Process all uses first before defs to accurately capture register liveness. rdar...

[oota-llvm.git] / lib / CodeGen / SplitKit.cpp

diff --git a/lib/CodeGen/SplitKit.cpp b/lib/CodeGen/SplitKit.cpp
index 6c46d53bf1fccdf68ffc6fb1d863b5359ee8f950..751d604cd3da3e5f93138c9e4a7d0fab52a6287d 100644 (file)
--- a/lib/CodeGen/SplitKit.cpp
+++ b/lib/CodeGen/SplitKit.cpp
@@ -586,7 +586,7 @@ SlotIndex SplitEditor::leaveIntvAtTop(MachineBasicBlock &MBB) {
 void SplitEditor::overlapIntv(SlotIndex Start, SlotIndex End) {
   assert(OpenIdx && "openIntv not called before overlapIntv");
   const VNInfo *ParentVNI = Edit->getParent().getVNInfoAt(Start);
-  assert(ParentVNI == Edit->getParent().getVNInfoAt(End.getPrevSlot()) &&
+  assert(ParentVNI == Edit->getParent().getVNInfoBefore(End) &&
          "Parent changes value in extended range");
   assert(LIS.getMBBFromIndex(Start) == LIS.getMBBFromIndex(End) &&
          "Range cannot span basic blocks");