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

llvm-svn: 54939

1 files changed, 9 insertions, 0 deletions

diff --git a/llvm/lib/CodeGen/LiveIntervalAnalysis.cpp b/llvm/lib/CodeGen/LiveIntervalAnalysis.cpp
index b70d610d55e..8781c2b7905 100644
--- a/llvm/lib/CodeGen/LiveIntervalAnalysis.cpp
+++ b/llvm/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;
 }