class ARMAsmParser : public MCTargetAsmParser {
MCSubtargetInfo &STI;
MCAsmParser &Parser;
+ const MCRegisterInfo *MRI;
// Map of register aliases registers via the .req directive.
StringMap<unsigned> RegisterReqs;
: MCTargetAsmParser(), STI(_STI), Parser(_Parser) {
MCAsmParserExtension::Initialize(_Parser);
+ // Cache the MCRegisterInfo.
+ MRI = &getContext().getRegisterInfo();
+
// Initialize the set of available features.
setAvailableFeatures(ComputeAvailableFeatures(STI.getFeatureBits()));
int64_t Value = CE->getValue();
return ((Value & 3) == 0) && Value >= 0 && Value <= 508;
}
+ bool isImm0_508s4Neg() const {
+ if (!isImm()) return false;
+ const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
+ if (!CE) return false;
+ int64_t Value = -CE->getValue();
+ // explicitly exclude zero. we want that to use the normal 0_508 version.
+ return ((Value & 3) == 0) && Value > 0 && Value <= 508;
+ }
bool isImm0_255() const {
if (!isImm()) return false;
const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
int64_t Value = CE->getValue();
return Value >= 0 && Value < 256;
}
+ bool isImm0_4095() const {
+ if (!isImm()) return false;
+ const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
+ if (!CE) return false;
+ int64_t Value = CE->getValue();
+ return Value >= 0 && Value < 4096;
+ }
+ bool isImm0_4095Neg() const {
+ if (!isImm()) return false;
+ const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
+ if (!CE) return false;
+ int64_t Value = -CE->getValue();
+ return Value > 0 && Value < 4096;
+ }
bool isImm0_1() const {
if (!isImm()) return false;
const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
if (!CE) return false;
int64_t Value = CE->getValue();
- return ARM_AM::getSOImmVal(-Value) != -1;
+ // Only use this when not representable as a plain so_imm.
+ return ARM_AM::getSOImmVal(Value) == -1 &&
+ ARM_AM::getSOImmVal(-Value) != -1;
}
bool isT2SOImm() const {
if (!isImm()) return false;
const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
if (!CE) return false;
int64_t Value = CE->getValue();
- return ARM_AM::getT2SOImmVal(-Value) != -1;
+ // Only use this when not representable as a plain so_imm.
+ return ARM_AM::getT2SOImmVal(Value) == -1 &&
+ ARM_AM::getT2SOImmVal(-Value) != -1;
}
bool isSetEndImm() const {
if (!isImm()) return false;
return VectorList.Count == 1;
}
- bool isVecListTwoD() const {
+ bool isVecListDPair() const {
if (!isSingleSpacedVectorList()) return false;
- return VectorList.Count == 2;
+ return (ARMMCRegisterClasses[ARM::DPairRegClassID]
+ .contains(VectorList.RegNum));
}
bool isVecListThreeD() const {
return VectorList.Count == 4;
}
- bool isVecListTwoQ() const {
- if (!isDoubleSpacedVectorList()) return false;
- return VectorList.Count == 2;
+ bool isVecListDPairSpaced() const {
+ if (isSingleSpacedVectorList()) return false;
+ return (ARMMCRegisterClasses[ARM::DPairSpcRegClassID]
+ .contains(VectorList.RegNum));
}
bool isVecListThreeQ() const {
return VectorList.Count == 1;
}
- bool isVecListTwoDAllLanes() const {
+ bool isVecListDPairAllLanes() const {
if (!isSingleSpacedVectorAllLanes()) return false;
- return VectorList.Count == 2;
+ return (ARMMCRegisterClasses[ARM::DPairRegClassID]
+ .contains(VectorList.RegNum));
}
- bool isVecListTwoQAllLanes() const {
+ bool isVecListDPairSpacedAllLanes() const {
if (!isDoubleSpacedVectorAllLanes()) return false;
return VectorList.Count == 2;
}
Inst.addOperand(MCOperand::CreateImm(CE->getValue() / 4));
}
+ void addImm0_508s4NegOperands(MCInst &Inst, unsigned N) const {
+ assert(N == 1 && "Invalid number of operands!");
+ // The immediate is scaled by four in the encoding and is stored
+ // in the MCInst as such. Lop off the low two bits here.
+ const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
+ Inst.addOperand(MCOperand::CreateImm(-(CE->getValue() / 4)));
+ }
+
void addImm0_508s4Operands(MCInst &Inst, unsigned N) const {
assert(N == 1 && "Invalid number of operands!");
// The immediate is scaled by four in the encoding and is stored
Inst.addOperand(MCOperand::CreateImm(-CE->getValue()));
}
+ void addImm0_4095NegOperands(MCInst &Inst, unsigned N) const {
+ assert(N == 1 && "Invalid number of operands!");
+ // The operand is actually an imm0_4095, but we have its
+ // negation in the assembly source, so twiddle it here.
+ const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
+ Inst.addOperand(MCOperand::CreateImm(-CE->getValue()));
+ }
+
void addARMSOImmNotOperands(MCInst &Inst, unsigned N) const {
assert(N == 1 && "Invalid number of operands!");
// The operand is actually a so_imm, but we have its bitwise
const MCExpr *ImmVal;
if (getParser().ParseExpression(ImmVal))
- return MatchOperand_ParseFail;
+ return true;
const MCConstantExpr *MCE = dyn_cast<MCConstantExpr>(ImmVal);
- if (!MCE) {
- TokError("immediate value expected for vector index");
- return MatchOperand_ParseFail;
- }
+ if (!MCE)
+ return TokError("immediate value expected for vector index");
SMLoc E = Parser.getTok().getLoc();
- if (Parser.getTok().isNot(AsmToken::RBrac)) {
- Error(E, "']' expected");
- return MatchOperand_ParseFail;
- }
+ if (Parser.getTok().isNot(AsmToken::RBrac))
+ return Error(E, "']' expected");
Parser.Lex(); // Eat right bracket token.
if (!ARMMCRegisterClasses[ARM::GPRRegClassID].contains(Reg))
return Reg + 1;
switch(Reg) {
- default: assert(0 && "Invalid GPR number!");
+ default: llvm_unreachable("Invalid GPR number!");
case ARM::R0: return ARM::R1; case ARM::R1: return ARM::R2;
case ARM::R2: return ARM::R3; case ARM::R3: return ARM::R4;
case ARM::R4: return ARM::R5; case ARM::R5: return ARM::R6;
if (!RC->contains(Reg))
return Error(RegLoc, "invalid register in register list");
// List must be monotonically increasing.
- if (getARMRegisterNumbering(Reg) < getARMRegisterNumbering(OldReg))
- return Error(RegLoc, "register list not in ascending order");
+ if (getARMRegisterNumbering(Reg) < getARMRegisterNumbering(OldReg)) {
+ if (ARMMCRegisterClasses[ARM::GPRRegClassID].contains(Reg))
+ Warning(RegLoc, "register list not in ascending order");
+ else
+ return Error(RegLoc, "register list not in ascending order");
+ }
if (getARMRegisterNumbering(Reg) == getARMRegisterNumbering(OldReg)) {
Warning(RegLoc, "duplicated register (" + RegTok.getString() +
") in register list");
Parser.Lex(); // Eat the ']'.
return MatchOperand_Success;
}
+
+ // There's an optional '#' token here. Normally there wouldn't be, but
+ // inline assemble puts one in, and it's friendly to accept that.
+ if (Parser.getTok().is(AsmToken::Hash))
+ Parser.Lex(); // Eat the '#'
+
const MCExpr *LaneIndex;
SMLoc Loc = Parser.getTok().getLoc();
if (getParser().ParseExpression(LaneIndex)) {
switch (LaneKind) {
case NoLanes:
E = Parser.getTok().getLoc();
+ Reg = MRI->getMatchingSuperReg(Reg, ARM::dsub_0,
+ &ARMMCRegisterClasses[ARM::DPairRegClassID]);
Operands.push_back(ARMOperand::CreateVectorList(Reg, 2, false, S, E));
break;
case AllLanes:
E = Parser.getTok().getLoc();
+ Reg = MRI->getMatchingSuperReg(Reg, ARM::dsub_0,
+ &ARMMCRegisterClasses[ARM::DPairRegClassID]);
Operands.push_back(ARMOperand::CreateVectorListAllLanes(Reg, 2, false,
S, E));
break;
switch (LaneKind) {
case NoLanes:
+ // Two-register operands have been converted to the
+ // composite register classes.
+ if (Count == 2) {
+ const MCRegisterClass *RC = (Spacing == 1) ?
+ &ARMMCRegisterClasses[ARM::DPairRegClassID] :
+ &ARMMCRegisterClasses[ARM::DPairSpcRegClassID];
+ FirstReg = MRI->getMatchingSuperReg(FirstReg, ARM::dsub_0, RC);
+ }
+
Operands.push_back(ARMOperand::CreateVectorList(FirstReg, Count,
(Spacing == 2), S, E));
break;
case AllLanes:
+ // Two-register operands have been converted to the
+ // composite register classes.
+ if (Count == 2) {
+ const MCRegisterClass *RC = (Spacing == 1) ?
+ &ARMMCRegisterClasses[ARM::DPairRegClassID] :
+ &ARMMCRegisterClasses[ARM::DPairSpcRegClassID];
+ FirstReg = MRI->getMatchingSuperReg(FirstReg, ARM::dsub_0, RC);
+ }
Operands.push_back(ARMOperand::CreateVectorListAllLanes(FirstReg, Count,
(Spacing == 2),
S, E));
if (isMClass()) {
// See ARMv6-M 10.1.1
- unsigned FlagsVal = StringSwitch<unsigned>(Mask)
+ std::string Name = Mask.lower();
+ unsigned FlagsVal = StringSwitch<unsigned>(Name)
.Case("apsr", 0)
.Case("iapsr", 1)
.Case("eapsr", 2)
FlagsVal = 8; // No flag
}
} else if (SpecReg == "cpsr" || SpecReg == "spsr") {
- if (Flags == "all") // cpsr_all is an alias for cpsr_fc
+ // cpsr_all is an alias for cpsr_fc, as is plain cpsr.
+ if (Flags == "all" || Flags == "")
Flags = "fc";
for (int i = 0, e = Flags.size(); i != e; ++i) {
unsigned Flag = StringSwitch<unsigned>(Flags.substr(i, 1))
else if (Res == -1) // irrecoverable error
return true;
// If this is VMRS, check for the apsr_nzcv operand.
- if (Mnemonic == "vmrs" && Parser.getTok().getString() == "apsr_nzcv") {
+ if (Mnemonic == "vmrs" &&
+ Parser.getTok().getString().equals_lower("apsr_nzcv")) {
S = Parser.getTok().getLoc();
Parser.Lex();
- Operands.push_back(ARMOperand::CreateToken("apsr_nzcv", S));
+ Operands.push_back(ARMOperand::CreateToken("APSR_nzcv", S));
return false;
}
Mnemonic == "vrsqrts" || Mnemonic == "srs" || Mnemonic == "flds" ||
Mnemonic == "fmrs" || Mnemonic == "fsqrts" || Mnemonic == "fsubs" ||
Mnemonic == "fsts" || Mnemonic == "fcpys" || Mnemonic == "fdivs" ||
- Mnemonic == "fmuls" || Mnemonic == "fcmps" ||
+ Mnemonic == "fmuls" || Mnemonic == "fcmps" || Mnemonic == "fcmpzs" ||
(Mnemonic == "movs" && isThumb()))) {
Mnemonic = Mnemonic.slice(0, Mnemonic.size() - 1);
CarrySetting = true;
static unsigned getRealVSTOpcode(unsigned Opc, unsigned &Spacing) {
switch(Opc) {
- default: assert(0 && "unexpected opcode!");
+ default: llvm_unreachable("unexpected opcode!");
// VST1LN
case ARM::VST1LNdWB_fixed_Asm_8: Spacing = 1; return ARM::VST1LNd8_UPD;
case ARM::VST1LNdWB_fixed_Asm_16: Spacing = 1; return ARM::VST1LNd16_UPD;
static unsigned getRealVLDOpcode(unsigned Opc, unsigned &Spacing) {
switch(Opc) {
- default: assert(0 && "unexpected opcode!");
+ default: llvm_unreachable("unexpected opcode!");
// VLD1LN
case ARM::VLD1LNdWB_fixed_Asm_8: Spacing = 1; return ARM::VLD1LNd8_UPD;
case ARM::VLD1LNdWB_fixed_Asm_16: Spacing = 1; return ARM::VLD1LNd16_UPD;
// explicitly specified. From the ARM ARM: "Encoding T1 is preferred
// to encoding T2 if <Rd> is specified and encoding T2 is preferred
// to encoding T1 if <Rd> is omitted."
- if (Inst.getOperand(3).getImm() < 8 && Operands.size() == 6) {
+ if ((unsigned)Inst.getOperand(3).getImm() < 8 && Operands.size() == 6) {
Inst.setOpcode(ARM::tADDi3);
return true;
}
// explicitly specified. From the ARM ARM: "Encoding T1 is preferred
// to encoding T2 if <Rd> is specified and encoding T2 is preferred
// to encoding T1 if <Rd> is omitted."
- if (Inst.getOperand(3).getImm() < 8 && Operands.size() == 6) {
+ if ((unsigned)Inst.getOperand(3).getImm() < 8 && Operands.size() == 6) {
Inst.setOpcode(ARM::tSUBi3);
return true;
}
break;
+ case ARM::t2ADDri:
+ case ARM::t2SUBri: {
+ // If the destination and first source operand are the same, and
+ // the flags are compatible with the current IT status, use encoding T2
+ // instead of T3. For compatibility with the system 'as'. Make sure the
+ // wide encoding wasn't explicit.
+ if (Inst.getOperand(0).getReg() != Inst.getOperand(1).getReg() ||
+ !isARMLowRegister(Inst.getOperand(0).getReg()) ||
+ (unsigned)Inst.getOperand(2).getImm() > 255 ||
+ ((!inITBlock() && Inst.getOperand(5).getReg() != ARM::CPSR) ||
+ (inITBlock() && Inst.getOperand(5).getReg() != 0)) ||
+ (static_cast<ARMOperand*>(Operands[3])->isToken() &&
+ static_cast<ARMOperand*>(Operands[3])->getToken() == ".w"))
+ break;
+ MCInst TmpInst;
+ TmpInst.setOpcode(Inst.getOpcode() == ARM::t2ADDri ?
+ ARM::tADDi8 : ARM::tSUBi8);
+ TmpInst.addOperand(Inst.getOperand(0));
+ TmpInst.addOperand(Inst.getOperand(5));
+ TmpInst.addOperand(Inst.getOperand(0));
+ TmpInst.addOperand(Inst.getOperand(2));
+ TmpInst.addOperand(Inst.getOperand(3));
+ TmpInst.addOperand(Inst.getOperand(4));
+ Inst = TmpInst;
+ return true;
+ }
case ARM::t2ADDrr: {
// If the destination and first source operand are the same, and
// there's no setting of the flags, use encoding T2 instead of T3.
// If we can use the 16-bit encoding and the user didn't explicitly
// request the 32-bit variant, transform it here.
if (isARMLowRegister(Inst.getOperand(0).getReg()) &&
- Inst.getOperand(1).getImm() <= 255 &&
+ (unsigned)Inst.getOperand(1).getImm() <= 255 &&
((!inITBlock() && Inst.getOperand(2).getImm() == ARMCC::AL &&
Inst.getOperand(4).getReg() == ARM::CPSR) ||
(inITBlock() && Inst.getOperand(4).getReg() == 0)) &&
ARM_AM::ShiftOpc SOpc = ARM_AM::getSORegShOp(Inst.getOperand(3).getImm());
if (SOpc == ARM_AM::rrx) return false;
switch (Inst.getOpcode()) {
- default: assert(0 && "unexpected opcode!");
+ default: llvm_unreachable("unexpected opcode!");
case ARM::ANDrsi: newOpc = ARM::ANDrr; break;
case ARM::ORRrsi: newOpc = ARM::ORRrr; break;
case ARM::EORrsi: newOpc = ARM::EORrr; break;
if (Inst.getOpcode() == ARM::ITasm)
return false;
+ Inst.setLoc(IDLoc);
Out.EmitInstruction(Inst);
return false;
case Match_MissingFeature:
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