IR: add "cmpxchg weak" variant to support permitted failure.

[oota-llvm.git] / lib / CodeGen / AggressiveAntiDepBreaker.h

diff --git a/lib/CodeGen/AggressiveAntiDepBreaker.h b/lib/CodeGen/AggressiveAntiDepBreaker.h
index 29b6a10867052d8eb10fc2b352ebf775685cc193..2ab9d89574e49466648604d8699c2a98e74ab221 100644 (file)
--- a/lib/CodeGen/AggressiveAntiDepBreaker.h
+++ b/lib/CodeGen/AggressiveAntiDepBreaker.h
@@ -170,7 +170,8 @@ class RegisterClassInfo;
     void GetPassthruRegs(MachineInstr *MI, std::set<unsigned>& PassthruRegs);
 
     void HandleLastUse(unsigned Reg, unsigned KillIdx, const char *tag,
-                       const char *header =NULL, const char *footer =NULL);
+                       const char *header = nullptr,
+                       const char *footer = nullptr);
 
     void PrescanInstruction(MachineInstr *MI, unsigned Count,
                             std::set<unsigned>& PassthruRegs);