Fix incorrect negatives in LiveIntervals::Interval::liveAt().


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10956 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/LiveIntervalAnalysis.cpp b/lib/CodeGen/LiveIntervalAnalysis.cpp
index eb9cf38..d789fbd 100644
--- a/lib/CodeGen/LiveIntervalAnalysis.cpp
+++ b/lib/CodeGen/LiveIntervalAnalysis.cpp
@@ -371,7 +371,7 @@
 bool LiveIntervals::Interval::liveAt(unsigned index) const
 {
     Ranges::const_iterator r = ranges.begin();
-    while (r != ranges.end() && index < (r->second - 1)) {
+    while (r != ranges.end() && index < r->second) {
         if (index >= r->first)
             return true;
         ++r;