#include "CodeGenTarget.h"
#include "Record.h"
#include "llvm/ADT/StringExtras.h"
+#include "llvm/ADT/StringMap.h"
#include "llvm/ADT/STLExtras.h"
#include <set>
using namespace llvm;
-static void ParseConstraint(const std::string &CStr, CodeGenInstruction *I) {
- // EARLY_CLOBBER: @early $reg
- std::string::size_type wpos = CStr.find_first_of(" \t");
- std::string::size_type start = CStr.find_first_not_of(" \t");
- std::string Tok = CStr.substr(start, wpos - start);
- if (Tok == "@earlyclobber") {
- std::string Name = CStr.substr(wpos+1);
- wpos = Name.find_first_not_of(" \t");
- if (wpos == std::string::npos)
- throw "Illegal format for @earlyclobber constraint: '" + CStr + "'";
- Name = Name.substr(wpos);
- std::pair<unsigned,unsigned> Op =
- I->ParseOperandName(Name, false);
-
- // Build the string for the operand
- if (!I->OperandList[Op.first].Constraints[Op.second].isNone())
- throw "Operand '" + Name + "' cannot have multiple constraints!";
- I->OperandList[Op.first].Constraints[Op.second] =
- CodeGenInstruction::ConstraintInfo::getEarlyClobber();
- return;
- }
-
- // Only other constraint is "TIED_TO" for now.
- std::string::size_type pos = CStr.find_first_of('=');
- assert(pos != std::string::npos && "Unrecognized constraint");
- start = CStr.find_first_not_of(" \t");
- std::string Name = CStr.substr(start, pos - start);
-
- // TIED_TO: $src1 = $dst
- wpos = Name.find_first_of(" \t");
- if (wpos == std::string::npos)
- throw "Illegal format for tied-to constraint: '" + CStr + "'";
- std::string DestOpName = Name.substr(0, wpos);
- std::pair<unsigned,unsigned> DestOp = I->ParseOperandName(DestOpName, false);
-
- Name = CStr.substr(pos+1);
- wpos = Name.find_first_not_of(" \t");
- if (wpos == std::string::npos)
- throw "Illegal format for tied-to constraint: '" + CStr + "'";
-
- std::pair<unsigned,unsigned> SrcOp =
- I->ParseOperandName(Name.substr(wpos), false);
- if (SrcOp > DestOp)
- throw "Illegal tied-to operand constraint '" + CStr + "'";
-
-
- unsigned FlatOpNo = I->getFlattenedOperandNumber(SrcOp);
-
- if (!I->OperandList[DestOp.first].Constraints[DestOp.second].isNone())
- throw "Operand '" + DestOpName + "' cannot have multiple constraints!";
- I->OperandList[DestOp.first].Constraints[DestOp.second] =
- CodeGenInstruction::ConstraintInfo::getTied(FlatOpNo);
-}
-
-static void ParseConstraints(const std::string &CStr, CodeGenInstruction *I) {
- // Make sure the constraints list for each operand is large enough to hold
- // constraint info, even if none is present.
- for (unsigned i = 0, e = I->OperandList.size(); i != e; ++i)
- I->OperandList[i].Constraints.resize(I->OperandList[i].MINumOperands);
-
- if (CStr.empty()) return;
-
- const std::string delims(",");
- std::string::size_type bidx, eidx;
-
- bidx = CStr.find_first_not_of(delims);
- while (bidx != std::string::npos) {
- eidx = CStr.find_first_of(delims, bidx);
- if (eidx == std::string::npos)
- eidx = CStr.length();
-
- ParseConstraint(CStr.substr(bidx, eidx - bidx), I);
- bidx = CStr.find_first_not_of(delims, eidx);
- }
-}
-
-CodeGenInstruction::CodeGenInstruction(Record *R, const std::string &AsmStr)
- : TheDef(R), AsmString(AsmStr) {
- Namespace = R->getValueAsString("Namespace");
+//===----------------------------------------------------------------------===//
+// CGIOperandList Implementation
+//===----------------------------------------------------------------------===//
- isReturn = R->getValueAsBit("isReturn");
- isBranch = R->getValueAsBit("isBranch");
- isIndirectBranch = R->getValueAsBit("isIndirectBranch");
- isBarrier = R->getValueAsBit("isBarrier");
- isCall = R->getValueAsBit("isCall");
- canFoldAsLoad = R->getValueAsBit("canFoldAsLoad");
- mayLoad = R->getValueAsBit("mayLoad");
- mayStore = R->getValueAsBit("mayStore");
- bool isTwoAddress = R->getValueAsBit("isTwoAddress");
- isPredicable = R->getValueAsBit("isPredicable");
- isConvertibleToThreeAddress = R->getValueAsBit("isConvertibleToThreeAddress");
- isCommutable = R->getValueAsBit("isCommutable");
- isTerminator = R->getValueAsBit("isTerminator");
- isReMaterializable = R->getValueAsBit("isReMaterializable");
- hasDelaySlot = R->getValueAsBit("hasDelaySlot");
- usesCustomInserter = R->getValueAsBit("usesCustomInserter");
- hasCtrlDep = R->getValueAsBit("hasCtrlDep");
- isNotDuplicable = R->getValueAsBit("isNotDuplicable");
- hasSideEffects = R->getValueAsBit("hasSideEffects");
- neverHasSideEffects = R->getValueAsBit("neverHasSideEffects");
- isAsCheapAsAMove = R->getValueAsBit("isAsCheapAsAMove");
- hasExtraSrcRegAllocReq = R->getValueAsBit("hasExtraSrcRegAllocReq");
- hasExtraDefRegAllocReq = R->getValueAsBit("hasExtraDefRegAllocReq");
+CGIOperandList::CGIOperandList(Record *R) : TheDef(R) {
+ isPredicable = false;
hasOptionalDef = false;
isVariadic = false;
- ImplicitDefs = R->getValueAsListOfDefs("Defs");
- ImplicitUses = R->getValueAsListOfDefs("Uses");
-
- if (neverHasSideEffects + hasSideEffects > 1)
- throw R->getName() + ": multiple conflicting side-effect flags set!";
-
+
DagInit *OutDI = R->getValueAsDag("OutOperandList");
-
+
if (DefInit *Init = dynamic_cast<DefInit*>(OutDI->getOperator())) {
if (Init->getDef()->getName() != "outs")
throw R->getName() + ": invalid def name for output list: use 'outs'";
} else
throw R->getName() + ": invalid output list: use 'outs'";
-
+
NumDefs = OutDI->getNumArgs();
-
+
DagInit *InDI = R->getValueAsDag("InOperandList");
if (DefInit *Init = dynamic_cast<DefInit*>(InDI->getOperator())) {
if (Init->getDef()->getName() != "ins")
throw R->getName() + ": invalid def name for input list: use 'ins'";
} else
throw R->getName() + ": invalid input list: use 'ins'";
-
+
unsigned MIOperandNo = 0;
std::set<std::string> OperandNames;
for (unsigned i = 0, e = InDI->getNumArgs()+OutDI->getNumArgs(); i != e; ++i){
DefInit *Arg = dynamic_cast<DefInit*>(ArgInit);
if (!Arg)
throw "Illegal operand for the '" + R->getName() + "' instruction!";
-
+
Record *Rec = Arg->getDef();
std::string PrintMethod = "printOperand";
+ std::string EncoderMethod;
unsigned NumOps = 1;
DagInit *MIOpInfo = 0;
if (Rec->isSubClassOf("Operand")) {
PrintMethod = Rec->getValueAsString("PrintMethod");
+ // If there is an explicit encoder method, use it.
+ EncoderMethod = Rec->getValueAsString("EncoderMethod");
MIOpInfo = Rec->getValueAsDag("MIOperandInfo");
-
+
// Verify that MIOpInfo has an 'ops' root value.
if (!dynamic_cast<DefInit*>(MIOpInfo->getOperator()) ||
dynamic_cast<DefInit*>(MIOpInfo->getOperator())
- ->getDef()->getName() != "ops")
+ ->getDef()->getName() != "ops")
throw "Bad value for MIOperandInfo in operand '" + Rec->getName() +
- "'\n";
-
+ "'\n";
+
// If we have MIOpInfo, then we have #operands equal to number of entries
// in MIOperandInfo.
if (unsigned NumArgs = MIOpInfo->getNumArgs())
NumOps = NumArgs;
-
+
if (Rec->isSubClassOf("PredicateOperand"))
isPredicable = true;
else if (Rec->isSubClassOf("OptionalDefOperand"))
} else if (!Rec->isSubClassOf("RegisterClass") &&
Rec->getName() != "ptr_rc" && Rec->getName() != "unknown")
throw "Unknown operand class '" + Rec->getName() +
- "' in '" + R->getName() + "' instruction!";
-
+ "' in '" + R->getName() + "' instruction!";
+
// Check that the operand has a name and that it's unique.
if (ArgName.empty())
throw "In instruction '" + R->getName() + "', operand #" + utostr(i) +
- " has no name!";
+ " has no name!";
if (!OperandNames.insert(ArgName).second)
throw "In instruction '" + R->getName() + "', operand #" + utostr(i) +
- " has the same name as a previous operand!";
-
- OperandList.push_back(OperandInfo(Rec, ArgName, PrintMethod,
+ " has the same name as a previous operand!";
+
+ OperandList.push_back(OperandInfo(Rec, ArgName, PrintMethod, EncoderMethod,
MIOperandNo, NumOps, MIOpInfo));
MIOperandNo += NumOps;
}
-
- // Parse Constraints.
- ParseConstraints(R->getValueAsString("Constraints"), this);
-
- // For backward compatibility: isTwoAddress means operand 1 is tied to
- // operand 0.
- if (isTwoAddress) {
- if (!OperandList[1].Constraints[0].isNone())
- throw R->getName() + ": cannot use isTwoAddress property: instruction "
- "already has constraint set!";
- OperandList[1].Constraints[0] =
- CodeGenInstruction::ConstraintInfo::getTied(0);
- }
-
- // Parse the DisableEncoding field.
- std::string DisableEncoding = R->getValueAsString("DisableEncoding");
- while (1) {
- std::string OpName;
- tie(OpName, DisableEncoding) = getToken(DisableEncoding, " ,\t");
- if (OpName.empty()) break;
-
- // Figure out which operand this is.
- std::pair<unsigned,unsigned> Op = ParseOperandName(OpName, false);
-
- // Mark the operand as not-to-be encoded.
- if (Op.second >= OperandList[Op.first].DoNotEncode.size())
- OperandList[Op.first].DoNotEncode.resize(Op.second+1);
- OperandList[Op.first].DoNotEncode[Op.second] = true;
- }
+
+
+ // Make sure the constraints list for each operand is large enough to hold
+ // constraint info, even if none is present.
+ for (unsigned i = 0, e = OperandList.size(); i != e; ++i)
+ OperandList[i].Constraints.resize(OperandList[i].MINumOperands);
}
+
/// getOperandNamed - Return the index of the operand with the specified
/// non-empty name. If the instruction does not have an operand with the
/// specified name, throw an exception.
///
-unsigned CodeGenInstruction::getOperandNamed(const std::string &Name) const {
+unsigned CGIOperandList::getOperandNamed(StringRef Name) const {
+ unsigned OpIdx;
+ if (hasOperandNamed(Name, OpIdx)) return OpIdx;
+ throw "'" + TheDef->getName() + "' does not have an operand named '$" +
+ Name.str() + "'!";
+}
+
+/// hasOperandNamed - Query whether the instruction has an operand of the
+/// given name. If so, return true and set OpIdx to the index of the
+/// operand. Otherwise, return false.
+bool CGIOperandList::hasOperandNamed(StringRef Name, unsigned &OpIdx) const {
assert(!Name.empty() && "Cannot search for operand with no name!");
for (unsigned i = 0, e = OperandList.size(); i != e; ++i)
- if (OperandList[i].Name == Name) return i;
- throw "Instruction '" + TheDef->getName() +
- "' does not have an operand named '$" + Name + "'!";
+ if (OperandList[i].Name == Name) {
+ OpIdx = i;
+ return true;
+ }
+ return false;
}
std::pair<unsigned,unsigned>
-CodeGenInstruction::ParseOperandName(const std::string &Op,
- bool AllowWholeOp) {
+CGIOperandList::ParseOperandName(const std::string &Op, bool AllowWholeOp) {
if (Op.empty() || Op[0] != '$')
throw TheDef->getName() + ": Illegal operand name: '" + Op + "'";
-
+
std::string OpName = Op.substr(1);
std::string SubOpName;
-
+
// Check to see if this is $foo.bar.
std::string::size_type DotIdx = OpName.find_first_of(".");
if (DotIdx != std::string::npos) {
throw TheDef->getName() + ": illegal empty suboperand name in '" +Op +"'";
OpName = OpName.substr(0, DotIdx);
}
-
+
unsigned OpIdx = getOperandNamed(OpName);
-
+
if (SubOpName.empty()) { // If no suboperand name was specified:
// If one was needed, throw.
if (OperandList[OpIdx].MINumOperands > 1 && !AllowWholeOp &&
SubOpName.empty())
throw TheDef->getName() + ": Illegal to refer to"
- " whole operand part of complex operand '" + Op + "'";
-
+ " whole operand part of complex operand '" + Op + "'";
+
// Otherwise, return the operand.
return std::make_pair(OpIdx, 0U);
}
-
+
// Find the suboperand number involved.
DagInit *MIOpInfo = OperandList[OpIdx].MIOperandInfo;
if (MIOpInfo == 0)
throw TheDef->getName() + ": unknown suboperand name in '" + Op + "'";
-
+
// Find the operand with the right name.
for (unsigned i = 0, e = MIOpInfo->getNumArgs(); i != e; ++i)
if (MIOpInfo->getArgName(i) == SubOpName)
return std::make_pair(OpIdx, i);
-
+
// Otherwise, didn't find it!
throw TheDef->getName() + ": unknown suboperand name in '" + Op + "'";
}
+static void ParseConstraint(const std::string &CStr, CGIOperandList &Ops) {
+ // EARLY_CLOBBER: @early $reg
+ std::string::size_type wpos = CStr.find_first_of(" \t");
+ std::string::size_type start = CStr.find_first_not_of(" \t");
+ std::string Tok = CStr.substr(start, wpos - start);
+ if (Tok == "@earlyclobber") {
+ std::string Name = CStr.substr(wpos+1);
+ wpos = Name.find_first_not_of(" \t");
+ if (wpos == std::string::npos)
+ throw "Illegal format for @earlyclobber constraint: '" + CStr + "'";
+ Name = Name.substr(wpos);
+ std::pair<unsigned,unsigned> Op = Ops.ParseOperandName(Name, false);
+
+ // Build the string for the operand
+ if (!Ops[Op.first].Constraints[Op.second].isNone())
+ throw "Operand '" + Name + "' cannot have multiple constraints!";
+ Ops[Op.first].Constraints[Op.second] =
+ CGIOperandList::ConstraintInfo::getEarlyClobber();
+ return;
+ }
+
+ // Only other constraint is "TIED_TO" for now.
+ std::string::size_type pos = CStr.find_first_of('=');
+ assert(pos != std::string::npos && "Unrecognized constraint");
+ start = CStr.find_first_not_of(" \t");
+ std::string Name = CStr.substr(start, pos - start);
+
+ // TIED_TO: $src1 = $dst
+ wpos = Name.find_first_of(" \t");
+ if (wpos == std::string::npos)
+ throw "Illegal format for tied-to constraint: '" + CStr + "'";
+ std::string DestOpName = Name.substr(0, wpos);
+ std::pair<unsigned,unsigned> DestOp = Ops.ParseOperandName(DestOpName, false);
+
+ Name = CStr.substr(pos+1);
+ wpos = Name.find_first_not_of(" \t");
+ if (wpos == std::string::npos)
+ throw "Illegal format for tied-to constraint: '" + CStr + "'";
+
+ std::pair<unsigned,unsigned> SrcOp =
+ Ops.ParseOperandName(Name.substr(wpos), false);
+ if (SrcOp > DestOp)
+ throw "Illegal tied-to operand constraint '" + CStr + "'";
+
+
+ unsigned FlatOpNo = Ops.getFlattenedOperandNumber(SrcOp);
+
+ if (!Ops[DestOp.first].Constraints[DestOp.second].isNone())
+ throw "Operand '" + DestOpName + "' cannot have multiple constraints!";
+ Ops[DestOp.first].Constraints[DestOp.second] =
+ CGIOperandList::ConstraintInfo::getTied(FlatOpNo);
+}
+
+static void ParseConstraints(const std::string &CStr, CGIOperandList &Ops) {
+ if (CStr.empty()) return;
+
+ const std::string delims(",");
+ std::string::size_type bidx, eidx;
+
+ bidx = CStr.find_first_not_of(delims);
+ while (bidx != std::string::npos) {
+ eidx = CStr.find_first_of(delims, bidx);
+ if (eidx == std::string::npos)
+ eidx = CStr.length();
+
+ ParseConstraint(CStr.substr(bidx, eidx - bidx), Ops);
+ bidx = CStr.find_first_not_of(delims, eidx);
+ }
+}
+
+void CGIOperandList::ProcessDisableEncoding(std::string DisableEncoding) {
+ while (1) {
+ std::string OpName;
+ tie(OpName, DisableEncoding) = getToken(DisableEncoding, " ,\t");
+ if (OpName.empty()) break;
+
+ // Figure out which operand this is.
+ std::pair<unsigned,unsigned> Op = ParseOperandName(OpName, false);
+
+ // Mark the operand as not-to-be encoded.
+ if (Op.second >= OperandList[Op.first].DoNotEncode.size())
+ OperandList[Op.first].DoNotEncode.resize(Op.second+1);
+ OperandList[Op.first].DoNotEncode[Op.second] = true;
+ }
+
+}
+
+//===----------------------------------------------------------------------===//
+// CodeGenInstruction Implementation
+//===----------------------------------------------------------------------===//
+
+CodeGenInstruction::CodeGenInstruction(Record *R) : TheDef(R), Operands(R) {
+ Namespace = R->getValueAsString("Namespace");
+ AsmString = R->getValueAsString("AsmString");
+
+ isReturn = R->getValueAsBit("isReturn");
+ isBranch = R->getValueAsBit("isBranch");
+ isIndirectBranch = R->getValueAsBit("isIndirectBranch");
+ isCompare = R->getValueAsBit("isCompare");
+ isMoveImm = R->getValueAsBit("isMoveImm");
+ isBarrier = R->getValueAsBit("isBarrier");
+ isCall = R->getValueAsBit("isCall");
+ canFoldAsLoad = R->getValueAsBit("canFoldAsLoad");
+ mayLoad = R->getValueAsBit("mayLoad");
+ mayStore = R->getValueAsBit("mayStore");
+ isPredicable = Operands.isPredicable || R->getValueAsBit("isPredicable");
+ isConvertibleToThreeAddress = R->getValueAsBit("isConvertibleToThreeAddress");
+ isCommutable = R->getValueAsBit("isCommutable");
+ isTerminator = R->getValueAsBit("isTerminator");
+ isReMaterializable = R->getValueAsBit("isReMaterializable");
+ hasDelaySlot = R->getValueAsBit("hasDelaySlot");
+ usesCustomInserter = R->getValueAsBit("usesCustomInserter");
+ hasCtrlDep = R->getValueAsBit("hasCtrlDep");
+ isNotDuplicable = R->getValueAsBit("isNotDuplicable");
+ hasSideEffects = R->getValueAsBit("hasSideEffects");
+ neverHasSideEffects = R->getValueAsBit("neverHasSideEffects");
+ isAsCheapAsAMove = R->getValueAsBit("isAsCheapAsAMove");
+ hasExtraSrcRegAllocReq = R->getValueAsBit("hasExtraSrcRegAllocReq");
+ hasExtraDefRegAllocReq = R->getValueAsBit("hasExtraDefRegAllocReq");
+ ImplicitDefs = R->getValueAsListOfDefs("Defs");
+ ImplicitUses = R->getValueAsListOfDefs("Uses");
+
+ if (neverHasSideEffects + hasSideEffects > 1)
+ throw R->getName() + ": multiple conflicting side-effect flags set!";
+
+ // Parse Constraints.
+ ParseConstraints(R->getValueAsString("Constraints"), Operands);
+
+ // Parse the DisableEncoding field.
+ Operands.ProcessDisableEncoding(R->getValueAsString("DisableEncoding"));
+}
/// HasOneImplicitDefWithKnownVT - If the instruction has at least one
/// implicit def and it has a known VT, return the VT, otherwise return
return MVT::Other;
}
+
+/// FlattenAsmStringVariants - Flatten the specified AsmString to only
+/// include text from the specified variant, returning the new string.
+std::string CodeGenInstruction::
+FlattenAsmStringVariants(StringRef Cur, unsigned Variant) {
+ std::string Res = "";
+
+ for (;;) {
+ // Find the start of the next variant string.
+ size_t VariantsStart = 0;
+ for (size_t e = Cur.size(); VariantsStart != e; ++VariantsStart)
+ if (Cur[VariantsStart] == '{' &&
+ (VariantsStart == 0 || (Cur[VariantsStart-1] != '$' &&
+ Cur[VariantsStart-1] != '\\')))
+ break;
+
+ // Add the prefix to the result.
+ Res += Cur.slice(0, VariantsStart);
+ if (VariantsStart == Cur.size())
+ break;
+
+ ++VariantsStart; // Skip the '{'.
+
+ // Scan to the end of the variants string.
+ size_t VariantsEnd = VariantsStart;
+ unsigned NestedBraces = 1;
+ for (size_t e = Cur.size(); VariantsEnd != e; ++VariantsEnd) {
+ if (Cur[VariantsEnd] == '}' && Cur[VariantsEnd-1] != '\\') {
+ if (--NestedBraces == 0)
+ break;
+ } else if (Cur[VariantsEnd] == '{')
+ ++NestedBraces;
+ }
+
+ // Select the Nth variant (or empty).
+ StringRef Selection = Cur.slice(VariantsStart, VariantsEnd);
+ for (unsigned i = 0; i != Variant; ++i)
+ Selection = Selection.split('|').second;
+ Res += Selection.split('|').first;
+
+ assert(VariantsEnd != Cur.size() &&
+ "Unterminated variants in assembly string!");
+ Cur = Cur.substr(VariantsEnd + 1);
+ }
+
+ return Res;
+}
+
+
+//===----------------------------------------------------------------------===//
+/// CodeGenInstAlias Implementation
+//===----------------------------------------------------------------------===//
+
+CodeGenInstAlias::CodeGenInstAlias(Record *R, CodeGenTarget &T) : TheDef(R) {
+ AsmString = R->getValueAsString("AsmString");
+ Result = R->getValueAsDag("ResultInst");
+
+ // Verify that the root of the result is an instruction.
+ DefInit *DI = dynamic_cast<DefInit*>(Result->getOperator());
+ if (DI == 0 || !DI->getDef()->isSubClassOf("Instruction"))
+ throw TGError(R->getLoc(), "result of inst alias should be an instruction");
+
+ ResultInst = &T.getInstruction(DI->getDef());
+
+ // NameClass - If argument names are repeated, we need to verify they have
+ // the same class.
+ StringMap<Record*> NameClass;
+
+ // Decode and validate the arguments of the result.
+ unsigned AliasOpNo = 0;
+ for (unsigned i = 0, e = ResultInst->Operands.size(); i != e; ++i) {
+ // Tied registers don't have an entry in the result dag.
+ if (ResultInst->Operands[i].getTiedRegister() != -1)
+ continue;
+
+ if (AliasOpNo >= Result->getNumArgs())
+ throw TGError(R->getLoc(), "result has " + utostr(Result->getNumArgs()) +
+ " arguments, but " + ResultInst->TheDef->getName() +
+ " instruction expects " +
+ utostr(ResultInst->Operands.size()) + " operands!");
+
+
+ Init *Arg = Result->getArg(AliasOpNo);
+ Record *ResultOpRec = ResultInst->Operands[i].Rec;
+
+ // Handle explicit registers.
+ if (DefInit *ADI = dynamic_cast<DefInit*>(Arg)) {
+ if (ADI->getDef()->isSubClassOf("Register")) {
+ if (!Result->getArgName(AliasOpNo).empty())
+ throw TGError(R->getLoc(), "result fixed register argument must "
+ "not have a name!");
+
+ if (!ResultOpRec->isSubClassOf("RegisterClass"))
+ throw TGError(R->getLoc(), "result fixed register argument is not "
+ "passed to a RegisterClass operand!");
+
+ if (!T.getRegisterClass(ResultOpRec).containsRegister(ADI->getDef()))
+ throw TGError(R->getLoc(), "fixed register " +ADI->getDef()->getName()
+ + " is not a member of the " + ResultOpRec->getName() +
+ " register class!");
+
+ // Now that it is validated, add it.
+ ResultOperands.push_back(ResultOperand(ADI->getDef()));
+ ++AliasOpNo;
+ continue;
+ }
+ }
+
+ // If the operand is a record, it must have a name, and the record type must
+ // match up with the instruction's argument type.
+ if (DefInit *ADI = dynamic_cast<DefInit*>(Arg)) {
+ if (Result->getArgName(AliasOpNo).empty())
+ throw TGError(R->getLoc(), "result argument #" + utostr(AliasOpNo) +
+ " must have a name!");
+
+ if (ADI->getDef() != ResultOpRec)
+ throw TGError(R->getLoc(), "result argument #" + utostr(AliasOpNo) +
+ " declared with class " + ADI->getDef()->getName() +
+ ", instruction operand is class " +
+ ResultOpRec->getName());
+
+ // Verify we don't have something like: (someinst GR16:$foo, GR32:$foo)
+ // $foo can exist multiple times in the result list, but it must have the
+ // same type.
+ Record *&Entry = NameClass[Result->getArgName(AliasOpNo)];
+ if (Entry && Entry != ADI->getDef())
+ throw TGError(R->getLoc(), "result value $" +
+ Result->getArgName(AliasOpNo) +
+ " is both " + Entry->getName() + " and " +
+ ADI->getDef()->getName() + "!");
+
+ // Now that it is validated, add it.
+ ResultOperands.push_back(ResultOperand(Result->getArgName(AliasOpNo),
+ ADI->getDef()));
+ ++AliasOpNo;
+ continue;
+ }
+
+ if (IntInit *II = dynamic_cast<IntInit*>(Arg)) {
+ // Integer arguments can't have names.
+ if (!Result->getArgName(AliasOpNo).empty())
+ throw TGError(R->getLoc(), "result argument #" + utostr(AliasOpNo) +
+ " must not have a name!");
+ if (ResultInst->Operands[i].MINumOperands != 1 ||
+ !ResultOpRec->isSubClassOf("Operand"))
+ throw TGError(R->getLoc(), "invalid argument class " +
+ ResultOpRec->getName() +
+ " for integer result operand!");
+ ResultOperands.push_back(ResultOperand(II->getValue()));
+ ++AliasOpNo;
+ continue;
+ }
+
+ throw TGError(R->getLoc(), "result of inst alias has unknown operand type");
+ }
+
+ if (AliasOpNo != Result->getNumArgs())
+ throw TGError(R->getLoc(), "result has " + utostr(Result->getNumArgs()) +
+ " arguments, but " + ResultInst->TheDef->getName() +
+ " instruction expects " + utostr(ResultInst->Operands.size())+
+ " operands!");
+}
+
+/// getResultInstOperandIndexForResultOperandIndex - Given an index into the
+/// ResultOperands array, translate it to a valid index in ResultInst's
+/// operand list.
+unsigned CodeGenInstAlias::
+getResultInstOperandIndexForResultOperandIndex(unsigned OpNo) const {
+ unsigned OpIdx = 0;
+
+ for (unsigned i = 0;; ++i) {
+ assert(i != ResultInst->Operands.size() && "Didn't find entry");
+ if (ResultInst->Operands[i].getTiedRegister() != -1)
+ continue;
+
+ if (OpIdx == OpNo) return i;
+
+ ++OpIdx;
+ }
+}
projects / oota-llvm.git / blobdiff