[llvm-commits] [llvm] r102581 - in /llvm/trunk/lib/CodeGen/SelectionDAG: SelectionDAGBuilder.cpp SelectionDAGISel.cpp

[Evan Cheng]

Author: evancheng
Date: Wed Apr 28 20:23:55 2010
New Revision: 102581

URL: http://llvm.org/viewvc/llvm-project?rev=102581&view=rev
Log:
Avoid emitting a dbg_value machineinstr that's not going to be inserted into entry block.

Modified:
    llvm/trunk/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
    llvm/trunk/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp

Modified: llvm/trunk/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp?rev=102581&r1=102580&r2=102581&view=diff
==============================================================================
--- llvm/trunk/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp (original)
+++ llvm/trunk/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp Wed Apr 28 20:23:55 2010
@@ -3709,6 +3709,8 @@
 
   if (!Reg)
     Reg = FuncInfo.ValueMap[V];
+  if (!Reg)
+    return;
 
   const TargetInstrInfo *TII = DAG.getTarget().getInstrInfo();
   MachineInstrBuilder MIB = BuildMI(MF, getCurDebugLoc(),

Modified: llvm/trunk/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp?rev=102581&r1=102580&r2=102581&view=diff
==============================================================================
--- llvm/trunk/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp (original)
+++ llvm/trunk/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp Wed Apr 28 20:23:55 2010
@@ -222,8 +222,6 @@
   for (unsigned i = 0, e = FuncInfo->ArgDbgValues.size(); i != e; ++i) {
     MachineInstr *MI = FuncInfo->ArgDbgValues[e-i-1];
     unsigned Reg = MI->getOperand(0).getReg();
-    if (!Reg)
-      continue;
     if (TargetRegisterInfo::isPhysicalRegister(Reg))
       EntryMBB->insert(EntryMBB->begin(), MI);
     else {