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AA metadata refactoring (introduce AAMDNodes)
In order to enable the preservation of noalias function parameter information after inlining, and the representation of block-level __restrict__ pointer information (etc.), additional kinds of aliasing metadata will be introduced. This metadata needs to be carried around in AliasAnalysis::Location objects (and MMOs at the SDAG level), and so we need to generalize the current scheme (which is hard-coded to just one TBAA MDNode*). This commit introduces only the necessary refactoring to allow for the introduction of other aliasing metadata types, but does not actually introduce any (that will come in a follow-up commit). What it does introduce is a new AAMDNodes structure to hold all of the aliasing metadata nodes associated with a particular memory-accessing instruction, and uses that structure instead of the raw MDNode* in AliasAnalysis::Location, etc. No functionality change intended. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@213859 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -429,11 +429,11 @@ MachinePointerInfo MachinePointerInfo::getStack(int64_t Offset) {
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MachineMemOperand::MachineMemOperand(MachinePointerInfo ptrinfo, unsigned f,
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uint64_t s, unsigned int a,
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const MDNode *TBAAInfo,
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const AAMDNodes &AAInfo,
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const MDNode *Ranges)
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: PtrInfo(ptrinfo), Size(s),
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Flags((f & ((1 << MOMaxBits) - 1)) | ((Log2_32(a) + 1) << MOMaxBits)),
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TBAAInfo(TBAAInfo), Ranges(Ranges) {
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AAInfo(AAInfo), Ranges(Ranges) {
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assert((PtrInfo.V.isNull() || PtrInfo.V.is<const PseudoSourceValue*>() ||
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isa<PointerType>(PtrInfo.V.get<const Value*>()->getType())) &&
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"invalid pointer value");
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@ -514,7 +514,7 @@ raw_ostream &llvm::operator<<(raw_ostream &OS, const MachineMemOperand &MMO) {
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OS << "(align=" << MMO.getAlignment() << ")";
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// Print TBAA info.
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if (const MDNode *TBAAInfo = MMO.getTBAAInfo()) {
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if (const MDNode *TBAAInfo = MMO.getAAInfo().TBAA) {
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OS << "(tbaa=";
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if (TBAAInfo->getNumOperands() > 0)
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TBAAInfo->getOperand(0)->printAsOperand(OS, /*PrintType=*/false);
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@ -1379,7 +1379,7 @@ bool MachineInstr::isInvariantLoad(AliasAnalysis *AA) const {
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// If we have an AliasAnalysis, ask it whether the memory is constant.
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if (AA && AA->pointsToConstantMemory(
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AliasAnalysis::Location(V, (*I)->getSize(),
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(*I)->getTBAAInfo())))
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(*I)->getAAInfo())))
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continue;
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}
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