[llvm-commits] [llvm] r151178 - /llvm/trunk/lib/CodeGen/ScheduleDAGInstrs.cpp

[Andrew Trick]

Author: atrick
Date: Wed Feb 22 12:34:49 2012
New Revision: 151178

URL: http://llvm.org/viewvc/llvm-project?rev=151178&view=rev
Log:
Comment from code review

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

Modified: llvm/trunk/lib/CodeGen/ScheduleDAGInstrs.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/CodeGen/ScheduleDAGInstrs.cpp?rev=151178&r1=151177&r2=151178&view=diff
==============================================================================
--- llvm/trunk/lib/CodeGen/ScheduleDAGInstrs.cpp (original)
+++ llvm/trunk/lib/CodeGen/ScheduleDAGInstrs.cpp Wed Feb 22 12:34:49 2012
@@ -362,6 +362,7 @@
   unsigned Reg = MI->getOperand(OperIdx).getReg();
 
   // SSA defs do not have output/anti dependencies.
+  // The current operand is a def, so we have at least one.
   if (llvm::next(MRI.def_begin(Reg)) == MRI.def_end())
     return;