return AA->pointsToConstantMemory(Loc, OrLocal);
}
-AliasAnalysis::ModRefResult
-AliasAnalysis::getArgModRefInfo(ImmutableCallSite CS, unsigned ArgIdx) {
+ModRefInfo AliasAnalysis::getArgModRefInfo(ImmutableCallSite CS,
+ unsigned ArgIdx) {
assert(AA && "AA didn't call InitializeAliasAnalysis in its run method!");
return AA->getArgModRefInfo(CS, ArgIdx);
}
-AliasAnalysis::ModRefResult
-AliasAnalysis::getModRefInfo(Instruction *I, ImmutableCallSite Call) {
+ModRefInfo AliasAnalysis::getModRefInfo(Instruction *I,
+ ImmutableCallSite Call) {
// We may have two calls
if (auto CS = ImmutableCallSite(I)) {
// Check if the two calls modify the same memory
// is that if the call references what this instruction
// defines, it must be clobbered by this location.
const MemoryLocation DefLoc = MemoryLocation::get(I);
- if (getModRefInfo(Call, DefLoc) != AliasAnalysis::NoModRef)
- return AliasAnalysis::ModRef;
+ if (getModRefInfo(Call, DefLoc) != MRI_NoModRef)
+ return MRI_ModRef;
}
- return AliasAnalysis::NoModRef;
+ return MRI_NoModRef;
}
-AliasAnalysis::ModRefResult
-AliasAnalysis::getModRefInfo(ImmutableCallSite CS, const MemoryLocation &Loc) {
+ModRefInfo AliasAnalysis::getModRefInfo(ImmutableCallSite CS,
+ const MemoryLocation &Loc) {
assert(AA && "AA didn't call InitializeAliasAnalysis in its run method!");
- ModRefBehavior MRB = getModRefBehavior(CS);
- if (MRB == DoesNotAccessMemory)
- return NoModRef;
+ auto MRB = getModRefBehavior(CS);
+ if (MRB == FMRB_DoesNotAccessMemory)
+ return MRI_NoModRef;
- ModRefResult Mask = ModRef;
+ ModRefInfo Mask = MRI_ModRef;
if (onlyReadsMemory(MRB))
- Mask = Ref;
+ Mask = MRI_Ref;
if (onlyAccessesArgPointees(MRB)) {
bool doesAlias = false;
- ModRefResult AllArgsMask = NoModRef;
+ ModRefInfo AllArgsMask = MRI_NoModRef;
if (doesAccessArgPointees(MRB)) {
for (ImmutableCallSite::arg_iterator AI = CS.arg_begin(), AE = CS.arg_end();
AI != AE; ++AI) {
MemoryLocation ArgLoc =
MemoryLocation::getForArgument(CS, ArgIdx, *TLI);
if (!isNoAlias(ArgLoc, Loc)) {
- ModRefResult ArgMask = getArgModRefInfo(CS, ArgIdx);
+ ModRefInfo ArgMask = getArgModRefInfo(CS, ArgIdx);
doesAlias = true;
- AllArgsMask = ModRefResult(AllArgsMask | ArgMask);
+ AllArgsMask = ModRefInfo(AllArgsMask | ArgMask);
}
}
}
if (!doesAlias)
- return NoModRef;
- Mask = ModRefResult(Mask & AllArgsMask);
+ return MRI_NoModRef;
+ Mask = ModRefInfo(Mask & AllArgsMask);
}
// If Loc is a constant memory location, the call definitely could not
// modify the memory location.
- if ((Mask & Mod) && pointsToConstantMemory(Loc))
- Mask = ModRefResult(Mask & ~Mod);
+ if ((Mask & MRI_Mod) && pointsToConstantMemory(Loc))
+ Mask = ModRefInfo(Mask & ~MRI_Mod);
// If this is the end of the chain, don't forward.
if (!AA) return Mask;
// Otherwise, fall back to the next AA in the chain. But we can merge
// in any mask we've managed to compute.
- return ModRefResult(AA->getModRefInfo(CS, Loc) & Mask);
+ return ModRefInfo(AA->getModRefInfo(CS, Loc) & Mask);
}
-AliasAnalysis::ModRefResult
-AliasAnalysis::getModRefInfo(ImmutableCallSite CS1, ImmutableCallSite CS2) {
+ModRefInfo AliasAnalysis::getModRefInfo(ImmutableCallSite CS1,
+ ImmutableCallSite CS2) {
assert(AA && "AA didn't call InitializeAliasAnalysis in its run method!");
// If CS1 or CS2 are readnone, they don't interact.
- ModRefBehavior CS1B = getModRefBehavior(CS1);
- if (CS1B == DoesNotAccessMemory) return NoModRef;
+ auto CS1B = getModRefBehavior(CS1);
+ if (CS1B == FMRB_DoesNotAccessMemory)
+ return MRI_NoModRef;
- ModRefBehavior CS2B = getModRefBehavior(CS2);
- if (CS2B == DoesNotAccessMemory) return NoModRef;
+ auto CS2B = getModRefBehavior(CS2);
+ if (CS2B == FMRB_DoesNotAccessMemory)
+ return MRI_NoModRef;
// If they both only read from memory, there is no dependence.
if (onlyReadsMemory(CS1B) && onlyReadsMemory(CS2B))
- return NoModRef;
+ return MRI_NoModRef;
- AliasAnalysis::ModRefResult Mask = ModRef;
+ ModRefInfo Mask = MRI_ModRef;
// If CS1 only reads memory, the only dependence on CS2 can be
// from CS1 reading memory written by CS2.
if (onlyReadsMemory(CS1B))
- Mask = ModRefResult(Mask & Ref);
+ Mask = ModRefInfo(Mask & MRI_Ref);
// If CS2 only access memory through arguments, accumulate the mod/ref
// information from CS1's references to the memory referenced by
// CS2's arguments.
if (onlyAccessesArgPointees(CS2B)) {
- AliasAnalysis::ModRefResult R = NoModRef;
+ ModRefInfo R = MRI_NoModRef;
if (doesAccessArgPointees(CS2B)) {
for (ImmutableCallSite::arg_iterator
I = CS2.arg_begin(), E = CS2.arg_end(); I != E; ++I) {
// ArgMask indicates what CS2 might do to CS2ArgLoc, and the dependence of
// CS1 on that location is the inverse.
- ModRefResult ArgMask = getArgModRefInfo(CS2, CS2ArgIdx);
- if (ArgMask == Mod)
- ArgMask = ModRef;
- else if (ArgMask == Ref)
- ArgMask = Mod;
+ ModRefInfo ArgMask = getArgModRefInfo(CS2, CS2ArgIdx);
+ if (ArgMask == MRI_Mod)
+ ArgMask = MRI_ModRef;
+ else if (ArgMask == MRI_Ref)
+ ArgMask = MRI_Mod;
- R = ModRefResult((R | (getModRefInfo(CS1, CS2ArgLoc) & ArgMask)) & Mask);
+ R = ModRefInfo((R | (getModRefInfo(CS1, CS2ArgLoc) & ArgMask)) & Mask);
if (R == Mask)
break;
}
// If CS1 only accesses memory through arguments, check if CS2 references
// any of the memory referenced by CS1's arguments. If not, return NoModRef.
if (onlyAccessesArgPointees(CS1B)) {
- AliasAnalysis::ModRefResult R = NoModRef;
+ ModRefInfo R = MRI_NoModRef;
if (doesAccessArgPointees(CS1B)) {
for (ImmutableCallSite::arg_iterator
I = CS1.arg_begin(), E = CS1.arg_end(); I != E; ++I) {
// ArgMask indicates what CS1 might do to CS1ArgLoc; if CS1 might Mod
// CS1ArgLoc, then we care about either a Mod or a Ref by CS2. If CS1
// might Ref, then we care only about a Mod by CS2.
- ModRefResult ArgMask = getArgModRefInfo(CS1, CS1ArgIdx);
- ModRefResult ArgR = getModRefInfo(CS2, CS1ArgLoc);
- if (((ArgMask & Mod) != NoModRef && (ArgR & ModRef) != NoModRef) ||
- ((ArgMask & Ref) != NoModRef && (ArgR & Mod) != NoModRef))
- R = ModRefResult((R | ArgMask) & Mask);
+ ModRefInfo ArgMask = getArgModRefInfo(CS1, CS1ArgIdx);
+ ModRefInfo ArgR = getModRefInfo(CS2, CS1ArgLoc);
+ if (((ArgMask & MRI_Mod) != MRI_NoModRef &&
+ (ArgR & MRI_ModRef) != MRI_NoModRef) ||
+ ((ArgMask & MRI_Ref) != MRI_NoModRef &&
+ (ArgR & MRI_Mod) != MRI_NoModRef))
+ R = ModRefInfo((R | ArgMask) & Mask);
if (R == Mask)
break;
// Otherwise, fall back to the next AA in the chain. But we can merge
// in any mask we've managed to compute.
- return ModRefResult(AA->getModRefInfo(CS1, CS2) & Mask);
+ return ModRefInfo(AA->getModRefInfo(CS1, CS2) & Mask);
}
-AliasAnalysis::ModRefBehavior
-AliasAnalysis::getModRefBehavior(ImmutableCallSite CS) {
+FunctionModRefBehavior AliasAnalysis::getModRefBehavior(ImmutableCallSite CS) {
assert(AA && "AA didn't call InitializeAliasAnalysis in its run method!");
- ModRefBehavior Min = UnknownModRefBehavior;
+ auto Min = FMRB_UnknownModRefBehavior;
// Call back into the alias analysis with the other form of getModRefBehavior
// to see if it can give a better response.
// Otherwise, fall back to the next AA in the chain. But we can merge
// in any result we've managed to compute.
- return ModRefBehavior(AA->getModRefBehavior(CS) & Min);
+ return FunctionModRefBehavior(AA->getModRefBehavior(CS) & Min);
}
-AliasAnalysis::ModRefBehavior
-AliasAnalysis::getModRefBehavior(const Function *F) {
+FunctionModRefBehavior AliasAnalysis::getModRefBehavior(const Function *F) {
assert(AA && "AA didn't call InitializeAliasAnalysis in its run method!");
return AA->getModRefBehavior(F);
}
// AliasAnalysis non-virtual helper method implementation
//===----------------------------------------------------------------------===//
-AliasAnalysis::ModRefResult
-AliasAnalysis::getModRefInfo(const LoadInst *L, const MemoryLocation &Loc) {
+ModRefInfo AliasAnalysis::getModRefInfo(const LoadInst *L,
+ const MemoryLocation &Loc) {
// Be conservative in the face of volatile/atomic.
if (!L->isUnordered())
- return ModRef;
+ return MRI_ModRef;
// If the load address doesn't alias the given address, it doesn't read
// or write the specified memory.
if (Loc.Ptr && !alias(MemoryLocation::get(L), Loc))
- return NoModRef;
+ return MRI_NoModRef;
// Otherwise, a load just reads.
- return Ref;
+ return MRI_Ref;
}
-AliasAnalysis::ModRefResult
-AliasAnalysis::getModRefInfo(const StoreInst *S, const MemoryLocation &Loc) {
+ModRefInfo AliasAnalysis::getModRefInfo(const StoreInst *S,
+ const MemoryLocation &Loc) {
// Be conservative in the face of volatile/atomic.
if (!S->isUnordered())
- return ModRef;
+ return MRI_ModRef;
if (Loc.Ptr) {
// If the store address cannot alias the pointer in question, then the
// specified memory cannot be modified by the store.
if (!alias(MemoryLocation::get(S), Loc))
- return NoModRef;
+ return MRI_NoModRef;
// If the pointer is a pointer to constant memory, then it could not have
// been modified by this store.
if (pointsToConstantMemory(Loc))
- return NoModRef;
-
+ return MRI_NoModRef;
}
// Otherwise, a store just writes.
- return Mod;
+ return MRI_Mod;
}
-AliasAnalysis::ModRefResult
-AliasAnalysis::getModRefInfo(const VAArgInst *V, const MemoryLocation &Loc) {
+ModRefInfo AliasAnalysis::getModRefInfo(const VAArgInst *V,
+ const MemoryLocation &Loc) {
if (Loc.Ptr) {
// If the va_arg address cannot alias the pointer in question, then the
// specified memory cannot be accessed by the va_arg.
if (!alias(MemoryLocation::get(V), Loc))
- return NoModRef;
+ return MRI_NoModRef;
// If the pointer is a pointer to constant memory, then it could not have
// been modified by this va_arg.
if (pointsToConstantMemory(Loc))
- return NoModRef;
+ return MRI_NoModRef;
}
// Otherwise, a va_arg reads and writes.
- return ModRef;
+ return MRI_ModRef;
}
-AliasAnalysis::ModRefResult
-AliasAnalysis::getModRefInfo(const AtomicCmpXchgInst *CX,
- const MemoryLocation &Loc) {
+ModRefInfo AliasAnalysis::getModRefInfo(const AtomicCmpXchgInst *CX,
+ const MemoryLocation &Loc) {
// Acquire/Release cmpxchg has properties that matter for arbitrary addresses.
if (CX->getSuccessOrdering() > Monotonic)
- return ModRef;
+ return MRI_ModRef;
// If the cmpxchg address does not alias the location, it does not access it.
if (Loc.Ptr && !alias(MemoryLocation::get(CX), Loc))
- return NoModRef;
+ return MRI_NoModRef;
- return ModRef;
+ return MRI_ModRef;
}
-AliasAnalysis::ModRefResult
-AliasAnalysis::getModRefInfo(const AtomicRMWInst *RMW,
- const MemoryLocation &Loc) {
+ModRefInfo AliasAnalysis::getModRefInfo(const AtomicRMWInst *RMW,
+ const MemoryLocation &Loc) {
// Acquire/Release atomicrmw has properties that matter for arbitrary addresses.
if (RMW->getOrdering() > Monotonic)
- return ModRef;
+ return MRI_ModRef;
// If the atomicrmw address does not alias the location, it does not access it.
if (Loc.Ptr && !alias(MemoryLocation::get(RMW), Loc))
- return NoModRef;
+ return MRI_NoModRef;
- return ModRef;
+ return MRI_ModRef;
}
// FIXME: this is really just shoring-up a deficiency in alias analysis.
// BasicAA isn't willing to spend linear time determining whether an alloca
// was captured before or after this particular call, while we are. However,
// with a smarter AA in place, this test is just wasting compile time.
-AliasAnalysis::ModRefResult AliasAnalysis::callCapturesBefore(
- const Instruction *I, const MemoryLocation &MemLoc, DominatorTree *DT) {
+ModRefInfo AliasAnalysis::callCapturesBefore(const Instruction *I,
+ const MemoryLocation &MemLoc,
+ DominatorTree *DT) {
if (!DT)
- return AliasAnalysis::ModRef;
+ return MRI_ModRef;
const Value *Object = GetUnderlyingObject(MemLoc.Ptr, *DL);
if (!isIdentifiedObject(Object) || isa<GlobalValue>(Object) ||
isa<Constant>(Object))
- return AliasAnalysis::ModRef;
+ return MRI_ModRef;
ImmutableCallSite CS(I);
if (!CS.getInstruction() || CS.getInstruction() == Object)
- return AliasAnalysis::ModRef;
+ return MRI_ModRef;
if (llvm::PointerMayBeCapturedBefore(Object, /* ReturnCaptures */ true,
/* StoreCaptures */ true, I, DT,
/* include Object */ true))
- return AliasAnalysis::ModRef;
+ return MRI_ModRef;
unsigned ArgNo = 0;
- AliasAnalysis::ModRefResult R = AliasAnalysis::NoModRef;
+ ModRefInfo R = MRI_NoModRef;
for (ImmutableCallSite::arg_iterator CI = CS.arg_begin(), CE = CS.arg_end();
CI != CE; ++CI, ++ArgNo) {
// Only look at the no-capture or byval pointer arguments. If this
if (CS.doesNotAccessMemory(ArgNo))
continue;
if (CS.onlyReadsMemory(ArgNo)) {
- R = AliasAnalysis::Ref;
+ R = MRI_Ref;
continue;
}
- return AliasAnalysis::ModRef;
+ return MRI_ModRef;
}
return R;
}
///
bool AliasAnalysis::canBasicBlockModify(const BasicBlock &BB,
const MemoryLocation &Loc) {
- return canInstructionRangeModRef(BB.front(), BB.back(), Loc, Mod);
+ return canInstructionRangeModRef(BB.front(), BB.back(), Loc, MRI_Mod);
}
/// canInstructionRangeModRef - Return true if it is possible for the
bool AliasAnalysis::canInstructionRangeModRef(const Instruction &I1,
const Instruction &I2,
const MemoryLocation &Loc,
- const ModRefResult Mode) {
+ const ModRefInfo Mode) {
assert(I1.getParent() == I2.getParent() &&
"Instructions not in same basic block!");
BasicBlock::const_iterator I = &I1;
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