[llvm-commits] [llvm] r97861 - /llvm/trunk/lib/CodeGen/MachineCSE.cpp

[Evan Cheng]

Author: evancheng
Date: Fri Mar  5 19:14:19 2010
New Revision: 97861

URL: http://llvm.org/viewvc/llvm-project?rev=97861&view=rev
Log:
Don't update physical register def.

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

Modified: llvm/trunk/lib/CodeGen/MachineCSE.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/CodeGen/MachineCSE.cpp?rev=97861&r1=97860&r2=97861&view=diff
==============================================================================
--- llvm/trunk/lib/CodeGen/MachineCSE.cpp (original)
+++ llvm/trunk/lib/CodeGen/MachineCSE.cpp Fri Mar  5 19:14:19 2010
@@ -238,8 +238,9 @@
         continue;
       unsigned OldReg = MO.getReg();
       unsigned NewReg = CSMI->getOperand(i).getReg();
-      assert(OldReg != NewReg &&
-             TargetRegisterInfo::isVirtualRegister(OldReg) &&
+      if (OldReg == NewReg)
+        continue;
+      assert(TargetRegisterInfo::isVirtualRegister(OldReg) &&
              TargetRegisterInfo::isVirtualRegister(NewReg) &&
              "Do not CSE physical register defs!");
       MRI->replaceRegWith(OldReg, NewReg);