Implement a TODO: have the legalizer canonicalize a bunch of operations to

[oota-llvm.git] / lib / Target / MRegisterInfo.cpp

diff --git a/lib/Target/MRegisterInfo.cpp b/lib/Target/MRegisterInfo.cpp
index c8eba554dbca7923fda5ab68522d27739b12872d..920bb5d3af3f66e6d1294d21a7bc1afa16649b36 100644 (file)
--- a/lib/Target/MRegisterInfo.cpp
+++ b/lib/Target/MRegisterInfo.cpp
@@ -13,7 +13,11 @@
 
 #include "llvm/Target/MRegisterInfo.h"
 
-namespace llvm {
+#include "llvm/CodeGen/MachineFunction.h"
+#include "llvm/CodeGen/MachineFrameInfo.h"
+#include "llvm/CodeGen/MachineLocation.h"
+
+using namespace llvm;
 
 MRegisterInfo::MRegisterInfo(const TargetRegisterDesc *D, unsigned NR,
                              regclass_iterator RCB, regclass_iterator RCE,
@@ -40,4 +44,21 @@ std::vector<bool> MRegisterInfo::getAllocatableSet(MachineFunction &MF) const {
   return Allocatable;
 }
 
-} // End llvm namespace
+/// getLocation - This method should return the actual location of a frame
+/// variable given the frame index.  The location is returned in ML.
+/// Subclasses should override this method for special handling of frame
+/// variables and then call MRegisterInfo::getLocation for the default action.
+void MRegisterInfo::getLocation(MachineFunction &MF, unsigned Index,
+                        MachineLocation &ML) const {
+  MachineFrameInfo *MFI = MF.getFrameInfo();
+  ML.set(getFrameRegister(MF),
+         MFI->getObjectOffset(Index) + MFI->getStackSize());
+}
+
+/// getInitialFrameState - Returns a list of machine moves that are assumed
+/// on entry to a function.
+void
+MRegisterInfo::getInitialFrameState(std::vector<MachineMove *> &Moves) const {
+  // Default is to do nothing.
+}
+