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Diffstat (limited to 'lib/CodeGen/SplitKit.h')
| -rw-r--r-- | lib/CodeGen/SplitKit.h | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/lib/CodeGen/SplitKit.h b/lib/CodeGen/SplitKit.h index 33c3c07eb4..8bed2a0fb6 100644 --- a/lib/CodeGen/SplitKit.h +++ b/lib/CodeGen/SplitKit.h @@ -185,6 +185,16 @@ public: typedef SmallPtrSet<const MachineBasicBlock*, 16> BlockPtrSet; + /// shouldSplitSingleBlock - Returns true if it would help to create a local + /// live range for the instructions in BI. There is normally no benefit to + /// creating a live range for a single instruction, but it does enable + /// register class inflation if the instruction has a restricted register + /// class. + /// + /// @param BI The block to be isolated. + /// @param SingleInstrs True when single instructions should be isolated. + bool shouldSplitSingleBlock(const BlockInfo &BI, bool SingleInstrs) const; + /// getMultiUseBlocks - Add basic blocks to Blocks that may benefit from /// having CurLI split to a new live interval. Return true if Blocks can be /// passed to SplitEditor::splitSingleBlocks. |