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-rw-r--r--include/llvm/CodeGen/LiveIntervalAnalysis.h7
1 files changed, 7 insertions, 0 deletions
diff --git a/include/llvm/CodeGen/LiveIntervalAnalysis.h b/include/llvm/CodeGen/LiveIntervalAnalysis.h
index 4420e059ea..030b3cfea0 100644
--- a/include/llvm/CodeGen/LiveIntervalAnalysis.h
+++ b/include/llvm/CodeGen/LiveIntervalAnalysis.h
@@ -168,6 +168,13 @@ namespace llvm {
/// below to update aliases.
bool JoinIntervals(LiveInterval &LHS, LiveInterval &RHS);
+ /// SimpleJoin - Attempt to joint the specified interval into this one. The
+ /// caller of this method must guarantee that the RHS only contains a single
+ /// value number and that the RHS is not defined by a copy from this
+ /// interval. This returns false if the intervals are not joinable, or it
+ /// joins them and returns true.
+ bool SimpleJoin(LiveInterval &LHS, LiveInterval &RHS);
+
/// handleRegisterDef - update intervals for a register def
/// (calls handlePhysicalRegisterDef and
/// handleVirtualRegisterDef)