#include "ARMHazardRecognizer.h"
#include "ARMMachineFunctionInfo.h"
#include "MCTargetDesc/ARMAddressingModes.h"
-#include "llvm/Constants.h"
-#include "llvm/Function.h"
-#include "llvm/GlobalValue.h"
+#include "llvm/ADT/STLExtras.h"
#include "llvm/CodeGen/LiveVariables.h"
#include "llvm/CodeGen/MachineConstantPool.h"
#include "llvm/CodeGen/MachineFrameInfo.h"
#include "llvm/CodeGen/MachineMemOperand.h"
#include "llvm/CodeGen/MachineRegisterInfo.h"
#include "llvm/CodeGen/SelectionDAGNodes.h"
+#include "llvm/IR/Constants.h"
+#include "llvm/IR/Function.h"
+#include "llvm/IR/GlobalValue.h"
#include "llvm/MC/MCAsmInfo.h"
#include "llvm/Support/BranchProbability.h"
#include "llvm/Support/CommandLine.h"
#include "llvm/Support/Debug.h"
#include "llvm/Support/ErrorHandling.h"
-#include "llvm/ADT/STLExtras.h"
#define GET_INSTRINFO_CTOR
#include "ARMGenInstrInfo.inc"
const InstrItineraryData *II = TM->getInstrItineraryData();
return new ScoreboardHazardRecognizer(II, DAG, "pre-RA-sched");
}
- return TargetInstrInfoImpl::CreateTargetHazardRecognizer(TM, DAG);
+ return TargetInstrInfo::CreateTargetHazardRecognizer(TM, DAG);
}
ScheduleHazardRecognizer *ARMBaseInstrInfo::
if (Subtarget.isThumb2() || Subtarget.hasVFP2())
return (ScheduleHazardRecognizer *)
new ARMHazardRecognizer(II, *this, getRegisterInfo(), Subtarget, DAG);
- return TargetInstrInfoImpl::CreateTargetPostRAHazardRecognizer(II, DAG);
+ return TargetInstrInfo::CreateTargetPostRAHazardRecognizer(II, DAG);
}
MachineInstr *
unsigned Opc = MI->getOpcode();
if (isUncondBranchOpcode(Opc)) {
MI->setDesc(get(getMatchingCondBranchOpcode(Opc)));
- MI->addOperand(MachineOperand::CreateImm(Pred[0].getImm()));
- MI->addOperand(MachineOperand::CreateReg(Pred[1].getReg(), false));
+ MachineInstrBuilder(*MI->getParent()->getParent(), MI)
+ .addImm(Pred[0].getImm())
+ .addReg(Pred[1].getReg());
return true;
}
Opc = ARM::VMOVD, BeginIdx = ARM::dsub_0, SubRegs = 3;
else if (ARM::DQuadRegClass.contains(DestReg, SrcReg))
Opc = ARM::VMOVD, BeginIdx = ARM::dsub_0, SubRegs = 4;
+ else if (ARM::GPRPairRegClass.contains(DestReg, SrcReg))
+ Opc = ARM::MOVr, BeginIdx = ARM::gsub_0, SubRegs = 2;
else if (ARM::DPairSpcRegClass.contains(DestReg, SrcReg))
Opc = ARM::VMOVD, BeginIdx = ARM::dsub_0, SubRegs = 2, Spacing = 2;
AddDefaultPred(BuildMI(MBB, I, DL, get(ARM::VSTRD))
.addReg(SrcReg, getKillRegState(isKill))
.addFrameIndex(FI).addImm(0).addMemOperand(MMO));
+ } else if (ARM::GPRPairRegClass.hasSubClassEq(RC)) {
+ MachineInstrBuilder MIB =
+ AddDefaultPred(BuildMI(MBB, I, DL, get(ARM::STMIA))
+ .addFrameIndex(FI))
+ .addMemOperand(MMO);
+ MIB = AddDReg(MIB, SrcReg, ARM::gsub_0, getKillRegState(isKill), TRI);
+ AddDReg(MIB, SrcReg, ARM::gsub_1, 0, TRI);
} else
llvm_unreachable("Unknown reg class!");
break;
DebugLoc DL;
if (I != MBB.end()) DL = I->getDebugLoc();
MachineFunction &MF = *MBB.getParent();
+ ARMFunctionInfo *AFI = MF.getInfo<ARMFunctionInfo>();
MachineFrameInfo &MFI = *MF.getFrameInfo();
unsigned Align = MFI.getObjectAlignment(FI);
MachineMemOperand *MMO =
if (ARM::DPRRegClass.hasSubClassEq(RC)) {
AddDefaultPred(BuildMI(MBB, I, DL, get(ARM::VLDRD), DestReg)
.addFrameIndex(FI).addImm(0).addMemOperand(MMO));
+ } else if (ARM::GPRPairRegClass.hasSubClassEq(RC)) {
+ unsigned LdmOpc = AFI->isThumbFunction() ? ARM::t2LDMIA : ARM::LDMIA;
+ MachineInstrBuilder MIB =
+ AddDefaultPred(BuildMI(MBB, I, DL, get(LdmOpc))
+ .addFrameIndex(FI).addImm(0).addMemOperand(MMO));
+ MIB = AddDReg(MIB, DestReg, ARM::gsub_0, RegState::DefineNoRead, TRI);
+ MIB = AddDReg(MIB, DestReg, ARM::gsub_1, RegState::DefineNoRead, TRI);
+ if (TargetRegisterInfo::isPhysicalRegister(DestReg))
+ MIB.addReg(DestReg, RegState::ImplicitDefine);
} else
llvm_unreachable("Unknown reg class!");
break;
// copyPhysReg() calls. Look for VMOVS instructions that can legally be
// widened to VMOVD. We prefer the VMOVD when possible because it may be
// changed into a VORR that can go down the NEON pipeline.
- if (!WidenVMOVS || !MI->isCopy())
+ if (!WidenVMOVS || !MI->isCopy() || Subtarget.isCortexA15())
return false;
// Look for a copy between even S-registers. That is where we keep floats
// All clear, widen the COPY.
DEBUG(dbgs() << "widening: " << *MI);
+ MachineInstrBuilder MIB(*MI->getParent()->getParent(), MI);
// Get rid of the old <imp-def> of DstRegD. Leave it if it defines a Q-reg
// or some other super-register.
MI->setDesc(get(ARM::VMOVD));
MI->getOperand(0).setReg(DstRegD);
MI->getOperand(1).setReg(SrcRegD);
- AddDefaultPred(MachineInstrBuilder(MI));
+ AddDefaultPred(MIB);
// We are now reading SrcRegD instead of SrcRegS. This may upset the
// register scavenger and machine verifier, so we need to indicate that we
// are reading an undefined value from SrcRegD, but a proper value from
// SrcRegS.
MI->getOperand(1).setIsUndef();
- MachineInstrBuilder(MI).addReg(SrcRegS, RegState::Implicit);
+ MIB.addReg(SrcRegS, RegState::Implicit);
// SrcRegD may actually contain an unrelated value in the ssub_1
// sub-register. Don't kill it. Only kill the ssub_0 sub-register.
MachineInstr *
ARMBaseInstrInfo::duplicate(MachineInstr *Orig, MachineFunction &MF) const {
- MachineInstr *MI = TargetInstrInfoImpl::duplicate(Orig, MF);
+ MachineInstr *MI = TargetInstrInfo::duplicate(Orig, MF);
switch(Orig->getOpcode()) {
case ARM::tLDRpci_pic:
case ARM::t2LDRpci_pic: {
/// only return true if the base pointers are the same and the only differences
/// between the two addresses is the offset. It also returns the offsets by
/// reference.
+///
+/// FIXME: remove this in favor of the MachineInstr interface once pre-RA-sched
+/// is permanently disabled.
bool ARMBaseInstrInfo::areLoadsFromSameBasePtr(SDNode *Load1, SDNode *Load2,
int64_t &Offset1,
int64_t &Offset2) const {
/// from the common base address. It returns true if it decides it's desirable
/// to schedule the two loads together. "NumLoads" is the number of loads that
/// have already been scheduled after Load1.
+///
+/// FIXME: remove this in favor of the MachineInstr interface once pre-RA-sched
+/// is permanently disabled.
bool ARMBaseInstrInfo::shouldScheduleLoadsNear(SDNode *Load1, SDNode *Load2,
int64_t Offset1, int64_t Offset2,
unsigned NumLoads) const {
// MOVCC AL can't be inverted. Shouldn't happen.
if (CC == ARMCC::AL || PredReg != ARM::CPSR)
return NULL;
- MI = TargetInstrInfoImpl::commuteInstruction(MI, NewMI);
+ MI = TargetInstrInfo::commuteInstruction(MI, NewMI);
if (!MI)
return NULL;
// After swapping the MOVCC operands, also invert the condition.
return MI;
}
}
- return TargetInstrInfoImpl::commuteInstruction(MI, NewMI);
+ return TargetInstrInfo::commuteInstruction(MI, NewMI);
}
/// Identify instructions that can be folded into a MOVCC instruction, and
// same register as operand 0.
MachineOperand FalseReg = MI->getOperand(Invert ? 2 : 1);
FalseReg.setImplicit();
- NewMI->addOperand(FalseReg);
+ NewMI.addOperand(FalseReg);
NewMI->tieOperands(0, NewMI->getNumOperands() - 1);
// The caller will erase MI, but not DefMI.
case ARM::t2STMDB_UPD: {
unsigned NumRegs = MI->getNumOperands() - Desc.getNumOperands() + 1;
if (Subtarget.isSwift()) {
- // rdar://8402126
int UOps = 1 + NumRegs; // One for address computation, one for each ld / st.
switch (Opc) {
default: break;
// instructions).
if (Latency > 0 && Subtarget.isThumb2()) {
const MachineFunction *MF = DefMI->getParent()->getParent();
- if (MF->getFunction()->getFnAttributes().hasOptimizeForSizeAttr())
+ if (MF->getFunction()->getAttributes().
+ hasAttribute(AttributeSet::FunctionIndex,
+ Attribute::OptimizeForSize))
--Latency;
}
return Latency;
return Latency;
}
-unsigned
-ARMBaseInstrInfo::getOutputLatency(const InstrItineraryData *ItinData,
- const MachineInstr *DefMI, unsigned DefIdx,
- const MachineInstr *DepMI) const {
- unsigned Reg = DefMI->getOperand(DefIdx).getReg();
- if (DepMI->readsRegister(Reg, &getRegisterInfo()) || !isPredicated(DepMI))
- return 1;
-
- // If the second MI is predicated, then there is an implicit use dependency.
- return getInstrLatency(ItinData, DefMI);
-}
-
unsigned ARMBaseInstrInfo::getInstrLatency(const InstrItineraryData *ItinData,
const MachineInstr *MI,
unsigned *PredCost) const {
if (MI->getOpcode() == ARM::VMOVD && !isPredicated(MI))
return std::make_pair(ExeVFP, (1<<ExeVFP) | (1<<ExeNEON));
- // A9-like cores are particularly picky about mixing the two and want these
+ // CortexA9 is particularly picky about mixing the two and wants these
// converted.
- if (Subtarget.isLikeA9() && !isPredicated(MI) &&
+ if (Subtarget.isCortexA9() && !isPredicated(MI) &&
(MI->getOpcode() == ARM::VMOVRS ||
MI->getOpcode() == ARM::VMOVSR ||
MI->getOpcode() == ARM::VMOVS))
return DReg;
}
-/// getImplicitSPRUseForDPRUse - Given a use of a DPR register and lane,
+/// getImplicitSPRUseForDPRUse - Given a use of a DPR register and lane,
/// set ImplicitSReg to a register number that must be marked as implicit-use or
/// zero if no register needs to be defined as implicit-use.
///
/// not, it returns false.
///
/// This function handles cases where an instruction is being modified from taking
-/// an SPR to a DPR[Lane]. A use of the DPR is being added, which may conflict
+/// an SPR to a DPR[Lane]. A use of the DPR is being added, which may conflict
/// with an earlier def of an SPR corresponding to DPR[Lane^1] (i.e. the other
/// lane of the DPR).
///
/// If the other SPR is defined, an implicit-use of it should be added. Else,
/// (including the case where the DPR itself is defined), it should not.
-///
+///
static bool getImplicitSPRUseForDPRUse(const TargetRegisterInfo *TRI,
MachineInstr *MI,
unsigned DReg, unsigned Lane,
ARMBaseInstrInfo::setExecutionDomain(MachineInstr *MI, unsigned Domain) const {
unsigned DstReg, SrcReg, DReg;
unsigned Lane;
- MachineInstrBuilder MIB(MI);
+ MachineInstrBuilder MIB(*MI->getParent()->getParent(), MI);
const TargetRegisterInfo *TRI = &getRegisterInfo();
switch (MI->getOpcode()) {
default:
// VLD1DUPd32 - Writes all D-regs, no partial reg update, 2 uops.
//
// FCONSTD can be used as a dependency-breaking instruction.
-
-
unsigned ARMBaseInstrInfo::
getPartialRegUpdateClearance(const MachineInstr *MI,
unsigned OpNum,
const TargetRegisterInfo *TRI) const {
- // Only Swift has partial register update problems.
- if (!SwiftPartialUpdateClearance || !Subtarget.isSwift())
+ if (!SwiftPartialUpdateClearance ||
+ !(Subtarget.isSwift() || Subtarget.isCortexA15()))
return 0;
assert(TRI && "Need TRI instance");
case ARM::VLDRS:
case ARM::FCONSTS:
case ARM::VMOVSR:
- // rdar://problem/8791586
case ARM::VMOVv8i8:
case ARM::VMOVv4i16:
case ARM::VMOVv2i32:
// Explicitly reads the dependency.
case ARM::VLD1LNd32:
- UseOp = 1;
+ UseOp = 3;
break;
default:
return 0;
bool ARMBaseInstrInfo::hasNOP() const {
return (Subtarget.getFeatureBits() & ARM::HasV6T2Ops) != 0;
}
+
+bool ARMBaseInstrInfo::isSwiftFastImmShift(const MachineInstr *MI) const {
+ unsigned ShOpVal = MI->getOperand(3).getImm();
+ unsigned ShImm = ARM_AM::getSORegOffset(ShOpVal);
+ // Swift supports faster shifts for: lsl 2, lsl 1, and lsr 1.
+ if ((ShImm == 1 && ARM_AM::getSORegShOp(ShOpVal) == ARM_AM::lsr) ||
+ ((ShImm == 1 || ShImm == 2) &&
+ ARM_AM::getSORegShOp(ShOpVal) == ARM_AM::lsl))
+ return true;
+
+ return false;
+}
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