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-rw-r--r--include/llvm/Target/TargetFrameLowering.h14
1 files changed, 14 insertions, 0 deletions
diff --git a/include/llvm/Target/TargetFrameLowering.h b/include/llvm/Target/TargetFrameLowering.h
index bfddd0601794..277bd98d371c 100644
--- a/include/llvm/Target/TargetFrameLowering.h
+++ b/include/llvm/Target/TargetFrameLowering.h
@@ -142,6 +142,10 @@ public:
/// the assembly prologue to explicitly handle the stack.
virtual void adjustForHiPEPrologue(MachineFunction &MF) const { }
+ /// Adjust the prologue to add an allocation at a fixed offset from the frame
+ /// pointer.
+ virtual void adjustForFrameAllocatePrologue(MachineFunction &MF) const { }
+
/// spillCalleeSavedRegisters - Issues instruction(s) to spill all callee
/// saved registers and returns true if it isn't possible / profitable to do
/// so by issuing a series of store instructions via
@@ -199,6 +203,16 @@ public:
virtual int getFrameIndexReference(const MachineFunction &MF, int FI,
unsigned &FrameReg) const;
+ /// Same as above, except that the 'base register' will always be RSP, not
+ /// RBP on x86. This is used exclusively for lowering STATEPOINT nodes.
+ /// TODO: This should really be a parameterizable choice.
+ virtual int getFrameIndexReferenceFromSP(const MachineFunction &MF, int FI,
+ unsigned &FrameReg) const {
+ // default to calling normal version, we override this on x86 only
+ llvm_unreachable("unimplemented for non-x86");
+ return 0;
+ }
+
/// processFunctionBeforeCalleeSavedScan - This method is called immediately
/// before PrologEpilogInserter scans the physical registers used to determine
/// what callee saved registers should be spilled. This method is optional.