-//===- SparcInstrInfo.cpp - Sparc Instruction Information -------*- C++ -*-===//
+//===-- SparcInstrInfo.cpp - Sparc Instruction Information ----------------===//
//
// The LLVM Compiler Infrastructure
//
//===----------------------------------------------------------------------===//
#include "SparcInstrInfo.h"
-#include "SparcSubtarget.h"
#include "Sparc.h"
+#include "SparcMachineFunctionInfo.h"
+#include "SparcSubtarget.h"
#include "llvm/ADT/STLExtras.h"
#include "llvm/ADT/SmallVector.h"
+#include "llvm/CodeGen/MachineFrameInfo.h"
#include "llvm/CodeGen/MachineInstrBuilder.h"
+#include "llvm/CodeGen/MachineMemOperand.h"
#include "llvm/CodeGen/MachineRegisterInfo.h"
#include "llvm/Support/ErrorHandling.h"
-#include "SparcMachineFunctionInfo.h"
+#include "llvm/Support/TargetRegistry.h"
+
+using namespace llvm;
-#define GET_INSTRINFO_CTOR
-#define GET_INSTRINFO_MC_DESC
+#define GET_INSTRINFO_CTOR_DTOR
#include "SparcGenInstrInfo.inc"
-using namespace llvm;
+// Pin the vtable to this file.
+void SparcInstrInfo::anchor() {}
SparcInstrInfo::SparcInstrInfo(SparcSubtarget &ST)
- : SparcGenInstrInfo(SP::ADJCALLSTACKDOWN, SP::ADJCALLSTACKUP),
- RI(ST, *this), Subtarget(ST) {
-}
+ : SparcGenInstrInfo(SP::ADJCALLSTACKDOWN, SP::ADJCALLSTACKUP), RI(),
+ Subtarget(ST) {}
/// isLoadFromStackSlot - If the specified machine instruction is a direct
/// load from a stack slot, return the virtual or physical register number of
unsigned SparcInstrInfo::isLoadFromStackSlot(const MachineInstr *MI,
int &FrameIndex) const {
if (MI->getOpcode() == SP::LDri ||
+ MI->getOpcode() == SP::LDXri ||
MI->getOpcode() == SP::LDFri ||
- MI->getOpcode() == SP::LDDFri) {
+ MI->getOpcode() == SP::LDDFri ||
+ MI->getOpcode() == SP::LDQFri) {
if (MI->getOperand(1).isFI() && MI->getOperand(2).isImm() &&
MI->getOperand(2).getImm() == 0) {
FrameIndex = MI->getOperand(1).getIndex();
unsigned SparcInstrInfo::isStoreToStackSlot(const MachineInstr *MI,
int &FrameIndex) const {
if (MI->getOpcode() == SP::STri ||
+ MI->getOpcode() == SP::STXri ||
MI->getOpcode() == SP::STFri ||
- MI->getOpcode() == SP::STDFri) {
+ MI->getOpcode() == SP::STDFri ||
+ MI->getOpcode() == SP::STQFri) {
if (MI->getOperand(0).isFI() && MI->getOperand(1).isImm() &&
MI->getOperand(1).getImm() == 0) {
FrameIndex = MI->getOperand(0).getIndex();
static SPCC::CondCodes GetOppositeBranchCondition(SPCC::CondCodes CC)
{
switch(CC) {
- default: llvm_unreachable("Unknown condition code");
+ case SPCC::ICC_A: return SPCC::ICC_N;
+ case SPCC::ICC_N: return SPCC::ICC_A;
case SPCC::ICC_NE: return SPCC::ICC_E;
case SPCC::ICC_E: return SPCC::ICC_NE;
case SPCC::ICC_G: return SPCC::ICC_LE;
case SPCC::ICC_VC: return SPCC::ICC_VS;
case SPCC::ICC_VS: return SPCC::ICC_VC;
+ case SPCC::FCC_A: return SPCC::FCC_N;
+ case SPCC::FCC_N: return SPCC::FCC_A;
case SPCC::FCC_U: return SPCC::FCC_O;
case SPCC::FCC_O: return SPCC::FCC_U;
- case SPCC::FCC_G: return SPCC::FCC_LE;
- case SPCC::FCC_LE: return SPCC::FCC_G;
- case SPCC::FCC_UG: return SPCC::FCC_ULE;
- case SPCC::FCC_ULE: return SPCC::FCC_UG;
- case SPCC::FCC_L: return SPCC::FCC_GE;
- case SPCC::FCC_GE: return SPCC::FCC_L;
- case SPCC::FCC_UL: return SPCC::FCC_UGE;
- case SPCC::FCC_UGE: return SPCC::FCC_UL;
+ case SPCC::FCC_G: return SPCC::FCC_ULE;
+ case SPCC::FCC_LE: return SPCC::FCC_UG;
+ case SPCC::FCC_UG: return SPCC::FCC_LE;
+ case SPCC::FCC_ULE: return SPCC::FCC_G;
+ case SPCC::FCC_L: return SPCC::FCC_UGE;
+ case SPCC::FCC_GE: return SPCC::FCC_UL;
+ case SPCC::FCC_UL: return SPCC::FCC_GE;
+ case SPCC::FCC_UGE: return SPCC::FCC_L;
case SPCC::FCC_LG: return SPCC::FCC_UE;
case SPCC::FCC_UE: return SPCC::FCC_LG;
case SPCC::FCC_NE: return SPCC::FCC_E;
case SPCC::FCC_E: return SPCC::FCC_NE;
}
+ llvm_unreachable("Invalid cond code");
}
-
bool SparcInstrInfo::AnalyzeBranch(MachineBasicBlock &MBB,
MachineBasicBlock *&TBB,
MachineBasicBlock *&FBB,
if (I->isDebugValue())
continue;
- //When we see a non-terminator, we are done
+ // When we see a non-terminator, we are done.
if (!isUnpredicatedTerminator(I))
break;
- //Terminator is not a branch
- if (!I->getDesc().isBranch())
+ // Terminator is not a branch.
+ if (!I->isBranch())
return true;
- //Handle Unconditional branches
+ // Handle Unconditional branches.
if (I->getOpcode() == SP::BA) {
UnCondBrIter = I;
continue;
}
- while (llvm::next(I) != MBB.end())
- llvm::next(I)->eraseFromParent();
+ while (std::next(I) != MBB.end())
+ std::next(I)->eraseFromParent();
Cond.clear();
- FBB = 0;
+ FBB = nullptr;
if (MBB.isLayoutSuccessor(I->getOperand(0).getMBB())) {
- TBB = 0;
+ TBB = nullptr;
I->eraseFromParent();
I = MBB.end();
UnCondBrIter = MBB.end();
unsigned Opcode = I->getOpcode();
if (Opcode != SP::BCOND && Opcode != SP::FBCOND)
- return true; //Unknown Opcode
+ return true; // Unknown Opcode.
SPCC::CondCodes BranchCode = (SPCC::CondCodes)I->getOperand(1).getImm();
if (AllowModify && UnCondBrIter != MBB.end() &&
MBB.isLayoutSuccessor(TargetBB)) {
- //Transform the code
+ // Transform the code
//
// brCC L1
// ba L2
.addMBB(UnCondBrIter->getOperand(0).getMBB()).addImm(BranchCode);
BuildMI(MBB, UnCondBrIter, MBB.findDebugLoc(I), get(SP::BA))
.addMBB(TargetBB);
- MBB.addSuccessor(TargetBB);
+
OldInst->eraseFromParent();
UnCondBrIter->eraseFromParent();
Cond.push_back(MachineOperand::CreateImm(BranchCode));
continue;
}
- //FIXME: Handle subsequent conditional branches
- //For now, we can't handle multiple conditional branches
+ // FIXME: Handle subsequent conditional branches.
+ // For now, we can't handle multiple conditional branches.
return true;
}
return false;
unsigned
SparcInstrInfo::InsertBranch(MachineBasicBlock &MBB,MachineBasicBlock *TBB,
MachineBasicBlock *FBB,
- const SmallVectorImpl<MachineOperand> &Cond,
+ ArrayRef<MachineOperand> Cond,
DebugLoc DL) const {
assert(TBB && "InsertBranch must not be told to insert a fallthrough");
assert((Cond.size() == 1 || Cond.size() == 0) &&
return 1;
}
- //Conditional branch
+ // Conditional branch
unsigned CC = Cond[0].getImm();
if (IsIntegerCC(CC))
MachineBasicBlock::iterator I, DebugLoc DL,
unsigned DestReg, unsigned SrcReg,
bool KillSrc) const {
+ unsigned numSubRegs = 0;
+ unsigned movOpc = 0;
+ const unsigned *subRegIdx = nullptr;
+ bool ExtraG0 = false;
+
+ const unsigned DW_SubRegsIdx[] = { SP::sub_even, SP::sub_odd };
+ const unsigned DFP_FP_SubRegsIdx[] = { SP::sub_even, SP::sub_odd };
+ const unsigned QFP_DFP_SubRegsIdx[] = { SP::sub_even64, SP::sub_odd64 };
+ const unsigned QFP_FP_SubRegsIdx[] = { SP::sub_even, SP::sub_odd,
+ SP::sub_odd64_then_sub_even,
+ SP::sub_odd64_then_sub_odd };
+
if (SP::IntRegsRegClass.contains(DestReg, SrcReg))
BuildMI(MBB, I, DL, get(SP::ORrr), DestReg).addReg(SP::G0)
.addReg(SrcReg, getKillRegState(KillSrc));
- else if (SP::FPRegsRegClass.contains(DestReg, SrcReg))
+ else if (SP::IntPairRegClass.contains(DestReg, SrcReg)) {
+ subRegIdx = DW_SubRegsIdx;
+ numSubRegs = 2;
+ movOpc = SP::ORrr;
+ ExtraG0 = true;
+ } else if (SP::FPRegsRegClass.contains(DestReg, SrcReg))
BuildMI(MBB, I, DL, get(SP::FMOVS), DestReg)
.addReg(SrcReg, getKillRegState(KillSrc));
- else if (SP::DFPRegsRegClass.contains(DestReg, SrcReg))
- BuildMI(MBB, I, DL, get(Subtarget.isV9() ? SP::FMOVD : SP::FpMOVD), DestReg)
- .addReg(SrcReg, getKillRegState(KillSrc));
- else
+ else if (SP::DFPRegsRegClass.contains(DestReg, SrcReg)) {
+ if (Subtarget.isV9()) {
+ BuildMI(MBB, I, DL, get(SP::FMOVD), DestReg)
+ .addReg(SrcReg, getKillRegState(KillSrc));
+ } else {
+ // Use two FMOVS instructions.
+ subRegIdx = DFP_FP_SubRegsIdx;
+ numSubRegs = 2;
+ movOpc = SP::FMOVS;
+ }
+ } else if (SP::QFPRegsRegClass.contains(DestReg, SrcReg)) {
+ if (Subtarget.isV9()) {
+ if (Subtarget.hasHardQuad()) {
+ BuildMI(MBB, I, DL, get(SP::FMOVQ), DestReg)
+ .addReg(SrcReg, getKillRegState(KillSrc));
+ } else {
+ // Use two FMOVD instructions.
+ subRegIdx = QFP_DFP_SubRegsIdx;
+ numSubRegs = 2;
+ movOpc = SP::FMOVD;
+ }
+ } else {
+ // Use four FMOVS instructions.
+ subRegIdx = QFP_FP_SubRegsIdx;
+ numSubRegs = 4;
+ movOpc = SP::FMOVS;
+ }
+ } else if (SP::ASRRegsRegClass.contains(DestReg) &&
+ SP::IntRegsRegClass.contains(SrcReg)) {
+ BuildMI(MBB, I, DL, get(SP::WRASRrr), DestReg)
+ .addReg(SP::G0)
+ .addReg(SrcReg, getKillRegState(KillSrc));
+ } else if (SP::IntRegsRegClass.contains(DestReg) &&
+ SP::ASRRegsRegClass.contains(SrcReg)) {
+ BuildMI(MBB, I, DL, get(SP::RDASR), DestReg)
+ .addReg(SrcReg, getKillRegState(KillSrc));
+ } else
llvm_unreachable("Impossible reg-to-reg copy");
+
+ if (numSubRegs == 0 || subRegIdx == nullptr || movOpc == 0)
+ return;
+
+ const TargetRegisterInfo *TRI = &getRegisterInfo();
+ MachineInstr *MovMI = nullptr;
+
+ for (unsigned i = 0; i != numSubRegs; ++i) {
+ unsigned Dst = TRI->getSubReg(DestReg, subRegIdx[i]);
+ unsigned Src = TRI->getSubReg(SrcReg, subRegIdx[i]);
+ assert(Dst && Src && "Bad sub-register");
+
+ MachineInstrBuilder MIB = BuildMI(MBB, I, DL, get(movOpc), Dst);
+ if (ExtraG0)
+ MIB.addReg(SP::G0);
+ MIB.addReg(Src);
+ MovMI = MIB.getInstr();
+ }
+ // Add implicit super-register defs and kills to the last MovMI.
+ MovMI->addRegisterDefined(DestReg, TRI);
+ if (KillSrc)
+ MovMI->addRegisterKilled(SrcReg, TRI);
}
void SparcInstrInfo::
DebugLoc DL;
if (I != MBB.end()) DL = I->getDebugLoc();
+ MachineFunction *MF = MBB.getParent();
+ const MachineFrameInfo &MFI = *MF->getFrameInfo();
+ MachineMemOperand *MMO =
+ MF->getMachineMemOperand(MachinePointerInfo::getFixedStack(FI),
+ MachineMemOperand::MOStore,
+ MFI.getObjectSize(FI),
+ MFI.getObjectAlignment(FI));
+
// On the order of operands here: think "[FrameIdx + 0] = SrcReg".
- if (RC == SP::IntRegsRegisterClass)
+ if (RC == &SP::I64RegsRegClass)
+ BuildMI(MBB, I, DL, get(SP::STXri)).addFrameIndex(FI).addImm(0)
+ .addReg(SrcReg, getKillRegState(isKill)).addMemOperand(MMO);
+ else if (RC == &SP::IntRegsRegClass)
BuildMI(MBB, I, DL, get(SP::STri)).addFrameIndex(FI).addImm(0)
- .addReg(SrcReg, getKillRegState(isKill));
- else if (RC == SP::FPRegsRegisterClass)
+ .addReg(SrcReg, getKillRegState(isKill)).addMemOperand(MMO);
+ else if (RC == &SP::IntPairRegClass)
+ BuildMI(MBB, I, DL, get(SP::STDri)).addFrameIndex(FI).addImm(0)
+ .addReg(SrcReg, getKillRegState(isKill)).addMemOperand(MMO);
+ else if (RC == &SP::FPRegsRegClass)
BuildMI(MBB, I, DL, get(SP::STFri)).addFrameIndex(FI).addImm(0)
- .addReg(SrcReg, getKillRegState(isKill));
- else if (RC == SP::DFPRegsRegisterClass)
+ .addReg(SrcReg, getKillRegState(isKill)).addMemOperand(MMO);
+ else if (SP::DFPRegsRegClass.hasSubClassEq(RC))
BuildMI(MBB, I, DL, get(SP::STDFri)).addFrameIndex(FI).addImm(0)
- .addReg(SrcReg, getKillRegState(isKill));
+ .addReg(SrcReg, getKillRegState(isKill)).addMemOperand(MMO);
+ else if (SP::QFPRegsRegClass.hasSubClassEq(RC))
+ // Use STQFri irrespective of its legality. If STQ is not legal, it will be
+ // lowered into two STDs in eliminateFrameIndex.
+ BuildMI(MBB, I, DL, get(SP::STQFri)).addFrameIndex(FI).addImm(0)
+ .addReg(SrcReg, getKillRegState(isKill)).addMemOperand(MMO);
else
llvm_unreachable("Can't store this register to stack slot");
}
DebugLoc DL;
if (I != MBB.end()) DL = I->getDebugLoc();
- if (RC == SP::IntRegsRegisterClass)
- BuildMI(MBB, I, DL, get(SP::LDri), DestReg).addFrameIndex(FI).addImm(0);
- else if (RC == SP::FPRegsRegisterClass)
- BuildMI(MBB, I, DL, get(SP::LDFri), DestReg).addFrameIndex(FI).addImm(0);
- else if (RC == SP::DFPRegsRegisterClass)
- BuildMI(MBB, I, DL, get(SP::LDDFri), DestReg).addFrameIndex(FI).addImm(0);
+ MachineFunction *MF = MBB.getParent();
+ const MachineFrameInfo &MFI = *MF->getFrameInfo();
+ MachineMemOperand *MMO =
+ MF->getMachineMemOperand(MachinePointerInfo::getFixedStack(FI),
+ MachineMemOperand::MOLoad,
+ MFI.getObjectSize(FI),
+ MFI.getObjectAlignment(FI));
+
+ if (RC == &SP::I64RegsRegClass)
+ BuildMI(MBB, I, DL, get(SP::LDXri), DestReg).addFrameIndex(FI).addImm(0)
+ .addMemOperand(MMO);
+ else if (RC == &SP::IntRegsRegClass)
+ BuildMI(MBB, I, DL, get(SP::LDri), DestReg).addFrameIndex(FI).addImm(0)
+ .addMemOperand(MMO);
+ else if (RC == &SP::IntPairRegClass)
+ BuildMI(MBB, I, DL, get(SP::LDDri), DestReg).addFrameIndex(FI).addImm(0)
+ .addMemOperand(MMO);
+ else if (RC == &SP::FPRegsRegClass)
+ BuildMI(MBB, I, DL, get(SP::LDFri), DestReg).addFrameIndex(FI).addImm(0)
+ .addMemOperand(MMO);
+ else if (SP::DFPRegsRegClass.hasSubClassEq(RC))
+ BuildMI(MBB, I, DL, get(SP::LDDFri), DestReg).addFrameIndex(FI).addImm(0)
+ .addMemOperand(MMO);
+ else if (SP::QFPRegsRegClass.hasSubClassEq(RC))
+ // Use LDQFri irrespective of its legality. If LDQ is not legal, it will be
+ // lowered into two LDDs in eliminateFrameIndex.
+ BuildMI(MBB, I, DL, get(SP::LDQFri), DestReg).addFrameIndex(FI).addImm(0)
+ .addMemOperand(MMO);
else
llvm_unreachable("Can't load this register from stack slot");
}
MachineBasicBlock::iterator MBBI = FirstMBB.begin();
MachineRegisterInfo &RegInfo = MF->getRegInfo();
- GlobalBaseReg = RegInfo.createVirtualRegister(&SP::IntRegsRegClass);
-
+ const TargetRegisterClass *PtrRC =
+ Subtarget.is64Bit() ? &SP::I64RegsRegClass : &SP::IntRegsRegClass;
+ GlobalBaseReg = RegInfo.createVirtualRegister(PtrRC);
DebugLoc dl;
projects / oota-llvm.git / blobdiff