Avoid comparing invalid slot indexes.

llvm-svn: 126922

1 files changed, 6 insertions, 4 deletions

diff --git a/llvm/lib/CodeGen/LiveInterval.cpp b/llvm/lib/CodeGen/LiveInterval.cpp
index a37296f..f2345bc 100644
--- a/llvm/lib/CodeGen/LiveInterval.cpp
+++ b/llvm/lib/CodeGen/LiveInterval.cpp
@@ -33,16 +33,18 @@ using namespace llvm;
 // CompEnd - Compare LiveRange ends.
 namespace {
 struct CompEnd {
-  bool operator()(const LiveRange &A, const LiveRange &B) const {
-    return A.end < B.end;
+  bool operator()(SlotIndex A, const LiveRange &B) const {
+    return A < B.end;
+  }
+  bool operator()(const LiveRange &A, SlotIndex B) const {
+    return A.end < B;
   }
 };
 }
 
 LiveInterval::iterator LiveInterval::find(SlotIndex Pos) {
   assert(Pos.isValid() && "Cannot search for an invalid index");
-  return std::upper_bound(begin(), end(), LiveRange(SlotIndex(), Pos, 0),
-                          CompEnd());
+  return std::upper_bound(begin(), end(), Pos, CompEnd());
 }
 
 /// killedInRange - Return true if the interval has kills in [Start,End).