//
//===----------------------------------------------------------------------===//
//
-// This file contains the SPARC implementation of the MRegisterInfo class.
+// This file contains the SPARC implementation of the TargetRegisterInfo class.
//
//===----------------------------------------------------------------------===//
#include "llvm/CodeGen/MachineInstrBuilder.h"
#include "llvm/CodeGen/MachineFunction.h"
#include "llvm/CodeGen/MachineFrameInfo.h"
-#include "llvm/CodeGen/MachineLocation.h"
+#include "llvm/Support/ErrorHandling.h"
#include "llvm/Target/TargetInstrInfo.h"
#include "llvm/Type.h"
#include "llvm/ADT/BitVector.h"
#include "llvm/ADT/STLExtras.h"
+
+#define GET_REGINFO_TARGET_DESC
+#include "SparcGenRegisterInfo.inc"
+
using namespace llvm;
SparcRegisterInfo::SparcRegisterInfo(SparcSubtarget &st,
const TargetInstrInfo &tii)
- : SparcGenRegisterInfo(SP::ADJCALLSTACKDOWN, SP::ADJCALLSTACKUP),
- Subtarget(st), TII(tii) {
-}
-
-void SparcRegisterInfo::reMaterialize(MachineBasicBlock &MBB,
- MachineBasicBlock::iterator I,
- unsigned DestReg,
- const MachineInstr *Orig) const {
- MachineInstr *MI = Orig->clone();
- MI->getOperand(0).setReg(DestReg);
- MBB.insert(I, MI);
+ : SparcGenRegisterInfo(SP::I7), Subtarget(st), TII(tii) {
}
const unsigned* SparcRegisterInfo::getCalleeSavedRegs(const MachineFunction *MF)
BitVector SparcRegisterInfo::getReservedRegs(const MachineFunction &MF) const {
BitVector Reserved(getNumRegs());
+ // FIXME: G1 reserved for now for large imm generation by frame code.
+ Reserved.set(SP::G1);
Reserved.set(SP::G2);
Reserved.set(SP::G3);
Reserved.set(SP::G4);
return Reserved;
}
-
-const TargetRegisterClass* const*
-SparcRegisterInfo::getCalleeSavedRegClasses(const MachineFunction *MF) const {
- static const TargetRegisterClass * const CalleeSavedRegClasses[] = { 0 };
- return CalleeSavedRegClasses;
-}
-
-bool SparcRegisterInfo::hasFP(const MachineFunction &MF) const {
- return false;
-}
-
void SparcRegisterInfo::
eliminateCallFramePseudoInstr(MachineFunction &MF, MachineBasicBlock &MBB,
MachineBasicBlock::iterator I) const {
MachineInstr &MI = *I;
+ DebugLoc dl = MI.getDebugLoc();
int Size = MI.getOperand(0).getImm();
if (MI.getOpcode() == SP::ADJCALLSTACKDOWN)
Size = -Size;
if (Size)
- BuildMI(MBB, I, TII.get(SP::ADDri), SP::O6).addReg(SP::O6).addImm(Size);
+ BuildMI(MBB, I, dl, TII.get(SP::ADDri), SP::O6).addReg(SP::O6).addImm(Size);
MBB.erase(I);
}
-void SparcRegisterInfo::eliminateFrameIndex(MachineBasicBlock::iterator II,
- int SPAdj, RegScavenger *RS) const {
+void
+SparcRegisterInfo::eliminateFrameIndex(MachineBasicBlock::iterator II,
+ int SPAdj, RegScavenger *RS) const {
assert(SPAdj == 0 && "Unexpected");
unsigned i = 0;
MachineInstr &MI = *II;
- while (!MI.getOperand(i).isFrameIndex()) {
+ DebugLoc dl = MI.getDebugLoc();
+ while (!MI.getOperand(i).isFI()) {
++i;
assert(i < MI.getNumOperands() && "Instr doesn't have FrameIndex operand!");
}
// Otherwise, emit a G1 = SETHI %hi(offset). FIXME: it would be better to
// scavenge a register here instead of reserving G1 all of the time.
unsigned OffHi = (unsigned)Offset >> 10U;
- BuildMI(*MI.getParent(), II, TII.get(SP::SETHIi), SP::G1).addImm(OffHi);
+ BuildMI(*MI.getParent(), II, dl, TII.get(SP::SETHIi), SP::G1).addImm(OffHi);
// Emit G1 = G1 + I6
- BuildMI(*MI.getParent(), II, TII.get(SP::ADDrr), SP::G1).addReg(SP::G1)
+ BuildMI(*MI.getParent(), II, dl, TII.get(SP::ADDrr), SP::G1).addReg(SP::G1)
.addReg(SP::I6);
// Insert: G1+%lo(offset) into the user.
MI.getOperand(i).ChangeToRegister(SP::G1, false);
void SparcRegisterInfo::
processFunctionBeforeFrameFinalized(MachineFunction &MF) const {}
-void SparcRegisterInfo::emitPrologue(MachineFunction &MF) const {
- MachineBasicBlock &MBB = MF.front();
- MachineFrameInfo *MFI = MF.getFrameInfo();
-
- // Get the number of bytes to allocate from the FrameInfo
- int NumBytes = (int) MFI->getStackSize();
-
- // Emit the correct save instruction based on the number of bytes in
- // the frame. Minimum stack frame size according to V8 ABI is:
- // 16 words for register window spill
- // 1 word for address of returned aggregate-value
- // + 6 words for passing parameters on the stack
- // ----------
- // 23 words * 4 bytes per word = 92 bytes
- NumBytes += 92;
- // Round up to next doubleword boundary -- a double-word boundary
- // is required by the ABI.
- NumBytes = (NumBytes + 7) & ~7;
- NumBytes = -NumBytes;
-
- if (NumBytes >= -4096) {
- BuildMI(MBB, MBB.begin(), TII.get(SP::SAVEri),
- SP::O6).addImm(NumBytes).addReg(SP::O6);
- } else {
- MachineBasicBlock::iterator InsertPt = MBB.begin();
- // Emit this the hard way. This clobbers G1 which we always know is
- // available here.
- unsigned OffHi = (unsigned)NumBytes >> 10U;
- BuildMI(MBB, InsertPt, TII.get(SP::SETHIi), SP::G1).addImm(OffHi);
- // Emit G1 = G1 + I6
- BuildMI(MBB, InsertPt, TII.get(SP::ORri), SP::G1)
- .addReg(SP::G1).addImm(NumBytes & ((1 << 10)-1));
- BuildMI(MBB, InsertPt, TII.get(SP::SAVErr), SP::O6)
- .addReg(SP::O6).addReg(SP::G1);
- }
-}
-
-void SparcRegisterInfo::emitEpilogue(MachineFunction &MF,
- MachineBasicBlock &MBB) const {
- MachineBasicBlock::iterator MBBI = prior(MBB.end());
- assert(MBBI->getOpcode() == SP::RETL &&
- "Can only put epilog before 'retl' instruction!");
- BuildMI(MBB, MBBI, TII.get(SP::RESTORErr), SP::G0).addReg(SP::G0)
- .addReg(SP::G0);
-}
-
-unsigned SparcRegisterInfo::getRARegister() const {
- assert(0 && "What is the return address register");
- return 0;
-}
-
-unsigned SparcRegisterInfo::getFrameRegister(MachineFunction &MF) const {
- assert(0 && "What is the frame register");
- return SP::G1;
+unsigned SparcRegisterInfo::getFrameRegister(const MachineFunction &MF) const {
+ return SP::I6;
}
unsigned SparcRegisterInfo::getEHExceptionRegister() const {
- assert(0 && "What is the exception register");
+ llvm_unreachable("What is the exception register");
return 0;
}
unsigned SparcRegisterInfo::getEHHandlerRegister() const {
- assert(0 && "What is the exception handler register");
+ llvm_unreachable("What is the exception handler register");
return 0;
}
-
-int SparcRegisterInfo::getDwarfRegNum(unsigned RegNum, bool isEH) const {
- assert(0 && "What is the dwarf register number");
- return -1;
-}
-
-#include "SparcGenRegisterInfo.inc"
-
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