diff options
| -rw-r--r-- | lib/CodeGen/RegAllocGreedy.cpp | 14 |
1 files changed, 6 insertions, 8 deletions
diff --git a/lib/CodeGen/RegAllocGreedy.cpp b/lib/CodeGen/RegAllocGreedy.cpp index 195e4837c8..3434a92bf3 100644 --- a/lib/CodeGen/RegAllocGreedy.cpp +++ b/lib/CodeGen/RegAllocGreedy.cpp @@ -649,8 +649,6 @@ void RAGreedy::growRegion(GlobalSplitCandidate &Cand, for (;;) { ArrayRef<unsigned> NewBundles = SpillPlacer->getRecentPositive(); - if (NewBundles.empty()) - break; // Find new through blocks in the periphery of PrefRegBundles. for (int i = 0, e = NewBundles.size(); i != e; ++i) { unsigned Bundle = NewBundles[i]; @@ -670,12 +668,12 @@ void RAGreedy::growRegion(GlobalSplitCandidate &Cand, } } // Any new blocks to add? - if (ActiveBlocks.size() > AddedTo) { - ArrayRef<unsigned> Add(&ActiveBlocks[AddedTo], - ActiveBlocks.size() - AddedTo); - addThroughConstraints(Intf, Add); - AddedTo = ActiveBlocks.size(); - } + if (ActiveBlocks.size() == AddedTo) + break; + addThroughConstraints(Intf, + ArrayRef<unsigned>(ActiveBlocks).slice(AddedTo)); + AddedTo = ActiveBlocks.size(); + // Perhaps iterating can enable more bundles? SpillPlacer->iterate(); } |