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| author | Jakob Stoklund Olesen <stoklund@2pi.dk> | 2012-05-19 05:25:59 +0000 |
|---|---|---|
| committer | Jakob Stoklund Olesen <stoklund@2pi.dk> | 2012-05-19 05:25:59 +0000 |
| commit | 1dc6d7cbb5affee14a2fc5e7269616f3b7b4b6fa (patch) | |
| tree | 3cfe7f610e697a6e3d16ac55f9c3ce5e193606ec | |
| parent | 67ccb29cec06c85210f334cfbdae144460170cd3 (diff) | |
Eliminate dead code after remat.
This will remove the original def once it has no more uses.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@157104 91177308-0d34-0410-b5e6-96231b3b80d8
| -rw-r--r-- | lib/CodeGen/RegisterCoalescer.cpp | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/lib/CodeGen/RegisterCoalescer.cpp b/lib/CodeGen/RegisterCoalescer.cpp index 3204eff9cb..7126bdd167 100644 --- a/lib/CodeGen/RegisterCoalescer.cpp +++ b/lib/CodeGen/RegisterCoalescer.cpp @@ -870,7 +870,9 @@ bool RegisterCoalescer::reMaterializeTrivialDef(LiveInterval &SrcInt, ++NumReMats; // The source interval can become smaller because we removed a use. - LIS->shrinkToUses(&SrcInt); + LIS->shrinkToUses(&SrcInt, &DeadDefs); + if (!DeadDefs.empty()) + eliminateDeadDefs(); return true; } |