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//===-- SelectionDAG.cpp - Implement the SelectionDAG* classes ------------===//
//
// This file implements the SelectionDAG* classes, which are used to perform
// DAG-based instruction selection in a target-specific manner.
//
//===----------------------------------------------------------------------===//
#include "llvm/CodeGen/SelectionDAG.h"
#include "llvm/Type.h"
SelectionDAG::~SelectionDAG() {
for (unsigned i = 0, e = AllNodes.size(); i != e; ++i)
delete AllNodes[i];
}
/// dump - Print out the current Selection DAG...
void SelectionDAG::dump() const {
Root->dump(); // Print from the root...
}
/// getValueType - Return the ValueType for the specified LLVM type. This
/// method works on all scalar LLVM types.
///
MVT::ValueType SelectionDAG::getValueType(const Type *Ty) const {
switch (Ty->getPrimitiveID()) {
case Type::VoidTyID: assert(0 && "Void type object in getValueType!");
default: assert(0 && "Unknown type in DAGBuilder!\n");
case Type::BoolTyID: return MVT::i1;
case Type::SByteTyID:
case Type::UByteTyID: return MVT::i8;
case Type::ShortTyID:
case Type::UShortTyID: return MVT::i16;
case Type::IntTyID:
case Type::UIntTyID: return MVT::i32;
case Type::LongTyID:
case Type::ULongTyID: return MVT::i64;
case Type::FloatTyID: return MVT::f32;
case Type::DoubleTyID: return MVT::f64;
case Type::PointerTyID: return PointerType;
}
}
void SelectionDAGNode::dump() const {
// Print out the DAG in post-order
std::map<const SelectionDAGNode*, unsigned> NodeIDs;
unsigned ID = 0;
printit(0, ID, NodeIDs);
}
void SelectionDAGNode::printit(unsigned Offset, unsigned &LastID,
std::map<const SelectionDAGNode*,
unsigned> &NodeIDs) const {
if (!NodeIDs.count(this)) {
// Emit all of the uses first...
for (unsigned i = 0, e = Uses.size(); i != e; ++i)
Uses[i]->printit(Offset+1, LastID, NodeIDs);
NodeIDs[this] = LastID++;
std::cerr << std::string(Offset, ' ') << "#" << LastID-1 << " ";
} else {
// Node has already been emitted...
std::cerr << std::string(Offset, ' ') << "#" << NodeIDs[this] << " ";
}
switch (ValueType) {
case MVT::isVoid: std::cerr << "V:"; break;
case MVT::i1: std::cerr << "i1:"; break;
case MVT::i8: std::cerr << "i8:"; break;
case MVT::i16: std::cerr << "i16:"; break;
case MVT::i32: std::cerr << "i32:"; break;
case MVT::i64: std::cerr << "i64:"; break;
case MVT::f32: std::cerr << "f32:"; break;
case MVT::f64: std::cerr << "f64:"; break;
default: assert(0 && "Invalid node ValueType!");
}
switch (NodeType) {
case ISD::ChainNode: std::cerr << "ChainNode"; break;
case ISD::BlockChainNode: std::cerr << "BlockChainNode"; break;
case ISD::ProtoNode: std::cerr << "ProtoNode"; break;
case ISD::Constant: std::cerr << "Constant"; break;
case ISD::FrameIndex: std::cerr << "FrameIndex"; break;
case ISD::Plus: std::cerr << "Plus"; break;
case ISD::Minus: std::cerr << "Minus"; break;
case ISD::Times: std::cerr << "Times"; break;
case ISD::SDiv: std::cerr << "SDiv"; break;
case ISD::UDiv: std::cerr << "UDiv"; break;
case ISD::SRem: std::cerr << "SRem"; break;
case ISD::URem: std::cerr << "URem"; break;
case ISD::And: std::cerr << "And"; break;
case ISD::Or: std::cerr << "Or"; break;
case ISD::Xor: std::cerr << "Xor"; break;
case ISD::Br: std::cerr << "Br"; break;
case ISD::Switch: std::cerr << "Switch"; break;
case ISD::Ret: std::cerr << "Ret"; break;
case ISD::RetVoid: std::cerr << "RetVoid"; break;
case ISD::Load: std::cerr << "Load"; break;
case ISD::Store: std::cerr << "Store"; break;
case ISD::PHI: std::cerr << "PHI"; break;
case ISD::Call: std::cerr << "Call"; break;
}
std::cerr << "\n";
}
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