#include "Alpha.h"
#include "AlphaInstrInfo.h"
#include "AlphaMachineFunctionInfo.h"
-#include "AlphaGenInstrInfo.inc"
+#include "llvm/CodeGen/MachineInstrBuilder.h"
#include "llvm/CodeGen/MachineRegisterInfo.h"
#include "llvm/ADT/STLExtras.h"
#include "llvm/ADT/SmallVector.h"
-#include "llvm/CodeGen/MachineInstrBuilder.h"
#include "llvm/Support/ErrorHandling.h"
+
+#define GET_INSTRINFO_CTOR
+#include "AlphaGenInstrInfo.inc"
using namespace llvm;
AlphaInstrInfo::AlphaInstrInfo()
- : TargetInstrInfoImpl(AlphaInsts, array_lengthof(AlphaInsts)),
- RI(*this) { }
-
-
-bool AlphaInstrInfo::isMoveInstr(const MachineInstr& MI,
- unsigned& sourceReg, unsigned& destReg,
- unsigned& SrcSR, unsigned& DstSR) const {
- unsigned oc = MI.getOpcode();
- if (oc == Alpha::BISr ||
- oc == Alpha::CPYSS ||
- oc == Alpha::CPYST ||
- oc == Alpha::CPYSSt ||
- oc == Alpha::CPYSTs) {
- // or r1, r2, r2
- // cpys(s|t) r1 r2 r2
- assert(MI.getNumOperands() >= 3 &&
- MI.getOperand(0).isReg() &&
- MI.getOperand(1).isReg() &&
- MI.getOperand(2).isReg() &&
- "invalid Alpha BIS instruction!");
- if (MI.getOperand(1).getReg() == MI.getOperand(2).getReg()) {
- sourceReg = MI.getOperand(1).getReg();
- destReg = MI.getOperand(0).getReg();
- SrcSR = DstSR = 0;
- return true;
- }
- }
- return false;
+ : AlphaGenInstrInfo(Alpha::ADJUSTSTACKDOWN, Alpha::ADJUSTSTACKUP),
+ RI(*this) {
}
+
unsigned
AlphaInstrInfo::isLoadFromStackSlot(const MachineInstr *MI,
int &FrameIndex) const {
unsigned AlphaInstrInfo::InsertBranch(MachineBasicBlock &MBB,
MachineBasicBlock *TBB,
MachineBasicBlock *FBB,
- const SmallVectorImpl<MachineOperand> &Cond) const {
- // FIXME this should probably have a DebugLoc argument
- DebugLoc dl = DebugLoc::getUnknownLoc();
+ const SmallVectorImpl<MachineOperand> &Cond,
+ DebugLoc DL) const {
assert(TBB && "InsertBranch must not be told to insert a fallthrough");
assert((Cond.size() == 2 || Cond.size() == 0) &&
"Alpha branch conditions have two components!");
// One-way branch.
if (FBB == 0) {
if (Cond.empty()) // Unconditional branch
- BuildMI(&MBB, dl, get(Alpha::BR)).addMBB(TBB);
+ BuildMI(&MBB, DL, get(Alpha::BR)).addMBB(TBB);
else // Conditional branch
if (isAlphaIntCondCode(Cond[0].getImm()))
- BuildMI(&MBB, dl, get(Alpha::COND_BRANCH_I))
+ BuildMI(&MBB, DL, get(Alpha::COND_BRANCH_I))
.addImm(Cond[0].getImm()).addReg(Cond[1].getReg()).addMBB(TBB);
else
- BuildMI(&MBB, dl, get(Alpha::COND_BRANCH_F))
+ BuildMI(&MBB, DL, get(Alpha::COND_BRANCH_F))
.addImm(Cond[0].getImm()).addReg(Cond[1].getReg()).addMBB(TBB);
return 1;
}
// Two-way Conditional Branch.
if (isAlphaIntCondCode(Cond[0].getImm()))
- BuildMI(&MBB, dl, get(Alpha::COND_BRANCH_I))
+ BuildMI(&MBB, DL, get(Alpha::COND_BRANCH_I))
.addImm(Cond[0].getImm()).addReg(Cond[1].getReg()).addMBB(TBB);
else
- BuildMI(&MBB, dl, get(Alpha::COND_BRANCH_F))
+ BuildMI(&MBB, DL, get(Alpha::COND_BRANCH_F))
.addImm(Cond[0].getImm()).addReg(Cond[1].getReg()).addMBB(TBB);
- BuildMI(&MBB, dl, get(Alpha::BR)).addMBB(FBB);
+ BuildMI(&MBB, DL, get(Alpha::BR)).addMBB(FBB);
return 2;
}
-bool AlphaInstrInfo::copyRegToReg(MachineBasicBlock &MBB,
- MachineBasicBlock::iterator MI,
- unsigned DestReg, unsigned SrcReg,
- const TargetRegisterClass *DestRC,
- const TargetRegisterClass *SrcRC) const {
- //cerr << "copyRegToReg " << DestReg << " <- " << SrcReg << "\n";
- if (DestRC != SrcRC) {
- // Not yet supported!
- return false;
- }
-
- DebugLoc DL = DebugLoc::getUnknownLoc();
- if (MI != MBB.end()) DL = MI->getDebugLoc();
-
- if (DestRC == Alpha::GPRCRegisterClass) {
+void AlphaInstrInfo::copyPhysReg(MachineBasicBlock &MBB,
+ MachineBasicBlock::iterator MI, DebugLoc DL,
+ unsigned DestReg, unsigned SrcReg,
+ bool KillSrc) const {
+ if (Alpha::GPRCRegClass.contains(DestReg, SrcReg)) {
BuildMI(MBB, MI, DL, get(Alpha::BISr), DestReg)
.addReg(SrcReg)
- .addReg(SrcReg);
- } else if (DestRC == Alpha::F4RCRegisterClass) {
+ .addReg(SrcReg, getKillRegState(KillSrc));
+ } else if (Alpha::F4RCRegClass.contains(DestReg, SrcReg)) {
BuildMI(MBB, MI, DL, get(Alpha::CPYSS), DestReg)
.addReg(SrcReg)
- .addReg(SrcReg);
- } else if (DestRC == Alpha::F8RCRegisterClass) {
+ .addReg(SrcReg, getKillRegState(KillSrc));
+ } else if (Alpha::F8RCRegClass.contains(DestReg, SrcReg)) {
BuildMI(MBB, MI, DL, get(Alpha::CPYST), DestReg)
.addReg(SrcReg)
- .addReg(SrcReg);
+ .addReg(SrcReg, getKillRegState(KillSrc));
} else {
- // Attempt to copy register that is not GPR or FPR
- return false;
+ llvm_unreachable("Attempt to copy register that is not GPR or FPR");
}
-
- return true;
}
void
AlphaInstrInfo::storeRegToStackSlot(MachineBasicBlock &MBB,
MachineBasicBlock::iterator MI,
unsigned SrcReg, bool isKill, int FrameIdx,
- const TargetRegisterClass *RC) const {
+ const TargetRegisterClass *RC,
+ const TargetRegisterInfo *TRI) const {
//cerr << "Trying to store " << getPrettyName(SrcReg) << " to "
// << FrameIdx << "\n";
//BuildMI(MBB, MI, Alpha::WTF, 0).addReg(SrcReg);
- DebugLoc DL = DebugLoc::getUnknownLoc();
+ DebugLoc DL;
if (MI != MBB.end()) DL = MI->getDebugLoc();
if (RC == Alpha::F4RCRegisterClass)
AlphaInstrInfo::loadRegFromStackSlot(MachineBasicBlock &MBB,
MachineBasicBlock::iterator MI,
unsigned DestReg, int FrameIdx,
- const TargetRegisterClass *RC) const {
+ const TargetRegisterClass *RC,
+ const TargetRegisterInfo *TRI) const {
//cerr << "Trying to load " << getPrettyName(DestReg) << " to "
// << FrameIdx << "\n";
- DebugLoc DL = DebugLoc::getUnknownLoc();
+ DebugLoc DL;
if (MI != MBB.end()) DL = MI->getDebugLoc();
if (RC == Alpha::F4RCRegisterClass)
llvm_unreachable("Unhandled register class");
}
-MachineInstr *AlphaInstrInfo::foldMemoryOperandImpl(MachineFunction &MF,
- MachineInstr *MI,
- const SmallVectorImpl<unsigned> &Ops,
- int FrameIndex) const {
- if (Ops.size() != 1) return NULL;
-
- // Make sure this is a reg-reg copy.
- unsigned Opc = MI->getOpcode();
-
- MachineInstr *NewMI = NULL;
- switch(Opc) {
- default:
- break;
- case Alpha::BISr:
- case Alpha::CPYSS:
- case Alpha::CPYST:
- if (MI->getOperand(1).getReg() == MI->getOperand(2).getReg()) {
- if (Ops[0] == 0) { // move -> store
- unsigned InReg = MI->getOperand(1).getReg();
- bool isKill = MI->getOperand(1).isKill();
- bool isUndef = MI->getOperand(1).isUndef();
- Opc = (Opc == Alpha::BISr) ? Alpha::STQ :
- ((Opc == Alpha::CPYSS) ? Alpha::STS : Alpha::STT);
- NewMI = BuildMI(MF, MI->getDebugLoc(), get(Opc))
- .addReg(InReg, getKillRegState(isKill) | getUndefRegState(isUndef))
- .addFrameIndex(FrameIndex)
- .addReg(Alpha::F31);
- } else { // load -> move
- unsigned OutReg = MI->getOperand(0).getReg();
- bool isDead = MI->getOperand(0).isDead();
- bool isUndef = MI->getOperand(0).isUndef();
- Opc = (Opc == Alpha::BISr) ? Alpha::LDQ :
- ((Opc == Alpha::CPYSS) ? Alpha::LDS : Alpha::LDT);
- NewMI = BuildMI(MF, MI->getDebugLoc(), get(Opc))
- .addReg(OutReg, RegState::Define | getDeadRegState(isDead) |
- getUndefRegState(isUndef))
- .addFrameIndex(FrameIndex)
- .addReg(Alpha::F31);
- }
- }
- break;
- }
- return NewMI;
-}
-
static unsigned AlphaRevCondCode(unsigned Opcode) {
switch (Opcode) {
case Alpha::BEQ: return Alpha::BNE;
bool AllowModify) const {
// If the block has no terminators, it just falls into the block after it.
MachineBasicBlock::iterator I = MBB.end();
- if (I == MBB.begin() || !isUnpredicatedTerminator(--I))
+ if (I == MBB.begin())
+ return false;
+ --I;
+ while (I->isDebugValue()) {
+ if (I == MBB.begin())
+ return false;
+ --I;
+ }
+ if (!isUnpredicatedTerminator(I))
return false;
// Get the last instruction in the block.
MachineBasicBlock::iterator I = MBB.end();
if (I == MBB.begin()) return 0;
--I;
+ while (I->isDebugValue()) {
+ if (I == MBB.begin())
+ return 0;
+ --I;
+ }
if (I->getOpcode() != Alpha::BR &&
I->getOpcode() != Alpha::COND_BRANCH_I &&
I->getOpcode() != Alpha::COND_BRANCH_F)
void AlphaInstrInfo::insertNoop(MachineBasicBlock &MBB,
MachineBasicBlock::iterator MI) const {
- DebugLoc DL = DebugLoc::getUnknownLoc();
- if (MI != MBB.end()) DL = MI->getDebugLoc();
+ DebugLoc DL;
BuildMI(MBB, MI, DL, get(Alpha::BISr), Alpha::R31)
.addReg(Alpha::R31)
.addReg(Alpha::R31);
}
-bool AlphaInstrInfo::BlockHasNoFallThrough(const MachineBasicBlock &MBB) const {
- if (MBB.empty()) return false;
-
- switch (MBB.back().getOpcode()) {
- case Alpha::RETDAG: // Return.
- case Alpha::RETDAGp:
- case Alpha::BR: // Uncond branch.
- case Alpha::JMP: // Indirect branch.
- return true;
- default: return false;
- }
-}
bool AlphaInstrInfo::
ReverseBranchCondition(SmallVectorImpl<MachineOperand> &Cond) const {
assert(Cond.size() == 2 && "Invalid Alpha branch opcode!");
const TargetInstrInfo *TII = MF->getTarget().getInstrInfo();
GlobalBaseReg = RegInfo.createVirtualRegister(&Alpha::GPRCRegClass);
- bool Ok = TII->copyRegToReg(FirstMBB, MBBI, GlobalBaseReg, Alpha::R29,
- &Alpha::GPRCRegClass, &Alpha::GPRCRegClass);
- assert(Ok && "Couldn't assign to global base register!");
- Ok = Ok; // Silence warning when assertions are turned off.
+ BuildMI(FirstMBB, MBBI, DebugLoc(), TII->get(TargetOpcode::COPY),
+ GlobalBaseReg).addReg(Alpha::R29);
RegInfo.addLiveIn(Alpha::R29);
AlphaFI->setGlobalBaseReg(GlobalBaseReg);
const TargetInstrInfo *TII = MF->getTarget().getInstrInfo();
GlobalRetAddr = RegInfo.createVirtualRegister(&Alpha::GPRCRegClass);
- bool Ok = TII->copyRegToReg(FirstMBB, MBBI, GlobalRetAddr, Alpha::R26,
- &Alpha::GPRCRegClass, &Alpha::GPRCRegClass);
- assert(Ok && "Couldn't assign to global return address register!");
- Ok = Ok; // Silence warning when assertions are turned off.
+ BuildMI(FirstMBB, MBBI, DebugLoc(), TII->get(TargetOpcode::COPY),
+ GlobalRetAddr).addReg(Alpha::R26);
RegInfo.addLiveIn(Alpha::R26);
AlphaFI->setGlobalRetAddr(GlobalRetAddr);
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