Move some more hooks to TargetFrameInfo

llvm-svn: 119904

1 files changed, 26 insertions, 0 deletions

diff --git a/llvm/lib/Target/TargetFrameInfo.cpp b/llvm/lib/Target/TargetFrameInfo.cpp
index ff9b89a6f4a..dad51b95600 100644
--- a/llvm/lib/Target/TargetFrameInfo.cpp
+++ b/llvm/lib/Target/TargetFrameInfo.cpp
@@ -11,7 +11,12 @@
 //
 //===----------------------------------------------------------------------===//
 
+#include "llvm/Codegen/MachineFrameInfo.h"
+#include "llvm/Codegen/MachineFunction.h"
 #include "llvm/Target/TargetFrameInfo.h"
+#include "llvm/Target/TargetMachine.h"
+#include "llvm/Target/TargetRegisterInfo.h"
+
 #include <cstdlib>
 using namespace llvm;
 
@@ -24,3 +29,24 @@ void
 TargetFrameInfo::getInitialFrameState(std::vector<MachineMove> &Moves) const {
   // Default is to do nothing.
 }
+
+/// getFrameIndexOffset - Returns the displacement from the frame register to
+/// the stack frame of the specified index. This is the default implementation
+/// which is overridden for some targets.
+int TargetFrameInfo::getFrameIndexOffset(const MachineFunction &MF,
+                                         int FI) const {
+  const MachineFrameInfo *MFI = MF.getFrameInfo();
+  return MFI->getObjectOffset(FI) + MFI->getStackSize() -
+    getOffsetOfLocalArea() + MFI->getOffsetAdjustment();
+}
+
+int TargetFrameInfo::getFrameIndexReference(const MachineFunction &MF, int FI,
+                                            unsigned &FrameReg) const {
+  const TargetRegisterInfo *RI = MF.getTarget().getRegisterInfo();
+
+  // By default, assume all frame indices are referenced via whatever
+  // getFrameRegister() says. The target can override this if it's doing
+  // something different.
+  FrameReg = RI->getFrameRegister(MF);
+  return getFrameIndexOffset(MF, FI);
+}