-//===- MSP430RegisterInfo.cpp - MSP430 Register Information ---------------===//
+//===-- MSP430RegisterInfo.cpp - MSP430 Register Information --------------===//
//
// The LLVM Compiler Infrastructure
//
#define DEBUG_TYPE "msp430-reg-info"
+#include "MSP430RegisterInfo.h"
#include "MSP430.h"
#include "MSP430MachineFunctionInfo.h"
-#include "MSP430RegisterInfo.h"
#include "MSP430TargetMachine.h"
#include "llvm/Function.h"
#include "llvm/CodeGen/MachineFrameInfo.h"
#include "llvm/ADT/BitVector.h"
#include "llvm/Support/ErrorHandling.h"
+#define GET_REGINFO_TARGET_DESC
+#include "MSP430GenRegisterInfo.inc"
+
using namespace llvm;
// FIXME: Provide proper call frame setup / destroy opcodes.
MSP430RegisterInfo::MSP430RegisterInfo(MSP430TargetMachine &tm,
const TargetInstrInfo &tii)
- : MSP430GenRegisterInfo(MSP430::ADJCALLSTACKDOWN, MSP430::ADJCALLSTACKUP),
- TM(tm), TII(tii) {
- StackAlign = TM.getFrameInfo()->getStackAlignment();
+ : MSP430GenRegisterInfo(MSP430::PCW), TM(tm), TII(tii) {
+ StackAlign = TM.getFrameLowering()->getStackAlignment();
}
-const unsigned*
+const uint16_t*
MSP430RegisterInfo::getCalleeSavedRegs(const MachineFunction *MF) const {
+ const TargetFrameLowering *TFI = MF->getTarget().getFrameLowering();
const Function* F = MF->getFunction();
- static const unsigned CalleeSavedRegs[] = {
+ static const uint16_t CalleeSavedRegs[] = {
MSP430::FPW, MSP430::R5W, MSP430::R6W, MSP430::R7W,
MSP430::R8W, MSP430::R9W, MSP430::R10W, MSP430::R11W,
0
};
- static const unsigned CalleeSavedRegsFP[] = {
+ static const uint16_t CalleeSavedRegsFP[] = {
MSP430::R5W, MSP430::R6W, MSP430::R7W,
MSP430::R8W, MSP430::R9W, MSP430::R10W, MSP430::R11W,
0
};
- static const unsigned CalleeSavedRegsIntr[] = {
+ static const uint16_t CalleeSavedRegsIntr[] = {
MSP430::FPW, MSP430::R5W, MSP430::R6W, MSP430::R7W,
MSP430::R8W, MSP430::R9W, MSP430::R10W, MSP430::R11W,
MSP430::R12W, MSP430::R13W, MSP430::R14W, MSP430::R15W,
0
};
- static const unsigned CalleeSavedRegsIntrFP[] = {
+ static const uint16_t CalleeSavedRegsIntrFP[] = {
MSP430::R5W, MSP430::R6W, MSP430::R7W,
MSP430::R8W, MSP430::R9W, MSP430::R10W, MSP430::R11W,
MSP430::R12W, MSP430::R13W, MSP430::R14W, MSP430::R15W,
0
};
- if (hasFP(*MF))
+ if (TFI->hasFP(*MF))
return (F->getCallingConv() == CallingConv::MSP430_INTR ?
CalleeSavedRegsIntrFP : CalleeSavedRegsFP);
else
BitVector MSP430RegisterInfo::getReservedRegs(const MachineFunction &MF) const {
BitVector Reserved(getNumRegs());
+ const TargetFrameLowering *TFI = MF.getTarget().getFrameLowering();
- // Mark 4 special registers as reserved.
+ // Mark 4 special registers with subregisters as reserved.
+ Reserved.set(MSP430::PCB);
+ Reserved.set(MSP430::SPB);
+ Reserved.set(MSP430::SRB);
+ Reserved.set(MSP430::CGB);
Reserved.set(MSP430::PCW);
Reserved.set(MSP430::SPW);
Reserved.set(MSP430::SRW);
Reserved.set(MSP430::CGW);
// Mark frame pointer as reserved if needed.
- if (hasFP(MF))
+ if (TFI->hasFP(MF))
Reserved.set(MSP430::FPW);
return Reserved;
}
const TargetRegisterClass *
-MSP430RegisterInfo::getPointerRegClass(unsigned Kind) const {
+MSP430RegisterInfo::getPointerRegClass(const MachineFunction &MF, unsigned Kind)
+ const {
return &MSP430::GR16RegClass;
}
-
-bool MSP430RegisterInfo::hasFP(const MachineFunction &MF) const {
- const MachineFrameInfo *MFI = MF.getFrameInfo();
-
- return (DisableFramePointerElim(MF) ||
- MF.getFrameInfo()->hasVarSizedObjects() ||
- MFI->isFrameAddressTaken());
-}
-
-bool MSP430RegisterInfo::hasReservedCallFrame(const MachineFunction &MF) const {
- return !MF.getFrameInfo()->hasVarSizedObjects();
-}
-
void MSP430RegisterInfo::
eliminateCallFramePseudoInstr(MachineFunction &MF, MachineBasicBlock &MBB,
MachineBasicBlock::iterator I) const {
- if (!hasReservedCallFrame(MF)) {
+ const TargetFrameLowering *TFI = MF.getTarget().getFrameLowering();
+
+ if (!TFI->hasReservedCallFrame(MF)) {
// If the stack pointer can be changed after prologue, turn the
// adjcallstackup instruction into a 'sub SPW, <amt>' and the
// adjcallstackdown instruction into 'add SPW, <amt>'
Amount = (Amount+StackAlign-1)/StackAlign*StackAlign;
MachineInstr *New = 0;
- if (Old->getOpcode() == getCallFrameSetupOpcode()) {
+ if (Old->getOpcode() == TII.getCallFrameSetupOpcode()) {
New = BuildMI(MF, Old->getDebugLoc(),
TII.get(MSP430::SUB16ri), MSP430::SPW)
.addReg(MSP430::SPW).addImm(Amount);
} else {
- assert(Old->getOpcode() == getCallFrameDestroyOpcode());
+ assert(Old->getOpcode() == TII.getCallFrameDestroyOpcode());
// factor out the amount the callee already popped.
uint64_t CalleeAmt = Old->getOperand(1).getImm();
Amount -= CalleeAmt;
MBB.insert(I, New);
}
}
- } else if (I->getOpcode() == getCallFrameDestroyOpcode()) {
+ } else if (I->getOpcode() == TII.getCallFrameDestroyOpcode()) {
// If we are performing frame pointer elimination and if the callee pops
// something off the stack pointer, add it back.
if (uint64_t CalleeAmt = I->getOperand(1).getImm()) {
MachineInstr &MI = *II;
MachineBasicBlock &MBB = *MI.getParent();
MachineFunction &MF = *MBB.getParent();
+ const TargetFrameLowering *TFI = MF.getTarget().getFrameLowering();
DebugLoc dl = MI.getDebugLoc();
while (!MI.getOperand(i).isFI()) {
++i;
int FrameIndex = MI.getOperand(i).getIndex();
- unsigned BasePtr = (hasFP(MF) ? MSP430::FPW : MSP430::SPW);
+ unsigned BasePtr = (TFI->hasFP(MF) ? MSP430::FPW : MSP430::SPW);
int Offset = MF.getFrameInfo()->getObjectOffset(FrameIndex);
// Skip the saved PC
Offset += 2;
- if (!hasFP(MF))
+ if (!TFI->hasFP(MF))
Offset += MF.getFrameInfo()->getStackSize();
else
Offset += 2; // Skip the saved FPW
void
MSP430RegisterInfo::processFunctionBeforeFrameFinalized(MachineFunction &MF)
const {
+ const TargetFrameLowering *TFI = MF.getTarget().getFrameLowering();
+
// Create a frame entry for the FPW register that must be saved.
- if (hasFP(MF)) {
+ if (TFI->hasFP(MF)) {
int FrameIdx = MF.getFrameInfo()->CreateFixedObject(2, -4, true);
(void)FrameIdx;
assert(FrameIdx == MF.getFrameInfo()->getObjectIndexBegin() &&
}
}
-unsigned MSP430RegisterInfo::getRARegister() const {
- return MSP430::PCW;
-}
-
unsigned MSP430RegisterInfo::getFrameRegister(const MachineFunction &MF) const {
- return hasFP(MF) ? MSP430::FPW : MSP430::SPW;
-}
+ const TargetFrameLowering *TFI = MF.getTarget().getFrameLowering();
-int MSP430RegisterInfo::getDwarfRegNum(unsigned RegNum, bool isEH) const {
- llvm_unreachable("Not implemented yet!");
- return 0;
+ return TFI->hasFP(MF) ? MSP430::FPW : MSP430::SPW;
}
-
-#include "MSP430GenRegisterInfo.inc"
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