diff --git a/lib/CodeGen/RegisterPressure.cpp b/lib/CodeGen/RegisterPressure.cpp
index 015d6735380..52174d8f37e 100644
--- a/lib/CodeGen/RegisterPressure.cpp
+++ b/lib/CodeGen/RegisterPressure.cpp
@@ -680,19 +680,13 @@ void RegPressureTracker::bumpUpwardPressure(const MachineInstr *MI) {
   // Generate liveness for uses.
   for (unsigned i = 0, e = PhysRegOpers.Uses.size(); i < e; ++i) {
     unsigned Reg = PhysRegOpers.Uses[i];
-    if (!hasRegAlias(Reg, LivePhysRegs, TRI)
-        && (findRegAlias(Reg, PhysRegOpers.Defs, TRI)
-            == PhysRegOpers.Defs.end())) {
+    if (!hasRegAlias(Reg, LivePhysRegs, TRI))
       increasePhysRegPressure(Reg);
-    }
   }
   for (unsigned i = 0, e = VirtRegOpers.Uses.size(); i < e; ++i) {
     unsigned Reg = VirtRegOpers.Uses[i];
-    if (!LiveVirtRegs.count(Reg)
-        && (std::find(VirtRegOpers.Defs.begin(), VirtRegOpers.Defs.end(), Reg)
-            != VirtRegOpers.Defs.end())) {
+    if (!LiveVirtRegs.count(Reg))
       increaseVirtRegPressure(Reg);
-    }
   }
 }