mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-12-29 10:32:47 +00:00
Code cleanups, no functional change
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@1704 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner
parent
bdfd328515
commit
a51c7a8ef5
@ -14,7 +14,6 @@
|
||||
#include "llvm/BasicBlock.h"
|
||||
#include "Support/PostOrderIterator.h"
|
||||
#include <iostream>
|
||||
using std::cerr;
|
||||
|
||||
AnalysisID MethodLiveVarInfo::ID(AnalysisID::create<MethodLiveVarInfo>());
|
||||
|
||||
@ -24,7 +23,7 @@ AnalysisID MethodLiveVarInfo::ID(AnalysisID::create<MethodLiveVarInfo>());
|
||||
//-----------------------------------------------------------------------------
|
||||
|
||||
bool MethodLiveVarInfo::runOnMethod(Method *M) {
|
||||
if (DEBUG_LV) cerr << "Analysing live variables ...\n";
|
||||
if (DEBUG_LV) std::cerr << "Analysing live variables ...\n";
|
||||
|
||||
// create and initialize all the BBLiveVars of the CFG
|
||||
constructBBs(M);
|
||||
@ -32,7 +31,7 @@ bool MethodLiveVarInfo::runOnMethod(Method *M) {
|
||||
while (doSingleBackwardPass(M))
|
||||
; // Iterate until we are done.
|
||||
|
||||
if (DEBUG_LV) cerr << "Live Variable Analysis complete!\n";
|
||||
if (DEBUG_LV) std::cerr << "Live Variable Analysis complete!\n";
|
||||
return false;
|
||||
}
|
||||
|
||||
@ -48,7 +47,7 @@ void MethodLiveVarInfo::constructBBs(const Method *M) {
|
||||
BBI != BBE; ++BBI, ++POId) {
|
||||
const BasicBlock *BB = *BBI; // get the current BB
|
||||
|
||||
if (DEBUG_LV) { cerr << " For BB "; printValue(BB); cerr << ":\n"; }
|
||||
if (DEBUG_LV) { std::cerr << " For BB "; printValue(BB); cerr << ":\n"; }
|
||||
|
||||
// create a new BBLiveVar
|
||||
BBLiveVar *LVBB = new BBLiveVar(BB, POId);
|
||||
@ -56,7 +55,7 @@ void MethodLiveVarInfo::constructBBs(const Method *M) {
|
||||
|
||||
LVBB->calcDefUseSets(); // calculates the def and in set
|
||||
|
||||
if (DEBUG_LV)
|
||||
if (DEBUG_LV)
|
||||
LVBB->printAllSets();
|
||||
}
|
||||
|
||||
@ -67,7 +66,7 @@ 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?
|
||||
if (!BB2BBLVMap[*BBRI]) // Not yet processed?
|
||||
BB2BBLVMap[*BBRI] = new BBLiveVar(*BBRI, POId);
|
||||
}
|
||||
|
||||
@ -75,19 +74,16 @@ void MethodLiveVarInfo::constructBBs(const Method *M) {
|
||||
//-----------------------------------------------------------------------------
|
||||
// do one backward pass over the CFG (for iterative analysis)
|
||||
//-----------------------------------------------------------------------------
|
||||
|
||||
bool MethodLiveVarInfo::doSingleBackwardPass(const Method *M) {
|
||||
bool ResultFlow, NeedAnotherIteration = false;
|
||||
if (DEBUG_LV) std::cerr << "\n After Backward Pass ...\n";
|
||||
|
||||
if (DEBUG_LV)
|
||||
cerr << "\n After Backward Pass ...\n";
|
||||
|
||||
po_iterator<const Method*> BBI = po_begin(M);
|
||||
|
||||
for( ; BBI != po_end(M) ; ++BBI) {
|
||||
bool NeedAnotherIteration = false;
|
||||
for (po_iterator<const Method*> BBI = po_begin(M); BBI != po_end(M) ; ++BBI) {
|
||||
BBLiveVar *LVBB = BB2BBLVMap[*BBI];
|
||||
assert(LVBB);
|
||||
assert(LVBB && "BasicBlock information not set for block!");
|
||||
|
||||
if (DEBUG_LV) cerr << " For BB " << (*BBI)->getName() << ":\n";
|
||||
if (DEBUG_LV) std::cerr << " For BB " << (*BBI)->getName() << ":\n";
|
||||
|
||||
if(LVBB->isOutSetChanged())
|
||||
LVBB->applyTransferFunc(); // apply the Tran Func to calc InSet
|
||||
@ -95,7 +91,7 @@ bool MethodLiveVarInfo::doSingleBackwardPass(const Method *M) {
|
||||
if (LVBB->isInSetChanged()) // to calc Outsets of preds
|
||||
NeedAnotherIteration |= LVBB->applyFlowFunc(BB2BBLVMap);
|
||||
|
||||
if(DEBUG_LV) LVBB->printInOutSets();
|
||||
if (DEBUG_LV) LVBB->printInOutSets();
|
||||
}
|
||||
|
||||
// true if we need to reiterate over the CFG
|
||||
@ -105,13 +101,10 @@ bool MethodLiveVarInfo::doSingleBackwardPass(const Method *M) {
|
||||
|
||||
void MethodLiveVarInfo::releaseMemory() {
|
||||
// First delete all BBLiveVar objects created in constructBBs(). A new object
|
||||
// of type BBLiveVa is created for every BasicBlock in the method
|
||||
|
||||
// hash map iterator for BB2BBLVMap
|
||||
// of type BBLiveVar is created for every BasicBlock in the method
|
||||
//
|
||||
BBToBBLiveVarMapType::iterator HMI = BB2BBLVMap.begin();
|
||||
|
||||
for( ; HMI != BB2BBLVMap.end(); ++HMI)
|
||||
for (BBToBBLiveVarMapType::iterator HMI = BB2BBLVMap.begin(),
|
||||
HME = BB2BBLVMap.end(); HMI != HME; ++HMI)
|
||||
delete HMI->second; // delete all BBLiveVar in BB2BBLVMap
|
||||
|
||||
BB2BBLVMap.clear();
|
||||
@ -121,12 +114,9 @@ void MethodLiveVarInfo::releaseMemory() {
|
||||
// to return LiveVarSet's before/after a machine instruction quickly). It
|
||||
// is sufficient to free up all LiveVarSet using only one cache since
|
||||
// both caches refer to the same sets
|
||||
|
||||
// hash map iterator for MInst2LVSetBI
|
||||
//
|
||||
MInstToLiveVarSetMapType::iterator MI = MInst2LVSetBI.begin();
|
||||
|
||||
for( ; MI != MInst2LVSetBI.end(); ++MI)
|
||||
for (MInstToLiveVarSetMapType::iterator MI = MInst2LVSetBI.begin(),
|
||||
ME = MInst2LVSetBI.end(); MI != ME; ++MI)
|
||||
delete MI->second; // delete all LiveVarSets in MInst2LVSetBI
|
||||
|
||||
MInst2LVSetBI.clear();
|
||||
@ -137,30 +127,27 @@ void MethodLiveVarInfo::releaseMemory() {
|
||||
|
||||
|
||||
//-----------------------------------------------------------------------------
|
||||
/* Following functions will give the LiveVar info for any machine instr in
|
||||
a method. It should be called after a call to analyze().
|
||||
|
||||
Thsese functions calucluates live var info for all the machine instrs in a
|
||||
BB when LVInfo for one inst is requested. Hence, this function is useful
|
||||
when live var info is required for many (or all) instructions in a basic
|
||||
block. Also, the arguments to this method does not require specific
|
||||
iterators.
|
||||
*/
|
||||
// Following functions will give the LiveVar info for any machine instr in
|
||||
// a method. It should be called after a call to analyze().
|
||||
//
|
||||
// Thsese functions calucluates live var info for all the machine instrs in a
|
||||
// BB when LVInfo for one inst is requested. Hence, this function is useful
|
||||
// when live var info is required for many (or all) instructions in a basic
|
||||
// block. Also, the arguments to this method does not require specific
|
||||
// iterators.
|
||||
//-----------------------------------------------------------------------------
|
||||
|
||||
//-----------------------------------------------------------------------------
|
||||
// Gives live variable information before a machine instruction
|
||||
//-----------------------------------------------------------------------------
|
||||
|
||||
const LiveVarSet *
|
||||
MethodLiveVarInfo::getLiveVarSetBeforeMInst(const MachineInstr *MInst,
|
||||
const BasicBlock *CurBB) {
|
||||
const LiveVarSet *LVSet = MInst2LVSetBI[MInst];
|
||||
|
||||
if (LVSet) {
|
||||
return LVSet; // if found, just return the set
|
||||
const BasicBlock *BB) {
|
||||
if (const LiveVarSet *LVSet = MInst2LVSetBI[MInst]) {
|
||||
return LVSet; // if found, just return the set
|
||||
} else {
|
||||
calcLiveVarSetsForBB(CurBB); // else, calc for all instrs in BB
|
||||
assert(MInst2LVSetBI[MInst]);
|
||||
calcLiveVarSetsForBB(BB); // else, calc for all instrs in BB
|
||||
return MInst2LVSetBI[MInst];
|
||||
}
|
||||
}
|
||||
@ -170,16 +157,14 @@ MethodLiveVarInfo::getLiveVarSetBeforeMInst(const MachineInstr *MInst,
|
||||
// Gives live variable information after a machine instruction
|
||||
//-----------------------------------------------------------------------------
|
||||
const LiveVarSet *
|
||||
MethodLiveVarInfo::getLiveVarSetAfterMInst(const MachineInstr *MInst,
|
||||
const BasicBlock *CurBB) {
|
||||
const LiveVarSet *LVSet = MInst2LVSetAI[MInst];
|
||||
MethodLiveVarInfo::getLiveVarSetAfterMInst(const MachineInstr *MI,
|
||||
const BasicBlock *BB) {
|
||||
|
||||
if(LVSet) {
|
||||
if (const LiveVarSet *LVSet = MInst2LVSetAI[MI]) {
|
||||
return LVSet; // if found, just return the set
|
||||
} else {
|
||||
calcLiveVarSetsForBB(CurBB); // else, calc for all instrs in BB
|
||||
assert(MInst2LVSetAI[MInst]);
|
||||
return MInst2LVSetAI[MInst];
|
||||
calcLiveVarSetsForBB(BB); // else, calc for all instrs in BB
|
||||
return MInst2LVSetAI[MI];
|
||||
}
|
||||
}
|
||||
|
||||
@ -188,51 +173,31 @@ MethodLiveVarInfo::getLiveVarSetAfterMInst(const MachineInstr *MInst,
|
||||
//-----------------------------------------------------------------------------
|
||||
// This method calculates the live variable information for all the
|
||||
// instructions in a basic block and enter the newly constructed live
|
||||
// variable sets into a the caches ( MInst2LVSetAI, MInst2LVSetBI)
|
||||
// variable sets into a the caches (MInst2LVSetAI, MInst2LVSetBI)
|
||||
//-----------------------------------------------------------------------------
|
||||
void MethodLiveVarInfo::calcLiveVarSetsForBB(const BasicBlock *const BB)
|
||||
{
|
||||
const MachineCodeForBasicBlock& MIVec = BB->getMachineInstrVec();
|
||||
MachineCodeForBasicBlock::const_reverse_iterator
|
||||
MInstIterator = MIVec.rbegin();
|
||||
|
||||
void MethodLiveVarInfo::calcLiveVarSetsForBB(const BasicBlock *BB) {
|
||||
const MachineCodeForBasicBlock &MIVec = BB->getMachineInstrVec();
|
||||
|
||||
LiveVarSet *CurSet = new LiveVarSet();
|
||||
const LiveVarSet *SetAI = getOutSetOfBB(BB); // init SetAI with OutSet
|
||||
CurSet->setUnion(SetAI); // CurSet now contains OutSet
|
||||
|
||||
// iterate over all the machine instructions in BB
|
||||
for( ; MInstIterator != MIVec.rend(); MInstIterator++) {
|
||||
for (MachineCodeForBasicBlock::const_reverse_iterator MII = MIVec.rbegin(),
|
||||
MIE = MIVec.rend(); MII != MIE; ++MII) {
|
||||
// MI is cur machine inst
|
||||
const MachineInstr *MI = *MII;
|
||||
|
||||
// MInst is cur machine inst
|
||||
const MachineInstr * MInst = *MInstIterator;
|
||||
MInst2LVSetAI[MI] = SetAI; // record in After Inst map
|
||||
|
||||
MInst2LVSetAI[MInst] = SetAI; // record in After Inst map
|
||||
|
||||
CurSet->applyTranferFuncForMInst( MInst ); // apply the transfer Func
|
||||
CurSet->applyTranferFuncForMInst(MI); // apply the transfer Func
|
||||
LiveVarSet *NewSet = new LiveVarSet(); // create a new set and
|
||||
NewSet->setUnion( CurSet ); // copy the set after T/F to it
|
||||
NewSet->setUnion(CurSet); // copy the set after T/F to it
|
||||
|
||||
MInst2LVSetBI[MInst] = NewSet; // record in Before Inst map
|
||||
MInst2LVSetBI[MI] = NewSet; // record in Before Inst map
|
||||
|
||||
// SetAI will be used in the next iteration
|
||||
SetAI = NewSet;
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
@ -14,7 +14,6 @@
|
||||
#include "llvm/BasicBlock.h"
|
||||
#include "Support/PostOrderIterator.h"
|
||||
#include <iostream>
|
||||
using std::cerr;
|
||||
|
||||
AnalysisID MethodLiveVarInfo::ID(AnalysisID::create<MethodLiveVarInfo>());
|
||||
|
||||
@ -24,7 +23,7 @@ AnalysisID MethodLiveVarInfo::ID(AnalysisID::create<MethodLiveVarInfo>());
|
||||
//-----------------------------------------------------------------------------
|
||||
|
||||
bool MethodLiveVarInfo::runOnMethod(Method *M) {
|
||||
if (DEBUG_LV) cerr << "Analysing live variables ...\n";
|
||||
if (DEBUG_LV) std::cerr << "Analysing live variables ...\n";
|
||||
|
||||
// create and initialize all the BBLiveVars of the CFG
|
||||
constructBBs(M);
|
||||
@ -32,7 +31,7 @@ bool MethodLiveVarInfo::runOnMethod(Method *M) {
|
||||
while (doSingleBackwardPass(M))
|
||||
; // Iterate until we are done.
|
||||
|
||||
if (DEBUG_LV) cerr << "Live Variable Analysis complete!\n";
|
||||
if (DEBUG_LV) std::cerr << "Live Variable Analysis complete!\n";
|
||||
return false;
|
||||
}
|
||||
|
||||
@ -48,7 +47,7 @@ void MethodLiveVarInfo::constructBBs(const Method *M) {
|
||||
BBI != BBE; ++BBI, ++POId) {
|
||||
const BasicBlock *BB = *BBI; // get the current BB
|
||||
|
||||
if (DEBUG_LV) { cerr << " For BB "; printValue(BB); cerr << ":\n"; }
|
||||
if (DEBUG_LV) { std::cerr << " For BB "; printValue(BB); cerr << ":\n"; }
|
||||
|
||||
// create a new BBLiveVar
|
||||
BBLiveVar *LVBB = new BBLiveVar(BB, POId);
|
||||
@ -56,7 +55,7 @@ void MethodLiveVarInfo::constructBBs(const Method *M) {
|
||||
|
||||
LVBB->calcDefUseSets(); // calculates the def and in set
|
||||
|
||||
if (DEBUG_LV)
|
||||
if (DEBUG_LV)
|
||||
LVBB->printAllSets();
|
||||
}
|
||||
|
||||
@ -67,7 +66,7 @@ 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?
|
||||
if (!BB2BBLVMap[*BBRI]) // Not yet processed?
|
||||
BB2BBLVMap[*BBRI] = new BBLiveVar(*BBRI, POId);
|
||||
}
|
||||
|
||||
@ -75,19 +74,16 @@ void MethodLiveVarInfo::constructBBs(const Method *M) {
|
||||
//-----------------------------------------------------------------------------
|
||||
// do one backward pass over the CFG (for iterative analysis)
|
||||
//-----------------------------------------------------------------------------
|
||||
|
||||
bool MethodLiveVarInfo::doSingleBackwardPass(const Method *M) {
|
||||
bool ResultFlow, NeedAnotherIteration = false;
|
||||
if (DEBUG_LV) std::cerr << "\n After Backward Pass ...\n";
|
||||
|
||||
if (DEBUG_LV)
|
||||
cerr << "\n After Backward Pass ...\n";
|
||||
|
||||
po_iterator<const Method*> BBI = po_begin(M);
|
||||
|
||||
for( ; BBI != po_end(M) ; ++BBI) {
|
||||
bool NeedAnotherIteration = false;
|
||||
for (po_iterator<const Method*> BBI = po_begin(M); BBI != po_end(M) ; ++BBI) {
|
||||
BBLiveVar *LVBB = BB2BBLVMap[*BBI];
|
||||
assert(LVBB);
|
||||
assert(LVBB && "BasicBlock information not set for block!");
|
||||
|
||||
if (DEBUG_LV) cerr << " For BB " << (*BBI)->getName() << ":\n";
|
||||
if (DEBUG_LV) std::cerr << " For BB " << (*BBI)->getName() << ":\n";
|
||||
|
||||
if(LVBB->isOutSetChanged())
|
||||
LVBB->applyTransferFunc(); // apply the Tran Func to calc InSet
|
||||
@ -95,7 +91,7 @@ bool MethodLiveVarInfo::doSingleBackwardPass(const Method *M) {
|
||||
if (LVBB->isInSetChanged()) // to calc Outsets of preds
|
||||
NeedAnotherIteration |= LVBB->applyFlowFunc(BB2BBLVMap);
|
||||
|
||||
if(DEBUG_LV) LVBB->printInOutSets();
|
||||
if (DEBUG_LV) LVBB->printInOutSets();
|
||||
}
|
||||
|
||||
// true if we need to reiterate over the CFG
|
||||
@ -105,13 +101,10 @@ bool MethodLiveVarInfo::doSingleBackwardPass(const Method *M) {
|
||||
|
||||
void MethodLiveVarInfo::releaseMemory() {
|
||||
// First delete all BBLiveVar objects created in constructBBs(). A new object
|
||||
// of type BBLiveVa is created for every BasicBlock in the method
|
||||
|
||||
// hash map iterator for BB2BBLVMap
|
||||
// of type BBLiveVar is created for every BasicBlock in the method
|
||||
//
|
||||
BBToBBLiveVarMapType::iterator HMI = BB2BBLVMap.begin();
|
||||
|
||||
for( ; HMI != BB2BBLVMap.end(); ++HMI)
|
||||
for (BBToBBLiveVarMapType::iterator HMI = BB2BBLVMap.begin(),
|
||||
HME = BB2BBLVMap.end(); HMI != HME; ++HMI)
|
||||
delete HMI->second; // delete all BBLiveVar in BB2BBLVMap
|
||||
|
||||
BB2BBLVMap.clear();
|
||||
@ -121,12 +114,9 @@ void MethodLiveVarInfo::releaseMemory() {
|
||||
// to return LiveVarSet's before/after a machine instruction quickly). It
|
||||
// is sufficient to free up all LiveVarSet using only one cache since
|
||||
// both caches refer to the same sets
|
||||
|
||||
// hash map iterator for MInst2LVSetBI
|
||||
//
|
||||
MInstToLiveVarSetMapType::iterator MI = MInst2LVSetBI.begin();
|
||||
|
||||
for( ; MI != MInst2LVSetBI.end(); ++MI)
|
||||
for (MInstToLiveVarSetMapType::iterator MI = MInst2LVSetBI.begin(),
|
||||
ME = MInst2LVSetBI.end(); MI != ME; ++MI)
|
||||
delete MI->second; // delete all LiveVarSets in MInst2LVSetBI
|
||||
|
||||
MInst2LVSetBI.clear();
|
||||
@ -137,30 +127,27 @@ void MethodLiveVarInfo::releaseMemory() {
|
||||
|
||||
|
||||
//-----------------------------------------------------------------------------
|
||||
/* Following functions will give the LiveVar info for any machine instr in
|
||||
a method. It should be called after a call to analyze().
|
||||
|
||||
Thsese functions calucluates live var info for all the machine instrs in a
|
||||
BB when LVInfo for one inst is requested. Hence, this function is useful
|
||||
when live var info is required for many (or all) instructions in a basic
|
||||
block. Also, the arguments to this method does not require specific
|
||||
iterators.
|
||||
*/
|
||||
// Following functions will give the LiveVar info for any machine instr in
|
||||
// a method. It should be called after a call to analyze().
|
||||
//
|
||||
// Thsese functions calucluates live var info for all the machine instrs in a
|
||||
// BB when LVInfo for one inst is requested. Hence, this function is useful
|
||||
// when live var info is required for many (or all) instructions in a basic
|
||||
// block. Also, the arguments to this method does not require specific
|
||||
// iterators.
|
||||
//-----------------------------------------------------------------------------
|
||||
|
||||
//-----------------------------------------------------------------------------
|
||||
// Gives live variable information before a machine instruction
|
||||
//-----------------------------------------------------------------------------
|
||||
|
||||
const LiveVarSet *
|
||||
MethodLiveVarInfo::getLiveVarSetBeforeMInst(const MachineInstr *MInst,
|
||||
const BasicBlock *CurBB) {
|
||||
const LiveVarSet *LVSet = MInst2LVSetBI[MInst];
|
||||
|
||||
if (LVSet) {
|
||||
return LVSet; // if found, just return the set
|
||||
const BasicBlock *BB) {
|
||||
if (const LiveVarSet *LVSet = MInst2LVSetBI[MInst]) {
|
||||
return LVSet; // if found, just return the set
|
||||
} else {
|
||||
calcLiveVarSetsForBB(CurBB); // else, calc for all instrs in BB
|
||||
assert(MInst2LVSetBI[MInst]);
|
||||
calcLiveVarSetsForBB(BB); // else, calc for all instrs in BB
|
||||
return MInst2LVSetBI[MInst];
|
||||
}
|
||||
}
|
||||
@ -170,16 +157,14 @@ MethodLiveVarInfo::getLiveVarSetBeforeMInst(const MachineInstr *MInst,
|
||||
// Gives live variable information after a machine instruction
|
||||
//-----------------------------------------------------------------------------
|
||||
const LiveVarSet *
|
||||
MethodLiveVarInfo::getLiveVarSetAfterMInst(const MachineInstr *MInst,
|
||||
const BasicBlock *CurBB) {
|
||||
const LiveVarSet *LVSet = MInst2LVSetAI[MInst];
|
||||
MethodLiveVarInfo::getLiveVarSetAfterMInst(const MachineInstr *MI,
|
||||
const BasicBlock *BB) {
|
||||
|
||||
if(LVSet) {
|
||||
if (const LiveVarSet *LVSet = MInst2LVSetAI[MI]) {
|
||||
return LVSet; // if found, just return the set
|
||||
} else {
|
||||
calcLiveVarSetsForBB(CurBB); // else, calc for all instrs in BB
|
||||
assert(MInst2LVSetAI[MInst]);
|
||||
return MInst2LVSetAI[MInst];
|
||||
calcLiveVarSetsForBB(BB); // else, calc for all instrs in BB
|
||||
return MInst2LVSetAI[MI];
|
||||
}
|
||||
}
|
||||
|
||||
@ -188,51 +173,31 @@ MethodLiveVarInfo::getLiveVarSetAfterMInst(const MachineInstr *MInst,
|
||||
//-----------------------------------------------------------------------------
|
||||
// This method calculates the live variable information for all the
|
||||
// instructions in a basic block and enter the newly constructed live
|
||||
// variable sets into a the caches ( MInst2LVSetAI, MInst2LVSetBI)
|
||||
// variable sets into a the caches (MInst2LVSetAI, MInst2LVSetBI)
|
||||
//-----------------------------------------------------------------------------
|
||||
void MethodLiveVarInfo::calcLiveVarSetsForBB(const BasicBlock *const BB)
|
||||
{
|
||||
const MachineCodeForBasicBlock& MIVec = BB->getMachineInstrVec();
|
||||
MachineCodeForBasicBlock::const_reverse_iterator
|
||||
MInstIterator = MIVec.rbegin();
|
||||
|
||||
void MethodLiveVarInfo::calcLiveVarSetsForBB(const BasicBlock *BB) {
|
||||
const MachineCodeForBasicBlock &MIVec = BB->getMachineInstrVec();
|
||||
|
||||
LiveVarSet *CurSet = new LiveVarSet();
|
||||
const LiveVarSet *SetAI = getOutSetOfBB(BB); // init SetAI with OutSet
|
||||
CurSet->setUnion(SetAI); // CurSet now contains OutSet
|
||||
|
||||
// iterate over all the machine instructions in BB
|
||||
for( ; MInstIterator != MIVec.rend(); MInstIterator++) {
|
||||
for (MachineCodeForBasicBlock::const_reverse_iterator MII = MIVec.rbegin(),
|
||||
MIE = MIVec.rend(); MII != MIE; ++MII) {
|
||||
// MI is cur machine inst
|
||||
const MachineInstr *MI = *MII;
|
||||
|
||||
// MInst is cur machine inst
|
||||
const MachineInstr * MInst = *MInstIterator;
|
||||
MInst2LVSetAI[MI] = SetAI; // record in After Inst map
|
||||
|
||||
MInst2LVSetAI[MInst] = SetAI; // record in After Inst map
|
||||
|
||||
CurSet->applyTranferFuncForMInst( MInst ); // apply the transfer Func
|
||||
CurSet->applyTranferFuncForMInst(MI); // apply the transfer Func
|
||||
LiveVarSet *NewSet = new LiveVarSet(); // create a new set and
|
||||
NewSet->setUnion( CurSet ); // copy the set after T/F to it
|
||||
NewSet->setUnion(CurSet); // copy the set after T/F to it
|
||||
|
||||
MInst2LVSetBI[MInst] = NewSet; // record in Before Inst map
|
||||
MInst2LVSetBI[MI] = NewSet; // record in Before Inst map
|
||||
|
||||
// SetAI will be used in the next iteration
|
||||
SetAI = NewSet;
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
Loading…
Reference in New Issue
Block a user