#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/Function.h"
+#include "llvm/IR/Function.h"
+#include "llvm/IR/Type.h"
#include "llvm/MC/MachineLocation.h"
#include "llvm/Support/CommandLine.h"
#include "llvm/Support/ErrorHandling.h"
#include "llvm/Target/TargetInstrInfo.h"
#include "llvm/Target/TargetMachine.h"
#include "llvm/Target/TargetOptions.h"
-#include "llvm/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
"architecture version");
}
-void HexagonRegisterInfo::
-eliminateCallFramePseudoInstr(MachineFunction &MF, MachineBasicBlock &MBB,
- MachineBasicBlock::iterator I) const {
- MachineInstr &MI = *I;
-
- if (MI.getOpcode() == Hexagon::ADJCALLSTACKDOWN) {
- // Hexagon_TODO: add code
- } else if (MI.getOpcode() == Hexagon::ADJCALLSTACKUP) {
- // Hexagon_TODO: add code
- } else {
- llvm_unreachable("Cannot handle this call frame pseudo instruction");
- }
- MBB.erase(I);
-}
-
void HexagonRegisterInfo::eliminateFrameIndex(MachineBasicBlock::iterator II,
- int SPAdj, RegScavenger *RS) const {
-
+ int SPAdj, unsigned FIOperandNum,
+ RegScavenger *RS) const {
//
// Hexagon_TODO: Do we need to enforce this for Hexagon?
assert(SPAdj == 0 && "Unexpected");
-
- unsigned i = 0;
MachineInstr &MI = *II;
- while (!MI.getOperand(i).isFI()) {
- ++i;
- assert(i < MI.getNumOperands() && "Instr doesn't have FrameIndex operand!");
- }
-
- int FrameIndex = MI.getOperand(i).getIndex();
+ int FrameIndex = MI.getOperand(FIOperandNum).getIndex();
// 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();
TII.isValidOffset(MI.getOpcode(), (FrameSize+Offset)) &&
!TII.isSpillPredRegOp(&MI)) {
// Replace frame index with a stack pointer reference.
- MI.getOperand(i).ChangeToRegister(getStackRegister(), false, false, true);
- MI.getOperand(i+1).ChangeToImmediate(FrameSize+Offset);
+ MI.getOperand(FIOperandNum).ChangeToRegister(getStackRegister(), false,
+ false, true);
+ MI.getOperand(FIOperandNum + 1).ChangeToImmediate(FrameSize+Offset);
} else {
// Replace frame index with a frame pointer reference.
if (!TII.isValidOffset(MI.getOpcode(), Offset)) {
dstReg).addReg(FrameReg).addImm(Offset);
}
- MI.getOperand(i).ChangeToRegister(dstReg, false, false, true);
- MI.getOperand(i+1).ChangeToImmediate(0);
+ MI.getOperand(FIOperandNum).ChangeToRegister(dstReg, false, false,true);
+ MI.getOperand(FIOperandNum+1).ChangeToImmediate(0);
} else if ((MI.getOpcode() == Hexagon::STriw_indexed) ||
(MI.getOpcode() == Hexagon::STriw) ||
(MI.getOpcode() == Hexagon::STrid) ||
TII.get(Hexagon::ADD_ri),
resReg).addReg(FrameReg).addImm(Offset);
}
- MI.getOperand(i).ChangeToRegister(resReg, false, false, true);
- MI.getOperand(i+1).ChangeToImmediate(0);
+ 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(i).ChangeToRegister(getStackRegister(), false, false,
- true);
- MI.getOperand(i+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(i).ChangeToRegister(resReg, false, false, true);
- MI.getOperand(i+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(i).ChangeToRegister(resReg, false, false, true);
- MI.getOperand(i+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();
TII.get(Hexagon::ADD_rr),
dstReg).addReg(FrameReg).addReg(dstReg);
// Can we delete MI??? r2 = add (r2, #0).
- MI.getOperand(i).ChangeToRegister(dstReg, false, false, true);
- MI.getOperand(i+1).ChangeToImmediate(0);
+ MI.getOperand(FIOperandNum).ChangeToRegister(dstReg, false, false,true);
+ MI.getOperand(FIOperandNum+1).ChangeToImmediate(0);
}
} else {
// If the offset is small enough to fit in the immediate field, directly
// encode it.
- MI.getOperand(i).ChangeToRegister(FrameReg, false);
- MI.getOperand(i+1).ChangeToImmediate(Offset);
+ MI.getOperand(FIOperandNum).ChangeToRegister(FrameReg, false);
+ MI.getOperand(FIOperandNum+1).ChangeToImmediate(Offset);
}
}
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));
-}
-
-// Get the weight in units of pressure for this register class.
-const RegClassWeight &
-HexagonRegisterInfo::getRegClassWeight(const TargetRegisterClass *RC) const {
- // Each TargetRegisterClass has a per register weight, and weight
- // limit which must be less than the limits of its pressure sets.
- static const RegClassWeight RCWeightTable[] = {
- {1, 32}, // IntRegs
- {1, 8}, // CRRegs
- {1, 4}, // PredRegs
- {2, 16}, // DoubleRegs
- {0, 0} };
- return RCWeightTable[RC->getID()];
-}
-
-/// Get the number of dimensions of register pressure.
-unsigned HexagonRegisterInfo::getNumRegPressureSets() const {
- return 4;
-}
-
-/// Get the name of this register unit pressure set.
-const char *HexagonRegisterInfo::getRegPressureSetName(unsigned Idx) const {
- static const char *const RegPressureSetName[] = {
- "IntRegsRegSet",
- "CRRegsRegSet",
- "PredRegsRegSet",
- "DoubleRegsRegSet"
- };
- assert((Idx < 4) && "Index out of bounds");
- return RegPressureSetName[Idx];
-}
-
-/// Get the register unit pressure limit for this dimension.
-/// This limit must be adjusted dynamically for reserved registers.
-unsigned HexagonRegisterInfo::getRegPressureSetLimit(unsigned Idx) const {
- static const int RegPressureLimit [] = { 16, 4, 2, 8 };
- assert((Idx < 4) && "Index out of bounds");
- return RegPressureLimit[Idx];
-}
-
-const int*
-HexagonRegisterInfo::getRegClassPressureSets(const TargetRegisterClass *RC)
- const {
- static const int RCSetsTable[] = {
- 0, -1, // IntRegs
- 1, -1, // CRRegs
- 2, -1, // PredRegs
- 0, -1, // DoubleRegs
- -1 };
- static const unsigned RCSetStartTable[] = { 0, 2, 4, 6, 0 };
- unsigned SetListStart = RCSetStartTable[RC->getID()];
- return &RCSetsTable[SetListStart];
-}
-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"
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