Fix a future TwoAddressInstructionPass crash.
No test case, the crash only happens when the default use list order is
changed.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@161627 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/TwoAddressInstructionPass.cpp b/lib/CodeGen/TwoAddressInstructionPass.cpp
index d222744..9a219a6 100644
--- a/lib/CodeGen/TwoAddressInstructionPass.cpp
+++ b/lib/CodeGen/TwoAddressInstructionPass.cpp
@@ -235,7 +235,7 @@
// appropriate location, we can try to sink the current instruction
// past it.
if (!KillMI || KillMI->getParent() != MBB || KillMI == MI ||
- KillMI->isTerminator())
+ KillMI == OldPos || KillMI->isTerminator())
return false;
// If any of the definitions are used by another instruction between the
@@ -278,6 +278,7 @@
}
}
}
+ assert(KillMO && "Didn't find kill");
// Update kill and LV information.
KillMO->setIsKill(false);