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Convert BBLiveVar to be a BasicBlock annotation, this removes the BB2BBLVMap from MethodLiveVarInfo.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@1721 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner
2002-02-05 06:52:25 +00:00
parent 2f898d2074
commit 6357a3f42d
8 changed files with 118 additions and 76 deletions
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36
lib/Analysis/LiveVar/FunctionLiveVarInfo.cpp
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@@ -21,12 +21,12 @@ AnalysisID MethodLiveVarInfo::ID(AnalysisID::create<MethodLiveVarInfo>());
// gets OutSet of a BB
const ValueSet &MethodLiveVarInfo::getOutSetOfBB(const BasicBlock *BB) const {
return BB2BBLVMap.find(BB)->second->getOutSet();
return BBLiveVar::GetFromBB(BB)->getOutSet();
}
// gets InSet of a BB
const ValueSet &MethodLiveVarInfo::getInSetOfBB(const BasicBlock *BB) const {
return BB2BBLVMap.find(BB)->second->getInSet();
return BBLiveVar::GetFromBB(BB)->getInSet();
}
@@ -34,13 +34,14 @@ const ValueSet &MethodLiveVarInfo::getInSetOfBB(const BasicBlock *BB) const {
// Performs live var analysis for a method
//-----------------------------------------------------------------------------
bool MethodLiveVarInfo::runOnMethod(Method *M) {
bool MethodLiveVarInfo::runOnMethod(Method *Meth) {
M = Meth;
if (DEBUG_LV) std::cerr << "Analysing live variables ...\n";
// create and initialize all the BBLiveVars of the CFG
constructBBs(M);
constructBBs(Meth);
while (doSingleBackwardPass(M))
while (doSingleBackwardPass(Meth))
; // Iterate until we are done.
if (DEBUG_LV) std::cerr << "Live Variable Analysis complete!\n";
@@ -62,8 +63,7 @@ void MethodLiveVarInfo::constructBBs(const Method *M) {
if (DEBUG_LV) std::cerr << " For BB " << RAV(BB) << ":\n";
// create a new BBLiveVar
BBLiveVar *LVBB = new BBLiveVar(BB, POId);
BB2BBLVMap[BB] = LVBB; // insert the pair to Map
BBLiveVar *LVBB = BBLiveVar::CreateOnBB(BB, POId);
if (DEBUG_LV)
LVBB->printAllSets();
@@ -76,8 +76,8 @@ void MethodLiveVarInfo::constructBBs(const Method *M) {
//
for (Method::const_iterator BBRI = M->begin(), BBRE = M->end();
BBRI != BBRE; ++BBRI, ++POId)
if (!BB2BBLVMap[*BBRI]) // Not yet processed?
BB2BBLVMap[*BBRI] = new BBLiveVar(*BBRI, POId);
if (!BBLiveVar::GetFromBB(*BBRI)) // Not yet processed?
BBLiveVar::CreateOnBB(*BBRI, POId);
}
@@ -90,7 +90,7 @@ bool MethodLiveVarInfo::doSingleBackwardPass(const Method *M) {
bool NeedAnotherIteration = false;
for (po_iterator<const Method*> BBI = po_begin(M); BBI != po_end(M) ; ++BBI) {
BBLiveVar *LVBB = BB2BBLVMap[*BBI];
BBLiveVar *LVBB = BBLiveVar::GetFromBB(*BBI);
assert(LVBB && "BasicBlock information not set for block!");
if (DEBUG_LV) std::cerr << " For BB " << (*BBI)->getName() << ":\n";
@@ -99,7 +99,7 @@ bool MethodLiveVarInfo::doSingleBackwardPass(const Method *M) {
LVBB->applyTransferFunc(); // apply the Tran Func to calc InSet
if (LVBB->isInSetChanged()) // to calc Outsets of preds
NeedAnotherIteration |= LVBB->applyFlowFunc(BB2BBLVMap);
NeedAnotherIteration |= LVBB->applyFlowFunc();
if (DEBUG_LV) LVBB->printInOutSets();
}
@@ -110,15 +110,11 @@ bool MethodLiveVarInfo::doSingleBackwardPass(const Method *M) {
void MethodLiveVarInfo::releaseMemory() {
// First delete all BBLiveVar objects created in constructBBs(). A new object
// of type BBLiveVar is created for every BasicBlock in the method
//
for (std::map<const BasicBlock *, BBLiveVar *>::iterator
HMI = BB2BBLVMap.begin(),
HME = BB2BBLVMap.end(); HMI != HME; ++HMI)
delete HMI->second; // delete all BBLiveVar in BB2BBLVMap
BB2BBLVMap.clear();
// First remove all BBLiveVar annotations created in constructBBs().
if (M)
for (Method::const_iterator I = M->begin(), E = M->end(); I != E; ++I)
BBLiveVar::RemoveFromBB(*I);
M = 0;
// Then delete all objects of type ValueSet created in calcLiveVarSetsForBB
// and entered into MInst2LVSetBI and MInst2LVSetAI (these are caches