Clients of addIntervalForSpills expect the added intervals to be returned sorted by starting index.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@54939 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 9 insertions, 0 deletions

diff --git a/lib/CodeGen/LiveIntervalAnalysis.cpp b/lib/CodeGen/LiveIntervalAnalysis.cpp
index b70d610d55..8781c2b790 100644
--- a/lib/CodeGen/LiveIntervalAnalysis.cpp
+++ b/lib/CodeGen/LiveIntervalAnalysis.cpp
@@ -1596,6 +1596,13 @@ LiveIntervals::handleSpilledImpDefs(const LiveInterval &li, VirtRegMap &vrm,
   }
 }
 
+namespace {
+  struct LISorter {
+    bool operator()(LiveInterval* A, LiveInterval* B) {
+      return A->beginNumber() < B->beginNumber();
+    }
+  };
+}
 
 std::vector<LiveInterval*> LiveIntervals::
 addIntervalsForSpillsFast(const LiveInterval &li,
@@ -1677,6 +1684,8 @@ addIntervalsForSpillsFast(const LiveInterval &li,
   
   SSWeight = HUGE_VALF;
 
+  std::sort(added.begin(), added.end(), LISorter());
+
   return added;
 }