[X86] Implement the support for shrink-wrapping.

[oota-llvm.git] / lib / Target / X86 / X86FrameLowering.h

diff --git a/lib/Target/X86/X86FrameLowering.h b/lib/Target/X86/X86FrameLowering.h
index eeeda75d33783114ac3b66f632574ac35bda95c6..5d03b4db45c1e21e276462fd3b3fa7237487fa4e 100644 (file)
--- a/lib/Target/X86/X86FrameLowering.h
+++ b/lib/Target/X86/X86FrameLowering.h
@@ -96,8 +96,15 @@ public:
                            const TargetInstrInfo &TII,
                            const TargetRegisterInfo &TRI);
 
-  /// Check that LEA can be use on SP in a prologue sequence for \p MF.
-  bool useLEAForSPInProlog(const MachineFunction &MF) const;
+  /// Check that LEA can be used on SP in an epilogue sequence for \p MF.
+  bool canUseLEAForSPInEpilogue(const MachineFunction &MF) const;
+
+  /// Check whether or not the given \p MBB can be used as a epilogue
+  /// for the target.
+  /// The epilogue will be inserted before the first terminator of that block.
+  /// This method is used by the shrink-wrapping pass to decide if
+  /// \p MBB will be correctly handled by the target.
+  bool canUseAsEpilogue(const MachineBasicBlock &MBB) const override;
 
 private:
   /// convertArgMovsToPushes - This method tries to convert a call sequence