diff options
| author | Dimitry Andric <dim@FreeBSD.org> | 2016-02-21 13:51:43 +0000 |
|---|---|---|
| committer | Dimitry Andric <dim@FreeBSD.org> | 2016-02-21 13:51:43 +0000 |
| commit | 3f4bde29a30d8c43db5cbe8f5541ebc5d1fdc6af (patch) | |
| tree | 87140683fc3fee4e14b3c37e2aa7a4031d473f49 /lib/CodeGen/CalcSpillWeights.cpp | |
| parent | a322a4af1fe8b989fe5d1bbc15de8736a26c03ca (diff) | |
Vendor import of llvm release_38 branch r261369:vendor/llvm/llvm-release_38-r261369
Notes
svn path=/vendor/llvm/dist/; revision=295846
svn path=/vendor/llvm/llvm-release_38-r261369/; revision=295847; tag=vendor/llvm/llvm-release_38-r261369
Diffstat (limited to 'lib/CodeGen/CalcSpillWeights.cpp')
| -rw-r--r-- | lib/CodeGen/CalcSpillWeights.cpp | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/lib/CodeGen/CalcSpillWeights.cpp b/lib/CodeGen/CalcSpillWeights.cpp index abc655ac34ca..26aa46fb6c2a 100644 --- a/lib/CodeGen/CalcSpillWeights.cpp +++ b/lib/CodeGen/CalcSpillWeights.cpp @@ -213,8 +213,11 @@ VirtRegAuxInfo::calculateSpillWeightAndHint(LiveInterval &li) { if (!Spillable) return; - // Mark li as unspillable if all live ranges are tiny. - if (li.isZeroLength(LIS.getSlotIndexes())) { + // Mark li as unspillable if all live ranges are tiny and the interval + // is not live at any reg mask. If the interval is live at a reg mask + // spilling may be required. + if (li.isZeroLength(LIS.getSlotIndexes()) && + !li.isLiveAtIndexes(LIS.getRegMaskSlots())) { li.markNotSpillable(); return; } |