Don't allow DBG_VALUE to affect codegen.

llvm-svn: 95889
2010-02-11 18:22:31 +00:00 · 2010-02-11 18:22:31 +00:00 · 12565de705
parent 48ea217fbf
commit 12565de705
1 changed files with 3 additions and 0 deletions
--- a/llvm/lib/CodeGen/TwoAddressInstructionPass.cpp
+++ b/llvm/lib/CodeGen/TwoAddressInstructionPass.cpp
@ -213,6 +213,9 @@ bool TwoAddressInstructionPass::Sink3AddrInstruction(MachineBasicBlock *MBB,
  unsigned NumVisited = 0;
  for (MachineBasicBlock::iterator I = llvm::next(OldPos); I != KillPos; ++I) {
    MachineInstr *OtherMI = I;
+    // DBG_VALUE cannot be counted against the limit.
+    if (OtherMI->isDebugValue())
+      continue;
    if (NumVisited > 30)  // FIXME: Arbitrary limit to reduce compile time cost.
      return false;
    ++NumVisited;