commit 1deef27b0ad538e5017675cf1e085002973bbbb2
author Evan Cheng <evan.cheng@apple.com> Thu Apr 29 00:59:34 2010 +0000
committer Evan Cheng <evan.cheng@apple.com> Thu Apr 29 00:59:34 2010 +0000
tree c83d623e254d159558ae125c196b0a2f69bca488
parent 6691a8935c9f2e049ff5eed45ba2894f60108909

Check Reg against zero.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102573 91177308-0d34-0410-b5e6-96231b3b80d8

lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp

diff --git a/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp b/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp
index adb321d..88245de 100644
--- a/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp
+++ b/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp
@@ -222,6 +222,8 @@
   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 {