From 4d12d3b70fe91e80852f9867acef327dbfaf77d6 Mon Sep 17 00:00:00 2001
From: Dale Johannesen <dalej@apple.com>
Date: Fri, 26 Mar 2010 19:21:26 +0000
Subject: [PATCH] Debug info shouldn't affect kills.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@99637 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/CodeGen/VirtRegRewriter.cpp | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/lib/CodeGen/VirtRegRewriter.cpp b/lib/CodeGen/VirtRegRewriter.cpp
index 44d5311afd4..70f1d21f112 100644
--- a/lib/CodeGen/VirtRegRewriter.cpp
+++ b/lib/CodeGen/VirtRegRewriter.cpp
@@ -572,6 +572,9 @@ static bool InvalidateRegDef(MachineBasicBlock::iterator I,
 static void UpdateKills(MachineInstr &MI, const TargetRegisterInfo* TRI,
                         BitVector &RegKills,
                         std::vector<MachineOperand*> &KillOps) {
+  // These do not affect kill info at all.
+  if (MI.isDebugValue())
+    return;
   for (unsigned i = 0, e = MI.getNumOperands(); i != e; ++i) {
     MachineOperand &MO = MI.getOperand(i);
     if (!MO.isReg() || !MO.isUse() || MO.isUndef())