Allow targets to specify register classes whose member registers should not be renamed to break anti-dependencies.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86628 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/AggressiveAntiDepBreaker.h b/lib/CodeGen/AggressiveAntiDepBreaker.h
index c512168..fb5b869 100644
--- a/lib/CodeGen/AggressiveAntiDepBreaker.h
+++ b/lib/CodeGen/AggressiveAntiDepBreaker.h
@@ -23,6 +23,7 @@
#include "llvm/CodeGen/MachineFunction.h"
#include "llvm/CodeGen/MachineRegisterInfo.h"
#include "llvm/CodeGen/ScheduleDAG.h"
+#include "llvm/Target/TargetSubtarget.h"
#include "llvm/Target/TargetRegisterInfo.h"
#include "llvm/ADT/BitVector.h"
#include "llvm/ADT/SmallSet.h"
@@ -112,7 +113,7 @@
/// AllocatableSet - The set of allocatable registers.
/// We'll be ignoring anti-dependencies on non-allocatable registers,
/// because they may not be safe to break.
- const BitVector AllocatableSet;
+ BitVector AllocatableSet;
/// State - The state used to identify and rename anti-dependence
/// registers.
@@ -124,7 +125,8 @@
AggressiveAntiDepState *SavedState;
public:
- AggressiveAntiDepBreaker(MachineFunction& MFi);
+ AggressiveAntiDepBreaker(MachineFunction& MFi,
+ TargetSubtarget::ExcludedRCVector& ExcludedRCs);
~AggressiveAntiDepBreaker();
/// GetMaxTrials - As anti-dependencies are broken, additional