeGen/SplitKit.cpp b/lib/CodeGen/SplitKit.cpp index 46a43d8..2197046 100644 --- a/lib/CodeGen/SplitKit.cpp +++ b/lib/CodeGen/SplitKit.cpp @@ -952,7 +952,7 @@ void SplitEditor::rewriteAssigned(bool ExtendRanges) { << Idx << ':' << RegIdx << '\t' << *MI); // Extend liveness to Idx if the instruction reads reg. - if (!ExtendRanges) + if (!ExtendRanges || MO.isUndef()) continue; // Skip instructions that don't read Reg. |