#ifndef LLVM_TARGET_TARGETFRAMEINFO_H
#define LLVM_TARGET_TARGETFRAMEINFO_H
+#include <utility>
+
namespace llvm {
class MachineFunction;
/// The offset to the local area is the offset from the stack pointer on
/// function entry to the first location where function data (local variables,
/// spill locations) can be stored.
-struct TargetFrameInfo {
+class TargetFrameInfo {
+public:
enum StackDirection {
StackGrowsUp, // Adding to the stack increases the stack address
StackGrowsDown // Adding to the stack decreases the stack address
///
int getOffsetOfLocalArea() const { return LocalAreaOffset; }
+ /// getCalleeSaveSpillSlots - This method returns a pointer to an array of
+ /// pairs, that contains an entry for each callee save register that must be
+ /// spilled to a particular stack location if it is spilled.
+ ///
+ /// Each entry in this array contains a <register,offset> pair, indicating the
+ /// fixed offset from the incoming stack pointer that each register should be
+ /// spilled at. If a register is not listed here, the code generator is
+ /// allowed to spill it anywhere it chooses.
+ ///
+ virtual const std::pair<unsigned, int> *
+ getCalleeSaveSpillSlots(unsigned &NumEntries) const {
+ NumEntries = 0;
+ return 0;
+ }
+
//===--------------------------------------------------------------------===//
// These methods provide details of the stack frame used by Sparc, thus they
// are Sparc specific.