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Don't require a BB to look-up live variables, unless they may need to

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be recomputed.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@7388 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Vikram S. Adve 2003-07-29 19:42:32 +00:00
parent ceb7d2f4f8
commit 7a81a0fd13
2 changed files with 20 additions and 18 deletions
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19
lib/Analysis/LiveVar/FunctionLiveVarInfo.cpp
View File

@ -180,28 +180,29 @@ void FunctionLiveVarInfo::releaseMemory() {
const ValueSet &
FunctionLiveVarInfo::getLiveVarSetBeforeMInst(const MachineInstr *MInst,
const BasicBlock *BB) {
if (const ValueSet *LVSet = MInst2LVSetBI[MInst]) {
return *LVSet; // if found, just return the set
} else {
calcLiveVarSetsForBB(BB); // else, calc for all instrs in BB
return *MInst2LVSetBI[MInst];
const ValueSet *LVSet = MInst2LVSetBI[MInst];
if (LVSet == NULL && BB != NULL) { // if not found and BB provided
calcLiveVarSetsForBB(BB); // calc LVSet for all instrs in BB
LVSet = MInst2LVSetBI[MInst];
}
return *LVSet;
}
//-----------------------------------------------------------------------------
// Gives live variable information after a machine instruction
//-----------------------------------------------------------------------------
const ValueSet &
FunctionLiveVarInfo::getLiveVarSetAfterMInst(const MachineInstr *MI,
const BasicBlock *BB) {
if (const ValueSet *LVSet = MInst2LVSetAI[MI]) {
return *LVSet; // if found, just return the set
} else {
calcLiveVarSetsForBB(BB); // else, calc for all instrs in BB
const ValueSet *LVSet = MInst2LVSetAI[MI];
if (LVSet == NULL && BB != NULL) { // if not found and BB provided
calcLiveVarSetsForBB(BB); // calc LVSet for all instrs in BB
return *MInst2LVSetAI[MI];
}
return *LVSet;
}
// This function applies a machine instr to a live var set (accepts OutSet) and

19
lib/Target/SparcV9/LiveVar/FunctionLiveVarInfo.cpp
View File

@ -180,28 +180,29 @@ void FunctionLiveVarInfo::releaseMemory() {
const ValueSet &
FunctionLiveVarInfo::getLiveVarSetBeforeMInst(const MachineInstr *MInst,
const BasicBlock *BB) {
if (const ValueSet *LVSet = MInst2LVSetBI[MInst]) {
return *LVSet; // if found, just return the set
} else {
calcLiveVarSetsForBB(BB); // else, calc for all instrs in BB
return *MInst2LVSetBI[MInst];
const ValueSet *LVSet = MInst2LVSetBI[MInst];
if (LVSet == NULL && BB != NULL) { // if not found and BB provided
calcLiveVarSetsForBB(BB); // calc LVSet for all instrs in BB
LVSet = MInst2LVSetBI[MInst];
}
return *LVSet;
}
//-----------------------------------------------------------------------------
// Gives live variable information after a machine instruction
//-----------------------------------------------------------------------------
const ValueSet &
FunctionLiveVarInfo::getLiveVarSetAfterMInst(const MachineInstr *MI,
const BasicBlock *BB) {
if (const ValueSet *LVSet = MInst2LVSetAI[MI]) {
return *LVSet; // if found, just return the set
} else {
calcLiveVarSetsForBB(BB); // else, calc for all instrs in BB
const ValueSet *LVSet = MInst2LVSetAI[MI];
if (LVSet == NULL && BB != NULL) { // if not found and BB provided
calcLiveVarSetsForBB(BB); // calc LVSet for all instrs in BB
return *MInst2LVSetAI[MI];
}
return *LVSet;
}
// This function applies a machine instr to a live var set (accepts OutSet) and