diff options
| author | Dan Gohman <gohman@apple.com> | 2007-07-20 23:17:34 +0000 |
|---|---|---|
| committer | Dan Gohman <gohman@apple.com> | 2007-07-20 23:17:34 +0000 |
| commit | c674a924d4ed62e857bf788d7e0c76c89239b903 (patch) | |
| tree | 95cdab551cadecb8363de87970763a4e90d7af8e /include/llvm/CodeGen/LiveVariables.h | |
| parent | b1d1f7a03518d1fd38fa8e228c2ee750d59e9af8 (diff) | |
Don't assume that only Uses can be kills. Defs are marked as kills initially
when there are no uses. This fixes a dangling-pointer bug, where pointers to
deleted instructions were not removed from kills lists. More info here:
http://lists.cs.uiuc.edu/pipermail/llvmdev/2007-July/009749.html
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40131 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'include/llvm/CodeGen/LiveVariables.h')
| -rw-r--r-- | include/llvm/CodeGen/LiveVariables.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/include/llvm/CodeGen/LiveVariables.h b/include/llvm/CodeGen/LiveVariables.h index ec01556a7e..36b6860cf6 100644 --- a/include/llvm/CodeGen/LiveVariables.h +++ b/include/llvm/CodeGen/LiveVariables.h @@ -229,7 +229,7 @@ public: bool Removed = false; for (unsigned i = 0, e = MI->getNumOperands(); i != e; ++i) { MachineOperand &MO = MI->getOperand(i); - if (MO.isReg() && MO.isUse() && MO.getReg() == reg) { + if (MO.isReg() && MO.isKill() && MO.getReg() == reg) { MO.unsetIsKill(); Removed = true; break; |