1 files changed, 8 insertions, 11 deletions
diff --git a/lib/CodeGen/StackColoring.cpp b/lib/CodeGen/StackColoring.cpp
index ec44b8cb59..c10e3190f6 100644
--- a/lib/CodeGen/StackColoring.cpp
+++ b/lib/CodeGen/StackColoring.cpp
@@ -428,17 +428,14 @@ void StackColoring::calculateLiveIntervals(unsigned NumSlots) {
     }
 
     // Create the interval of the blocks that we previously found to be 'alive'.
-    BitVector Alive = BlockLiveness[MBB].LiveIn;
-    Alive |= BlockLiveness[MBB].LiveOut;
-
-    if (Alive.any()) {
-      for (int pos = Alive.find_first(); pos != -1;
-           pos = Alive.find_next(pos)) {
-        if (!Starts[pos].isValid())
-          Starts[pos] = Indexes->getMBBStartIdx(MBB);
-        if (!Finishes[pos].isValid())
-          Finishes[pos] = Indexes->getMBBEndIdx(MBB);
-      }
+    BlockLifetimeInfo &MBBLiveness = BlockLiveness[MBB];
+    for (int pos = MBBLiveness.LiveIn.find_first(); pos != -1;
+         pos = MBBLiveness.LiveIn.find_next(pos)) {
+      Starts[pos] = Indexes->getMBBStartIdx(MBB);
+    }
+    for (int pos = MBBLiveness.LiveOut.find_first(); pos != -1;
+         pos = MBBLiveness.LiveOut.find_next(pos)) {
+      Finishes[pos] = Indexes->getMBBEndIdx(MBB);
     }
 
     for (unsigned i = 0; i < NumSlots; ++i) {