//
//===----------------------------------------------------------------------===//
-#ifndef X86MACHINEFUNCTIONINFO_H
-#define X86MACHINEFUNCTIONINFO_H
+#ifndef LLVM_LIB_TARGET_X86_X86MACHINEFUNCTIONINFO_H
+#define LLVM_LIB_TARGET_X86_X86MACHINEFUNCTIONINFO_H
#include "llvm/CodeGen/MachineFunction.h"
+#include "llvm/CodeGen/MachineValueType.h"
+#include <vector>
namespace llvm {
virtual void anchor();
/// ForceFramePointer - True if the function is required to use of frame
- /// pointer for reasons other than it containing dynamic allocation or
+ /// pointer for reasons other than it containing dynamic allocation or
/// that FP eliminatation is turned off. For example, Cygwin main function
/// contains stack pointer re-alignment code which requires FP.
bool ForceFramePointer;
/// NumLocalDynamics - Number of local-dynamic TLS accesses.
unsigned NumLocalDynamics;
- /// After the stack pointer has been restore from the base pointer we
- /// use a cached adjusment.
- int64_t BPAdj;
+public:
+ /// Describes a register that needs to be forwarded from the prologue to a
+ /// musttail call.
+ struct Forward {
+ Forward(unsigned VReg, MCPhysReg PReg, MVT VT)
+ : VReg(VReg), PReg(PReg), VT(VT) {}
+ unsigned VReg;
+ MCPhysReg PReg;
+ MVT VT;
+ };
+
+private:
+ /// ForwardedMustTailRegParms - A list of virtual and physical registers
+ /// that must be forwarded to every musttail call.
+ std::vector<Forward> ForwardedMustTailRegParms;
public:
X86MachineFunctionInfo() : ForceFramePointer(false),
VarArgsFPOffset(0),
ArgumentStackSize(0),
NumLocalDynamics(0) {}
-
+
explicit X86MachineFunctionInfo(MachineFunction &MF)
: ForceFramePointer(false),
CalleeSavedFrameSize(0),
VarArgsGPOffset(0),
VarArgsFPOffset(0),
ArgumentStackSize(0),
- NumLocalDynamics(0),
- BPAdj(0) {}
+ NumLocalDynamics(0) {}
- bool getForceFramePointer() const { return ForceFramePointer;}
+ bool getForceFramePointer() const { return ForceFramePointer;}
void setForceFramePointer(bool forceFP) { ForceFramePointer = forceFP; }
unsigned getCalleeSavedFrameSize() const { return CalleeSavedFrameSize; }
unsigned getNumLocalDynamicTLSAccesses() const { return NumLocalDynamics; }
void incNumLocalDynamicTLSAccesses() { ++NumLocalDynamics; }
- /// setBasePtrStackAdjustment - If we're restoring the stack pointer from the
- /// base pointer, due to dynamic stack realignment + VLAs, we cache the
- /// number of bytes initially allocated for the stack frame. In obscure
- /// cases (e.g., tail calls with byval argument and no stack protector), the
- /// stack gets adjusted outside of the prolog, but these shouldn't be
- /// considered when restoring from the base pointer. Currently, this is only
- /// needed for x86.
- void setBasePtrStackAdjustment(int64_t adj) { BPAdj = adj; }
- int64_t getBasePtrStackAdjustment() const { return BPAdj; }
+ std::vector<Forward> &getForwardedMustTailRegParms() {
+ return ForwardedMustTailRegParms;
+ }
};
} // End llvm namespace