vendor/llvm/llvm-r104832

1 files changed, 6 insertions, 0 deletions

diff --git a/include/llvm/CodeGen/LiveIntervalAnalysis.h b/include/llvm/CodeGen/LiveIntervalAnalysis.h
index 351217ce583df..32fa70970d06c 100644
--- a/include/llvm/CodeGen/LiveIntervalAnalysis.h
+++ b/include/llvm/CodeGen/LiveIntervalAnalysis.h
@@ -303,6 +303,12 @@ namespace llvm {
                            SlotIndex MIIdx,
                            MachineOperand& MO, unsigned MOIdx);
 
+    /// isPartialRedef - Return true if the specified def at the specific index
+    /// is partially re-defining the specified live interval. A common case of
+    /// this is a definition of the sub-register. 
+    bool isPartialRedef(SlotIndex MIIdx, MachineOperand &MO,
+                        LiveInterval &interval);
+
     /// handleVirtualRegisterDef - update intervals for a virtual
     /// register def
     void handleVirtualRegisterDef(MachineBasicBlock *MBB,