X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=lib%2FCodeGen%2FLiveRegMatrix.cpp;h=1d801ac914ab0458bf089a3df74244c60ea0ee08;hb=8821f3c6b230b92f5be047b1d10905a0ac932658;hp=0ef069f478278ce371290fdaa13be40c1765aecb;hpb=d04a8d4b33ff316ca4cf961e06c9e312eff8e64f;p=oota-llvm.git

diff --git a/lib/CodeGen/LiveRegMatrix.cpp b/lib/CodeGen/LiveRegMatrix.cpp
index 0ef069f4782..1d801ac914a 100644
--- a/lib/CodeGen/LiveRegMatrix.cpp
+++ b/lib/CodeGen/LiveRegMatrix.cpp
@@ -119,9 +119,11 @@ bool LiveRegMatrix::checkRegUnitInterference(LiveInterval &VirtReg,
   if (VirtReg.empty())
     return false;
   CoalescerPair CP(VirtReg.reg, PhysReg, *TRI);
-  for (MCRegUnitIterator Units(PhysReg, TRI); Units.isValid(); ++Units)
-    if (VirtReg.overlaps(LIS->getRegUnit(*Units), CP, *LIS->getSlotIndexes()))
+  for (MCRegUnitIterator Units(PhysReg, TRI); Units.isValid(); ++Units) {
+    const LiveRange &UnitRange = LIS->getRegUnit(*Units);
+    if (VirtReg.overlaps(UnitRange, CP, *LIS->getSlotIndexes()))
       return true;
+  }
   return false;
 }