Move enabling the local stack allocation pass into the target where it belongs.

For now it's still a command line option, but the interface to the generic
code doesn't need to know that.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@111942 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 7 insertions, 0 deletions

diff --git a/include/llvm/Target/TargetRegisterInfo.h b/include/llvm/Target/TargetRegisterInfo.h
index 43b6bad..4924998 100644
--- a/include/llvm/Target/TargetRegisterInfo.h
+++ b/include/llvm/Target/TargetRegisterInfo.h
@@ -593,6 +593,13 @@ public:
     return false;
   }
 
+  /// requiresVirtualBaseRegisters - Returns true if the target wants the
+  /// LocalStackAllocation pass to be run and virtual base registers
+  /// used for more efficient stack access.
+  virtual bool requiresVirtualBaseRegisters(const MachineFunction &MF) const {
+    return false;
+  }
+
   /// hasFP - Return true if the specified function should have a dedicated
   /// frame pointer register. For most targets this is true only if the function
   /// has variable sized allocas or if frame pointer elimination is disabled.