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Encode the multi-load/store instructions with their respective modes ('ia',

Browse Source 
'db', 'ib', 'da') instead of having that mode as a separate field in the
instruction. It's more convenient for the asm parser and much more readable for
humans.
<rdar://problem/8654088>


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@119310 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Bill Wendling
2010-11-16 01:16:36 +00:00
parent 88af6b9217
commit 73fe34a3ee
13 changed files with 568 additions and 542 deletions
Download Patch File Download Diff File Expand all files Collapse all files
lib/Target/ARM/ARMBaseInstrInfo.cpp
+135 -80
View File
@@ -697,10 +697,9 @@ storeRegToStackSlot(MachineBasicBlock &MBB, MachineBasicBlock::iterator I,
.addReg(SrcReg, getKillRegState(isKill))
.addMemOperand(MMO));
} else {
AddDefaultPred(BuildMI(MBB, I, DL, get(ARM::VSTMQ))
AddDefaultPred(BuildMI(MBB, I, DL, get(ARM::VSTMQIA))
.addReg(SrcReg, getKillRegState(isKill))
.addFrameIndex(FI)
.addImm(ARM_AM::getAM4ModeImm(ARM_AM::ia))
.addMemOperand(MMO));
}
break;
@@ -715,9 +714,8 @@ storeRegToStackSlot(MachineBasicBlock &MBB, MachineBasicBlock::iterator I,
.addMemOperand(MMO));
} else {
MachineInstrBuilder MIB =
AddDefaultPred(BuildMI(MBB, I, DL, get(ARM::VSTMD))
.addFrameIndex(FI)
.addImm(ARM_AM::getAM4ModeImm(ARM_AM::ia)))
AddDefaultPred(BuildMI(MBB, I, DL, get(ARM::VSTMDIA))
.addFrameIndex(FI))
.addMemOperand(MMO);
MIB = AddDReg(MIB, SrcReg, ARM::dsub_0, getKillRegState(isKill), TRI);
MIB = AddDReg(MIB, SrcReg, ARM::dsub_1, 0, TRI);
@@ -727,9 +725,8 @@ storeRegToStackSlot(MachineBasicBlock &MBB, MachineBasicBlock::iterator I,
break;
case ARM::QQQQPRRegClassID: {
MachineInstrBuilder MIB =
AddDefaultPred(BuildMI(MBB, I, DL, get(ARM::VSTMD))
.addFrameIndex(FI)
.addImm(ARM_AM::getAM4ModeImm(ARM_AM::ia)))
AddDefaultPred(BuildMI(MBB, I, DL, get(ARM::VSTMDIA))
.addFrameIndex(FI))
.addMemOperand(MMO);
MIB = AddDReg(MIB, SrcReg, ARM::dsub_0, getKillRegState(isKill), TRI);
MIB = AddDReg(MIB, SrcReg, ARM::dsub_1, 0, TRI);
@@ -781,10 +778,8 @@ ARMBaseInstrInfo::isStoreToStackSlot(const MachineInstr *MI,
return MI->getOperand(2).getReg();
}
break;
case ARM::VSTMQ:
case ARM::VSTMQIA:
if (MI->getOperand(1).isFI() &&
MI->getOperand(2).isImm() &&
MI->getOperand(2).getImm() == ARM_AM::getAM4ModeImm(ARM_AM::ia) &&
MI->getOperand(0).getSubReg() == 0) {
FrameIndex = MI->getOperand(1).getIndex();
return MI->getOperand(0).getReg();
@@ -841,9 +836,8 @@ loadRegFromStackSlot(MachineBasicBlock &MBB, MachineBasicBlock::iterator I,
.addFrameIndex(FI).addImm(16)
.addMemOperand(MMO));
} else {
AddDefaultPred(BuildMI(MBB, I, DL, get(ARM::VLDMQ), DestReg)
AddDefaultPred(BuildMI(MBB, I, DL, get(ARM::VLDMQIA), DestReg)
.addFrameIndex(FI)
.addImm(ARM_AM::getAM4ModeImm(ARM_AM::ia))
.addMemOperand(MMO));
}
break;
@@ -855,9 +849,8 @@ loadRegFromStackSlot(MachineBasicBlock &MBB, MachineBasicBlock::iterator I,
.addMemOperand(MMO));
} else {
MachineInstrBuilder MIB =
AddDefaultPred(BuildMI(MBB, I, DL, get(ARM::VLDMD))
.addFrameIndex(FI)
.addImm(ARM_AM::getAM4ModeImm(ARM_AM::ia)))
AddDefaultPred(BuildMI(MBB, I, DL, get(ARM::VLDMDIA))
.addFrameIndex(FI))
.addMemOperand(MMO);
MIB = AddDReg(MIB, DestReg, ARM::dsub_0, RegState::Define, TRI);
MIB = AddDReg(MIB, DestReg, ARM::dsub_1, RegState::Define, TRI);
@@ -867,9 +860,8 @@ loadRegFromStackSlot(MachineBasicBlock &MBB, MachineBasicBlock::iterator I,
break;
case ARM::QQQQPRRegClassID: {
MachineInstrBuilder MIB =
AddDefaultPred(BuildMI(MBB, I, DL, get(ARM::VLDMD))
.addFrameIndex(FI)
.addImm(ARM_AM::getAM4ModeImm(ARM_AM::ia)))
AddDefaultPred(BuildMI(MBB, I, DL, get(ARM::VLDMDIA))
.addFrameIndex(FI))
.addMemOperand(MMO);
MIB = AddDReg(MIB, DestReg, ARM::dsub_0, RegState::Define, TRI);
MIB = AddDReg(MIB, DestReg, ARM::dsub_1, RegState::Define, TRI);
@@ -921,10 +913,8 @@ ARMBaseInstrInfo::isLoadFromStackSlot(const MachineInstr *MI,
return MI->getOperand(0).getReg();
}
break;
case ARM::VLDMQ:
case ARM::VLDMQIA:
if (MI->getOperand(1).isFI() &&
MI->getOperand(2).isImm() &&
MI->getOperand(2).getImm() == ARM_AM::getAM4ModeImm(ARM_AM::ia) &&
MI->getOperand(0).getSubReg() == 0) {
FrameIndex = MI->getOperand(1).getIndex();
return MI->getOperand(0).getReg();
@@ -1583,46 +1573,75 @@ ARMBaseInstrInfo::getNumMicroOps(const InstrItineraryData *ItinData,
default:
llvm_unreachable("Unexpected multi-uops instruction!");
break;
case ARM::VLDMQ:
case ARM::VSTMQ:
case ARM::VLDMQIA:
case ARM::VLDMQDB:
case ARM::VSTMQIA:
case ARM::VSTMQDB:
return 2;
// The number of uOps for load / store multiple are determined by the number
// registers.
//
// On Cortex-A8, each pair of register loads / stores can be scheduled on the
// same cycle. The scheduling for the first load / store must be done
// separately by assuming the the address is not 64-bit aligned.
//
// On Cortex-A9, the formula is simply (#reg / 2) + (#reg % 2). If the address
// is not 64-bit aligned, then AGU would take an extra cycle.
// For VFP / NEON load / store multiple, the formula is
// (#reg / 2) + (#reg % 2) + 1.
case ARM::VLDMD:
case ARM::VLDMS:
case ARM::VLDMD_UPD:
case ARM::VLDMS_UPD:
case ARM::VSTMD:
case ARM::VSTMS:
case ARM::VSTMD_UPD:
case ARM::VSTMS_UPD: {
// is not 64-bit aligned, then AGU would take an extra cycle. For VFP / NEON
// load / store multiple, the formula is (#reg / 2) + (#reg % 2) + 1.
case ARM::VLDMDIA:
case ARM::VLDMDDB:
case ARM::VLDMDIA_UPD:
case ARM::VLDMDDB_UPD:
case ARM::VLDMSIA:
case ARM::VLDMSDB:
case ARM::VLDMSIA_UPD:
case ARM::VLDMSDB_UPD:
case ARM::VSTMDIA:
case ARM::VSTMDDB:
case ARM::VSTMDIA_UPD:
case ARM::VSTMDDB_UPD:
case ARM::VSTMSIA:
case ARM::VSTMSDB:
case ARM::VSTMSIA_UPD:
case ARM::VSTMSDB_UPD: {
unsigned NumRegs = MI->getNumOperands() - Desc.getNumOperands();
return (NumRegs / 2) + (NumRegs % 2) + 1;
}
case ARM::LDM_RET:
case ARM::LDM:
case ARM::LDM_UPD:
case ARM::STM:
case ARM::STM_UPD:
case ARM::tLDM:
case ARM::tLDM_UPD:
case ARM::tSTM_UPD:
case ARM::LDMIA_RET:
case ARM::LDMIA:
case ARM::LDMDA:
case ARM::LDMDB:
case ARM::LDMIB:
case ARM::LDMIA_UPD:
case ARM::LDMDA_UPD:
case ARM::LDMDB_UPD:
case ARM::LDMIB_UPD:
case ARM::STMIA:
case ARM::STMDA:
case ARM::STMDB:
case ARM::STMIB:
case ARM::STMIA_UPD:
case ARM::STMDA_UPD:
case ARM::STMDB_UPD:
case ARM::STMIB_UPD:
case ARM::tLDMIA:
case ARM::tLDMIA_UPD:
case ARM::tSTMIA:
case ARM::tSTMIA_UPD:
case ARM::tPOP_RET:
case ARM::tPOP:
case ARM::tPUSH:
case ARM::t2LDM_RET:
case ARM::t2LDM:
case ARM::t2LDM_UPD:
case ARM::t2STM:
case ARM::t2STM_UPD: {
case ARM::t2LDMIA_RET:
case ARM::t2LDMIA:
case ARM::t2LDMDB:
case ARM::t2LDMIA_UPD:
case ARM::t2LDMDB_UPD:
case ARM::t2STMIA:
case ARM::t2STMDB:
case ARM::t2STMIA_UPD:
case ARM::t2STMDB_UPD: {
unsigned NumRegs = MI->getNumOperands() - Desc.getNumOperands() + 1;
if (Subtarget.isCortexA8()) {
if (NumRegs < 4)
@@ -1669,13 +1688,17 @@ ARMBaseInstrInfo::getVLDMDefCycle(const InstrItineraryData *ItinData,
} else if (Subtarget.isCortexA9()) {
DefCycle = RegNo;
bool isSLoad = false;
switch (DefTID.getOpcode()) {
default: break;
case ARM::VLDMS:
case ARM::VLDMS_UPD:
case ARM::VLDMSIA:
case ARM::VLDMSDB:
case ARM::VLDMSIA_UPD:
case ARM::VLDMSDB_UPD:
isSLoad = true;
break;
}
// If there are odd number of 'S' registers or if it's not 64-bit aligned,
// then it takes an extra cycle.
if ((isSLoad && (RegNo % 2)) || DefAlign < 8)
@@ -1741,13 +1764,17 @@ ARMBaseInstrInfo::getVSTMUseCycle(const InstrItineraryData *ItinData,
} else if (Subtarget.isCortexA9()) {
UseCycle = RegNo;
bool isSStore = false;
switch (UseTID.getOpcode()) {
default: break;
case ARM::VSTMS:
case ARM::VSTMS_UPD:
case ARM::VSTMSIA:
case ARM::VSTMSDB:
case ARM::VSTMSIA_UPD:
case ARM::VSTMSDB_UPD:
isSStore = true;
break;
}
// If there are odd number of 'S' registers or if it's not 64-bit aligned,
// then it takes an extra cycle.
if ((isSStore && (RegNo % 2)) || UseAlign < 8)
@@ -1810,27 +1837,39 @@ ARMBaseInstrInfo::getOperandLatency(const InstrItineraryData *ItinData,
default:
DefCycle = ItinData->getOperandCycle(DefClass, DefIdx);
break;
case ARM::VLDMD:
case ARM::VLDMS:
case ARM::VLDMD_UPD:
case ARM::VLDMS_UPD: {
case ARM::VLDMDIA:
case ARM::VLDMDDB:
case ARM::VLDMDIA_UPD:
case ARM::VLDMDDB_UPD:
case ARM::VLDMSIA:
case ARM::VLDMSDB:
case ARM::VLDMSIA_UPD:
case ARM::VLDMSDB_UPD:
DefCycle = getVLDMDefCycle(ItinData, DefTID, DefClass, DefIdx, DefAlign);
break;
}
case ARM::LDM_RET:
case ARM::LDM:
case ARM::LDM_UPD:
case ARM::tLDM:
case ARM::tLDM_UPD:
case ARM::LDMIA_RET:
case ARM::LDMIA:
case ARM::LDMDA:
case ARM::LDMDB:
case ARM::LDMIB:
case ARM::LDMIA_UPD:
case ARM::LDMDA_UPD:
case ARM::LDMDB_UPD:
case ARM::LDMIB_UPD:
case ARM::tLDMIA:
case ARM::tLDMIA_UPD:
case ARM::tPUSH:
case ARM::t2LDM_RET:
case ARM::t2LDM:
case ARM::t2LDM_UPD: {
case ARM::t2LDMIA_RET:
case ARM::t2LDMIA:
case ARM::t2LDMDB:
case ARM::t2LDMIA_UPD:
case ARM::t2LDMDB_UPD:
LdmBypass = 1;
DefCycle = getLDMDefCycle(ItinData, DefTID, DefClass, DefIdx, DefAlign);
break;
}
}
if (DefCycle == -1)
// We can't seem to determine the result latency of the def, assume it's 2.
@@ -1841,24 +1880,37 @@ ARMBaseInstrInfo::getOperandLatency(const InstrItineraryData *ItinData,
default:
UseCycle = ItinData->getOperandCycle(UseClass, UseIdx);
break;
case ARM::VSTMD:
case ARM::VSTMS:
case ARM::VSTMD_UPD:
case ARM::VSTMS_UPD: {
case ARM::VSTMDIA:
case ARM::VSTMDDB:
case ARM::VSTMDIA_UPD:
case ARM::VSTMDDB_UPD:
case ARM::VSTMSIA:
case ARM::VSTMSDB:
case ARM::VSTMSIA_UPD:
case ARM::VSTMSDB_UPD:
UseCycle = getVSTMUseCycle(ItinData, UseTID, UseClass, UseIdx, UseAlign);
break;
}
case ARM::STM:
case ARM::STM_UPD:
case ARM::tSTM_UPD:
case ARM::STMIA:
case ARM::STMDA:
case ARM::STMDB:
case ARM::STMIB:
case ARM::STMIA_UPD:
case ARM::STMDA_UPD:
case ARM::STMDB_UPD:
case ARM::STMIB_UPD:
case ARM::tSTMIA:
case ARM::tSTMIA_UPD:
case ARM::tPOP_RET:
case ARM::tPOP:
case ARM::t2STM:
case ARM::t2STM_UPD: {
case ARM::t2STMIA:
case ARM::t2STMDB:
case ARM::t2STMIA_UPD:
case ARM::t2STMDB_UPD:
UseCycle = getSTMUseCycle(ItinData, UseTID, UseClass, UseIdx, UseAlign);
break;
}
}
if (UseCycle == -1)
// Assume it's read in the first stage.
@@ -1873,8 +1925,9 @@ ARMBaseInstrInfo::getOperandLatency(const InstrItineraryData *ItinData,
UseClass, UseIdx))
--UseCycle;
} else if (ItinData->hasPipelineForwarding(DefClass, DefIdx,
UseClass, UseIdx))
UseClass, UseIdx)) {
--UseCycle;
}
}
return UseCycle;
@@ -2040,8 +2093,10 @@ int ARMBaseInstrInfo::getInstrLatency(const InstrItineraryData *ItinData,
switch (Opcode) {
default:
return ItinData->getStageLatency(get(Opcode).getSchedClass());
case ARM::VLDMQ:
case ARM::VSTMQ:
case ARM::VLDMQIA:
case ARM::VLDMQDB:
case ARM::VSTMQIA:
case ARM::VSTMQDB:
return 2;
}
}
lib/Target/ARM/ARMExpandPseudoInsts.cpp
+21 -8
View File
@@ -782,24 +782,30 @@ bool ARMExpandPseudo::ExpandMBB(MachineBasicBlock &MBB) {
break;
}
case ARM::VLDMQ: {
case ARM::VLDMQIA:
case ARM::VLDMQDB: {
unsigned NewOpc = (Opcode == ARM::VLDMQIA) ? ARM::VLDMDIA : ARM::VLDMDDB;
MachineInstrBuilder MIB =
BuildMI(MBB, MBBI, MI.getDebugLoc(), TII->get(ARM::VLDMD));
BuildMI(MBB, MBBI, MI.getDebugLoc(), TII->get(NewOpc));
unsigned OpIdx = 0;
// Grab the Q register destination.
bool DstIsDead = MI.getOperand(OpIdx).isDead();
unsigned DstReg = MI.getOperand(OpIdx++).getReg();
// Copy the addrmode4 operands.
MIB.addOperand(MI.getOperand(OpIdx++));
// Copy the source register.
MIB.addOperand(MI.getOperand(OpIdx++));
// Copy the predicate operands.
MIB.addOperand(MI.getOperand(OpIdx++));
MIB.addOperand(MI.getOperand(OpIdx++));
// Add the destination operands (D subregs).
unsigned D0 = TRI->getSubReg(DstReg, ARM::dsub_0);
unsigned D1 = TRI->getSubReg(DstReg, ARM::dsub_1);
MIB.addReg(D0, RegState::Define | getDeadRegState(DstIsDead))
.addReg(D1, RegState::Define | getDeadRegState(DstIsDead));
// Add an implicit def for the super-register.
MIB.addReg(DstReg, RegState::ImplicitDefine | getDeadRegState(DstIsDead));
TransferImpOps(MI, MIB, MIB);
@@ -807,26 +813,33 @@ bool ARMExpandPseudo::ExpandMBB(MachineBasicBlock &MBB) {
break;
}
case ARM::VSTMQ: {
case ARM::VSTMQIA:
case ARM::VSTMQDB: {
unsigned NewOpc = (Opcode == ARM::VSTMQIA) ? ARM::VSTMDIA : ARM::VSTMDDB;
MachineInstrBuilder MIB =
BuildMI(MBB, MBBI, MI.getDebugLoc(), TII->get(ARM::VSTMD));
BuildMI(MBB, MBBI, MI.getDebugLoc(), TII->get(NewOpc));
unsigned OpIdx = 0;
// Grab the Q register source.
bool SrcIsKill = MI.getOperand(OpIdx).isKill();
unsigned SrcReg = MI.getOperand(OpIdx++).getReg();
// Copy the addrmode4 operands.
MIB.addOperand(MI.getOperand(OpIdx++));
// Copy the destination register.
MIB.addOperand(MI.getOperand(OpIdx++));
// Copy the predicate operands.
MIB.addOperand(MI.getOperand(OpIdx++));
MIB.addOperand(MI.getOperand(OpIdx++));
// Add the source operands (D subregs).
unsigned D0 = TRI->getSubReg(SrcReg, ARM::dsub_0);
unsigned D1 = TRI->getSubReg(SrcReg, ARM::dsub_1);
MIB.addReg(D0).addReg(D1);
if (SrcIsKill)
// Add an implicit kill for the Q register.
(*MIB).addRegisterKilled(SrcReg, TRI, true);
TransferImpOps(MI, MIB, MIB);
MI.eraseFromParent();
break;
lib/Target/ARM/ARMInstrInfo.td
+29 -63
View File
@@ -1194,18 +1194,6 @@ let isBranch = 1, isTerminator = 1, isBarrier = 1, isIndirectBranch = 1 in {
}
}
// FIXME: remove when we have a way to marking a MI with these properties.
// FIXME: Should pc be an implicit operand like PICADD, etc?
let isReturn = 1, isTerminator = 1, isBarrier = 1, mayLoad = 1,
hasExtraDefRegAllocReq = 1, isCodeGenOnly = 1 in
def LDM_RET : AXI4ld<(outs GPR:$wb), (ins GPR:$Rn, ldstm_mode:$mode, pred:$p,
reglist:$dsts, variable_ops),
IndexModeUpd, LdStMulFrm, IIC_iLoad_mBr,
"ldm${mode}${p}\t$Rn!, $dsts",
"$Rn = $wb", []> {
let Inst{21} = 1;
}
// On non-Darwin platforms R9 is callee-saved.
let isCall = 1,
Defs = [R0, R1, R2, R3, R12, LR,
@@ -1797,23 +1785,23 @@ def STRHT: AI3sthpo<(outs GPR:$base_wb),
multiclass arm_ldst_mult<string asm, bit L_bit, Format f,
InstrItinClass itin, InstrItinClass itin_upd> {
def ia :
def IA :
AXI4<(outs), (ins GPR:$Rn, pred:$p, reglist:$regs, variable_ops),
IndexModeNone, f, itin,
!strconcat(asm, "${p}\t$Rn, $regs"), "", []> {
!strconcat(asm, "ia${p}\t$Rn, $regs"), "", []> {
let Inst{24-23} = 0b01; // Increment After
let Inst{21} = 0; // No writeback
let Inst{20} = L_bit;
}
def ia_UPD :
def IA_UPD :
AXI4<(outs GPR:$wb), (ins GPR:$Rn, pred:$p, reglist:$regs, variable_ops),
IndexModeUpd, f, itin_upd,
!strconcat(asm, "${p}\t$Rn!, $regs"), "$Rn = $wb", []> {
!strconcat(asm, "ia${p}\t$Rn!, $regs"), "$Rn = $wb", []> {
let Inst{24-23} = 0b01; // Increment After
let Inst{21} = 1; // No writeback
let Inst{21} = 1; // Writeback
let Inst{20} = L_bit;
}
def da :
def DA :
AXI4<(outs), (ins GPR:$Rn, pred:$p, reglist:$regs, variable_ops),
IndexModeNone, f, itin,
!strconcat(asm, "da${p}\t$Rn, $regs"), "", []> {
@@ -1821,15 +1809,15 @@ multiclass arm_ldst_mult<string asm, bit L_bit, Format f,
let Inst{21} = 0; // No writeback
let Inst{20} = L_bit;
}
def da_UPD :
def DA_UPD :
AXI4<(outs GPR:$wb), (ins GPR:$Rn, pred:$p, reglist:$regs, variable_ops),
IndexModeUpd, f, itin_upd,
!strconcat(asm, "da${p}\t$Rn!, $regs"), "$Rn = $wb", []> {
let Inst{24-23} = 0b00; // Decrement After
let Inst{21} = 1; // No writeback
let Inst{21} = 1; // Writeback
let Inst{20} = L_bit;
}
def db :
def DB :
AXI4<(outs), (ins GPR:$Rn, pred:$p, reglist:$regs, variable_ops),
IndexModeNone, f, itin,
!strconcat(asm, "db${p}\t$Rn, $regs"), "", []> {
@@ -1837,15 +1825,15 @@ multiclass arm_ldst_mult<string asm, bit L_bit, Format f,
let Inst{21} = 0; // No writeback
let Inst{20} = L_bit;
}
def db_UPD :
def DB_UPD :
AXI4<(outs GPR:$wb), (ins GPR:$Rn, pred:$p, reglist:$regs, variable_ops),
IndexModeUpd, f, itin_upd,
!strconcat(asm, "db${p}\t$Rn!, $regs"), "$Rn = $wb", []> {
let Inst{24-23} = 0b10; // Decrement Before
let Inst{21} = 1; // No writeback
let Inst{21} = 1; // Writeback
let Inst{20} = L_bit;
}
def ib :
def IB :
AXI4<(outs), (ins GPR:$Rn, pred:$p, reglist:$regs, variable_ops),
IndexModeNone, f, itin,
!strconcat(asm, "ib${p}\t$Rn, $regs"), "", []> {
@@ -1853,17 +1841,16 @@ multiclass arm_ldst_mult<string asm, bit L_bit, Format f,
let Inst{21} = 0; // No writeback
let Inst{20} = L_bit;
}
def ib_UPD :
def IB_UPD :
AXI4<(outs GPR:$wb), (ins GPR:$Rn, pred:$p, reglist:$regs, variable_ops),
IndexModeUpd, f, itin_upd,
!strconcat(asm, "ib${p}\t$Rn!, $regs"), "$Rn = $wb", []> {
let Inst{24-23} = 0b11; // Increment Before
let Inst{21} = 1; // No writeback
let Inst{21} = 1; // Writeback
let Inst{20} = L_bit;
}
}
/* TODO:
let neverHasSideEffects = 1 in {
let mayLoad = 1, hasExtraDefRegAllocReq = 1 in
@@ -1873,45 +1860,24 @@ let mayStore = 1, hasExtraSrcRegAllocReq = 1 in
defm STM : arm_ldst_mult<"stm", 0, LdStMulFrm, IIC_iStore_m, IIC_iStore_mu>;
} // neverHasSideEffects
*/
let mayLoad = 1, neverHasSideEffects = 1, hasExtraDefRegAllocReq = 1,
isCodeGenOnly = 1 in {
def LDM : AXI4ld<(outs), (ins GPR:$Rn, ldstm_mode:$amode, pred:$p,
reglist:$dsts, variable_ops),
IndexModeNone, LdStMulFrm, IIC_iLoad_m,
"ldm${amode}${p}\t$Rn, $dsts", "", []> {
let Inst{21} = 0;
// Load / Store Multiple Mnemnoic Aliases
def : MnemonicAlias<"ldm", "ldmia">;
def : MnemonicAlias<"stm", "stmia">;
// FIXME: remove when we have a way to marking a MI with these properties.
// FIXME: Should pc be an implicit operand like PICADD, etc?
let isReturn = 1, isTerminator = 1, isBarrier = 1, mayLoad = 1,
hasExtraDefRegAllocReq = 1, isCodeGenOnly = 1 in
def LDMIA_RET : AXI4ld<(outs GPR:$wb), (ins GPR:$Rn, pred:$p,
reglist:$dsts, variable_ops),
IndexModeUpd, LdStMulFrm, IIC_iLoad_mBr,
"ldmia${p}\t$Rn!, $dsts",
"$Rn = $wb", []> {
let Inst{24-23} = 0b01; // Increment After
let Inst{21} = 1; // Writeback
}
def LDM_UPD : AXI4ld<(outs GPR:$wb), (ins GPR:$Rn, ldstm_mode:$amode, pred:$p,
reglist:$dsts, variable_ops),
IndexModeUpd, LdStMulFrm, IIC_iLoad_mu,
"ldm${amode}${p}\t$Rn!, $dsts",
"$Rn = $wb", []> {
let Inst{21} = 1;
}
} // mayLoad, neverHasSideEffects, hasExtraDefRegAllocReq
let mayStore = 1, neverHasSideEffects = 1, hasExtraSrcRegAllocReq = 1,
isCodeGenOnly = 1 in {
def STM : AXI4st<(outs), (ins GPR:$Rn, ldstm_mode:$amode, pred:$p,
reglist:$srcs, variable_ops),
IndexModeNone, LdStMulFrm, IIC_iStore_m,
"stm${amode}${p}\t$Rn, $srcs", "", []> {
let Inst{21} = 0;
}
def STM_UPD : AXI4st<(outs GPR:$wb), (ins GPR:$Rn, ldstm_mode:$amode, pred:$p,
reglist:$srcs, variable_ops),
IndexModeUpd, LdStMulFrm, IIC_iStore_mu,
"stm${amode}${p}\t$Rn!, $srcs",
"$Rn = $wb", []> {
bits<4> p;
let Inst{31-28} = p;
let Inst{21} = 1;
}
} // mayStore, neverHasSideEffects, hasExtraSrcRegAllocReq
//===----------------------------------------------------------------------===//
// Move Instructions.
lib/Target/ARM/ARMInstrNEON.td
+12 -4
View File
@@ -142,15 +142,23 @@ def nModImm : Operand<i32> {
// Use VLDM to load a Q register as a D register pair.
// This is a pseudo instruction that is expanded to VLDMD after reg alloc.
def VLDMQ
: PseudoVFPLdStM<(outs QPR:$dst), (ins GPR:$Rn, ldstm_mode:$mode),
def VLDMQIA
: PseudoVFPLdStM<(outs QPR:$dst), (ins GPR:$Rn),
IIC_fpLoad_m, "",
[(set QPR:$dst, (v2f64 (load GPR:$Rn)))]>;
def VLDMQDB
: PseudoVFPLdStM<(outs QPR:$dst), (ins GPR:$Rn),
IIC_fpLoad_m, "",
[(set QPR:$dst, (v2f64 (load GPR:$Rn)))]>;
// Use VSTM to store a Q register as a D register pair.
// This is a pseudo instruction that is expanded to VSTMD after reg alloc.
def VSTMQ
: PseudoVFPLdStM<(outs), (ins QPR:$src, GPR:$Rn, ldstm_mode:$mode),
def VSTMQIA
: PseudoVFPLdStM<(outs), (ins QPR:$src, GPR:$Rn),
IIC_fpStore_m, "",
[(store (v2f64 QPR:$src), GPR:$Rn)]>;
def VSTMQDB
: PseudoVFPLdStM<(outs), (ins QPR:$src, GPR:$Rn),
IIC_fpStore_m, "",
[(store (v2f64 QPR:$src), GPR:$Rn)]>;
lib/Target/ARM/ARMInstrThumb.td
+5 -35
View File
@@ -539,17 +539,17 @@ def tSpill : T1pIs<(outs), (ins tGPR:$src, t_addrmode_sp:$addr), IIC_iStore_i,
multiclass thumb_ldst_mult<string asm, InstrItinClass itin,
InstrItinClass itin_upd, bits<6> T1Enc,
bit L_bit> {
def ia :
def IA :
T1I<(outs), (ins GPR:$Rn, pred:$p, reglist:$regs, variable_ops),
itin, !strconcat(asm, "${p}\t$Rn, $regs"), []>,
itin, !strconcat(asm, "ia${p}\t$Rn, $regs"), []>,
T1Encoding<T1Enc>;
def ia_UPD :
def IA_UPD :
T1It<(outs GPR:$wb), (ins GPR:$Rn, pred:$p, reglist:$regs, variable_ops),
itin_upd, !strconcat(asm, "${p}\t$Rn!, $regs"), "$Rn = $wb", []>,
itin_upd, !strconcat(asm, "ia${p}\t$Rn!, $regs"), "$Rn = $wb", []>,
T1Encoding<T1Enc>;
}
/* TODO: Uncommented, this causes a decoding conflict.
// These require base address to be written back or one of the loaded regs.
let neverHasSideEffects = 1 in {
let mayLoad = 1, hasExtraDefRegAllocReq = 1 in
@@ -561,36 +561,6 @@ defm tSTM : thumb_ldst_mult<"stm", IIC_iStore_m, IIC_iStore_mu,
{1,1,0,0,0,?}, 0>;
} // neverHasSideEffects
*/
// These require base address to be written back or one of the loaded regs.
let mayLoad = 1, neverHasSideEffects = 1, hasExtraDefRegAllocReq = 1,
isCodeGenOnly = 1 in {
def tLDM : T1I<(outs),
(ins GPR:$Rn, ldstm_mode:$amode, pred:$p, reglist:$dsts,
variable_ops),
IIC_iLoad_m,
"ldm${amode}${p}\t$Rn, $dsts", []>,
T1Encoding<{1,1,0,0,1,?}>; // A6.2 & A8.6.53
def tLDM_UPD : T1It<(outs tGPR:$wb),
(ins GPR:$Rn, ldstm_mode:$amode, pred:$p, reglist:$dsts,
variable_ops),
IIC_iLoad_m,
"ldm${amode}${p}\t$Rn!, $dsts",
"$Rn = $wb", []>,
T1Encoding<{1,1,0,0,1,?}>; // A6.2 & A8.6.53
} // mayLoad, neverHasSideEffects = 1, hasExtraDefRegAllocReq
let mayStore = 1, neverHasSideEffects = 1, hasExtraSrcRegAllocReq = 1,
isCodeGenOnly = 1 in
def tSTM_UPD : T1It<(outs tGPR:$wb),
(ins GPR:$Rn, ldstm_mode:$amode, pred:$p, reglist:$srcs,
variable_ops),
IIC_iStore_mu,
"stm${amode}${p}\t$Rn!, $srcs",
"$Rn = $wb", []>,
T1Encoding<{1,1,0,0,0,?}>; // A6.2 & A8.6.189
let mayLoad = 1, Uses = [SP], Defs = [SP], hasExtraDefRegAllocReq = 1 in
def tPOP : T1I<(outs), (ins pred:$p, reglist:$dsts, variable_ops),
lib/Target/ARM/ARMInstrThumb2.td
+11 -69
View File
@@ -1501,9 +1501,9 @@ defm t2PLI : T2Ipl<0, 1, "pli">, Requires<[IsThumb2,HasV7]>;
multiclass thumb2_ldst_mult<string asm, InstrItinClass itin,
InstrItinClass itin_upd, bit L_bit> {
def ia :
def IA :
T2XI<(outs), (ins GPR:$Rn, pred:$p, reglist:$regs, variable_ops),
itin, !strconcat(asm, "${p}.w\t$Rn, $regs"), []> {
itin, !strconcat(asm, "ia${p}.w\t$Rn, $regs"), []> {
bits<4> Rn;
bits<16> regs;
@@ -1516,9 +1516,9 @@ multiclass thumb2_ldst_mult<string asm, InstrItinClass itin,
let Inst{19-16} = Rn;
let Inst{15-0} = regs;
}
def ia_UPD :
def IA_UPD :
T2XIt<(outs GPR:$wb), (ins GPR:$Rn, pred:$p, reglist:$regs, variable_ops),
itin_upd, !strconcat(asm, "${p}.w\t$Rn!, $regs"), "$Rn = $wb", []> {
itin_upd, !strconcat(asm, "ia${p}.w\t$Rn!, $regs"), "$Rn = $wb", []> {
bits<4> Rn;
bits<16> regs;
@@ -1531,7 +1531,7 @@ multiclass thumb2_ldst_mult<string asm, InstrItinClass itin,
let Inst{19-16} = Rn;
let Inst{15-0} = regs;
}
def db :
def DB :
T2XI<(outs), (ins GPR:$Rn, pred:$p, reglist:$regs, variable_ops),
itin, !strconcat(asm, "db${p}.w\t$Rn, $regs"), []> {
bits<4> Rn;
@@ -1546,7 +1546,7 @@ multiclass thumb2_ldst_mult<string asm, InstrItinClass itin,
let Inst{19-16} = Rn;
let Inst{15-0} = regs;
}
def db_UPD :
def DB_UPD :
T2XIt<(outs GPR:$wb), (ins GPR:$Rn, pred:$p, reglist:$regs, variable_ops),
itin_upd, !strconcat(asm, "db${p}.w\t$Rn, $regs"), "$Rn = $wb", []> {
bits<4> Rn;
@@ -1563,7 +1563,6 @@ multiclass thumb2_ldst_mult<string asm, InstrItinClass itin,
}
}
/* TODO:
let neverHasSideEffects = 1 in {
let mayLoad = 1, hasExtraDefRegAllocReq = 1 in
@@ -1573,61 +1572,7 @@ let mayStore = 1, hasExtraSrcRegAllocReq = 1 in
defm t2STM : thumb2_ldst_mult<"stm", IIC_iStore_m, IIC_iStore_mu, 0>;
} // neverHasSideEffects
*/
let mayLoad = 1, neverHasSideEffects = 1, hasExtraDefRegAllocReq = 1,
isCodeGenOnly = 1 in {
def t2LDM : T2XI<(outs), (ins GPR:$Rn, ldstm_mode:$amode, pred:$p,
reglist:$dsts, variable_ops), IIC_iLoad_m,
"ldm${amode}${p}.w\t$Rn, $dsts", []> {
let Inst{31-27} = 0b11101;
let Inst{26-25} = 0b00;
let Inst{24-23} = {?, ?}; // IA: '01', DB: '10'
let Inst{22} = 0;
let Inst{21} = 0; // The W bit.
let Inst{20} = 1; // Load
}
def t2LDM_UPD : T2XIt<(outs GPR:$wb), (ins GPR:$Rn, ldstm_mode:$amode, pred:$p,
reglist:$dsts, variable_ops),
IIC_iLoad_mu,
"ldm${amode}${p}.w\t$Rn!, $dsts",
"$Rn = $wb", []> {
let Inst{31-27} = 0b11101;
let Inst{26-25} = 0b00;
let Inst{24-23} = {?, ?}; // IA: '01', DB: '10'
let Inst{22} = 0;
let Inst{21} = 1; // The W bit.
let Inst{20} = 1; // Load
}
} // mayLoad, neverHasSideEffects, hasExtraDefRegAllocReq
let mayStore = 1, neverHasSideEffects = 1, hasExtraSrcRegAllocReq = 1,
isCodeGenOnly = 1 in {
def t2STM : T2XI<(outs), (ins GPR:$Rn, ldstm_mode:$amode, pred:$p,
reglist:$srcs, variable_ops), IIC_iStore_m,
"stm${amode}${p}.w\t$Rn, $srcs", []> {
let Inst{31-27} = 0b11101;
let Inst{26-25} = 0b00;
let Inst{24-23} = {?, ?}; // IA: '01', DB: '10'
let Inst{22} = 0;
let Inst{21} = 0; // The W bit.
let Inst{20} = 0; // Store
}
def t2STM_UPD : T2XIt<(outs GPR:$wb), (ins GPR:$Rn, ldstm_mode:$amode, pred:$p,
reglist:$srcs, variable_ops),
IIC_iStore_m,
"stm${amode}${p}.w\t$Rn!, $srcs",
"$Rn = $wb", []> {
let Inst{31-27} = 0b11101;
let Inst{26-25} = 0b00;
let Inst{24-23} = {?, ?}; // IA: '01', DB: '10'
let Inst{22} = 0;
let Inst{21} = 1; // The W bit.
let Inst{20} = 0; // Store
}
} // mayStore, neverHasSideEffects, hasExtraSrcRegAllocReq
//===----------------------------------------------------------------------===//
// Move Instructions.
@@ -2814,17 +2759,14 @@ let Defs =
// FIXME: Should pc be an implicit operand like PICADD, etc?
let isReturn = 1, isTerminator = 1, isBarrier = 1, mayLoad = 1,
hasExtraDefRegAllocReq = 1, isCodeGenOnly = 1 in
def t2LDM_RET: T2XIt<(outs GPR:$wb), (ins GPR:$Rn, ldstm_mode:$amode, pred:$p,
def t2LDMIA_RET: T2XIt<(outs GPR:$wb), (ins GPR:$Rn, pred:$p,
reglist:$dsts, variable_ops),
IIC_iLoad_mBr,
"ldm${amode}${p}.w\t$Rn!, $dsts",
"ldmia${p}.w\t$Rn!, $dsts",
"$Rn = $wb", []> {
let Inst{31-27} = 0b11101;
let Inst{26-25} = 0b00;
let Inst{24-23} = {?, ?}; // IA: '01', DB: '10'
let Inst{22} = 0;
let Inst{21} = 1; // The W bit.
let Inst{20} = 1; // Load
let Inst{24-23} = 0b01; // IA: '01', DB: '10'
let Inst{21} = 1; // The W bit.
let Inst{20} = 1; // Load
}
let isBranch = 1, isTerminator = 1, isBarrier = 1 in {
lib/Target/ARM/ARMInstrVFP.td
+20 -99
View File
@@ -74,25 +74,26 @@ def VSTRS : ASI5<0b1101, 0b00, (outs), (ins SPR:$Sd, addrmode5:$addr),
// Load / store multiple Instructions.
//
multiclass vfp_ldst_d_mult<string asm, bit L_bit,
InstrItinClass itin, InstrItinClass itin_upd> {
def ia :
multiclass vfp_ldst_mult<string asm, bit L_bit,
InstrItinClass itin, InstrItinClass itin_upd> {
// Double Precision
def DIA :
AXDI4<(outs), (ins GPR:$Rn, pred:$p, reglist:$regs, variable_ops),
IndexModeNone, itin,
!strconcat(asm, "${p}\t$Rn, $regs"), "", []> {
!strconcat(asm, "ia${p}\t$Rn, $regs"), "", []> {
let Inst{24-23} = 0b01; // Increment After
let Inst{21} = 0; // No writeback
let Inst{20} = L_bit;
}
def ia_UPD :
def DIA_UPD :
AXDI4<(outs GPR:$wb), (ins GPR:$Rn, pred:$p, reglist:$regs, variable_ops),
IndexModeUpd, itin_upd,
!strconcat(asm, "${p}\t$Rn!, $regs"), "$Rn = $wb", []> {
!strconcat(asm, "ia${p}\t$Rn!, $regs"), "$Rn = $wb", []> {
let Inst{24-23} = 0b01; // Increment After
let Inst{21} = 1; // Writeback
let Inst{20} = L_bit;
}
def db :
def DDB :
AXDI4<(outs), (ins GPR:$Rn, pred:$p, reglist:$regs, variable_ops),
IndexModeNone, itin,
!strconcat(asm, "db${p}\t$Rn, $regs"), "", []> {
@@ -100,7 +101,7 @@ multiclass vfp_ldst_d_mult<string asm, bit L_bit,
let Inst{21} = 0; // No writeback
let Inst{20} = L_bit;
}
def db_UPD :
def DDB_UPD :
AXDI4<(outs GPR:$wb), (ins GPR:$Rn, pred:$p, reglist:$regs, variable_ops),
IndexModeUpd, itin_upd,
!strconcat(asm, "db${p}\t$Rn!, $regs"), "$Rn = $wb", []> {
@@ -108,27 +109,25 @@ multiclass vfp_ldst_d_mult<string asm, bit L_bit,
let Inst{21} = 1; // Writeback
let Inst{20} = L_bit;
}
}
multiclass vfp_ldst_s_mult<string asm, bit L_bit,
InstrItinClass itin, InstrItinClass itin_upd> {
def ia :
// Single Precision
def SIA :
AXSI4<(outs), (ins GPR:$Rn, pred:$p, reglist:$regs, variable_ops),
IndexModeNone, itin,
!strconcat(asm, "${p}\t$Rn, $regs"), "", []> {
!strconcat(asm, "ia${p}\t$Rn, $regs"), "", []> {
let Inst{24-23} = 0b01; // Increment After
let Inst{21} = 0; // No writeback
let Inst{20} = L_bit;
}
def ia_UPD :
def SIA_UPD :
AXSI4<(outs GPR:$wb), (ins GPR:$Rn, pred:$p, reglist:$regs, variable_ops),
IndexModeUpd, itin_upd,
!strconcat(asm, "${p}\t$Rn!, $regs"), "$Rn = $wb", []> {
!strconcat(asm, "ia${p}\t$Rn!, $regs"), "$Rn = $wb", []> {
let Inst{24-23} = 0b01; // Increment After
let Inst{21} = 1; // Writeback
let Inst{20} = L_bit;
}
def db :
def SDB :
AXSI4<(outs), (ins GPR:$Rn, pred:$p, reglist:$regs, variable_ops),
IndexModeNone, itin,
!strconcat(asm, "db${p}\t$Rn, $regs"), "", []> {
@@ -136,7 +135,7 @@ multiclass vfp_ldst_s_mult<string asm, bit L_bit,
let Inst{21} = 0; // No writeback
let Inst{20} = L_bit;
}
def db_UPD :
def SDB_UPD :
AXSI4<(outs GPR:$wb), (ins GPR:$Rn, pred:$p, reglist:$regs, variable_ops),
IndexModeUpd, itin_upd,
!strconcat(asm, "db${p}\t$Rn!, $regs"), "$Rn = $wb", []> {
@@ -148,92 +147,14 @@ multiclass vfp_ldst_s_mult<string asm, bit L_bit,
let neverHasSideEffects = 1 in {
let mayLoad = 1, hasExtraDefRegAllocReq = 1 in {
defm VLDMD : vfp_ldst_d_mult<"vldm", 1, IIC_fpLoad_m, IIC_fpLoad_mu>;
defm VLDMS : vfp_ldst_s_mult<"vldm", 1, IIC_fpLoad_m, IIC_fpLoad_mu>;
} // mayLoad, hasExtraDefRegAllocReq
let mayLoad = 1, hasExtraDefRegAllocReq = 1 in
defm VLDM : vfp_ldst_mult<"vldm", 1, IIC_fpLoad_m, IIC_fpLoad_mu>;
let mayStore = 1, hasExtraSrcRegAllocReq = 1 in {
defm VSTMD : vfp_ldst_d_mult<"vstm", 0, IIC_fpLoad_m, IIC_fpLoad_mu>;
defm VSTMS : vfp_ldst_s_mult<"vstm", 0, IIC_fpLoad_m, IIC_fpLoad_mu>;
} // mayStore, hasExtraSrcRegAllocReq
let mayStore = 1, hasExtraSrcRegAllocReq = 1 in
defm VSTM : vfp_ldst_mult<"vstm", 0, IIC_fpLoad_m, IIC_fpLoad_mu>;
} // neverHasSideEffects
let mayLoad = 1, neverHasSideEffects = 1, hasExtraDefRegAllocReq = 1,
isCodeGenOnly = 1 in {
def VLDMD : AXDI4<(outs), (ins GPR:$Rn, ldstm_mode:$amode, pred:$p,
reglist:$dsts, variable_ops),
IndexModeNone, IIC_fpLoad_m,
"vldm${amode}${p}\t$Rn, $dsts", "", []> {
let Inst{21} = 0; // wback = (W == '1')
let Inst{20} = 1; // Load
}
def VLDMS : AXSI4<(outs), (ins GPR:$Rn, ldstm_mode:$amode, pred:$p,
reglist:$dsts, variable_ops),
IndexModeNone, IIC_fpLoad_m,
"vldm${amode}${p}\t$Rn, $dsts", "", []> {
let Inst{21} = 0; // wback = (W == '1')
let Inst{20} = 1; // Load
}
def VLDMD_UPD : AXDI4<(outs GPR:$wb), (ins GPR:$Rn, ldstm_mode:$amode, pred:$p,
reglist:$dsts, variable_ops),
IndexModeUpd, IIC_fpLoad_mu,
"vldm${amode}${p}\t$Rn!, $dsts",
"$Rn = $wb", []> {
let Inst{21} = 1; // wback = (W == '1')
let Inst{20} = 1; // Load
}
def VLDMS_UPD : AXSI4<(outs GPR:$wb), (ins GPR:$Rn, ldstm_mode:$amode, pred:$p,
reglist:$dsts, variable_ops),
IndexModeUpd, IIC_fpLoad_mu,
"vldm${amode}${p}\t$Rn!, $dsts",
"$Rn = $wb", []> {
let Inst{21} = 1; // wback = (W == '1')
let Inst{20} = 1; // Load
}
} // mayLoad, neverHasSideEffects, hasExtraDefRegAllocReq
let mayStore = 1, neverHasSideEffects = 1, hasExtraSrcRegAllocReq = 1,
isCodeGenOnly = 1 in {
def VSTMD : AXDI4<(outs), (ins GPR:$Rn, ldstm_mode:$amode, pred:$p,
reglist:$srcs, variable_ops),
IndexModeNone, IIC_fpStore_m,
"vstm${amode}${p}\t$Rn, $srcs", "", []> {
let Inst{21} = 0; // wback = (W == '1')
let Inst{20} = 0; // Store
}
def VSTMS : AXSI4<(outs), (ins GPR:$Rn, ldstm_mode:$amode, pred:$p,
reglist:$srcs, variable_ops), IndexModeNone,
IIC_fpStore_m,
"vstm${amode}${p}\t$Rn, $srcs", "", []> {
let Inst{21} = 0; // wback = (W == '1')
let Inst{20} = 0; // Store
}
def VSTMD_UPD : AXDI4<(outs GPR:$wb), (ins GPR:$Rn, ldstm_mode:$amode, pred:$p,
reglist:$srcs, variable_ops),
IndexModeUpd, IIC_fpStore_mu,
"vstm${amode}${p}\t$Rn!, $srcs",
"$Rn = $wb", []> {
let Inst{21} = 1; // wback = (W == '1')
let Inst{20} = 0; // Store
}
def VSTMS_UPD : AXSI4<(outs GPR:$wb), (ins GPR:$Rn, ldstm_mode:$amode, pred:$p,
reglist:$srcs, variable_ops),
IndexModeUpd, IIC_fpStore_mu,
"vstm${amode}${p}\t$Rn!, $srcs",
"$Rn = $wb", []> {
let Inst{21} = 1; // wback = (W == '1')
let Inst{20} = 0; // Store
}
} // mayStore, neverHasSideEffects, hasExtraSrcRegAllocReq
// FLDMX, FSTMX - mixing S/D registers for pre-armv6 cores
//===----------------------------------------------------------------------===//
lib/Target/ARM/ARMLoadStoreOptimizer.cpp
+236 -67
View File
@@ -128,39 +128,119 @@ namespace {
char ARMLoadStoreOpt::ID = 0;
}
static int getLoadStoreMultipleOpcode(int Opcode) {
static int getLoadStoreMultipleOpcode(int Opcode, ARM_AM::AMSubMode Mode) {
switch (Opcode) {
default: llvm_unreachable("Unhandled opcode!");
case ARM::LDRi12:
++NumLDMGened;
return ARM::LDM;
switch (Mode) {
default: llvm_unreachable("Unhandled submode!");
case ARM_AM::ia: return ARM::LDMIA;
case ARM_AM::da: return ARM::LDMDA;
case ARM_AM::db: return ARM::LDMDB;
case ARM_AM::ib: return ARM::LDMIB;
}
break;
case ARM::STRi12:
++NumSTMGened;
return ARM::STM;
switch (Mode) {
default: llvm_unreachable("Unhandled submode!");
case ARM_AM::ia: return ARM::STMIA;
case ARM_AM::da: return ARM::STMDA;
case ARM_AM::db: return ARM::STMDB;
case ARM_AM::ib: return ARM::STMIB;
}
break;
case ARM::t2LDRi8:
case ARM::t2LDRi12:
++NumLDMGened;
return ARM::t2LDM;
switch (Mode) {
default: llvm_unreachable("Unhandled submode!");
case ARM_AM::ia: return ARM::t2LDMIA;
case ARM_AM::db: return ARM::t2LDMDB;
}
break;
case ARM::t2STRi8:
case ARM::t2STRi12:
++NumSTMGened;
return ARM::t2STM;
switch (Mode) {
default: llvm_unreachable("Unhandled submode!");
case ARM_AM::ia: return ARM::t2STMIA;
case ARM_AM::db: return ARM::t2STMDB;
}
break;
case ARM::VLDRS:
++NumVLDMGened;
return ARM::VLDMS;
switch (Mode) {
default: llvm_unreachable("Unhandled submode!");
case ARM_AM::ia: return ARM::VLDMSIA;
case ARM_AM::db: return ARM::VLDMSDB;
}
break;
case ARM::VSTRS:
++NumVSTMGened;
return ARM::VSTMS;
switch (Mode) {
default: llvm_unreachable("Unhandled submode!");
case ARM_AM::ia: return ARM::VSTMSIA;
case ARM_AM::db: return ARM::VSTMSDB;
}
break;
case ARM::VLDRD:
++NumVLDMGened;
return ARM::VLDMD;
switch (Mode) {
default: llvm_unreachable("Unhandled submode!");
case ARM_AM::ia: return ARM::VLDMDIA;
case ARM_AM::db: return ARM::VLDMDDB;
}
break;
case ARM::VSTRD:
++NumVSTMGened;
return ARM::VSTMD;
default: llvm_unreachable("Unhandled opcode!");
switch (Mode) {
default: llvm_unreachable("Unhandled submode!");
case ARM_AM::ia: return ARM::VSTMDIA;
case ARM_AM::db: return ARM::VSTMDDB;
}
break;
}
return 0;
}
static ARM_AM::AMSubMode getLoadStoreMultipleSubMode(int Opcode) {
switch (Opcode) {
default: llvm_unreachable("Unhandled opcode!");
case ARM::LDMIA:
case ARM::STMIA:
case ARM::t2LDMIA:
case ARM::t2STMIA:
case ARM::VLDMSIA:
case ARM::VSTMSIA:
case ARM::VLDMDIA:
case ARM::VSTMDIA:
return ARM_AM::ia;
case ARM::LDMDA:
case ARM::STMDA:
return ARM_AM::da;
case ARM::LDMDB:
case ARM::STMDB:
case ARM::t2LDMDB:
case ARM::t2STMDB:
case ARM::VLDMSDB:
case ARM::VSTMSDB:
case ARM::VLDMDDB:
case ARM::VSTMDDB:
return ARM_AM::db;
case ARM::LDMIB:
case ARM::STMIB:
return ARM_AM::ib;
}
return ARM_AM::bad_am_submode;
}
static bool isT2i32Load(unsigned Opc) {
return Opc == ARM::t2LDRi12 || Opc == ARM::t2LDRi8;
}
@@ -245,10 +325,10 @@ ARMLoadStoreOpt::MergeOps(MachineBasicBlock &MBB,
bool isDef = (isi32Load(Opcode) || Opcode == ARM::VLDRS ||
Opcode == ARM::VLDRD);
Opcode = getLoadStoreMultipleOpcode(Opcode);
Opcode = getLoadStoreMultipleOpcode(Opcode, Mode);
MachineInstrBuilder MIB = BuildMI(MBB, MBBI, dl, TII->get(Opcode))
.addReg(Base, getKillRegState(BaseKill))
.addImm(ARM_AM::getAM4ModeImm(Mode)).addImm(Pred).addReg(PredReg);
.addImm(Pred).addReg(PredReg);
for (unsigned i = 0; i != NumRegs; ++i)
MIB = MIB.addReg(Regs[i].first, getDefRegState(isDef)
| getKillRegState(Regs[i].second));
@@ -452,31 +532,109 @@ static inline unsigned getLSMultipleTransferSize(MachineInstr *MI) {
case ARM::VLDRD:
case ARM::VSTRD:
return 8;
case ARM::LDM:
case ARM::STM:
case ARM::t2LDM:
case ARM::t2STM:
case ARM::VLDMS:
case ARM::VSTMS:
case ARM::LDMIA:
case ARM::LDMDA:
case ARM::LDMDB:
case ARM::LDMIB:
case ARM::STMIA:
case ARM::STMDA:
case ARM::STMDB:
case ARM::STMIB:
case ARM::t2LDMIA:
case ARM::t2LDMDB:
case ARM::t2STMIA:
case ARM::t2STMDB:
case ARM::VLDMSIA:
case ARM::VLDMSDB:
case ARM::VSTMSIA:
case ARM::VSTMSDB:
return (MI->getNumOperands() - MI->getDesc().getNumOperands() + 1) * 4;
case ARM::VLDMD:
case ARM::VSTMD:
case ARM::VLDMDIA:
case ARM::VLDMDDB:
case ARM::VSTMDIA:
case ARM::VSTMDDB:
return (MI->getNumOperands() - MI->getDesc().getNumOperands() + 1) * 8;
}
}
static unsigned getUpdatingLSMultipleOpcode(unsigned Opc) {
static unsigned getUpdatingLSMultipleOpcode(unsigned Opc,
ARM_AM::AMSubMode Mode) {
switch (Opc) {
case ARM::LDM: return ARM::LDM_UPD;
case ARM::STM: return ARM::STM_UPD;
case ARM::t2LDM: return ARM::t2LDM_UPD;
case ARM::t2STM: return ARM::t2STM_UPD;
case ARM::VLDMS: return ARM::VLDMS_UPD;
case ARM::VLDMD: return ARM::VLDMD_UPD;
case ARM::VSTMS: return ARM::VSTMS_UPD;
case ARM::VSTMD: return ARM::VSTMD_UPD;
default: llvm_unreachable("Unhandled opcode!");
case ARM::LDMIA:
case ARM::LDMDA:
case ARM::LDMDB:
case ARM::LDMIB:
switch (Mode) {
default: llvm_unreachable("Unhandled submode!");
case ARM_AM::ia: return ARM::LDMIA_UPD;
case ARM_AM::ib: return ARM::LDMIB_UPD;
case ARM_AM::da: return ARM::LDMDA_UPD;
case ARM_AM::db: return ARM::LDMDB_UPD;
}
break;
case ARM::STMIA:
case ARM::STMDA:
case ARM::STMDB:
case ARM::STMIB:
switch (Mode) {
default: llvm_unreachable("Unhandled submode!");
case ARM_AM::ia: return ARM::STMIA_UPD;
case ARM_AM::ib: return ARM::STMIB_UPD;
case ARM_AM::da: return ARM::STMDA_UPD;
case ARM_AM::db: return ARM::STMDB_UPD;
}
break;
case ARM::t2LDMIA:
case ARM::t2LDMDB:
switch (Mode) {
default: llvm_unreachable("Unhandled submode!");
case ARM_AM::ia: return ARM::t2LDMIA_UPD;
case ARM_AM::db: return ARM::t2LDMDB_UPD;
}
break;
case ARM::t2STMIA:
case ARM::t2STMDB:
switch (Mode) {
default: llvm_unreachable("Unhandled submode!");
case ARM_AM::ia: return ARM::t2STMIA_UPD;
case ARM_AM::db: return ARM::t2STMDB_UPD;
}
break;
case ARM::VLDMSIA:
case ARM::VLDMSDB:
switch (Mode) {
default: llvm_unreachable("Unhandled submode!");
case ARM_AM::ia: return ARM::VLDMSIA_UPD;
case ARM_AM::db: return ARM::VLDMSDB_UPD;
}
break;
case ARM::VLDMDIA:
case ARM::VLDMDDB:
switch (Mode) {
default: llvm_unreachable("Unhandled submode!");
case ARM_AM::ia: return ARM::VLDMDIA_UPD;
case ARM_AM::db: return ARM::VLDMDDB_UPD;
}
break;
case ARM::VSTMSIA:
case ARM::VSTMSDB:
switch (Mode) {
default: llvm_unreachable("Unhandled submode!");
case ARM_AM::ia: return ARM::VSTMSIA_UPD;
case ARM_AM::db: return ARM::VSTMSDB_UPD;
}
break;
case ARM::VSTMDIA:
case ARM::VSTMDDB:
switch (Mode) {
default: llvm_unreachable("Unhandled submode!");
case ARM_AM::ia: return ARM::VSTMDIA_UPD;
case ARM_AM::db: return ARM::VSTMDDB_UPD;
}
break;
}
return 0;
}
@@ -505,16 +663,14 @@ bool ARMLoadStoreOpt::MergeBaseUpdateLSMultiple(MachineBasicBlock &MBB,
int Opcode = MI->getOpcode();
DebugLoc dl = MI->getDebugLoc();
bool DoMerge = false;
ARM_AM::AMSubMode Mode = ARM_AM::ia;
// Can't use an updating ld/st if the base register is also a dest
// register. e.g. ldmdb r0!, {r0, r1, r2}. The behavior is undefined.
for (unsigned i = 3, e = MI->getNumOperands(); i != e; ++i) {
for (unsigned i = 2, e = MI->getNumOperands(); i != e; ++i)
if (MI->getOperand(i).getReg() == Base)
return false;
}
Mode = ARM_AM::getAM4SubMode(MI->getOperand(1).getImm());
bool DoMerge = false;
ARM_AM::AMSubMode Mode = getLoadStoreMultipleSubMode(Opcode);
// Try merging with the previous instruction.
MachineBasicBlock::iterator BeginMBBI = MBB.begin();
@@ -560,15 +716,16 @@ bool ARMLoadStoreOpt::MergeBaseUpdateLSMultiple(MachineBasicBlock &MBB,
if (!DoMerge)
return false;
unsigned NewOpc = getUpdatingLSMultipleOpcode(Opcode);
unsigned NewOpc = getUpdatingLSMultipleOpcode(Opcode, Mode);
MachineInstrBuilder MIB = BuildMI(MBB, MBBI, dl, TII->get(NewOpc))
.addReg(Base, getDefRegState(true)) // WB base register
.addReg(Base, getKillRegState(BaseKill))
.addImm(ARM_AM::getAM4ModeImm(Mode))
.addImm(Pred).addReg(PredReg);
// Transfer the rest of operands.
for (unsigned OpNum = 4, e = MI->getNumOperands(); OpNum != e; ++OpNum)
for (unsigned OpNum = 3, e = MI->getNumOperands(); OpNum != e; ++OpNum)
MIB.addOperand(MI->getOperand(OpNum));
// Transfer memoperands.
(*MIB).setMemRefs(MI->memoperands_begin(), MI->memoperands_end());
@@ -576,14 +733,21 @@ bool ARMLoadStoreOpt::MergeBaseUpdateLSMultiple(MachineBasicBlock &MBB,
return true;
}
static unsigned getPreIndexedLoadStoreOpcode(unsigned Opc) {
static unsigned getPreIndexedLoadStoreOpcode(unsigned Opc,
ARM_AM::AddrOpc Mode) {
switch (Opc) {
case ARM::LDRi12: return ARM::LDR_PRE;
case ARM::STRi12: return ARM::STR_PRE;
case ARM::VLDRS: return ARM::VLDMS_UPD;
case ARM::VLDRD: return ARM::VLDMD_UPD;
case ARM::VSTRS: return ARM::VSTMS_UPD;
case ARM::VSTRD: return ARM::VSTMD_UPD;
case ARM::LDRi12:
return ARM::LDR_PRE;
case ARM::STRi12:
return ARM::STR_PRE;
case ARM::VLDRS:
return Mode == ARM_AM::add ? ARM::VLDMSIA_UPD : ARM::VLDMSDB_UPD;
case ARM::VLDRD:
return Mode == ARM_AM::add ? ARM::VLDMDIA_UPD : ARM::VLDMDDB_UPD;
case ARM::VSTRS:
return Mode == ARM_AM::add ? ARM::VSTMSIA_UPD : ARM::VSTMSDB_UPD;
case ARM::VSTRD:
return Mode == ARM_AM::add ? ARM::VSTMDIA_UPD : ARM::VSTMDDB_UPD;
case ARM::t2LDRi8:
case ARM::t2LDRi12:
return ARM::t2LDR_PRE;
@@ -595,14 +759,21 @@ static unsigned getPreIndexedLoadStoreOpcode(unsigned Opc) {
return 0;
}
static unsigned getPostIndexedLoadStoreOpcode(unsigned Opc) {
static unsigned getPostIndexedLoadStoreOpcode(unsigned Opc,
ARM_AM::AddrOpc Mode) {
switch (Opc) {
case ARM::LDRi12: return ARM::LDR_POST;
case ARM::STRi12: return ARM::STR_POST;
case ARM::VLDRS: return ARM::VLDMS_UPD;
case ARM::VLDRD: return ARM::VLDMD_UPD;
case ARM::VSTRS: return ARM::VSTMS_UPD;
case ARM::VSTRD: return ARM::VSTMD_UPD;
case ARM::LDRi12:
return ARM::LDR_POST;
case ARM::STRi12:
return ARM::STR_POST;
case ARM::VLDRS:
return Mode == ARM_AM::add ? ARM::VLDMSIA_UPD : ARM::VLDMSDB_UPD;
case ARM::VLDRD:
return Mode == ARM_AM::add ? ARM::VLDMDIA_UPD : ARM::VLDMDDB_UPD;
case ARM::VSTRS:
return Mode == ARM_AM::add ? ARM::VSTMSIA_UPD : ARM::VSTMSDB_UPD;
case ARM::VSTRD:
return Mode == ARM_AM::add ? ARM::VSTMDIA_UPD : ARM::VSTMDDB_UPD;
case ARM::t2LDRi8:
case ARM::t2LDRi12:
return ARM::t2LDR_POST;
@@ -664,7 +835,7 @@ bool ARMLoadStoreOpt::MergeBaseUpdateLoadStore(MachineBasicBlock &MBB,
DoMerge = true;
}
if (DoMerge) {
NewOpc = getPreIndexedLoadStoreOpcode(Opcode);
NewOpc = getPreIndexedLoadStoreOpcode(Opcode, AddSub);
MBB.erase(PrevMBBI);
}
}
@@ -683,7 +854,7 @@ bool ARMLoadStoreOpt::MergeBaseUpdateLoadStore(MachineBasicBlock &MBB,
DoMerge = true;
}
if (DoMerge) {
NewOpc = getPostIndexedLoadStoreOpcode(Opcode);
NewOpc = getPostIndexedLoadStoreOpcode(Opcode, AddSub);
if (NextMBBI == I) {
Advance = true;
++I;
@@ -696,12 +867,9 @@ bool ARMLoadStoreOpt::MergeBaseUpdateLoadStore(MachineBasicBlock &MBB,
return false;
unsigned Offset = 0;
if (isAM5)
Offset = ARM_AM::getAM4ModeImm(AddSub == ARM_AM::sub ?
ARM_AM::db : ARM_AM::ia);
else if (isAM2)
if (isAM2)
Offset = ARM_AM::getAM2Opc(AddSub, Bytes, ARM_AM::no_shift);
else
else if (!isAM5)
Offset = AddSub == ARM_AM::sub ? -Bytes : Bytes;
if (isAM5) {
@@ -713,7 +881,6 @@ bool ARMLoadStoreOpt::MergeBaseUpdateLoadStore(MachineBasicBlock &MBB,
BuildMI(MBB, MBBI, dl, TII->get(NewOpc))
.addReg(Base, getDefRegState(true)) // WB base register
.addReg(Base, getKillRegState(isLd ? BaseKill : false))
.addImm(Offset)
.addImm(Pred).addReg(PredReg)
.addReg(MO.getReg(), (isLd ? getDefRegState(true) :
getKillRegState(MO.isKill())));
@@ -897,12 +1064,11 @@ bool ARMLoadStoreOpt::FixInvalidRegPairOp(MachineBasicBlock &MBB,
// Ascending register numbers and no offset. It's safe to change it to a
// ldm or stm.
unsigned NewOpc = (isLd)
? (isT2 ? ARM::t2LDM : ARM::LDM)
: (isT2 ? ARM::t2STM : ARM::STM);
? (isT2 ? ARM::t2LDMIA : ARM::LDMIA)
: (isT2 ? ARM::t2STMIA : ARM::STMIA);
if (isLd) {
BuildMI(MBB, MBBI, MBBI->getDebugLoc(), TII->get(NewOpc))
.addReg(BaseReg, getKillRegState(BaseKill))
.addImm(ARM_AM::getAM4ModeImm(ARM_AM::ia))
.addImm(Pred).addReg(PredReg)
.addReg(EvenReg, getDefRegState(isLd) | getDeadRegState(EvenDeadKill))
.addReg(OddReg, getDefRegState(isLd) | getDeadRegState(OddDeadKill));
@@ -910,7 +1076,6 @@ bool ARMLoadStoreOpt::FixInvalidRegPairOp(MachineBasicBlock &MBB,
} else {
BuildMI(MBB, MBBI, MBBI->getDebugLoc(), TII->get(NewOpc))
.addReg(BaseReg, getKillRegState(BaseKill))
.addImm(ARM_AM::getAM4ModeImm(ARM_AM::ia))
.addImm(Pred).addReg(PredReg)
.addReg(EvenReg,
getKillRegState(EvenDeadKill) | getUndefRegState(EvenUndef))
@@ -1164,12 +1329,16 @@ bool ARMLoadStoreOpt::MergeReturnIntoLDM(MachineBasicBlock &MBB) {
MBBI->getOpcode() == ARM::tBX_RET ||
MBBI->getOpcode() == ARM::MOVPCLR)) {
MachineInstr *PrevMI = prior(MBBI);
if (PrevMI->getOpcode() == ARM::LDM_UPD ||
PrevMI->getOpcode() == ARM::t2LDM_UPD) {
unsigned Opcode = PrevMI->getOpcode();
if (Opcode == ARM::LDMIA_UPD || Opcode == ARM::LDMDA_UPD ||
Opcode == ARM::LDMDB_UPD || Opcode == ARM::LDMIB_UPD ||
Opcode == ARM::t2LDMIA_UPD || Opcode == ARM::t2LDMDB_UPD) {
MachineOperand &MO = PrevMI->getOperand(PrevMI->getNumOperands()-1);
if (MO.getReg() != ARM::LR)
return false;
unsigned NewOpc = isThumb2 ? ARM::t2LDM_RET : ARM::LDM_RET;
unsigned NewOpc = (isThumb2 ? ARM::t2LDMIA_RET : ARM::LDMIA_RET);
assert(((isThumb2 && Opcode == ARM::t2LDMIA_UPD) ||
Opcode == ARM::LDMIA_UPD) && "Unsupported multiple load-return!");
PrevMI->setDesc(TII->get(NewOpc));
MO.setReg(ARM::PC);
PrevMI->copyImplicitOps(&*MBBI);
lib/Target/ARM/Disassembler/ARMDisassemblerCore.cpp
+17 -15
View File
@@ -1306,30 +1306,28 @@ static bool DisassembleLdStMulFrm(MCInst &MI, unsigned Opcode, uint32_t insn,
unsigned short NumOps, unsigned &NumOpsAdded, BO B) {
assert(NumOps >= 5 && "LdStMulFrm expects NumOps >= 5");
unsigned &OpIdx = NumOpsAdded;
OpIdx = 0;
NumOpsAdded = 0;
unsigned Base = getRegisterEnum(B, ARM::GPRRegClassID, decodeRn(insn));
// Writeback to base, if necessary.
if (Opcode == ARM::LDM_UPD || Opcode == ARM::STM_UPD) {
if (Opcode == ARM::LDMIA_UPD || Opcode == ARM::STMIA_UPD ||
Opcode == ARM::LDMDA_UPD || Opcode == ARM::STMDA_UPD ||
Opcode == ARM::LDMDB_UPD || Opcode == ARM::STMDB_UPD ||
Opcode == ARM::LDMIB_UPD || Opcode == ARM::STMIB_UPD) {
MI.addOperand(MCOperand::CreateReg(Base));
++OpIdx;
++NumOpsAdded;
}
// Add the base register operand.
MI.addOperand(MCOperand::CreateReg(Base));
ARM_AM::AMSubMode SubMode = getAMSubModeForBits(getPUBits(insn));
MI.addOperand(MCOperand::CreateImm(ARM_AM::getAM4ModeImm(SubMode)));
// Handling the two predicate operands before the reglist.
int64_t CondVal = insn >> ARMII::CondShift;
MI.addOperand(MCOperand::CreateImm(CondVal == 0xF ? 0xE : CondVal));
MI.addOperand(MCOperand::CreateReg(ARM::CPSR));
OpIdx += 4;
NumOpsAdded += 3;
// Fill the variadic part of reglist.
unsigned RegListBits = insn & ((1 << 16) - 1);
@@ -1337,7 +1335,7 @@ static bool DisassembleLdStMulFrm(MCInst &MI, unsigned Opcode, uint32_t insn,
if ((RegListBits >> i) & 1) {
MI.addOperand(MCOperand::CreateReg(getRegisterEnum(B, ARM::GPRRegClassID,
i)));
++OpIdx;
++NumOpsAdded;
}
}
@@ -1882,8 +1880,10 @@ static bool DisassembleVFPLdStMulFrm(MCInst &MI, unsigned Opcode, uint32_t insn,
unsigned Base = getRegisterEnum(B, ARM::GPRRegClassID, decodeRn(insn));
// Writeback to base, if necessary.
if (Opcode == ARM::VLDMD_UPD || Opcode == ARM::VLDMS_UPD ||
Opcode == ARM::VSTMD_UPD || Opcode == ARM::VSTMS_UPD) {
if (Opcode == ARM::VLDMDIA_UPD || Opcode == ARM::VLDMSIA_UPD ||
Opcode == ARM::VLDMDDB_UPD || Opcode == ARM::VLDMSDB_UPD ||
Opcode == ARM::VSTMDIA_UPD || Opcode == ARM::VSTMSIA_UPD ||
Opcode == ARM::VSTMDDB_UPD || Opcode == ARM::VSTMSDB_UPD) {
MI.addOperand(MCOperand::CreateReg(Base));
++OpIdx;
}
@@ -1906,8 +1906,10 @@ static bool DisassembleVFPLdStMulFrm(MCInst &MI, unsigned Opcode, uint32_t insn,
OpIdx += 4;
bool isSPVFP = (Opcode == ARM::VLDMS || Opcode == ARM::VLDMS_UPD ||
Opcode == ARM::VSTMS || Opcode == ARM::VSTMS_UPD);
bool isSPVFP = (Opcode == ARM::VLDMSIA || Opcode == ARM::VLDMSDB ||
Opcode == ARM::VLDMSIA_UPD || Opcode == ARM::VLDMSDB_UPD ||
Opcode == ARM::VSTMSIA || Opcode == ARM::VSTMSDB ||
Opcode == ARM::VSTMSIA_UPD || Opcode == ARM::VSTMSDB_UPD);
unsigned RegClassID = isSPVFP ? ARM::SPRRegClassID : ARM::DPRRegClassID;
// Extract Dd/Sd.
lib/Target/ARM/Disassembler/ThumbDisassemblerCore.h
+29 -42
View File
@@ -833,40 +833,32 @@ static bool DisassembleThumb1Misc(MCInst &MI, unsigned Opcode, uint32_t insn,
// A8.6.53 LDM / LDMIA
// A8.6.189 STM / STMIA
//
// tLDM_UPD/tSTM_UPD: tRt tRt AM4ModeImm Pred-Imm Pred-CCR register_list
// tLDM: tRt AM4ModeImm Pred-Imm Pred-CCR register_list
// tLDMIA_UPD/tSTMIA_UPD: tRt tRt AM4ModeImm Pred-Imm Pred-CCR register_list
// tLDMIA: tRt AM4ModeImm Pred-Imm Pred-CCR register_list
static bool DisassembleThumb1LdStMul(bool Ld, MCInst &MI, unsigned Opcode,
uint32_t insn, unsigned short NumOps, unsigned &NumOpsAdded, BO B) {
assert((Opcode == ARM::tLDM || Opcode == ARM::tLDM_UPD ||
Opcode == ARM::tSTM_UPD) && "Unexpected opcode");
unsigned &OpIdx = NumOpsAdded;
uint32_t insn, unsigned short NumOps,
unsigned &NumOpsAdded, BO B) {
assert((Opcode == ARM::tLDMIA || Opcode == ARM::tLDMIA_UPD ||
Opcode == ARM::tSTMIA_UPD) && "Unexpected opcode");
unsigned tRt = getT1tRt(insn);
OpIdx = 0;
NumOpsAdded = 0;
// WB register, if necessary.
if (Opcode == ARM::tLDM_UPD || Opcode == ARM::tSTM_UPD) {
if (Opcode == ARM::tLDMIA_UPD || Opcode == ARM::tSTMIA_UPD) {
MI.addOperand(MCOperand::CreateReg(getRegisterEnum(B, ARM::GPRRegClassID,
tRt)));
++OpIdx;
++NumOpsAdded;
}
MI.addOperand(MCOperand::CreateReg(getRegisterEnum(B, ARM::GPRRegClassID,
tRt)));
++OpIdx;
// A8.6.53 LDM / LDMIA / LDMFD - Encoding T1
// A8.6.53 STM / STMIA / STMEA - Encoding T1
MI.addOperand(MCOperand::CreateImm(ARM_AM::getAM4ModeImm(ARM_AM::ia)));
++OpIdx;
++NumOpsAdded;
// Handling the two predicate operands before the reglist.
if (B->DoPredicateOperands(MI, Opcode, insn, NumOps))
OpIdx += 2;
else {
if (B->DoPredicateOperands(MI, Opcode, insn, NumOps)) {
NumOpsAdded += 2;
} else {
DEBUG(errs() << "Expected predicate operands not found.\n");
return false;
}
@@ -874,13 +866,12 @@ static bool DisassembleThumb1LdStMul(bool Ld, MCInst &MI, unsigned Opcode,
unsigned RegListBits = slice(insn, 7, 0);
// Fill the variadic part of reglist.
for (unsigned i = 0; i < 8; ++i) {
for (unsigned i = 0; i < 8; ++i)
if ((RegListBits >> i) & 1) {
MI.addOperand(MCOperand::CreateReg(getRegisterEnum(B, ARM::tGPRRegClassID,
i)));
++OpIdx;
++NumOpsAdded;
}
}
return true;
}
@@ -1122,34 +1113,31 @@ static bool DisassembleThumb2LdStMul(MCInst &MI, unsigned Opcode, uint32_t insn,
if (Thumb2RFEOpcode(Opcode))
return DisassembleThumb2RFE(MI, Opcode, insn, NumOps, NumOpsAdded, B);
assert((Opcode == ARM::t2LDM || Opcode == ARM::t2LDM_UPD ||
Opcode == ARM::t2STM || Opcode == ARM::t2STM_UPD)
assert((Opcode == ARM::t2LDMIA || Opcode == ARM::t2LDMIA_UPD ||
Opcode == ARM::t2LDMDB || Opcode == ARM::t2LDMDB_UPD ||
Opcode == ARM::t2STMIA || Opcode == ARM::t2STMIA_UPD ||
Opcode == ARM::t2STMDB || Opcode == ARM::t2STMDB_UPD)
&& "Unexpected opcode");
assert(NumOps >= 5 && "Thumb2 LdStMul expects NumOps >= 5");
unsigned &OpIdx = NumOpsAdded;
OpIdx = 0;
NumOpsAdded = 0;
unsigned Base = getRegisterEnum(B, ARM::GPRRegClassID, decodeRn(insn));
// Writeback to base.
if (Opcode == ARM::t2LDM_UPD || Opcode == ARM::t2STM_UPD) {
if (Opcode == ARM::t2LDMIA_UPD || Opcode == ARM::t2LDMDB_UPD ||
Opcode == ARM::t2STMIA_UPD || Opcode == ARM::t2STMDB_UPD) {
MI.addOperand(MCOperand::CreateReg(Base));
++OpIdx;
++NumOpsAdded;
}
MI.addOperand(MCOperand::CreateReg(Base));
++OpIdx;
ARM_AM::AMSubMode SubMode = getAMSubModeForBits(getPUBits(insn));
MI.addOperand(MCOperand::CreateImm(ARM_AM::getAM4ModeImm(SubMode)));
++OpIdx;
++NumOpsAdded;
// Handling the two predicate operands before the reglist.
if (B->DoPredicateOperands(MI, Opcode, insn, NumOps))
OpIdx += 2;
else {
if (B->DoPredicateOperands(MI, Opcode, insn, NumOps)) {
NumOpsAdded += 2;
} else {
DEBUG(errs() << "Expected predicate operands not found.\n");
return false;
}
@@ -1157,13 +1145,12 @@ static bool DisassembleThumb2LdStMul(MCInst &MI, unsigned Opcode, uint32_t insn,
unsigned RegListBits = insn & ((1 << 16) - 1);
// Fill the variadic part of reglist.
for (unsigned i = 0; i < 16; ++i) {
for (unsigned i = 0; i < 16; ++i)
if ((RegListBits >> i) & 1) {
MI.addOperand(MCOperand::CreateReg(getRegisterEnum(B, ARM::GPRRegClassID,
i)));
++OpIdx;
++NumOpsAdded;
}
}
return true;
}
lib/Target/ARM/InstPrinter/ARMInstPrinter.cpp
+24 -36
View File
@@ -63,55 +63,43 @@ void ARMInstPrinter::printInst(const MCInst *MI, raw_ostream &O) {
}
// A8.6.123 PUSH
if ((Opcode == ARM::STM_UPD || Opcode == ARM::t2STM_UPD) &&
if ((Opcode == ARM::STMDB_UPD || Opcode == ARM::t2STMDB_UPD) &&
MI->getOperand(0).getReg() == ARM::SP) {
const MCOperand &MO1 = MI->getOperand(2);
if (ARM_AM::getAM4SubMode(MO1.getImm()) == ARM_AM::db) {
O << '\t' << "push";
printPredicateOperand(MI, 3, O);
O << '\t';
printRegisterList(MI, 5, O);
return;
}
O << '\t' << "push";
printPredicateOperand(MI, 2, O);
O << '\t';
printRegisterList(MI, 4, O);
return;
}
// A8.6.122 POP
if ((Opcode == ARM::LDM_UPD || Opcode == ARM::t2LDM_UPD) &&
if ((Opcode == ARM::LDMIA_UPD || Opcode == ARM::t2LDMIA_UPD) &&
MI->getOperand(0).getReg() == ARM::SP) {
const MCOperand &MO1 = MI->getOperand(2);
if (ARM_AM::getAM4SubMode(MO1.getImm()) == ARM_AM::ia) {
O << '\t' << "pop";
printPredicateOperand(MI, 3, O);
O << '\t';
printRegisterList(MI, 5, O);
return;
}
O << '\t' << "pop";
printPredicateOperand(MI, 2, O);
O << '\t';
printRegisterList(MI, 4, O);
return;
}
// A8.6.355 VPUSH
if ((Opcode == ARM::VSTMS_UPD || Opcode == ARM::VSTMD_UPD) &&
if ((Opcode == ARM::VSTMSDB_UPD || Opcode == ARM::VSTMDDB_UPD) &&
MI->getOperand(0).getReg() == ARM::SP) {
const MCOperand &MO1 = MI->getOperand(2);
if (ARM_AM::getAM4SubMode(MO1.getImm()) == ARM_AM::db) {
O << '\t' << "vpush";
printPredicateOperand(MI, 3, O);
O << '\t';
printRegisterList(MI, 5, O);
return;
}
O << '\t' << "vpush";
printPredicateOperand(MI, 2, O);
O << '\t';
printRegisterList(MI, 4, O);
return;
}
// A8.6.354 VPOP
if ((Opcode == ARM::VLDMS_UPD || Opcode == ARM::VLDMD_UPD) &&
if ((Opcode == ARM::VLDMSIA_UPD || Opcode == ARM::VLDMDIA_UPD) &&
MI->getOperand(0).getReg() == ARM::SP) {
const MCOperand &MO1 = MI->getOperand(2);
if (ARM_AM::getAM4SubMode(MO1.getImm()) == ARM_AM::ia) {
O << '\t' << "vpop";
printPredicateOperand(MI, 3, O);
O << '\t';
printRegisterList(MI, 5, O);
return;
}
O << '\t' << "vpop";
printPredicateOperand(MI, 2, O);
O << '\t';
printRegisterList(MI, 4, O);
return;
}
printInstruction(MI, O);
lib/Target/ARM/Thumb2SizeReduction.cpp
+24 -19
View File
@@ -121,11 +121,11 @@ namespace {
{ ARM::t2STRHi12,ARM::tSTRH, 0, 5, 0, 1, 0, 0,0, 1 },
{ ARM::t2STRHs, ARM::tSTRH, 0, 0, 0, 1, 0, 0,0, 1 },
{ ARM::t2LDM, ARM::tLDM, 0, 0, 0, 1, 1, 1,1, 1 },
{ ARM::t2LDM_RET,0, ARM::tPOP_RET, 0, 0, 1, 1, 1,1, 1 },
{ ARM::t2LDM_UPD,ARM::tLDM_UPD,ARM::tPOP, 0, 0, 1, 1, 1,1, 1 },
{ ARM::t2LDMIA, ARM::tLDMIA, 0, 0, 0, 1, 1, 1,1, 1 },
{ ARM::t2LDMIA_RET,0, ARM::tPOP_RET, 0, 0, 1, 1, 1,1, 1 },
{ ARM::t2LDMIA_UPD,ARM::tLDMIA_UPD,ARM::tPOP,0, 0, 1, 1, 1,1, 1 },
// ARM::t2STM (with no basereg writeback) has no Thumb1 equivalent
{ ARM::t2STM_UPD,ARM::tSTM_UPD,ARM::tPUSH, 0, 0, 1, 1, 1,1, 1 },
{ ARM::t2STMIA_UPD,ARM::tSTMIA_UPD,ARM::tPUSH,0, 0, 1, 1, 1,1, 1 },
};
class Thumb2SizeReduce : public MachineFunctionPass {
@@ -233,9 +233,10 @@ Thumb2SizeReduce::VerifyPredAndCC(MachineInstr *MI, const ReduceEntry &Entry,
static bool VerifyLowRegs(MachineInstr *MI) {
unsigned Opc = MI->getOpcode();
bool isPCOk = (Opc == ARM::t2LDM_RET || Opc == ARM::t2LDM ||
Opc == ARM::t2LDM_UPD);
bool isLROk = (Opc == ARM::t2STM_UPD);
bool isPCOk = (Opc == ARM::t2LDMIA_RET || Opc == ARM::t2LDMIA ||
Opc == ARM::t2LDMDB || Opc == ARM::t2LDMIA_UPD ||
Opc == ARM::t2LDMDB_UPD);
bool isLROk = (Opc == ARM::t2STMIA_UPD || Opc == ARM::t2STMDB_UPD);
bool isSPOk = isPCOk || isLROk || (Opc == ARM::t2ADDrSPi);
for (unsigned i = 0, e = MI->getNumOperands(); i != e; ++i) {
const MachineOperand &MO = MI->getOperand(i);
@@ -275,6 +276,7 @@ Thumb2SizeReduce::ReduceLoadStore(MachineBasicBlock &MBB, MachineInstr *MI,
unsigned Opc = Entry.NarrowOpc1;
unsigned OpNum = 3; // First 'rest' of operands.
uint8_t ImmLimit = Entry.Imm1Limit;
switch (Entry.WideOpc) {
default:
llvm_unreachable("Unexpected Thumb2 load / store opcode!");
@@ -310,10 +312,10 @@ Thumb2SizeReduce::ReduceLoadStore(MachineBasicBlock &MBB, MachineInstr *MI,
HasShift = true;
OpNum = 4;
break;
case ARM::t2LDM: {
case ARM::t2LDMIA:
case ARM::t2LDMDB: {
unsigned BaseReg = MI->getOperand(0).getReg();
ARM_AM::AMSubMode Mode = ARM_AM::getAM4SubMode(MI->getOperand(1).getImm());
if (!isARMLowRegister(BaseReg) || Mode != ARM_AM::ia)
if (!isARMLowRegister(BaseReg) || Entry.WideOpc != ARM::t2LDMIA)
return false;
// For the non-writeback version (this one), the base register must be
// one of the registers being loaded.
@@ -331,26 +333,29 @@ Thumb2SizeReduce::ReduceLoadStore(MachineBasicBlock &MBB, MachineInstr *MI,
isLdStMul = true;
break;
}
case ARM::t2LDM_RET: {
case ARM::t2LDMIA_RET: {
unsigned BaseReg = MI->getOperand(1).getReg();
if (BaseReg != ARM::SP)
return false;
Opc = Entry.NarrowOpc2; // tPOP_RET
OpNum = 3;
OpNum = 2;
isLdStMul = true;
break;
}
case ARM::t2LDM_UPD:
case ARM::t2STM_UPD: {
case ARM::t2LDMIA_UPD:
case ARM::t2LDMDB_UPD:
case ARM::t2STMIA_UPD:
case ARM::t2STMDB_UPD: {
OpNum = 0;
unsigned BaseReg = MI->getOperand(1).getReg();
ARM_AM::AMSubMode Mode = ARM_AM::getAM4SubMode(MI->getOperand(2).getImm());
if (BaseReg == ARM::SP &&
((Entry.WideOpc == ARM::t2LDM_UPD && Mode == ARM_AM::ia) ||
(Entry.WideOpc == ARM::t2STM_UPD && Mode == ARM_AM::db))) {
(Entry.WideOpc == ARM::t2LDMIA_UPD ||
Entry.WideOpc == ARM::t2STMDB_UPD)) {
Opc = Entry.NarrowOpc2; // tPOP or tPUSH
OpNum = 3;
} else if (!isARMLowRegister(BaseReg) || Mode != ARM_AM::ia) {
OpNum = 2;
} else if (!isARMLowRegister(BaseReg) ||
(Entry.WideOpc != ARM::t2LDMIA_UPD &&
Entry.WideOpc != ARM::t2STMIA_UPD)) {
return false;
}
isLdStMul = true;
utils/TableGen/ARMDecoderEmitter.cpp
+5 -5
View File
@@ -1629,10 +1629,10 @@ bool ARMDecoderEmitter::ARMDEBackend::populateInstruction(
// operations in order to work around some performance issues.
if (Name.find("_sfp") != std::string::npos) return false;
// LDM_RET is a special case of LDM (Load Multiple) where the registers
// LDMIA_RET is a special case of LDM (Load Multiple) where the registers
// loaded include the PC, causing a branch to a loaded address. Ignore
// the LDM_RET instruction when decoding.
if (Name == "LDM_RET") return false;
// the LDMIA_RET instruction when decoding.
if (Name == "LDMIA_RET") return false;
// Bcc is in a more generic form than B. Ignore B when decoding.
if (Name == "B") return false;
@@ -1726,7 +1726,7 @@ bool ARMDecoderEmitter::ARMDEBackend::populateInstruction(
//
// tBfar conflicts with tBLr9
// tCMNz conflicts with tCMN (with assembly format strings being equal)
// tPOP_RET/t2LDM_RET conflict with tPOP/t2LDM (ditto)
// tPOP_RET/t2LDMIA_RET conflict with tPOP/t2LDM (ditto)
// tMOVCCi conflicts with tMOVi8
// tMOVCCr conflicts with tMOVgpr2gpr
// tBR_JTr conflicts with tBRIND
@@ -1739,7 +1739,7 @@ bool ARMDecoderEmitter::ARMDEBackend::populateInstruction(
/* Name == "tCMNz" || */ Name == "tCMPzi8" || Name == "tCMPzr" ||
Name == "tCMPzhir" || /* Name == "t2CMNzrr" || Name == "t2CMNzrs" ||
Name == "t2CMNzri" || */ Name == "t2CMPzrr" || Name == "t2CMPzrs" ||
Name == "t2CMPzri" || Name == "tPOP_RET" || Name == "t2LDM_RET" ||
Name == "t2CMPzri" || Name == "tPOP_RET" || Name == "t2LDMIA_RET" ||
Name == "tMOVCCi" || Name == "tMOVCCr" || Name == "tBR_JTr" ||
Name == "tSpill" || Name == "tLDRcp" || Name == "tRestore" ||
Name == "t2LEApcrelJT" || Name == "t2MOVCCi16")