-//===-- MSchedGraph.cpp - Scheduling Graph ------------------------*- C++ -*-===//
+//===-- MSchedGraph.cpp - Scheduling Graph ----------------------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
#include "../../Target/SparcV9/SparcV9RegisterInfo.h"
#include "llvm/CodeGen/MachineBasicBlock.h"
#include "llvm/Target/TargetInstrInfo.h"
-#include "Support/Debug.h"
-#include <iostream>
+#include "llvm/Support/Debug.h"
+#include <cstdlib>
using namespace llvm;
MSchedGraphNode::MSchedGraphNode(const MachineInstr* inst,
MSchedGraphEdge MSchedGraphNode::getInEdge(MSchedGraphNode *pred) {
//Loop over all the successors of our predecessor
//return the edge the corresponds to this in edge
- for(MSchedGraphNode::succ_iterator I = pred->succ_begin(), E = pred->succ_end();
- I != E; ++I) {
- if(*I == this)
+ for (MSchedGraphNode::succ_iterator I = pred->succ_begin(),
+ E = pred->succ_end(); I != E; ++I) {
+ if (*I == this)
return I.getEdge();
}
assert(0 && "Should have found edge between this node and its predecessor!");
-
+ abort();
}
unsigned MSchedGraphNode::getInEdgeNum(MSchedGraphNode *pred) {
void MSchedGraph::buildNodesAndEdges() {
//Get Machine target information for calculating latency
- const TargetInstrInfo &MTI = Target.getInstrInfo();
+ const TargetInstrInfo *MTI = Target.getInstrInfo();
std::vector<MSchedGraphNode*> memInstructions;
std::map<int, std::vector<OpIndexNodePair> > regNumtoNodeMap;
#if 0 // FIXME: LOOK INTO THIS
//Check if subsequent instructions can be issued before
//the result is ready, if so use min delay.
- if(MTI.hasResultInterlock(MIopCode))
- delay = MTI.minLatency(MIopCode);
+ if(MTI->hasResultInterlock(MIopCode))
+ delay = MTI->minLatency(MIopCode);
else
#endif
//Get delay
- delay = MTI.maxLatency(opCode);
+ delay = MTI->maxLatency(opCode);
//Create new node for this machine instruction and add to the graph.
//Create only if not a nop
- if(MTI.isNop(opCode))
+ if(MTI->isNop(opCode))
continue;
//Add PHI to phi instruction list to be processed later
bool isBranch = false;
//We want to flag the branch node to treat it special
- if(MTI.isBranch(opCode))
+ if(MTI->isBranch(opCode))
isBranch = true;
//Node is created and added to the graph automatically
DEBUG(std::cerr << "Created Node: " << *node << "\n");
//Check OpCode to keep track of memory operations to add memory dependencies later.
- if(MTI.isLoad(opCode) || MTI.isStore(opCode))
+ if(MTI->isLoad(opCode) || MTI->isStore(opCode))
memInstructions.push_back(node);
//Loop over all operands, and put them into the register number to
void MSchedGraph::addMemEdges(const std::vector<MSchedGraphNode*>& memInst) {
//Get Target machine instruction info
- const TargetInstrInfo& TMI = Target.getInstrInfo();
+ const TargetInstrInfo *TMI = Target.getInstrInfo();
//Loop over all memory instructions in the vector
//Knowing that they are in execution, add true, anti, and output dependencies
for(unsigned destIndex = srcIndex + 1; destIndex < memInst.size(); ++destIndex) {
//source is a Load, so add anti-dependencies (store after load)
- if(TMI.isLoad(srcNodeOpCode))
- if(TMI.isStore(memInst[destIndex]->getInst()->getOpcode()))
+ if(TMI->isLoad(srcNodeOpCode))
+ if(TMI->isStore(memInst[destIndex]->getInst()->getOpcode()))
memInst[srcIndex]->addOutEdge(memInst[destIndex],
MSchedGraphEdge::MemoryDep,
MSchedGraphEdge::AntiDep);
//If source is a store, add output and true dependencies
- if(TMI.isStore(srcNodeOpCode)) {
- if(TMI.isStore(memInst[destIndex]->getInst()->getOpcode()))
+ if(TMI->isStore(srcNodeOpCode)) {
+ if(TMI->isStore(memInst[destIndex]->getInst()->getOpcode()))
memInst[srcIndex]->addOutEdge(memInst[destIndex],
MSchedGraphEdge::MemoryDep,
MSchedGraphEdge::OutputDep);
//All instructions before the src in execution order have an iteration delay of 1
for(unsigned destIndex = 0; destIndex < srcIndex; ++destIndex) {
//source is a Load, so add anti-dependencies (store after load)
- if(TMI.isLoad(srcNodeOpCode))
- if(TMI.isStore(memInst[destIndex]->getInst()->getOpcode()))
+ if(TMI->isLoad(srcNodeOpCode))
+ if(TMI->isStore(memInst[destIndex]->getInst()->getOpcode()))
memInst[srcIndex]->addOutEdge(memInst[destIndex],
MSchedGraphEdge::MemoryDep,
MSchedGraphEdge::AntiDep, 1);
- if(TMI.isStore(srcNodeOpCode)) {
- if(TMI.isStore(memInst[destIndex]->getInst()->getOpcode()))
+ if(TMI->isStore(srcNodeOpCode)) {
+ if(TMI->isStore(memInst[destIndex]->getInst()->getOpcode()))
memInst[srcIndex]->addOutEdge(memInst[destIndex],
MSchedGraphEdge::MemoryDep,
MSchedGraphEdge::OutputDep, 1);