#include "llvm/CodeGen/MachineFunctionPass.h"
#include "llvm/CodeGen/MachineInstrBuilder.h"
#include "llvm/CodeGen/MachineRegisterInfo.h"
+#include "llvm/CodeGen/PseudoSourceValue.h"
#include "llvm/CodeGen/RegisterScavenging.h"
#include "llvm/IR/Function.h"
#include "llvm/IR/Type.h"
using namespace llvm;
-HexagonRegisterInfo::HexagonRegisterInfo(HexagonSubtarget &st,
- const HexagonInstrInfo &tii)
+HexagonRegisterInfo::HexagonRegisterInfo(HexagonSubtarget &st)
: HexagonGenRegisterInfo(Hexagon::R31),
- Subtarget(st),
- TII(tii) {
+ Subtarget(st) {
}
const uint16_t* HexagonRegisterInfo::getCalleeSavedRegs(const MachineFunction
// Addressable stack objects are accessed using neg. offsets from %fp.
MachineFunction &MF = *MI.getParent()->getParent();
+ const HexagonInstrInfo &TII =
+ *static_cast<const HexagonInstrInfo*>(MF.getTarget().getInstrInfo());
int Offset = MF.getFrameInfo()->getObjectOffset(FrameIndex);
MachineFrameInfo &MFI = *MF.getFrameInfo();
MI.getOperand(FIOperandNum).ChangeToRegister(resReg, false, false,true);
MI.getOperand(FIOperandNum+1).ChangeToImmediate(0);
} else if (TII.isMemOp(&MI)) {
- unsigned resReg = HEXAGON_RESERVED_REG_1;
- if (!MFI.hasVarSizedObjects() &&
- TII.isValidOffset(MI.getOpcode(), (FrameSize+Offset))) {
- MI.getOperand(FIOperandNum).ChangeToRegister(getStackRegister(),
- false, false, true);
- MI.getOperand(FIOperandNum+1).ChangeToImmediate(FrameSize+Offset);
- } else if (!TII.isValidOffset(Hexagon::ADD_ri, Offset)) {
- BuildMI(*MI.getParent(), II, MI.getDebugLoc(),
- TII.get(Hexagon::CONST32_Int_Real), resReg).addImm(Offset);
- BuildMI(*MI.getParent(), II, MI.getDebugLoc(),
- TII.get(Hexagon::ADD_rr),
- resReg).addReg(FrameReg).addReg(resReg);
- MI.getOperand(FIOperandNum).ChangeToRegister(resReg, false, false,
- true);
- MI.getOperand(FIOperandNum+1).ChangeToImmediate(0);
+ // use the constant extender if the instruction provides it
+ // and we are V4TOps.
+ if (Subtarget.hasV4TOps()) {
+ if (TII.isConstExtended(&MI)) {
+ MI.getOperand(FIOperandNum).ChangeToRegister(FrameReg, false);
+ MI.getOperand(FIOperandNum+1).ChangeToImmediate(Offset);
+ TII.immediateExtend(&MI);
+ } else {
+ llvm_unreachable("Need to implement for memops");
+ }
} else {
- BuildMI(*MI.getParent(), II, MI.getDebugLoc(),
- TII.get(Hexagon::ADD_ri),
- resReg).addReg(FrameReg).addImm(Offset);
- MI.getOperand(FIOperandNum).ChangeToRegister(resReg, false, false,
- true);
- MI.getOperand(FIOperandNum+1).ChangeToImmediate(0);
+ // Only V3 and older instructions here.
+ unsigned ResReg = HEXAGON_RESERVED_REG_1;
+ if (!MFI.hasVarSizedObjects() &&
+ TII.isValidOffset(MI.getOpcode(), (FrameSize+Offset))) {
+ MI.getOperand(FIOperandNum).ChangeToRegister(getStackRegister(),
+ false, false, false);
+ MI.getOperand(FIOperandNum+1).ChangeToImmediate(FrameSize+Offset);
+ } else if (!TII.isValidOffset(Hexagon::ADD_ri, Offset)) {
+ BuildMI(*MI.getParent(), II, MI.getDebugLoc(),
+ TII.get(Hexagon::CONST32_Int_Real), ResReg).addImm(Offset);
+ BuildMI(*MI.getParent(), II, MI.getDebugLoc(),
+ TII.get(Hexagon::ADD_rr), ResReg).addReg(FrameReg).
+ addReg(ResReg);
+ MI.getOperand(FIOperandNum).ChangeToRegister(ResReg, false, false,
+ true);
+ MI.getOperand(FIOperandNum+1).ChangeToImmediate(0);
+ } else {
+ BuildMI(*MI.getParent(), II, MI.getDebugLoc(),
+ TII.get(Hexagon::ADD_ri), ResReg).addReg(FrameReg).
+ addImm(Offset);
+ MI.getOperand(FIOperandNum).ChangeToRegister(ResReg, false, false,
+ true);
+ MI.getOperand(FIOperandNum+1).ChangeToImmediate(0);
+ }
}
} else {
unsigned dstReg = MI.getOperand(0).getReg();
return Hexagon::R29;
}
-void HexagonRegisterInfo::getInitialFrameState(std::vector<MachineMove>
- &Moves) const
-{
- // VirtualFP = (R30 + #0).
- unsigned FPReg = getFrameRegister();
- MachineLocation Dst(MachineLocation::VirtualFP);
- MachineLocation Src(FPReg, 0);
- Moves.push_back(MachineMove(0, Dst, Src));
-}
-
-unsigned HexagonRegisterInfo::getEHExceptionRegister() const {
- llvm_unreachable("What is the exception register");
-}
-
-unsigned HexagonRegisterInfo::getEHHandlerRegister() const {
- llvm_unreachable("What is the exception handler register");
-}
-
#define GET_REGINFO_TARGET_DESC
#include "HexagonGenRegisterInfo.inc"