Debug info shouldn't affect kills.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@99637 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/CodeGen/VirtRegRewriter.cpp b/lib/CodeGen/VirtRegRewriter.cpp
index 44d5311afd44da8a4280b4e5581de1e2ab01ae2d..70f1d21f112ec249001693742672c7ff3e35ce22 100644 (file)
--- 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())