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Add support for immediates directly in the pattern, this allows itanium to

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define:

def : Pat<(i1 1), (CMPEQ r0, r0)>;


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@24149 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2005-11-02 06:49:14 +00:00
parent 55d1728ec8
commit 0614b628cf
2 changed files with 33 additions and 3 deletions
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34
utils/TableGen/DAGISelEmitter.cpp
View File

@ -621,6 +621,10 @@ TreePatternNode *TreePattern::ParseTreePattern(DagInit *Dag) {
New = new TreePatternNode(DI);
} else if (DagInit *DI = dynamic_cast<DagInit*>(Arg)) {
New = ParseTreePattern(DI);
} else if (IntInit *II = dynamic_cast<IntInit*>(Arg)) {
New = new TreePatternNode(II);
if (!Dag->getArgName(0).empty())
error("Constant int argument should not have a name!");
} else {
Arg->dump();
error("Unknown leaf value for tree pattern!");
@ -1521,7 +1525,16 @@ void DAGISelEmitter::EmitMatchForPattern(TreePatternNode *N,
const std::string &RootName,
std::map<std::string,std::string> &VarMap,
unsigned PatternNo, std::ostream &OS) {
assert(!N->isLeaf() && "Cannot match against a leaf!");
if (N->isLeaf()) {
if (IntInit *II = dynamic_cast<IntInit*>(N->getLeafValue())) {
OS << " if (cast<ConstantSDNode>(" << RootName
<< ")->getSignExtended() != " << II->getValue() << ")\n"
<< " goto P" << PatternNo << "Fail;\n";
return;
}
assert(0 && "Cannot match this as a leaf value!");
abort();
}
// If this node has a name associated with it, capture it in VarMap. If
// we already saw this in the pattern, emit code to verify dagness.
@ -1762,6 +1775,12 @@ static bool InsertOneTypeCheck(TreePatternNode *Pat, TreePatternNode *Other,
return false;
}
Record *DAGISelEmitter::getSDNodeNamed(const std::string &Name) const {
Record *N = Records.getDef(Name);
assert(N && N->isSubClassOf("SDNode") && "Bad argument");
return N;
}
/// EmitCodeForPattern - Given a pattern to match, emit code to the specified
/// stream to match the pattern, and generate the code for the match if it
/// succeeds.
@ -1897,8 +1916,17 @@ void DAGISelEmitter::EmitInstructionSelector(std::ostream &OS) {
std::map<Record*, std::vector<PatternToMatch*>,
CompareByRecordName> PatternsByOpcode;
for (unsigned i = 0, e = PatternsToMatch.size(); i != e; ++i)
PatternsByOpcode[PatternsToMatch[i].first->getOperator()]
.push_back(&PatternsToMatch[i]);
if (!PatternsToMatch[i].first->isLeaf()) {
PatternsByOpcode[PatternsToMatch[i].first->getOperator()]
.push_back(&PatternsToMatch[i]);
} else {
if (IntInit *II =
dynamic_cast<IntInit*>(PatternsToMatch[i].first->getLeafValue())) {
PatternsByOpcode[getSDNodeNamed("imm")].push_back(&PatternsToMatch[i]);
} else {
assert(0 && "Unknown leaf value");
}
}
// Loop over all of the case statements.
for (std::map<Record*, std::vector<PatternToMatch*>,

2
utils/TableGen/DAGISelEmitter.h
View File

@ -382,6 +382,8 @@ public:
const CodeGenTarget &getTargetInfo() const { return Target; }
Record *getSDNodeNamed(const std::string &Name) const;
const SDNodeInfo &getSDNodeInfo(Record *R) const {
assert(SDNodes.count(R) && "Unknown node!");
return SDNodes.find(R)->second;