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-rw-r--r--include/llvm/CodeGen/LiveVariables.h6
1 files changed, 6 insertions, 0 deletions
diff --git a/include/llvm/CodeGen/LiveVariables.h b/include/llvm/CodeGen/LiveVariables.h
index 454205afbe..b0d11cc4d9 100644
--- a/include/llvm/CodeGen/LiveVariables.h
+++ b/include/llvm/CodeGen/LiveVariables.h
@@ -167,6 +167,12 @@ public:
//===--------------------------------------------------------------------===//
// API to update live variable information
+ /// instructionChanged - When the address of an instruction changes, this
+ /// method should be called so that live variables can update its internal
+ /// data structures. This removes the records for OldMI, transfering them to
+ /// the records for NewMI.
+ void instructionChanged(MachineInstr *OldMI, MachineInstr *NewMI);
+
/// addVirtualRegisterKilled - Add information about the fact that the
/// specified register is killed after being used by the specified
/// instruction.