diff options
Diffstat (limited to 'llvm/lib/CodeGen/SplitKit.h')
| -rw-r--r-- | llvm/lib/CodeGen/SplitKit.h | 13 |
1 files changed, 11 insertions, 2 deletions
diff --git a/llvm/lib/CodeGen/SplitKit.h b/llvm/lib/CodeGen/SplitKit.h index c00b8d366a2..cd6a3065b93 100644 --- a/llvm/lib/CodeGen/SplitKit.h +++ b/llvm/lib/CodeGen/SplitKit.h @@ -273,8 +273,17 @@ private: /// The new value has no live ranges anywhere. ValueMap Values; - /// LRCalc - Cache for computing live ranges and SSA update. - LiveRangeCalc LRCalc; + /// LRCalc - Cache for computing live ranges and SSA update. Each instance + /// can only handle non-overlapping live ranges, so use a separate + /// LiveRangeCalc instance for the complement interval when in spill mode. + LiveRangeCalc LRCalc[2]; + + /// getLRCalc - Return the LRCalc to use for RegIdx. In spill mode, the + /// complement interval can overlap the other intervals, so it gets its own + /// LRCalc instance. When not in spill mode, all intervals can share one. + LiveRangeCalc &getLRCalc(unsigned RegIdx) { + return LRCalc[SpillMode != SM_Partition && RegIdx != 0]; + } /// defValue - define a value in RegIdx from ParentVNI at Idx. /// Idx does not have to be ParentVNI->def, but it must be contained within |
