LiveIntervalAnalysis: Factor common code into splitSeparateComponents; NFC

llvm-svn: 248241

2 files changed, 10 insertions, 6 deletions

diff --git a/llvm/include/llvm/CodeGen/LiveInterval.h b/llvm/include/llvm/CodeGen/LiveInterval.h
index cadd219dc69..bec4c6bd0f2 100644
--- a/llvm/include/llvm/CodeGen/LiveInterval.h
+++ b/llvm/include/llvm/CodeGen/LiveInterval.h
@@ -853,12 +853,12 @@ namespace llvm {
     /// the equivalence class assigned the VNI.
     unsigned getEqClass(const VNInfo *VNI) const { return EqClass[VNI->id]; }
 
-    /// Distribute - Distribute values in LIV[0] into a separate LiveInterval
-    /// for each connected component. LIV must have a LiveInterval for each
-    /// connected component. The LiveIntervals in Liv[1..] must be empty.
-    /// Instructions using LIV[0] are rewritten.
-    void Distribute(LiveInterval *LIV[], MachineRegisterInfo &MRI);
-
+    /// Distribute values in \p LI into a separate LiveIntervals
+    /// for each connected component. LIV must have an empty LiveInterval for
+    /// each additional connected component. The first connected component is
+    /// left in \p LI.
+    void Distribute(LiveInterval &LI, LiveInterval *LIV[],
+                    MachineRegisterInfo &MRI);
   };
 
 }
diff --git a/llvm/include/llvm/CodeGen/LiveIntervalAnalysis.h b/llvm/include/llvm/CodeGen/LiveIntervalAnalysis.h
index 5996f8dd334..137e9658750 100644
--- a/llvm/include/llvm/CodeGen/LiveIntervalAnalysis.h
+++ b/llvm/include/llvm/CodeGen/LiveIntervalAnalysis.h
@@ -402,6 +402,10 @@ extern cl::opt<bool> UseSegmentSetForPhysRegs;
     /// that start at position @p Pos.
     void removeVRegDefAt(LiveInterval &LI, SlotIndex Pos);
 
+    /// Split separate components in LiveInterval \p LI into separate intervals.
+    void splitSeparateComponents(LiveInterval &LI,
+                                 SmallVectorImpl<LiveInterval*> &SplitLIs);
+
   private:
     /// Compute live intervals for all virtual registers.
     void computeVirtRegs();