1 files changed, 36 insertions, 4 deletions
diff --git a/contrib/llvm/include/llvm/Target/TargetFrameLowering.h b/contrib/llvm/include/llvm/Target/TargetFrameLowering.h
index f17640f..0e31724 100644
--- a/contrib/llvm/include/llvm/Target/TargetFrameLowering.h
+++ b/contrib/llvm/include/llvm/Target/TargetFrameLowering.h
@@ -130,21 +130,26 @@ public:
 
   /// emitProlog/emitEpilog - These methods insert prolog and epilog code into
   /// the function.
-  virtual void emitPrologue(MachineFunction &MF) const = 0;
+  virtual void emitPrologue(MachineFunction &MF,
+                            MachineBasicBlock &MBB) const = 0;
   virtual void emitEpilogue(MachineFunction &MF,
                             MachineBasicBlock &MBB) const = 0;
 
   /// Adjust the prologue to have the function use segmented stacks. This works
   /// by adding a check even before the "normal" function prologue.
-  virtual void adjustForSegmentedStacks(MachineFunction &MF) const { }
+  virtual void adjustForSegmentedStacks(MachineFunction &MF,
+                                        MachineBasicBlock &PrologueMBB) const {}
 
   /// Adjust the prologue to add Erlang Run-Time System (ERTS) specific code in
   /// the assembly prologue to explicitly handle the stack.
-  virtual void adjustForHiPEPrologue(MachineFunction &MF) const { }
+  virtual void adjustForHiPEPrologue(MachineFunction &MF,
+                                     MachineBasicBlock &PrologueMBB) const {}
 
   /// Adjust the prologue to add an allocation at a fixed offset from the frame
   /// pointer.
-  virtual void adjustForFrameAllocatePrologue(MachineFunction &MF) const { }
+  virtual void
+  adjustForFrameAllocatePrologue(MachineFunction &MF,
+                                 MachineBasicBlock &PrologueMBB) const {}
 
   /// spillCalleeSavedRegisters - Issues instruction(s) to spill all callee
   /// saved registers and returns true if it isn't possible / profitable to do
@@ -168,6 +173,9 @@ public:
     return false;
   }
 
+  /// Return true if the target needs to disable frame pointer elimination.
+  virtual bool noFramePointerElim(const MachineFunction &MF) const;
+
   /// 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.
@@ -249,6 +257,30 @@ public:
     llvm_unreachable("Call Frame Pseudo Instructions do not exist on this "
                      "target!");
   }
+
+  /// Check whether or not the given \p MBB can be used as a prologue
+  /// for the target.
+  /// The prologue will be inserted first in this basic block.
+  /// This method is used by the shrink-wrapping pass to decide if
+  /// \p MBB will be correctly handled by the target.
+  /// As soon as the target enable shrink-wrapping without overriding
+  /// this method, we assume that each basic block is a valid
+  /// prologue.
+  virtual bool canUseAsPrologue(const MachineBasicBlock &MBB) const {
+    return true;
+  }
+
+  /// 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.
+  /// As soon as the target enable shrink-wrapping without overriding
+  /// this method, we assume that each basic block is a valid
+  /// epilogue.
+  virtual bool canUseAsEpilogue(const MachineBasicBlock &MBB) const {
+    return true;
+  }
 };
 
 } // End llvm namespace