[llvm] r254372 - RegisterPressure: If we do not collect dead defs the list must be empty

[Matthias Braun via llvm-commits]

Author: matze
Date: Mon Nov 30 22:20:06 2015
New Revision: 254372

URL: http://llvm.org/viewvc/llvm-project?rev=254372&view=rev
Log:
RegisterPressure: If we do not collect dead defs the list must be empty

Modified:
    llvm/trunk/lib/CodeGen/RegisterPressure.cpp

Modified: llvm/trunk/lib/CodeGen/RegisterPressure.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/CodeGen/RegisterPressure.cpp?rev=254372&r1=254371&r2=254372&view=diff
==============================================================================
--- llvm/trunk/lib/CodeGen/RegisterPressure.cpp (original)
+++ llvm/trunk/lib/CodeGen/RegisterPressure.cpp Mon Nov 30 22:20:06 2015
@@ -734,11 +734,7 @@ void RegPressureTracker::bumpUpwardPress
   // Account for register pressure similar to RegPressureTracker::recede().
   RegisterOperands RegOpers;
   RegOpers.collect(*MI, *TRI, *MRI, /*IgnoreDead=*/true);
-
-  // Boost max pressure for all dead defs together.
-  // Since CurrSetPressure and MaxSetPressure
-  increaseRegPressure(RegOpers.DeadDefs);
-  decreaseRegPressure(RegOpers.DeadDefs);
+  assert(RegOpers.DeadDefs.size() == 0);
 
   // Kill liveness at live defs.
   for (unsigned i = 0, e = RegOpers.Defs.size(); i < e; ++i) {