[llvm-commits] [llvm] r168633 - /llvm/trunk/lib/CodeGen/MachineRegisterInfo.cpp

[Chad Rosier]

Author: mcrosier
Date: Mon Nov 26 17:37:07 2012
New Revision: 168633

URL: http://llvm.org/viewvc/llvm-project?rev=168633&view=rev
Log:
Add an assertion to ensure freezeReservedRegs() is only ever called once.

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

Modified: llvm/trunk/lib/CodeGen/MachineRegisterInfo.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/CodeGen/MachineRegisterInfo.cpp?rev=168633&r1=168632&r2=168633&view=diff
==============================================================================
--- llvm/trunk/lib/CodeGen/MachineRegisterInfo.cpp (original)
+++ llvm/trunk/lib/CodeGen/MachineRegisterInfo.cpp Mon Nov 26 17:37:07 2012
@@ -305,6 +305,8 @@
 #endif
 
 void MachineRegisterInfo::freezeReservedRegs(const MachineFunction &MF) {
+  assert (!reservedRegsFrozen() &&
+          "freezeReservedRegs should only be called once!");
   ReservedRegs = TRI->getReservedRegs(MF);
   assert(ReservedRegs.size() == TRI->getNumRegs() &&
          "Invalid ReservedRegs vector from target");