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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91442 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Jim Grosbach 2009-12-15 19:28:13 +00:00
parent 6404e4e795
commit f0a4fad995
1 changed files with 26 additions and 26 deletions
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52
utils/TableGen/CodeGenInstruction.cpp
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@ -23,31 +23,31 @@ static void ParseConstraint(const std::string &CStr, CodeGenInstruction *I) {
assert(pos != std::string::npos && "Unrecognized constraint");
std::string::size_type start = CStr.find_first_not_of(" \t");
std::string Name = CStr.substr(start, pos - start);
// TIED_TO: $src1 = $dst
std::string::size_type 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);
// Build the string for the operand.
std::string OpConstraint =
"((" + utostr(FlatOpNo) + " << 16) | (1 << TOI::TIED_TO))";
if (!I->OperandList[DestOp.first].Constraints[DestOp.second].empty())
throw "Operand '" + DestOpName + "' cannot have multiple constraints!";
I->OperandList[DestOp.first].Constraints[DestOp.second] = OpConstraint;
@ -56,20 +56,20 @@ static void ParseConstraint(const std::string &CStr, CodeGenInstruction *I) {
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)
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);
}
@ -145,7 +145,7 @@ CodeGenInstruction::CodeGenInstruction(Record *R, const std::string &AsmStr)
if (Rec->isSubClassOf("Operand")) {
PrintMethod = Rec->getValueAsString("PrintMethod");
MIOpInfo = Rec->getValueAsDag("MIOperandInfo");
// Verify that MIOpInfo has an 'ops' root value.
if (!dynamic_cast<DefInit*>(MIOpInfo->getOperator()) ||
dynamic_cast<DefInit*>(MIOpInfo->getOperator())
@ -165,7 +165,7 @@ CodeGenInstruction::CodeGenInstruction(Record *R, const std::string &AsmStr)
} else if (Rec->getName() == "variable_ops") {
isVariadic = true;
continue;
} else if (!Rec->isSubClassOf("RegisterClass") &&
} else if (!Rec->isSubClassOf("RegisterClass") &&
Rec->getName() != "ptr_rc" && Rec->getName() != "unknown")
throw "Unknown operand class '" + Rec->getName() +
"' in '" + R->getName() + "' instruction!";
@ -177,15 +177,15 @@ CodeGenInstruction::CodeGenInstruction(Record *R, const std::string &AsmStr)
if (!OperandNames.insert(DI->getArgName(i)).second)
throw "In instruction '" + R->getName() + "', operand #" + utostr(i) +
" has the same name as a previous operand!";
OperandList.push_back(OperandInfo(Rec, DI->getArgName(i), PrintMethod,
OperandList.push_back(OperandInfo(Rec, DI->getArgName(i), PrintMethod,
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) {
@ -194,13 +194,13 @@ CodeGenInstruction::CodeGenInstruction(Record *R, const std::string &AsmStr)
"already has constraint set!";
OperandList[1].Constraints[0] = "((0 << 16) | (1 << TOI::TIED_TO))";
}
// Any operands with unset constraints get 0 as their constraint.
for (unsigned op = 0, e = OperandList.size(); op != e; ++op)
for (unsigned j = 0, e = OperandList[op].MINumOperands; j != e; ++j)
if (OperandList[op].Constraints[j].empty())
OperandList[op].Constraints[j] = "0";
// Parse the DisableEncoding field.
std::string DisableEncoding = R->getValueAsString("DisableEncoding");
while (1) {
@ -229,15 +229,15 @@ unsigned CodeGenInstruction::getOperandNamed(const std::string &Name) const {
"' does not have an operand named '$" + Name + "'!";
}
std::pair<unsigned,unsigned>
std::pair<unsigned,unsigned>
CodeGenInstruction::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) {
@ -246,7 +246,7 @@ CodeGenInstruction::ParseOperandName(const std::string &Op,
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:
@ -255,16 +255,16 @@ CodeGenInstruction::ParseOperandName(const std::string &Op,
SubOpName.empty())
throw TheDef->getName() + ": Illegal to refer to"
" 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)