[llvm-commits] [llvm] r130718 - /llvm/trunk/lib/CodeGen/RegisterScavenging.cpp

[Jakob Stoklund Olesen]

Author: stoklund
Date: Mon May  2 15:36:53 2011
New Revision: 130718

URL: http://llvm.org/viewvc/llvm-project?rev=130718&view=rev
Log:
Handle <def,undef> in the second loop as well.

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

Modified: llvm/trunk/lib/CodeGen/RegisterScavenging.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/CodeGen/RegisterScavenging.cpp?rev=130718&r1=130717&r2=130718&view=diff
==============================================================================
--- llvm/trunk/lib/CodeGen/RegisterScavenging.cpp (original)
+++ llvm/trunk/lib/CodeGen/RegisterScavenging.cpp Mon May  2 15:36:53 2011
@@ -181,12 +181,14 @@
   // Verify uses and defs.
   for (unsigned i = 0, e = MI->getNumOperands(); i != e; ++i) {
     const MachineOperand &MO = MI->getOperand(i);
-    if (!MO.isReg() || MO.isUndef())
+    if (!MO.isReg())
       continue;
     unsigned Reg = MO.getReg();
     if (!Reg || isReserved(Reg))
       continue;
     if (MO.isUse()) {
+      if (MO.isUndef())
+        continue;
       if (!isUsed(Reg)) {
         // Check if it's partial live: e.g.
         // D0 = insert_subreg D0<undef>, S0