6502/llvm-6502
1
0
Fork 0
mirror of https://github.com/c64scene-ar/llvm-6502.git synced 2024-12-14 11:32:34 +00:00
Code Issues Projects Releases Wiki Activity

Implement autopromotion of leaf trees from arguments to nodes of their own,

Browse Source 
making it easier to write patterns without lots of extraneous parens


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@7714 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2003-08-10 22:38:36 +00:00
parent 91290d7e9a
commit 990db46e9a
4 changed files with 68 additions and 26 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

42
support/tools/TableGen/InstrSelectorEmitter.cpp
View File

@ -167,19 +167,20 @@ MVT::ValueType Pattern::getIntrinsicType(Record *R) const {
return MVT::Other;
}
throw "Error: Unknown value used: " + R->getName();
error("Unknown value used: " + R->getName());
return MVT::Other;
}
TreePatternNode *Pattern::ParseTreePattern(DagInit *DI) {
Record *Operator = DI->getNodeType();
TreePatternNode *Pattern::ParseTreePattern(DagInit *Dag) {
Record *Operator = Dag->getNodeType();
if (Operator->isSubClassOf("ValueType")) {
// If the operator is a ValueType, then this must be "type cast" of a leaf
// node.
if (DI->getNumArgs() != 1)
if (Dag->getNumArgs() != 1)
error("Type cast only valid for a leaf node!");
Init *Arg = DI->getArg(0);
Init *Arg = Dag->getArg(0);
TreePatternNode *New;
if (DefInit *DI = dynamic_cast<DefInit*>(Arg)) {
New = new TreePatternNode(DI);
@ -200,14 +201,22 @@ TreePatternNode *Pattern::ParseTreePattern(DagInit *DI) {
std::vector<TreePatternNode*> Children;
for (unsigned i = 0, e = DI->getNumArgs(); i != e; ++i) {
Init *Arg = DI->getArg(i);
for (unsigned i = 0, e = Dag->getNumArgs(); i != e; ++i) {
Init *Arg = Dag->getArg(i);
if (DagInit *DI = dynamic_cast<DagInit*>(Arg)) {
Children.push_back(ParseTreePattern(DI));
} else if (DefInit *DI = dynamic_cast<DefInit*>(Arg)) {
Children.push_back(new TreePatternNode(DI));
// If it's a regclass or something else known, set the type.
Children.back()->setType(getIntrinsicType(DI->getDef()));
} else if (DefInit *DefI = dynamic_cast<DefInit*>(Arg)) {
Record *R = DefI->getDef();
// Direct reference to a leaf DagNode? Turn it into a DagNode if its own.
if (R->isSubClassOf("DagNode")) {
Dag->setArg(i, new DagInit(R,
std::vector<std::pair<Init*, std::string> >()));
--i; // Revisit this node...
} else {
Children.push_back(new TreePatternNode(DefI));
// If it's a regclass or something else known, set the type.
Children.back()->setType(getIntrinsicType(R));
}
} else {
Arg->dump();
error("Unknown leaf value for tree pattern!");
@ -524,8 +533,15 @@ void InstrSelectorEmitter::CalculateComputableValues() {
// Loop over all of the patterns, adding them to the ComputableValues map
for (std::map<Record*, Pattern*>::iterator I = Patterns.begin(),
E = Patterns.end(); I != E; ++I)
if (I->second->isResolved())
ComputableValues.addPattern(I->second);
if (I->second->isResolved()) {
// We don't want to add patterns like R32 = R32. This is a hack working
// around a special case of a general problem, but for now we explicitly
// forbid these patterns. They can never match anyway.
Pattern *P = I->second;
if (!P->getResult() || !P->getTree()->isLeaf() ||
P->getResult() != P->getTree()->getValueRecord())
ComputableValues.addPattern(P);
}
}
#if 0

5
support/tools/TableGen/Record.h
View File

@ -619,6 +619,11 @@ public:
return ArgNames[Num];
}
void setArg(unsigned Num, Init *I) {
assert(Num < Args.size() && "Arg number out of range!");
Args[Num] = I;
}
virtual void print(std::ostream &OS) const;
};

42
utils/TableGen/InstrSelectorEmitter.cpp
View File

@ -167,19 +167,20 @@ MVT::ValueType Pattern::getIntrinsicType(Record *R) const {
return MVT::Other;
}
throw "Error: Unknown value used: " + R->getName();
error("Unknown value used: " + R->getName());
return MVT::Other;
}
TreePatternNode *Pattern::ParseTreePattern(DagInit *DI) {
Record *Operator = DI->getNodeType();
TreePatternNode *Pattern::ParseTreePattern(DagInit *Dag) {
Record *Operator = Dag->getNodeType();
if (Operator->isSubClassOf("ValueType")) {
// If the operator is a ValueType, then this must be "type cast" of a leaf
// node.
if (DI->getNumArgs() != 1)
if (Dag->getNumArgs() != 1)
error("Type cast only valid for a leaf node!");
Init *Arg = DI->getArg(0);
Init *Arg = Dag->getArg(0);
TreePatternNode *New;
if (DefInit *DI = dynamic_cast<DefInit*>(Arg)) {
New = new TreePatternNode(DI);
@ -200,14 +201,22 @@ TreePatternNode *Pattern::ParseTreePattern(DagInit *DI) {
std::vector<TreePatternNode*> Children;
for (unsigned i = 0, e = DI->getNumArgs(); i != e; ++i) {
Init *Arg = DI->getArg(i);
for (unsigned i = 0, e = Dag->getNumArgs(); i != e; ++i) {
Init *Arg = Dag->getArg(i);
if (DagInit *DI = dynamic_cast<DagInit*>(Arg)) {
Children.push_back(ParseTreePattern(DI));
} else if (DefInit *DI = dynamic_cast<DefInit*>(Arg)) {
Children.push_back(new TreePatternNode(DI));
// If it's a regclass or something else known, set the type.
Children.back()->setType(getIntrinsicType(DI->getDef()));
} else if (DefInit *DefI = dynamic_cast<DefInit*>(Arg)) {
Record *R = DefI->getDef();
// Direct reference to a leaf DagNode? Turn it into a DagNode if its own.
if (R->isSubClassOf("DagNode")) {
Dag->setArg(i, new DagInit(R,
std::vector<std::pair<Init*, std::string> >()));
--i; // Revisit this node...
} else {
Children.push_back(new TreePatternNode(DefI));
// If it's a regclass or something else known, set the type.
Children.back()->setType(getIntrinsicType(R));
}
} else {
Arg->dump();
error("Unknown leaf value for tree pattern!");
@ -524,8 +533,15 @@ void InstrSelectorEmitter::CalculateComputableValues() {
// Loop over all of the patterns, adding them to the ComputableValues map
for (std::map<Record*, Pattern*>::iterator I = Patterns.begin(),
E = Patterns.end(); I != E; ++I)
if (I->second->isResolved())
ComputableValues.addPattern(I->second);
if (I->second->isResolved()) {
// We don't want to add patterns like R32 = R32. This is a hack working
// around a special case of a general problem, but for now we explicitly
// forbid these patterns. They can never match anyway.
Pattern *P = I->second;
if (!P->getResult() || !P->getTree()->isLeaf() ||
P->getResult() != P->getTree()->getValueRecord())
ComputableValues.addPattern(P);
}
}
#if 0

5
utils/TableGen/Record.h
View File

@ -619,6 +619,11 @@ public:
return ArgNames[Num];
}
void setArg(unsigned Num, Init *I) {
assert(Num < Args.size() && "Arg number out of range!");
Args[Num] = I;
}
virtual void print(std::ostream &OS) const;
};