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Convert this code from using annotations to using a local map

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llvm-svn: 9310
This commit is contained in:
Chris Lattner 2003-10-20 20:52:23 +00:00
parent f9b97fda86
commit 489483fe88
3 changed files with 25 additions and 45 deletions
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25
lib/Analysis/LiveVar/BBLiveVar.cpp
View File

@ -21,27 +21,9 @@
/// BROKEN: Should not include sparc stuff directly into here
#include "../../Target/Sparc/SparcInternals.h" // Only for PHI defn
static AnnotationID AID(AnnotationManager::getID("Analysis::BBLiveVar"));
BBLiveVar *BBLiveVar::CreateOnBB(const BasicBlock &BB, MachineBasicBlock &MBB,
unsigned POID) {
BBLiveVar *Result = new BBLiveVar(BB, MBB, POID);
BB.addAnnotation(Result);
return Result;
}
BBLiveVar *BBLiveVar::GetFromBB(const BasicBlock &BB) {
return (BBLiveVar*)BB.getAnnotation(AID);
}
void BBLiveVar::RemoveFromBB(const BasicBlock &BB) {
bool Deleted = BB.deleteAnnotation(AID);
assert(Deleted && "BBLiveVar annotation did not exist!");
}
BBLiveVar::BBLiveVar(const BasicBlock &bb, MachineBasicBlock &mbb, unsigned id)
: Annotation(AID), BB(bb), MBB(mbb), POID(id) {
: BB(bb), MBB(mbb), POID(id) {
InSetChanged = OutSetChanged = false;
calcDefUseSets();
@ -205,7 +187,8 @@ bool BBLiveVar::setPropagate(ValueSet *OutSet, const ValueSet *InSet,
// propagates in set to OutSets of PREDECESSORs
//-----------------------------------------------------------------------------
bool BBLiveVar::applyFlowFunc() {
bool BBLiveVar::applyFlowFunc(hash_map<const BasicBlock*,
BBLiveVar*> &BBLiveVarInfo) {
// IMPORTANT: caller should check whether inset changed
// (else no point in calling)
@ -216,7 +199,7 @@ bool BBLiveVar::applyFlowFunc() {
for (pred_const_iterator PI = pred_begin(&BB), PE = pred_end(&BB);
PI != PE ; ++PI) {
BBLiveVar *PredLVBB = BBLiveVar::GetFromBB(**PI);
BBLiveVar *PredLVBB = BBLiveVarInfo[*PI];
// do set union
if (setPropagate(&PredLVBB->OutSet, &InSet, *PI)) {

16
lib/Analysis/LiveVar/BBLiveVar.h
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@ -9,8 +9,7 @@
#define LIVE_VAR_BB_H
#include "llvm/CodeGen/ValueSet.h"
#include "Support/Annotation.h"
#include <map>
#include "Support/hash_map"
class BasicBlock;
class Value;
class MachineBasicBlock;
@ -24,7 +23,7 @@ enum LiveVarDebugLevel_t {
extern LiveVarDebugLevel_t DEBUG_LV;
class BBLiveVar : public Annotation {
class BBLiveVar {
const BasicBlock &BB; // pointer to BasicBlock
MachineBasicBlock &MBB; // Pointer to MachineBasicBlock
unsigned POID; // Post-Order ID
@ -36,7 +35,7 @@ class BBLiveVar : public Annotation {
// map that contains PredBB -> Phi arguments
// coming in on that edge. such uses have to be
// treated differently from ordinary uses.
std::map<const BasicBlock *, ValueSet> PredToEdgeInSetMap;
hash_map<const BasicBlock *, ValueSet> PredToEdgeInSetMap;
// method to propagate an InSet to OutSet of a predecessor
bool setPropagate(ValueSet *OutSetOfPred,
@ -50,14 +49,9 @@ class BBLiveVar : public Annotation {
void addUse(const Value *Op);
void calcDefUseSets(); // calculates the Def & Use sets for this BB
public:
BBLiveVar(const BasicBlock &BB, MachineBasicBlock &MBB, unsigned POID);
~BBLiveVar() {} // make dtor private
public:
static BBLiveVar *CreateOnBB(const BasicBlock &BB, MachineBasicBlock &MBB,
unsigned POID);
static BBLiveVar *GetFromBB(const BasicBlock &BB);
static void RemoveFromBB(const BasicBlock &BB);
inline bool isInSetChanged() const { return InSetChanged; }
inline bool isOutSetChanged() const { return OutSetChanged; }
@ -69,7 +63,7 @@ class BBLiveVar : public Annotation {
bool applyTransferFunc(); // calcultes the In in terms of Out
// calculates Out set using In sets of the predecessors
bool applyFlowFunc();
bool applyFlowFunc(hash_map<const BasicBlock*, BBLiveVar*> &BBLiveVarInfo);
inline const ValueSet &getOutSet() const { return OutSet; }
inline ValueSet &getOutSet() { return OutSet; }

29
lib/Analysis/LiveVar/FunctionLiveVarInfo.cpp
View File

@ -47,18 +47,18 @@ clEnumValN(LV_DEBUG_Verbose, "v", "print def, use sets for every instrn also"),
// gets OutSet of a BB
const ValueSet &FunctionLiveVarInfo::getOutSetOfBB(const BasicBlock *BB) const {
return BBLiveVar::GetFromBB(*BB)->getOutSet();
return BBLiveVarInfo.find(BB)->second->getOutSet();
}
ValueSet &FunctionLiveVarInfo::getOutSetOfBB(const BasicBlock *BB) {
return BBLiveVar::GetFromBB(*BB)->getOutSet();
return BBLiveVarInfo[BB]->getOutSet();
}
// gets InSet of a BB
const ValueSet &FunctionLiveVarInfo::getInSetOfBB(const BasicBlock *BB) const {
return BBLiveVar::GetFromBB(*BB)->getInSet();
return BBLiveVarInfo.find(BB)->second->getInSet();
}
ValueSet &FunctionLiveVarInfo::getInSetOfBB(const BasicBlock *BB) {
return BBLiveVar::GetFromBB(*BB)->getInSet();
ValueSet &FunctionLiveVarInfo::getInSetOfBB(const BasicBlock *BB) {
return BBLiveVarInfo[BB]->getInSet();
}
@ -103,15 +103,16 @@ void FunctionLiveVarInfo::constructBBs(const Function *F) {
std::map<const BasicBlock*, unsigned>::iterator POI = PONumbering.find(&BB);
if (POI != PONumbering.end()) {
// create a new BBLiveVar
LVBB = BBLiveVar::CreateOnBB(BB, *I, POId);
LVBB = new BBLiveVar(BB, *I, POId);
} else {
// The PO iterator does not discover unreachable blocks, but the random
// iterator later may access these blocks. We must make sure to
// initialize unreachable blocks as well. However, LV info is not correct
// for those blocks (they are not analyzed)
//
LVBB = BBLiveVar::CreateOnBB(BB, *I, ++POId);
LVBB = new BBLiveVar(BB, *I, ++POId);
}
BBLiveVarInfo[&BB] = LVBB;
if (DEBUG_LV)
LVBB->printAllSets();
@ -130,7 +131,7 @@ bool FunctionLiveVarInfo::doSingleBackwardPass(const Function *M,
bool NeedAnotherIteration = false;
for (po_iterator<const Function*> BBI = po_begin(M), BBE = po_end(M);
BBI != BBE; ++BBI) {
BBLiveVar *LVBB = BBLiveVar::GetFromBB(**BBI);
BBLiveVar *LVBB = BBLiveVarInfo[*BBI];
assert(LVBB && "BasicBlock information not set for block!");
if (DEBUG_LV) std::cerr << " For BB " << (*BBI)->getName() << ":\n";
@ -142,7 +143,7 @@ bool FunctionLiveVarInfo::doSingleBackwardPass(const Function *M,
// OutSets are initialized to EMPTY. Recompute on first iter or if InSet
// changed.
if (iter == 0 || LVBB->isInSetChanged()) // to calc Outsets of preds
NeedAnotherIteration |= LVBB->applyFlowFunc();
NeedAnotherIteration |= LVBB->applyFlowFunc(BBLiveVarInfo);
if (DEBUG_LV) LVBB->printInOutSets();
}
@ -153,10 +154,12 @@ bool FunctionLiveVarInfo::doSingleBackwardPass(const Function *M,
void FunctionLiveVarInfo::releaseMemory() {
// First remove all BBLiveVar annotations created in constructBBs().
if (M)
// First remove all BBLiveVars created in constructBBs().
if (M) {
for (Function::const_iterator I = M->begin(), E = M->end(); I != E; ++I)
BBLiveVar::RemoveFromBB(*I);
delete BBLiveVarInfo[I];
BBLiveVarInfo.clear();
}
M = 0;
// Then delete all objects of type ValueSet created in calcLiveVarSetsForBB
@ -263,7 +266,7 @@ static void applyTranferFuncForMInst(ValueSet &LVS, const MachineInstr *MInst) {
//-----------------------------------------------------------------------------
void FunctionLiveVarInfo::calcLiveVarSetsForBB(const BasicBlock *BB) {
BBLiveVar *BBLV = BBLiveVar::GetFromBB(*BB);
BBLiveVar *BBLV = BBLiveVarInfo[BB];
assert(BBLV && "BBLiveVar annotation doesn't exist?");
const MachineBasicBlock &MIVec = BBLV->getMachineBasicBlock();
const MachineFunction &MF = MachineFunction::get(M);