From 2615c98042e45e566254bb102c898aaf1455d30f Mon Sep 17 00:00:00 2001
From: Alkis Evlogimenos <alkis@evlogimenos.com>
Date: Wed, 14 Jan 2004 00:20:09 +0000
Subject: [PATCH] Fix bug in LiveIntervals::Interval::overlaps and
 LiveIntervals::Interval::liveAt. Both were considering the live ranges closed
 in the end, when they are actually open.

llvm-svn: 10835
---
 llvm/lib/CodeGen/LiveIntervals.cpp | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/llvm/lib/CodeGen/LiveIntervals.cpp b/llvm/lib/CodeGen/LiveIntervals.cpp
index acc32117c00b..fb577228e829 100644
--- a/llvm/lib/CodeGen/LiveIntervals.cpp
+++ b/llvm/lib/CodeGen/LiveIntervals.cpp
@@ -366,7 +366,7 @@ void LiveIntervals::Interval::mergeRangesBackward(Ranges::iterator it)
 bool LiveIntervals::Interval::liveAt(unsigned index) const
 {
     Ranges::const_iterator r = ranges.begin();
-    while (r != ranges.end() && index < r->second) {
+    while (r != ranges.end() && index < (r->second - 1)) {
         if (index >= r->first)
             return true;
         ++r;
@@ -381,7 +381,7 @@ bool LiveIntervals::Interval::overlaps(const Interval& other) const
 
     while (i != ranges.end() && j != other.ranges.end()) {
         if (i->first < j->first) {
-            if (i->second > j->first) {
+            if ((i->second - 1) > j->first) {
                 return true;
             }
             else {
@@ -389,7 +389,7 @@ bool LiveIntervals::Interval::overlaps(const Interval& other) const
             }
         }
         else if (j->first < i->first) {
-            if (j->second > i->first) {
+            if ((j->second - 1) > i->first) {
                 return true;
             }
             else {