diff options
Diffstat (limited to 'lib/CodeGen/SplitKit.h')
-rw-r--r-- | lib/CodeGen/SplitKit.h | 13 |
1 files changed, 9 insertions, 4 deletions
diff --git a/lib/CodeGen/SplitKit.h b/lib/CodeGen/SplitKit.h index 20ac8a1fdc..f1ff501fbd 100644 --- a/lib/CodeGen/SplitKit.h +++ b/lib/CodeGen/SplitKit.h @@ -89,7 +89,10 @@ private: SmallVector<BlockInfo, 8> UseBlocks; /// ThroughBlocks - Block numbers where CurLI is live through without uses. - SmallVector<unsigned, 8> ThroughBlocks; + BitVector ThroughBlocks; + + /// NumThroughBlocks - Number of live-through blocks. + unsigned NumThroughBlocks; SlotIndex computeLastSplitPoint(unsigned Num); @@ -135,9 +138,11 @@ public: /// where CurLI has uses. ArrayRef<BlockInfo> getUseBlocks() { return UseBlocks; } - /// getThroughBlocks - Return an array of block numbers where CurLI is live - /// through without uses. - ArrayRef<unsigned> getThroughBlocks() { return ThroughBlocks; } + /// getNumThroughBlocks - Return the number of through blocks. + unsigned getNumThroughBlocks() const { return NumThroughBlocks; } + + /// isThroughBlock - Return true if CurLI is live through MBB without uses. + bool isThroughBlock(unsigned MBB) const { return ThroughBlocks.test(MBB); } typedef SmallPtrSet<const MachineBasicBlock*, 16> BlockPtrSet; |