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improve type checking of SDNode operand count. This rejects all cases

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where an incorrect number of operands is provided to an sdnode instead
of just a few cases.

llvm-svn: 99761
This commit is contained in:
Chris Lattner 2010-03-28 08:48:47 +00:00
parent 4de7f7e862
commit 117eb269f9
2 changed files with 10 additions and 8 deletions
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15
utils/TableGen/CodeGenDAGPatterns.cpp
View File

@ -586,13 +586,6 @@ static TreePatternNode *getOperandNum(unsigned OpNo, TreePatternNode *N,
bool SDTypeConstraint::ApplyTypeConstraint(TreePatternNode *N,
const SDNodeInfo &NodeInfo,
TreePattern &TP) const {
// Check that the number of operands is sane. Negative operands -> varargs.
if (NodeInfo.getNumOperands() >= 0) {
if (N->getNumChildren() != (unsigned)NodeInfo.getNumOperands())
TP.error(N->getOperator()->getName() + " node requires exactly " +
itostr(NodeInfo.getNumOperands()) + " operands!");
}
unsigned ResNo = 0; // The result number being referenced.
TreePatternNode *NodeToApply = getOperandNum(OperandNo, N, NodeInfo, ResNo);
@ -1238,6 +1231,12 @@ bool TreePatternNode::ApplyTypeConstraints(TreePattern &TP, bool NotRegisters) {
if (getOperator()->isSubClassOf("SDNode")) {
const SDNodeInfo &NI = CDP.getSDNodeInfo(getOperator());
// Check that the number of operands is sane. Negative operands -> varargs.
if (NI.getNumOperands() >= 0 &&
getNumChildren() != (unsigned)NI.getNumOperands())
TP.error(getOperator()->getName() + " node requires exactly " +
itostr(NI.getNumOperands()) + " operands!");
bool MadeChange = NI.ApplyTypeConstraints(this, TP);
for (unsigned i = 0, e = getNumChildren(); i != e; ++i)
MadeChange |= getChild(i)->ApplyTypeConstraints(TP, NotRegisters);
@ -1469,7 +1468,7 @@ TreePatternNode *TreePattern::ParseTreePattern(Init *TheInit, StringRef OpName){
// Input argument?
TreePatternNode *Res = new TreePatternNode(DI, 1);
if (R->getName() == "node") {
if (R->getName() == "node" && !OpName.empty()) {
if (OpName.empty())
error("'node' argument requires a name to match with operand list");
Args.push_back(OpName);

3
utils/TableGen/CodeGenDAGPatterns.h
View File

@ -199,6 +199,9 @@ public:
SDNodeInfo(Record *R); // Parse the specified record.
unsigned getNumResults() const { return NumResults; }
/// getNumOperands - This is the number of operands required or -1 if
/// variadic.
int getNumOperands() const { return NumOperands; }
Record *getRecord() const { return Def; }
const std::string &getEnumName() const { return EnumName; }