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[AliasSetTracker] Return void for add() functions. NFC.

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Differential Revision: https://reviews.llvm.org/D25748

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@284628 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chad Rosier
2016-10-19 18:50:32 +00:00
parent 0ca2107254
commit 6d823ecec2
2 changed files with 33 additions and 52 deletions
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lib/Analysis/AliasSetTracker.cpp
+24 -42
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@@ -289,8 +289,7 @@ AliasSet *AliasSetTracker::findAliasSetForUnknownInst(Instruction *Inst) {
/// getAliasSetForPointer - Return the alias set that the specified pointer
/// lives in.
AliasSet &AliasSetTracker::getAliasSetForPointer(Value *Pointer, uint64_t Size,
const AAMDNodes &AAInfo,
bool *New) {
const AAMDNodes &AAInfo) {
AliasSet::PointerRec &Entry = getEntryFor(Pointer);
if (AliasAnyAS) {
@@ -328,68 +327,55 @@ AliasSet &AliasSetTracker::getAliasSetForPointer(Value *Pointer, uint64_t Size,
return *AS;
}
if (New) *New = true;
// Otherwise create a new alias set to hold the loaded pointer.
AliasSets.push_back(new AliasSet());
AliasSets.back().addPointer(*this, Entry, Size, AAInfo);
return AliasSets.back();
}
bool AliasSetTracker::add(Value *Ptr, uint64_t Size, const AAMDNodes &AAInfo) {
bool NewPtr;
addPointer(Ptr, Size, AAInfo, AliasSet::NoAccess, NewPtr);
return NewPtr;
void AliasSetTracker::add(Value *Ptr, uint64_t Size, const AAMDNodes &AAInfo) {
addPointer(Ptr, Size, AAInfo, AliasSet::NoAccess);
}
bool AliasSetTracker::add(LoadInst *LI) {
void AliasSetTracker::add(LoadInst *LI) {
if (isStrongerThanMonotonic(LI->getOrdering())) return addUnknown(LI);
AAMDNodes AAInfo;
LI->getAAMetadata(AAInfo);
AliasSet::AccessLattice Access = AliasSet::RefAccess;
bool NewPtr;
const DataLayout &DL = LI->getModule()->getDataLayout();
AliasSet &AS = addPointer(LI->getOperand(0),
DL.getTypeStoreSize(LI->getType()),
AAInfo, Access, NewPtr);
DL.getTypeStoreSize(LI->getType()), AAInfo, Access);
if (LI->isVolatile()) AS.setVolatile();
return NewPtr;
}
bool AliasSetTracker::add(StoreInst *SI) {
void AliasSetTracker::add(StoreInst *SI) {
if (isStrongerThanMonotonic(SI->getOrdering())) return addUnknown(SI);
AAMDNodes AAInfo;
SI->getAAMetadata(AAInfo);
AliasSet::AccessLattice Access = AliasSet::ModAccess;
bool NewPtr;
const DataLayout &DL = SI->getModule()->getDataLayout();
Value *Val = SI->getOperand(0);
AliasSet &AS = addPointer(SI->getOperand(1),
DL.getTypeStoreSize(Val->getType()),
AAInfo, Access, NewPtr);
AliasSet &AS = addPointer(
SI->getOperand(1), DL.getTypeStoreSize(Val->getType()), AAInfo, Access);
if (SI->isVolatile()) AS.setVolatile();
return NewPtr;
}
bool AliasSetTracker::add(VAArgInst *VAAI) {
void AliasSetTracker::add(VAArgInst *VAAI) {
AAMDNodes AAInfo;
VAAI->getAAMetadata(AAInfo);
bool NewPtr;
addPointer(VAAI->getOperand(0), MemoryLocation::UnknownSize, AAInfo,
AliasSet::ModRefAccess, NewPtr);
return NewPtr;
AliasSet::ModRefAccess);
}
bool AliasSetTracker::add(MemSetInst *MSI) {
void AliasSetTracker::add(MemSetInst *MSI) {
AAMDNodes AAInfo;
MSI->getAAMetadata(AAInfo);
bool NewPtr;
uint64_t Len;
if (ConstantInt *C = dyn_cast<ConstantInt>(MSI->getLength()))
@@ -398,30 +384,28 @@ bool AliasSetTracker::add(MemSetInst *MSI) {
Len = MemoryLocation::UnknownSize;
AliasSet &AS =
addPointer(MSI->getRawDest(), Len, AAInfo, AliasSet::ModAccess, NewPtr);
addPointer(MSI->getRawDest(), Len, AAInfo, AliasSet::ModAccess);
if (MSI->isVolatile())
AS.setVolatile();
return NewPtr;
}
bool AliasSetTracker::addUnknown(Instruction *Inst) {
if (isa<DbgInfoIntrinsic>(Inst))
return true; // Ignore DbgInfo Intrinsics.
void AliasSetTracker::addUnknown(Instruction *Inst) {
if (isa<DbgInfoIntrinsic>(Inst))
return; // Ignore DbgInfo Intrinsics.
if (!Inst->mayReadOrWriteMemory())
return true; // doesn't alias anything
return; // doesn't alias anything
AliasSet *AS = findAliasSetForUnknownInst(Inst);
if (AS) {
AS->addUnknownInst(Inst, AA);
return false;
return;
}
AliasSets.push_back(new AliasSet());
AS = &AliasSets.back();
AS->addUnknownInst(Inst, AA);
return true;
}
bool AliasSetTracker::add(Instruction *I) {
void AliasSetTracker::add(Instruction *I) {
// Dispatch to one of the other add methods.
if (LoadInst *LI = dyn_cast<LoadInst>(I))
return add(LI);
@@ -432,7 +416,7 @@ bool AliasSetTracker::add(Instruction *I) {
if (MemSetInst *MSI = dyn_cast<MemSetInst>(I))
return add(MSI);
return addUnknown(I);
// FIXME: add support of memcpy and memmove.
// FIXME: add support of memcpy and memmove.
}
void AliasSetTracker::add(BasicBlock &BB) {
@@ -456,11 +440,10 @@ void AliasSetTracker::add(const AliasSetTracker &AST) {
add(AS.UnknownInsts[i]);
// Loop over all of the pointers in this alias set.
bool X;
for (AliasSet::iterator ASI = AS.begin(), E = AS.end(); ASI != E; ++ASI) {
AliasSet &NewAS = addPointer(ASI.getPointer(), ASI.getSize(),
ASI.getAAInfo(),
(AliasSet::AccessLattice)AS.Access, X);
AliasSet &NewAS =
addPointer(ASI.getPointer(), ASI.getSize(), ASI.getAAInfo(),
(AliasSet::AccessLattice)AS.Access);
if (AS.isVolatile()) NewAS.setVolatile();
}
}
@@ -571,10 +554,9 @@ AliasSet &AliasSetTracker::mergeAllAliasSets() {
AliasSet &AliasSetTracker::addPointer(Value *P, uint64_t Size,
const AAMDNodes &AAInfo,
AliasSet::AccessLattice E, bool &NewSet) {
AliasSet::AccessLattice E) {
NewSet = false;
AliasSet &AS = getAliasSetForPointer(P, Size, AAInfo, &NewSet);
AliasSet &AS = getAliasSetForPointer(P, Size, AAInfo);
AS.Access |= E;
if (!AliasAnyAS && (TotalMayAliasSetSize > SaturationThreshold)) {