//
//---------------------------------------------------------------------------
-//*************************** User Include Files ***************************/
-
#include "llvm/CodeGen/InstrForest.h"
#include "llvm/Method.h"
#include "llvm/iTerminators.h"
#include "llvm/ConstPoolVals.h"
#include "llvm/BasicBlock.h"
#include "llvm/CodeGen/MachineInstr.h"
-
+#include "llvm/Support/STLExtras.h"
//------------------------------------------------------------------------
// class InstrTreeNode
//------------------------------------------------------------------------
-
-InstrTreeNode::InstrTreeNode(InstrTreeNodeType nodeType, Value* _val)
- : treeNodeType(nodeType), val(_val) {
- LeftChild = 0;
- RightChild = 0;
- Parent = 0;
- opLabel = InvalidOp;
-}
-
void InstrTreeNode::dump(int dumpChildren, int indent) const {
dumpNode(indent);
- if (dumpChildren)
- {
- if (leftChild())
- leftChild()->dump(dumpChildren, indent+1);
- if (rightChild())
- rightChild()->dump(dumpChildren, indent+1);
- }
+ if (dumpChildren) {
+ if (leftChild())
+ leftChild()->dump(dumpChildren, indent+1);
+ if (rightChild())
+ rightChild()->dump(dumpChildren, indent+1);
+ }
}
-InstructionNode::InstructionNode(Instruction* _instr)
- : InstrTreeNode(NTInstructionNode, _instr)
-{
- OpLabel opLabel = _instr->getOpcode();
+InstructionNode::InstructionNode(Instruction* I)
+ : InstrTreeNode(NTInstructionNode, I) {
+ opLabel = I->getOpcode();
// Distinguish special cases of some instructions such as Ret and Br
//
- if (opLabel == Instruction::Ret && ((ReturnInst*) _instr)->getReturnValue())
- {
- opLabel = RetValueOp; // ret(value) operation
- }
- else if (opLabel == Instruction::Br && ! ((BranchInst*) _instr)->isUnconditional())
- {
- opLabel = BrCondOp; // br(cond) operation
- }
- else if (opLabel >= Instruction::SetEQ && opLabel <= Instruction::SetGT)
- {
- opLabel = SetCCOp; // common label for all SetCC ops
- }
- else if (opLabel == Instruction::Alloca && _instr->getNumOperands() > 0)
- {
- opLabel = AllocaN; // Alloca(ptr, N) operation
- }
- else if ((opLabel == Instruction::Load ||
- opLabel == Instruction::GetElementPtr)
- && ((MemAccessInst*)_instr)->getFirstOffsetIdx() > 0)
- {
- opLabel = opLabel + 100; // load/getElem with index vector
+ if (opLabel == Instruction::Ret && ((ReturnInst*)I)->getReturnValue()) {
+ opLabel = RetValueOp; // ret(value) operation
+ } else if (opLabel == Instruction::Br &&
+ !((BranchInst*)I)->isUnconditional()) {
+ opLabel = BrCondOp; // br(cond) operation
+ } else if (opLabel >= Instruction::SetEQ && opLabel <= Instruction::SetGT) {
+ opLabel = SetCCOp; // common label for all SetCC ops
+ } else if (opLabel == Instruction::Alloca && I->getNumOperands() > 0) {
+ opLabel = AllocaN; // Alloca(ptr, N) operation
+ } else if ((opLabel == Instruction::Load ||
+ opLabel == Instruction::GetElementPtr) &&
+ ((MemAccessInst*)I)->getFirstOffsetIdx() > 0) {
+ opLabel = opLabel + 100; // load/getElem with index vector
+ } else if (opLabel == Instruction::Cast) {
+ const Type *ITy = I->getType();
+ switch(ITy->getPrimitiveID()) {
+ case Type::BoolTyID: opLabel = ToBoolTy; break;
+ case Type::UByteTyID: opLabel = ToUByteTy; break;
+ case Type::SByteTyID: opLabel = ToSByteTy; break;
+ case Type::UShortTyID: opLabel = ToUShortTy; break;
+ case Type::ShortTyID: opLabel = ToShortTy; break;
+ case Type::UIntTyID: opLabel = ToUIntTy; break;
+ case Type::IntTyID: opLabel = ToIntTy; break;
+ case Type::ULongTyID: opLabel = ToULongTy; break;
+ case Type::LongTyID: opLabel = ToLongTy; break;
+ case Type::FloatTyID: opLabel = ToFloatTy; break;
+ case Type::DoubleTyID: opLabel = ToDoubleTy; break;
+ case Type::ArrayTyID: opLabel = ToArrayTy; break;
+ case Type::PointerTyID: opLabel = ToPointerTy; break;
+ default:
+ // Just use `Cast' opcode otherwise. It's probably ignored.
+ break;
}
- else if (opLabel == Instruction::Cast)
- {
- const Type* instrValueType = _instr->getType();
- switch(instrValueType->getPrimitiveID())
- {
- case Type::BoolTyID: opLabel = ToBoolTy; break;
- case Type::UByteTyID: opLabel = ToUByteTy; break;
- case Type::SByteTyID: opLabel = ToSByteTy; break;
- case Type::UShortTyID: opLabel = ToUShortTy; break;
- case Type::ShortTyID: opLabel = ToShortTy; break;
- case Type::UIntTyID: opLabel = ToUIntTy; break;
- case Type::IntTyID: opLabel = ToIntTy; break;
- case Type::ULongTyID: opLabel = ToULongTy; break;
- case Type::LongTyID: opLabel = ToLongTy; break;
- case Type::FloatTyID: opLabel = ToFloatTy; break;
- case Type::DoubleTyID: opLabel = ToDoubleTy; break;
- default:
- if (instrValueType->isArrayType())
- opLabel = ToArrayTy;
- else if (instrValueType->isPointerType())
- opLabel = ToPointerTy;
- else
- ; // Just use `Cast' opcode otherwise. It's probably ignored.
- break;
- }
- }
-
- this->opLabel = opLabel;
+ }
}
-void
-InstructionNode::dumpNode(int indent) const
-{
+void InstructionNode::dumpNode(int indent) const {
for (int i=0; i < indent; i++)
cout << " ";
cout << getInstruction()->getOpcodeName();
- const vector<MachineInstr*>& mvec = getInstruction()->getMachineInstrVec();
+ const vector<MachineInstr*> &mvec = getInstruction()->getMachineInstrVec();
if (mvec.size() > 0)
cout << "\tMachine Instructions: ";
- for (unsigned int i=0; i < mvec.size(); i++)
- {
- mvec[i]->dump(0);
- if (i < mvec.size() - 1)
- cout << "; ";
- }
+ for (unsigned int i=0; i < mvec.size(); i++) {
+ mvec[i]->dump(0);
+ if (i < mvec.size() - 1)
+ cout << "; ";
+ }
cout << endl;
}
-VRegListNode::VRegListNode() : InstrTreeNode(NTVRegListNode, 0) {
- opLabel = VRegListOp;
-}
-
-void
-VRegListNode::dumpNode(int indent) const
-{
+void VRegListNode::dumpNode(int indent) const {
for (int i=0; i < indent; i++)
cout << " ";
}
-VRegNode::VRegNode(Value* _val) : InstrTreeNode(NTVRegNode, _val) {
- opLabel = VRegNodeOp;
-}
-
-void
-VRegNode::dumpNode(int indent) const
-{
+void VRegNode::dumpNode(int indent) const {
for (int i=0; i < indent; i++)
cout << " ";
<< (int) getValue()->getValueType() << ")" << endl;
}
-
-ConstantNode::ConstantNode(ConstPoolVal *constVal)
- : InstrTreeNode(NTConstNode, constVal) {
- opLabel = ConstantNodeOp;
-}
-
-void
-ConstantNode::dumpNode(int indent) const
-{
+void ConstantNode::dumpNode(int indent) const {
for (int i=0; i < indent; i++)
cout << " ";
<< (int) getValue()->getValueType() << ")" << endl;
}
-
-LabelNode::LabelNode(BasicBlock *BB) : InstrTreeNode(NTLabelNode, BB) {
- opLabel = LabelNodeOp;
-}
-
-void
-LabelNode::dumpNode(int indent) const
-{
+void LabelNode::dumpNode(int indent) const {
for (int i=0; i < indent; i++)
cout << " ";
// A forest of instruction trees, usually for a single method.
//------------------------------------------------------------------------
-void
-InstrForest::buildTreesForMethod(Method *method)
-{
- for (Method::inst_iterator instrIter = method->inst_begin();
- instrIter != method->inst_end();
- ++instrIter)
- {
- Instruction *instr = *instrIter;
- (void) this->buildTreeForInstruction(instr);
- }
-}
-
-
-void
-InstrForest::dump() const
-{
- for (hash_set<InstructionNode*>::const_iterator
- treeRootIter = treeRoots.begin();
- treeRootIter != treeRoots.end();
- ++treeRootIter)
- {
- (*treeRootIter)->dump(/*dumpChildren*/ 1, /*indent*/ 0);
- }
+void InstrForest::dump() const {
+ for (hash_set<InstructionNode*>::const_iterator I = treeRoots.begin();
+ I != treeRoots.end(); ++I)
+ (*I)->dump(/*dumpChildren*/ 1, /*indent*/ 0);
}
-inline void
-InstrForest::noteTreeNodeForInstr(Instruction* instr,
- InstructionNode* treeNode)
-{
+inline void InstrForest::noteTreeNodeForInstr(Instruction *instr,
+ InstructionNode *treeNode) {
assert(treeNode->getNodeType() == InstrTreeNode::NTInstructionNode);
(*this)[instr] = treeNode;
treeRoots.insert(treeNode); // mark node as root of a new tree
}
-inline void
-InstrForest::setLeftChild(InstrTreeNode* parent, InstrTreeNode* child) {
- parent->LeftChild = child;
- child->Parent = parent;
- if (child->getNodeType() == InstrTreeNode::NTInstructionNode)
- treeRoots.erase((InstructionNode*) child); // no longer a tree root
+inline void InstrForest::setLeftChild(InstrTreeNode *Par, InstrTreeNode *Chld) {
+ Par->LeftChild = Chld;
+ Chld->Parent = Par;
+ if (Chld->getNodeType() == InstrTreeNode::NTInstructionNode)
+ treeRoots.erase((InstructionNode*)Chld); // no longer a tree root
}
-inline void
-InstrForest::setRightChild(InstrTreeNode* parent, InstrTreeNode* child)
-{
- parent->RightChild = child;
- child->Parent = parent;
- if (child->getNodeType() == InstrTreeNode::NTInstructionNode)
- treeRoots.erase((InstructionNode*) child); // no longer a tree root
+inline void InstrForest::setRightChild(InstrTreeNode *Par, InstrTreeNode *Chld){
+ Par->RightChild = Chld;
+ Chld->Parent = Par;
+ if (Chld->getNodeType() == InstrTreeNode::NTInstructionNode)
+ treeRoots.erase((InstructionNode*)Chld); // no longer a tree root
}
-InstructionNode*
-InstrForest::buildTreeForInstruction(Instruction* instr)
-{
- InstructionNode* treeNode = this->getTreeNodeForInstr(instr);
- if (treeNode != NULL)
- {// treeNode has already been constructed for this instruction
- assert(treeNode->getInstruction() == instr);
- return treeNode;
- }
+void InstrForest::buildTreesForMethod(Method *M) {
+ for_each(M->inst_begin(), M->inst_end(),
+ bind_obj(this, &InstrForest::buildTreeForInstruction));
+}
+
+InstructionNode *InstrForest::buildTreeForInstruction(Instruction *Inst) {
+ InstructionNode *treeNode = getTreeNodeForInstr(Inst);
+ if (treeNode) {
+ // treeNode has already been constructed for this instruction
+ assert(treeNode->getInstruction() == Inst);
+ return treeNode;
+ }
// Otherwise, create a new tree node for this instruction.
//
- treeNode = new InstructionNode(instr);
- this->noteTreeNodeForInstr(instr, treeNode);
+ treeNode = new InstructionNode(Inst);
+ noteTreeNodeForInstr(Inst, treeNode);
// If the instruction has more than 2 instruction operands,
// then we need to create artificial list nodes to hold them.
//
int numChildren = 0;
const unsigned int MAX_CHILD = 8;
- static InstrTreeNode* fixedChildArray[MAX_CHILD];
- InstrTreeNode** childArray =
- (instr->getNumOperands() > MAX_CHILD)
- ? new (InstrTreeNode*)[instr->getNumOperands()]
+ static InstrTreeNode *fixedChildArray[MAX_CHILD];
+ InstrTreeNode **childArray =
+ (Inst->getNumOperands() > MAX_CHILD)
+ ? new (InstrTreeNode*)[Inst->getNumOperands()]
: fixedChildArray;
//
// Walk the operands of the instruction
//
- for (Instruction::op_iterator O=instr->op_begin(); O != instr->op_end(); ++O)
- {
- Value* operand = *O;
-
- // Check if the operand is a data value, not an branch label, type,
- // method or module. If the operand is an address type (i.e., label
- // or method) that is used in an non-branching operation, e.g., `add'.
- // that should be considered a data value.
+ for (Instruction::op_iterator O = Inst->op_begin(); O != Inst->op_end(); ++O){
+ Value* operand = *O;
- // Check latter condition here just to simplify the next IF.
- bool includeAddressOperand =
- ((operand->isBasicBlock() || operand->isMethod())
- && !instr->isTerminator());
-
- if (includeAddressOperand || operand->isInstruction() ||
- operand->isConstant() || operand->isMethodArgument())
- {// This operand is a data value
-
- // An instruction that computes the incoming value is added as a
- // child of the current instruction if:
- // the value has only a single use
- // AND both instructions are in the same basic block.
- //
- // (Note that if the value has only a single use (viz., `instr'),
- // the def of the value can be safely moved just before instr
- // and therefore it is safe to combine these two instructions.)
- //
- // In all other cases, the virtual register holding the value
- // is used directly, i.e., made a child of the instruction node.
- //
- InstrTreeNode* opTreeNode;
- if (operand->isInstruction() && operand->use_size() == 1 &&
- ((Instruction*)operand)->getParent() == instr->getParent())
- {
- // Recursively create a treeNode for it.
- opTreeNode =this->buildTreeForInstruction((Instruction*)operand);
- }
- else if (ConstPoolVal *CPV = operand->castConstant())
- {
- // Create a leaf node for a constant
- opTreeNode = new ConstantNode(CPV);
- }
- else
- {
- // Create a leaf node for the virtual register
- opTreeNode = new VRegNode(operand);
- }
-
- childArray[numChildren] = opTreeNode;
- numChildren++;
- }
+ // Check if the operand is a data value, not an branch label, type,
+ // method or module. If the operand is an address type (i.e., label
+ // or method) that is used in an non-branching operation, e.g., `add'.
+ // that should be considered a data value.
+
+ // Check latter condition here just to simplify the next IF.
+ bool includeAddressOperand =
+ (operand->isBasicBlock() || operand->isMethod())
+ && !Inst->isTerminator();
+
+ if (includeAddressOperand || operand->isInstruction() ||
+ operand->isConstant() || operand->isMethodArgument()) {
+ // This operand is a data value
+
+ // An instruction that computes the incoming value is added as a
+ // child of the current instruction if:
+ // the value has only a single use
+ // AND both instructions are in the same basic block.
+ //
+ // (Note that if the value has only a single use (viz., `instr'),
+ // the def of the value can be safely moved just before instr
+ // and therefore it is safe to combine these two instructions.)
+ //
+ // In all other cases, the virtual register holding the value
+ // is used directly, i.e., made a child of the instruction node.
+ //
+ InstrTreeNode* opTreeNode;
+ if (operand->isInstruction() && operand->use_size() == 1 &&
+ ((Instruction*)operand)->getParent() == Inst->getParent()) {
+ // Recursively create a treeNode for it.
+ opTreeNode = buildTreeForInstruction((Instruction*)operand);
+ } else if (ConstPoolVal *CPV = operand->castConstant()) {
+ // Create a leaf node for a constant
+ opTreeNode = new ConstantNode(CPV);
+ } else {
+ // Create a leaf node for the virtual register
+ opTreeNode = new VRegNode(operand);
+ }
+
+ childArray[numChildren++] = opTreeNode;
}
+ }
//--------------------------------------------------------------------
// Add any selected operands as children in the tree.
// and VRegList nodes as internal nodes.
//--------------------------------------------------------------------
- InstrTreeNode* parent = treeNode; // new VRegListNode();
- int n;
+ InstrTreeNode *parent = treeNode;
- if (numChildren > 2)
- {
- unsigned instrOpcode = treeNode->getInstruction()->getOpcode();
- assert(instrOpcode == Instruction::PHINode ||
- instrOpcode == Instruction::Call ||
- instrOpcode == Instruction::Load ||
- instrOpcode == Instruction::Store ||
- instrOpcode == Instruction::GetElementPtr);
- }
+ if (numChildren > 2) {
+ unsigned instrOpcode = treeNode->getInstruction()->getOpcode();
+ assert(instrOpcode == Instruction::PHINode ||
+ instrOpcode == Instruction::Call ||
+ instrOpcode == Instruction::Load ||
+ instrOpcode == Instruction::Store ||
+ instrOpcode == Instruction::GetElementPtr);
+ }
// Insert the first child as a direct child
if (numChildren >= 1)
- this->setLeftChild(parent, childArray[0]);
+ setLeftChild(parent, childArray[0]);
+
+ int n;
// Create a list node for children 2 .. N-1, if any
- for (n = numChildren-1; n >= 2; n--)
- { // We have more than two children
- InstrTreeNode* listNode = new VRegListNode();
- this->setRightChild(parent, listNode);
- this->setLeftChild(listNode, childArray[numChildren - n]);
- parent = listNode;
- }
+ for (n = numChildren-1; n >= 2; n--) {
+ // We have more than two children
+ InstrTreeNode *listNode = new VRegListNode();
+ setRightChild(parent, listNode);
+ setLeftChild(listNode, childArray[numChildren - n]);
+ parent = listNode;
+ }
// Now insert the last remaining child (if any).
- if (numChildren >= 2)
- {
- assert(n == 1);
- this->setRightChild(parent, childArray[numChildren - 1]);
- }
+ if (numChildren >= 2) {
+ assert(n == 1);
+ setRightChild(parent, childArray[numChildren - 1]);
+ }
if (childArray != fixedChildArray)
- {
- delete[] childArray;
- }
+ delete [] childArray;
return treeNode;
}
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